fix: add measured values table - sqlite

Instead to implement own logic how the database scheme should be updated
or migrated to a newer or older version flucky use now instead the
go-migrate package.

.drone.yml

@@ -6,13 +6,29 @@ steps:
 - name: build-linux-amd64
   image: docker.io/volkerraschek/build-image:latest
   commands:
-  - make bin/linux/amd64/flucky
+  - make
   when:
     event:
     - push
     - pull_request
     - tag
 
+# - name: golangci-lint
+#   image: docker.io/golangci/golangci-lint:v1.40.1-alpine
+#   commands:
+#   - golangci-lint run --concurrency $(nproc --ignore=1)
+#   when:
+#     event:
+#     - push
+#     - pull_request
+
+# - name: gosec
+#   image: docker.io/securego/gosec:v2.8.0
+#   when:
+#     event:
+#     - push
+#     - pull_request
+
 # steps:
 # - name: test-unit
 #   image: docker.io/volkerraschek/build-image:latest

.gitignore

@@ -1,13 +1,7 @@
 # absolute files
 .env
-flucky
-flucky.rpm
-flucky.tar.bz2
-flucky.tar.gz
-flucky.tar.xz
 
-# relative files
+flucky*
-**/bindata*.go
 
 # directories
 .vscode/

.golangci.yml

@@ -0,0 +1,29 @@
+run:
+  skip-dirs:
+  - it
+  timeout: 10m
+  tests: true
+
+linters:
+  disable-all: true
+  enable:
+  # Default
+  - deadcode
+  - errcheck
+  - gosimple
+  - govet
+  - ineffassign
+  - staticcheck
+  - structcheck
+  - typecheck
+  - unused
+  - varcheck
+
+  # Additionally linters
+  - bodyclose
+  - misspell
+  - nilerr
+  - rowserrcheck
+  - sqlclosecheck
+  - unparam
+  - whitespace

Dockerfile

@@ -12,7 +12,9 @@ ARG VERSION
 # ==================================
 FROM ${BUILD_IMAGE} AS build
 COPY . /workspace
-RUN make ${EXECUTABLE_TARGET} VERSION=${VERSION} GOPROXY=${GOPROXY} GOPRIVATE=${GOPRIVATE}
+ENV GOPROXY=${GOPROXY}
+ENV GOPRIVATE=${GOPRIVATE}
+RUN make ${EXECUTABLE_TARGET} VERSION=${VERSION}
 
 # TARGET
 # ==================================

Makefile

@@ -1,181 +1,86 @@
-# VERSION
-# If no version is specified as a parameter of make, the last git hash
-# value is taken.
 VERSION?=$(shell git describe --abbrev=0)+$(shell date +'%Y%m%d%H%I%S')
 
-# GOPROXY settings
+EXECUTABLE:=flucky
-# If no GOPROXY environment variable available, the pre-defined GOPROXY from go
-# env to download and validate go modules is used. Exclude downloading and
-# validation of all private modules which are pre-defined in GOPRIVATE. If no
-# GOPRIVATE variable defined, the variable of go env is used.
-GOPROXY?=$(shell go env GOPROXY)
-GOPRIVATE?=$(shell go env GOPRIVATE)
 
-# CONTAINER_RUNTIME
+DESTDIR?=
-# The CONTAINER_RUNTIME variable will be used to specified the path to a
+PREFIX?=/usr/local
-# container runtime. This is needed to start and run a container images.
-CONTAINER_RUNTIME?=$(shell which docker)
-CONTAINER_IMAGE_VERSION?=latest
-
-# EXECUTABLE
-EXECUTABLE=flucky
 
 # BINARIES
 # ==============================================================================
-EXECUTABLE_TARGETS:= \
+all: ${EXECUTABLE}
-	bin/linux/amd64/${EXECUTABLE} \
-	bin/linux/arm/5/${EXECUTABLE} \
-	bin/linux/arm/7/${EXECUTABLE} \
-	bin/tmp/${EXECUTABLE}
 
-${EXECUTABLE}: bin/tmp/${EXECUTABLE}
+${EXECUTABLE}:
-
-bin/linux/amd64/${EXECUTABLE}: bindata
 	CGO_ENABLED=1 \
-	GOOS=linux \
+	GOPROXY=$(shell go env GOPROXY) \
-	GOARCH=amd64 \
+	GOPRIVATE=$(shell go env GOPRIVATE) \
-	GOPROXY=${GOPROXY} \
-	GOPRIVATE=${GOPRIVATE} \
 		go build -ldflags "-X main.version=${VERSION:v%=%}" -o ${@}
 
-bin/linux/arm/5/${EXECUTABLE}: bindata
+# COMPLETIONS
-	CGO_ENABLED=1 \
-	GOOS=linux \
-	GOARCH=arm \
-	GOARM=5 \
-	GOPROXY=${GOPROXY} \
-	GOPRIVATE=${GOPRIVATE} \
-		go build -ldflags "-X main.version=${VERSION:v%=%}" -o ${@}
-
-bin/linux/arm/7/${EXECUTABLE}: bindata
-	CC=arm-linux-gnueabihf-gcc \
-	CGO_ENABLED=1 \
-	GOOS=linux \
-	GOARCH=arm \
-	GOARM=7 \
-	GOPROXY=${GOPROXY} \
-	GOPRIVATE=${GOPRIVATE} \
-		go build -ldflags "-X main.version=${VERSION:v%=%}" -o ${@}
-
-bin/tmp/${EXECUTABLE}: bindata
-	CGO_ENABLED=1 \
-	GOPROXY=${GOPROXY} \
-	GOPRIVATE=${GOPRIVATE} \
-		go build -ldflags "-X main.version=${VERSION:v%=%}" -o ${@}
-
-# GO-BINDATA
 # ==============================================================================
-BINDATA_TARGETS := \
+${EXECUTABLE}.sh: ${EXECUTABLE}
-	pkg/repository/db/bindataSQL.go \
+	${EXECUTABLE} completion bash > ${@}
 
-PHONY+=bindata
+${EXECUTABLE}.fish: ${EXECUTABLE}
-bindata: clean ${BINDATA_TARGETS}
+	${EXECUTABLE} completion fish > ${@}
 
-pkg/repository/db/bindataSQL.go:
+${EXECUTABLE}.zsh: ${EXECUTABLE}
-	go-bindata -pkg db -o ./pkg/repository/db/bindataSQL.go pkg/repository/db/postgres/*** pkg/repository/db/sqlite3/***
+	${EXECUTABLE} completion zsh > ${@}
+
+# UN/INSTALL
+# ==============================================================================
+PHONY+=install
+install: ${EXECUTABLE} ${EXECUTABLE}.sh ${EXECUTABLE}.fish ${EXECUTABLE}.zsh
+	install --directory ${DESTDIR}${PREFIX}/bin
+	install --mode 755 ${EXECUTABLE} ${DESTDIR}${PREFIX}/bin/${EXECUTABLE}
+
+	install --directory ${DESTDIR}/usr/lib/systemd/system
+	install --mode 644 systemd/${EXECUTABLE}.service ${DESTDIR}/usr/lib/systemd/system/${EXECUTABLE}.service
+
+	install --directory ${DESTDIR}${PREFIX}/share/bash-completion/completions/
+	install --mode 644 ${EXECUTABLE}.sh ${DESTDIR}${PREFIX}/share/bash-completion/completions/${EXECUTABLE}.sh
+
+	install --directory ${DESTDIR}${PREFIX}/fish/vendor_completions.d
+	install --mode 644 ${EXECUTABLE}.fish ${DESTDIR}${PREFIX}/fish/vendor_completions.d/${EXECUTABLE}.fish
+
+	install --directory ${DESTDIR}${PREFIX}/licenses/${EXECUTABLE}
+	install --mode 644 LICENSE ${DESTDIR}${PREFIX}/licenses/${EXECUTABLE}/LICENSE
+
+PHONY+=uninstall
+uninstall:
+	-rm --recursive --force \
+		${DESTDIR}${PREFIX}/bin/${EXECUTABLE} \
+		${DESTDIR}/usr/lib/systemd/system/${EXECUTABLE}.service \
+		${DESTDIR}${PREFIX}/share/bash-completion/completions/${EXECUTABLE}.sh \
+		${DESTDIR}${PREFIX}/fish/vendor_completions.d/${EXECUTABLE}.fish \
+		${DESTDIR}${PREFIX}/licenses/${EXECUTABLE}/LICENSE
 
 # CLEAN
 # ==============================================================================
 PHONY+=clean
 clean:
-	rm --force ${BINDATA_TARGETS} || true
+	rm --force --recursive ${EXECUTABLE}* || true
-	rm --force --recursive bin/ || true
 
 # TEST
 # ==============================================================================
 PHONY+=test/unit
-test/unit: bindata
+test/unit:
 	go test -v -race -coverprofile=coverage.txt -covermode=atomic -timeout 600s -count=1 ./pkg/...
 
-PHONY+=test/integration
+PHONY+=test/coverage
-test/integration:
-	go test -v -count=1 -timeout 600s ./it/...
-
 test/coverage: test/unit
 	go tool cover -html=coverage.txt
 
-# CONTAINER IMAGE STEPS
+# GOLANGCI-LINT
 # ==============================================================================
-PHONY+=container-image/build/amd64
+PHONY+=golangci-lint
-container-image/build/amd64:
+golangci-lint:
-	${CONTAINER_RUNTIME} build \
+	golangci-lint run --concurrency=$(shell nproc)
-		--build-arg BASE_IMAGE=docker.io/library/alpine:3.11.2 \
-		--build-arg BUILD_IMAGE=docker.io/volkerraschek/build-image:latest \
-		--build-arg EXECUTABLE=${EXECUTABLE} \
-		--build-arg EXECUTABLE_TARGET=bin/linux/amd64/${EXECUTABLE} \
-		--build-arg GOPROXY=${GOPROXY} \
-		--build-arg GOPRIVATE=${GOPRIVATE} \
-		--build-arg VERSION=${VERSION} \
-		--file Dockerfile \
-		--no-cache \
-		--tag docker.io/volkerraschek/flucky:${CONTAINER_IMAGE_VERSION} \
-		--tag volkerraschek/flucky:${CONTAINER_IMAGE_VERSION} \
-		.
 
-PHONY+=container-image/push/amd64
+# GOSEC
-container-image/push/amd64: container-image/build/amd64
-	${CONTAINER_RUNTIME} login docker.io \
-		--username ${CONTAINER_IMAGE_REGISTRY_USER} \
-		--password ${CONTAINER_IMAGE_REGISTRY_PASSWORD}
-	${CONTAINER_RUNTIME} push docker.io/volkerraschek/flucky:${CONTAINER_IMAGE_VERSION}
-
-# CONTAINER STEPS - BINARY
 # ==============================================================================
-# current os
+PHONY+=gosec
-PHONY+=container-run/${EXECUTABLE}
+gosec:
-container-run/${EXECUTABLE}:
+	gosec $(shell pwd)/...
-	$(MAKE) container-run COMMAND=${@:container-run/%=%}
-
-# build all binaries for any operating system
-PHONY+=container-run/all
-container-run/all:
-	$(MAKE) container-run COMMAND=${@:container-run/%=%}
-
-PHONY+=${EXECUTABLE_TARGETS:%=container-run/%}
-${EXECUTABLE_TARGETS:%=container-run/%}:
-	$(MAKE) container-run COMMAND=${@:container-run/%=%}
-
-# CONTAINER STEPS - GO-BINDATA
-# ==============================================================================
-PHONY+=container-run/bindata
-container-run/bindata:
-	$(MAKE) container-run COMMAND=${@:container-run/%=%}
-
-# CONTAINER STEPS - CLEAN
-# ==============================================================================
-PHONY+=container-run/clean
-container-run/clean:
-	$(MAKE) container-run COMMAND=${@:container-run/%=%}
-
-# CONTAINER STEPS - TEST
-# ==============================================================================
-PHONY+=container-run/test/unit
-container-run/test/unit:
-	$(MAKE) container-run COMMAND=${@:container-run/%=%}
-
-# GENERAL CONTAINER COMMAND
-# ==============================================================================
-PHONY+=container-run
-container-run:
-	${CONTAINER_RUNTIME} run \
-		--rm \
-		--volume ${PWD}:/workspace \
-		--volume /var/run/docker.sock:/var/run/docker.sock \
-		docker.io/volkerraschek/build-image:latest \
-			make ${COMMAND} \
-				GOPROXY=${GOPROXY} \
-				GOPRIVATE=${GOPRIVATE} \
-				VERSION=${VERSION:v%=%}
-
-# REMOTE
-# ==============================================================================
-PHONY+=${FLUCKY_REMOTE:%=remote/%}
-remote/${FLUCKY_REMOTE}: bin/linux/arm/7/${EXECUTABLE}
-	scp bin/linux/arm/7/${EXECUTABLE} root@${FLUCKY_REMOTE}:/usr/local/bin/${EXECUTABLE}
-	# ssh root@${FLUCKY_REMOTE} 'mkdir --parent /etc/bash_completion.d || true'
-	# ssh root@${FLUCKY_REMOTE} 'flucky completion bash > /etc/bash_completion.d/flucky.sh && chmod +x /etc/bash_completion.d/flucky.sh'
-	# ssh root@${FLUCKY_REMOTE} 'flucky completion zsh > /etc/bash_completion.d/flucky.zsh && chmod +x /etc/bash_completion.d/flucky.zsh'
-	ssh root@${FLUCKY_REMOTE} 'chmod +x /usr/local/bin/${EXECUTABLE}'
 
 # PHONY
 # ==============================================================================

cli/completion/completion.go

@@ -0,0 +1,34 @@
+package completion
+
+import (
+	"os"
+
+	"github.com/spf13/cobra"
+)
+
+// InitCmd initialize all daemon subcommands
+func InitCmd(cmd *cobra.Command) error {
+	completionCmd := &cobra.Command{
+		Use:       "completion",
+		Short:     "Generate completion script",
+		Example:   "flucky completion [bash|zsh|fish]",
+		ValidArgs: []string{"bash", "zsh", "fish"},
+		Args:      cobra.ExactValidArgs(1),
+		RunE:      run,
+	}
+	cmd.AddCommand(completionCmd)
+
+	return nil
+}
+
+func run(cmd *cobra.Command, args []string) error {
+	switch args[0] {
+	case "bash":
+		return cmd.Root().GenBashCompletion(os.Stdout)
+	case "zsh":
+		return cmd.Root().GenZshCompletion(os.Stdout)
+	case "fish":
+		return cmd.Root().GenFishCompletion(os.Stdout, true)
+	}
+	return nil
+}

cli/daemon/daemon.go

@@ -18,9 +18,7 @@ func InitCmd(cmd *cobra.Command) error {
 		RunE:    run,
 	}
 
-	daemonCmd.Flags().Bool("compression", true, "Compress measured values")
+	daemonCmd.Flags().Uint("cached-values", 500, "Number of measured values in the cache before they are stored in the database")
-	daemonCmd.Flags().Uint("cached-values", 500, "Number of cached values before saveing into the backend")
-	daemonCmd.Flags().Float64("round", 0.5, "Round values. The value 0 deactivates the function")
 	cmd.AddCommand(daemonCmd)
 
 	return nil
@@ -32,6 +30,11 @@ func run(cmd *cobra.Command, args []string) error {
 		return fmt.Errorf("No config file defined: %v", err)
 	}
 
+	cachedEntries, err := cmd.Flags().GetUint("cached-values")
+	if err != nil {
+		return fmt.Errorf("No cached-entries defined")
+	}
+
 	// logLevel, err := cmd.Flags().GetString("loglevel")
 	// if err != nil {
 	// 	return fmt.Errorf("No loglevel defined: %v", err)
@@ -44,5 +47,5 @@ func run(cmd *cobra.Command, args []string) error {
 		return err
 	}
 
-	return daemon.Start(cnf, flogger)
+	return daemon.Start(cnf, cachedEntries, flogger)
 }

cli/imp/imp.go

@@ -0,0 +1,86 @@
+package imp
+
+import (
+	"context"
+	"fmt"
+	"net/url"
+
+	"git.cryptic.systems/volker.raschek/flucky/pkg/config"
+	"git.cryptic.systems/volker.raschek/flucky/pkg/repository"
+	"git.cryptic.systems/volker.raschek/go-logger"
+	"github.com/spf13/cobra"
+)
+
+func InitCmd(cmd *cobra.Command) error {
+	importCmd := &cobra.Command{
+		Use:   "import",
+		Args:  cobra.RangeArgs(1, 2),
+		Short: "Import data from passed URL",
+		Example: `import sqlite3:///var/cache/flucky/sqlite3.db
+import sqlite3:///var/cache/flucky/sqlite3.db postgres://user:password@host:port/database?sslmode=disable`,
+		RunE: importSources,
+	}
+	cmd.AddCommand(importCmd)
+
+	return nil
+}
+
+func importSources(cmd *cobra.Command, args []string) error {
+	configFile, err := cmd.Flags().GetString("config")
+	if err != nil {
+		return fmt.Errorf("No config file defined")
+	}
+
+	cnf, err := config.Read(configFile)
+	if err != nil {
+		return err
+	}
+
+	logLevelString, err := cmd.Flags().GetString("loglevel")
+	if err != nil {
+		return err
+	}
+
+	logLevel, err := logger.ParseLogLevel(logLevelString)
+	if err != nil {
+		return err
+	}
+
+	flogger := logger.NewLogger(logLevel)
+
+	var (
+		srcURL  *url.URL
+		destURL *url.URL
+	)
+
+	srcURL, err = url.Parse(args[0])
+	if err != nil {
+		return err
+	}
+
+	switch len(args) {
+	case 1:
+		destURL, err = url.Parse(cnf.DSN)
+		if err != nil {
+			return err
+		}
+
+	case 2:
+		destURL, err = url.Parse(args[1])
+		if err != nil {
+			return err
+		}
+	}
+
+	srcRepository, err := repository.New(srcURL, flogger)
+	if err != nil {
+		return err
+	}
+
+	destRepository, err := repository.New(destURL, flogger)
+	if err != nil {
+		return err
+	}
+
+	return destRepository.Import(context.Background(), srcRepository)
+}

cli/root.go

@@ -8,24 +8,23 @@ import (
 	"path/filepath"
 	"time"
 
+	"git.cryptic.systems/volker.raschek/flucky/cli/completion"
 	"git.cryptic.systems/volker.raschek/flucky/cli/daemon"
+	imp "git.cryptic.systems/volker.raschek/flucky/cli/imp"
 	"git.cryptic.systems/volker.raschek/flucky/cli/sensor"
+	"git.cryptic.systems/volker.raschek/flucky/cli/temperature"
 	"git.cryptic.systems/volker.raschek/flucky/pkg/config"
-	"git.cryptic.systems/volker.raschek/flucky/pkg/types"
-	"github.com/Masterminds/semver"
 
 	uuid "github.com/satori/go.uuid"
 	"github.com/spf13/cobra"
 )
 
 // Execute a
-func Execute(version *semver.Version) error {
+func Execute(version string) error {
-
 	rootCmd := &cobra.Command{
-		Use: "flucky",
+		Use:               "flucky",
-		// Short:             "flucky - operate with differen sensors, his values and remote servers to synchronize measured values",
 		PersistentPreRunE: preRunError,
-		Version:           version.String(),
+		Version:           version,
 	}
 
 	defaultConfigFile, err := getDefaultConfigFile()
@@ -37,8 +36,11 @@ func Execute(version *semver.Version) error {
 	rootCmd.PersistentFlags().String("loglevel", "info", "Set the Loglevel. Possible values: debug, info, warn, error, fatal")
 
 	subCommands := []func(cmd *cobra.Command) error{
+		completion.InitCmd,
 		daemon.InitCmd,
+		imp.InitCmd,
 		sensor.InitCmd,
+		temperature.InitCmd,
 	}
 
 	for _, subCommand := range subCommands {
@@ -56,18 +58,11 @@ func Execute(version *semver.Version) error {
 }
 
 func preRunError(cmd *cobra.Command, args []string) error {
-
 	configFile := cmd.Flag("config").Value.String()
 
 	// check if config file exists
 	if _, err := os.Stat(configFile); os.IsNotExist(err) {
-
+		// Time must be truncated for postgres. Postgres currently does not support
-		hostname, err := os.Hostname()
-		if err != nil {
-			return fmt.Errorf("Failed to determine the hostname: %v", err)
-		}
-
-		// Time must be truncted for postgres. Postgres currently does not support
 		// nanoseconds which is automatically include into the go time object
 		postgresTimeStamp := time.Now()
 		location, err := time.LoadLocation("Europe/Berlin")
@@ -85,12 +80,8 @@ func preRunError(cmd *cobra.Command, args []string) error {
 		// Default configuration
 		dsn := fmt.Sprintf("sqlite3://%v/sqlite.db?cache=shared&mode=memory&foreign_keys=on", defaultCacheDir)
 		cnf := config.Config{
-			Device: &types.Device{
+			DeviceID: uuid.NewV4().String(),
-				ID:           uuid.NewV4().String(),
+			DSN:      dsn,
-				Name:         hostname,
-				CreationDate: postgresTimeStamp,
-			},
-			DSN: dsn,
 		}
 
 		err = config.Write(&cnf, configFile)

cli/sensor/sensor.go

@@ -1,6 +1,7 @@
 package sensor
 
 import (
+	"context"
 	"fmt"
 	"net/url"
 	"os"
@@ -97,7 +98,6 @@ flucky sensor rename f98b00ea-a9b2-4e00-924f-113859d0af2d outdoor`,
 }
 
 func addSensor(cmd *cobra.Command, args []string) error {
-
 	sensor := &types.Sensor{
 		ID:    uuid.NewV4().String(),
 		Name:  args[0],
@@ -164,7 +164,7 @@ func addSensor(cmd *cobra.Command, args []string) error {
 		return err
 	}
 
-	sensor.DeviceID = cnf.Device.ID
+	sensor.DeviceID = cnf.DeviceID
 
 	dsnURL, err := url.Parse(cnf.DSN)
 	if err != nil {
@@ -184,7 +184,7 @@ func addSensor(cmd *cobra.Command, args []string) error {
 	}
 
 	// add sensor entry to list
-	err = repo.AddSensors(sensor)
+	err = repo.AddSensors(context.Background())
 	if err != nil {
 		return err
 	}
@@ -199,7 +199,6 @@ func addSensor(cmd *cobra.Command, args []string) error {
 }
 
 func disableSensor(cmd *cobra.Command, args []string) error {
-
 	configFile, err := cmd.Flags().GetString("config")
 	if err != nil {
 		return fmt.Errorf("No config file defined")
@@ -227,11 +226,24 @@ func disableSensor(cmd *cobra.Command, args []string) error {
 		return err
 	}
 
-	return repo.DisableSensorsByNames(args...)
+	s, err := repo.GetSensorsByNames(context.Background(), args...)
+	if err != nil {
+		return err
+	}
+
+	for i := range s {
+		s[i].Enabled = false
+	}
+
+	err = repo.UpdateSensors(context.Background(), s...)
+	if err != nil {
+		return err
+	}
+
+	return nil
 }
 
 func enableSensor(cmd *cobra.Command, args []string) error {
-
 	configFile, err := cmd.Flags().GetString("config")
 	if err != nil {
 		return fmt.Errorf("No config file defined")
@@ -259,11 +271,24 @@ func enableSensor(cmd *cobra.Command, args []string) error {
 		return err
 	}
 
-	return repo.EnableSensorsByNames(args...)
+	s, err := repo.GetSensorsByNames(context.Background(), args...)
+	if err != nil {
+		return err
+	}
+
+	for i := range s {
+		s[i].Enabled = true
+	}
+
+	err = repo.UpdateSensors(context.Background(), s...)
+	if err != nil {
+		return err
+	}
+
+	return nil
 }
 
 func listSensors(cmd *cobra.Command, args []string) error {
-
 	configFile, err := cmd.Flags().GetString("config")
 	if err != nil {
 		return fmt.Errorf("No config file defined")
@@ -292,7 +317,7 @@ func listSensors(cmd *cobra.Command, args []string) error {
 	}
 
 	// add sensor entry to list
-	sensors, err := repo.GetSensorsByDeviceID(cnf.Device.ID)
+	sensors, err := repo.GetSensorsByDeviceIDs(context.Background(), cnf.DeviceID)
 	if err != nil {
 		return err
 	}
@@ -306,7 +331,6 @@ func listSensors(cmd *cobra.Command, args []string) error {
 }
 
 func removeSensor(cmd *cobra.Command, args []string) error {
-
 	configFile, err := cmd.Flags().GetString("config")
 	if err != nil {
 		return fmt.Errorf("No config file defined")
@@ -334,11 +358,10 @@ func removeSensor(cmd *cobra.Command, args []string) error {
 		return err
 	}
 
-	return repo.RemoveSensorsByNames(args...)
+	return repo.RemoveSensorsByNames(context.Background(), args...)
 }
 
 func renameSensor(cmd *cobra.Command, args []string) error {
-
 	configFile, err := cmd.Flags().GetString("config")
 	if err != nil {
 		return fmt.Errorf("No config file defined")
@@ -366,5 +389,19 @@ func renameSensor(cmd *cobra.Command, args []string) error {
 		return err
 	}
 
-	return repo.RenameSensors(args[0], args[1])
+	s, err := repo.GetSensorsByNames(context.Background(), args[0])
+	if err != nil {
+		return err
+	}
+
+	for i := range s {
+		s[i].Name = args[1]
+	}
+
+	err = repo.UpdateSensors(context.Background(), s...)
+	if err != nil {
+		return err
+	}
+
+	return nil
 }

cli/temperature/temperature.go

@@ -0,0 +1,131 @@
+package temperature
+
+import (
+	"context"
+	"fmt"
+	"net/url"
+	"os"
+
+	"git.cryptic.systems/volker.raschek/flucky/pkg/cli"
+	"git.cryptic.systems/volker.raschek/flucky/pkg/config"
+	"git.cryptic.systems/volker.raschek/flucky/pkg/repository"
+	"git.cryptic.systems/volker.raschek/flucky/pkg/sensor"
+	"git.cryptic.systems/volker.raschek/flucky/pkg/types"
+	"git.cryptic.systems/volker.raschek/go-logger"
+	"github.com/spf13/cobra"
+)
+
+func InitCmd(cmd *cobra.Command) error {
+	temperatureCmd := &cobra.Command{
+		Use:   "temperature",
+		Short: "Read and list temperature values",
+	}
+
+	readTemperatureCmd := &cobra.Command{
+		Use:   "read",
+		Short: "Read temperature values from sensors",
+		RunE:  readTemperature,
+	}
+	readTemperatureCmd.Flags().Bool("persist", true, "Persist measured values to the repository")
+
+	temperatureCmd.AddCommand(readTemperatureCmd)
+	cmd.AddCommand(temperatureCmd)
+
+	return nil
+}
+
+func readTemperature(cmd *cobra.Command, args []string) error {
+	configFile, err := cmd.Flags().GetString("config")
+	if err != nil {
+		return fmt.Errorf("No config file defined")
+	}
+
+	persist, err := cmd.Flags().GetBool("persist")
+	if err != nil {
+		return fmt.Errorf("Flag persist not defined: %v", err)
+	}
+
+	cnf, err := config.Read(configFile)
+	if err != nil {
+		return err
+	}
+
+	dsnURL, err := url.Parse(cnf.DSN)
+	if err != nil {
+		return err
+	}
+
+	logLevelString, err := cmd.Flags().GetString("loglevel")
+	if err != nil {
+		return err
+	}
+
+	logLevel, err := logger.ParseLogLevel(logLevelString)
+	if err != nil {
+		return err
+	}
+
+	flogger := logger.NewLogger(logLevel)
+
+	repo, err := repository.New(dsnURL, flogger)
+	if err != nil {
+		return err
+	}
+
+	ctx := context.Background()
+
+	sensorTypes, err := repo.GetSensors(ctx)
+	if err != nil {
+		return err
+	}
+
+	sensorTypes, err = types.FilterSensorByMeasuredValueTypes(sensorTypes, types.Temperature)
+	if err != nil {
+		return err
+	}
+
+	sensors := make([]sensor.Sensor, 0)
+	for i := range sensorTypes {
+		s, err := sensor.New(sensorTypes[i])
+		if err != nil {
+			return err
+		}
+		sensors = append(sensors, s)
+	}
+
+	measuredValueChannel, errorChannel := sensor.ReadPipeline(context.TODO(), sensors...)
+
+	go func() {
+		for {
+			err, open := <-errorChannel
+			if !open {
+				return
+			}
+			flogger.Error("%v", err)
+		}
+	}()
+
+	measuredValues := make([]*types.MeasuredValue, 0)
+LOOP:
+	for {
+		measuredValue, open := <-measuredValueChannel
+		if !open {
+			break LOOP
+		}
+		measuredValues = append(measuredValues, measuredValue)
+	}
+
+	err = cli.PrintMeasuredValues(measuredValues, os.Stdout)
+	if err != nil {
+		return err
+	}
+
+	if persist {
+		err = repo.AddMeasuredValues(ctx, measuredValues...)
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}

docker-compose.yml

@@ -6,7 +6,7 @@ services:
     - PGTZ=Europe/Berlin
     - POSTGRES_PASSWORD=postgres
     - TZ=Europe/Berlin
-    image: postgres:11.5-alpine
+    image: postgres:13-alpine
     ports:
     - 5432:5432
     restart: always

go.mod

@@ -1,24 +1,19 @@
 module git.cryptic.systems/volker.raschek/flucky
 
-go 1.14
+go 1.16
 
 require (
+	git.cryptic.systems/volker.raschek/dockerutils v0.2.0
 	git.cryptic.systems/volker.raschek/go-dht v0.1.2
 	git.cryptic.systems/volker.raschek/go-logger v0.1.0
-	github.com/Masterminds/semver v1.5.0
-	github.com/Microsoft/go-winio v0.4.14 // indirect
 	github.com/d2r2/go-bsbmp v0.0.0-20190515110334-3b4b3aea8375
 	github.com/d2r2/go-i2c v0.0.0-20191123181816-73a8a799d6bc
 	github.com/d2r2/go-logger v0.0.0-20181221090742-9998a510495e
-	github.com/docker/distribution v2.7.1+incompatible // indirect
+	github.com/golang-migrate/migrate/v4 v4.14.2-0.20201125065321-a53e6fc42574
-	github.com/docker/docker v1.13.1
+	github.com/johejo/golang-migrate-extra v0.0.0-20210217013041-51a992e50d16
-	github.com/docker/go-connections v0.4.0
+	github.com/lib/pq v1.10.2
-	github.com/docker/go-units v0.4.0 // indirect
-	github.com/lib/pq v1.7.0
 	github.com/mattn/go-sqlite3 v2.0.3+incompatible
-	github.com/opencontainers/go-digest v1.0.0 // indirect
 	github.com/satori/go.uuid v1.2.0
-	github.com/spf13/cobra v1.0.0
+	github.com/spf13/cobra v1.1.3
-	github.com/stretchr/testify v1.6.1
+	github.com/stretchr/testify v1.7.0
-	golang.org/x/net v0.0.0-20200602114024-627f9648deb9 // indirect
 )

go.sum

@@ -1,185 +1,784 @@
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main.go

@@ -2,11 +2,11 @@ package main
 
 import (
 	"log"
-	"os"
 
 	"git.cryptic.systems/volker.raschek/flucky/cli"
-	"github.com/Masterminds/semver"
 
+	_ "github.com/golang-migrate/migrate/v4/database/postgres"
+	_ "github.com/golang-migrate/migrate/v4/database/sqlite3"
 	_ "github.com/lib/pq"
 	_ "github.com/mattn/go-sqlite3"
 )
@@ -16,11 +16,8 @@ var (
 )
 
 func main() {
-	sversion, err := semver.NewVersion(version)
+	err := cli.Execute(version)
 	if err != nil {
-		log.Printf("The sematic versioning is invalid: %v", version)
+		log.Println(err)
-		os.Exit(1)
 	}
-
-	cli.Execute(sversion)
 }

pkg/cli/cli.go

@@ -8,9 +8,26 @@ import (
 	"git.cryptic.systems/volker.raschek/flucky/pkg/types"
 )
 
+func PrintMeasuredValues(measuredValues []*types.MeasuredValue, w io.Writer) error {
+	// declar tabwriter
+	tw := tabwriter.NewWriter(w, 0, 0, 3, ' ', 0)
+
+	fmt.Fprint(tw, "timestamp\ttype\tvalue\n")
+
+	for i := range measuredValues {
+		fmt.Fprintf(tw, "%v\t%v\t%v\n", measuredValues[i].Date.String(), measuredValues[i].ValueType, measuredValues[i].Value)
+	}
+
+	err := tw.Flush()
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
 // PrintSensors displays a list with all configured sensors
 func PrintSensors(sensors []*types.Sensor, w io.Writer) error {
-
 	// declar tabwriter
 	tw := tabwriter.NewWriter(w, 0, 0, 3, ' ', 0)
 
@@ -42,7 +59,10 @@ func PrintSensors(sensors []*types.Sensor, w io.Writer) error {
 		fmt.Fprintf(tw, "%v\t%v\n", sensor.TickDuration, sensor.Enabled)
 	}
 
-	tw.Flush()
+	err := tw.Flush()
+	if err != nil {
+		return err
+	}
 
 	return nil
 }

pkg/config/config.go

@@ -1,191 +1,7 @@
 package config
 
-import (
-	"fmt"
-	"os"
-	"path/filepath"
-	"regexp"
-
-	"time"
-
-	"git.cryptic.systems/volker.raschek/flucky/pkg/internal/format"
-
-	"git.cryptic.systems/volker.raschek/flucky/pkg/types"
-	uuid "github.com/satori/go.uuid"
-)
-
-var (
-	validUUID = regexp.MustCompile("^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$")
-)
-
 // Config represent the configuration
 type Config struct {
-	Device      *types.Device   `json:"device"`
+	DeviceID string `json:"device_id"`
-	Sensors     []*types.Sensor `json:"sensors"`
+	DSN      string `json:"dsn"`
-	DSN         string          `json:"dsn"`
-	DSNFallback string          `json:"dsn_fallback"`
-}
-
-// AddSensor add a new sensor
-func (cnf *Config) AddSensor(sensor *types.Sensor) error {
-
-	// Verify that a device is configured
-	if cnf.Device == nil {
-		return fmt.Errorf("No device configured")
-	}
-
-	// Define a new UUID if the current UUID is invalid
-	if !validUUID.MatchString(sensor.ID) {
-		sensor.ID = uuid.NewV4().String()
-	}
-
-	// Verify that the sensor has a valid name
-	if len(sensor.Name) <= 0 {
-		return fmt.Errorf("No sensor name defined")
-	}
-
-	// check if sensor name and sensor uuid already exists
-	for _, cnfSensor := range cnf.Sensors {
-		if cnfSensor.Name == sensor.Name ||
-			cnfSensor.ID == sensor.ID {
-			return fmt.Errorf("Sensor with same name or id already exist")
-		}
-
-		if cnfSensor.WireID != nil &&
-			sensor.WireID != nil &&
-			*cnfSensor.WireID == *sensor.WireID {
-			return fmt.Errorf("Sensor with same wire id already exist")
-		}
-	}
-
-	// check if sensor has a valid tick time
-	if _, err := time.ParseDuration(sensor.TickDuration); err != nil {
-		return fmt.Errorf("Failed to parse tick duration: %v", err)
-	}
-
-	// check if sensor has a valid device id
-	if sensor.DeviceID != cnf.Device.ID {
-		sensor.DeviceID = cnf.Device.ID
-	}
-
-	// overwrite creation date
-	sensor.CreationDate = format.FormatedTime()
-
-	// check if wire socket is available
-	if sensor.WireID != nil {
-		socketPath := filepath.Join("/sys/bus/w1/devices", *sensor.WireID, "/w1_slave")
-		if _, err := os.Stat(socketPath); os.IsNotExist(err) {
-			return fmt.Errorf("Wire socket not found: %v", socketPath)
-		}
-	}
-
-	cnf.Sensors = append(cnf.Sensors, sensor)
-
-	return nil
-}
-
-// DisableSensor disables a sensor by its name or its unique UUID
-func (cnf *Config) DisableSensor(name string) error {
-	found := false
-
-	for _, sensor := range cnf.Sensors {
-
-		// disable sensor matched after name
-		if !validUUID.MatchString(name) &&
-			sensor.Name == name {
-			sensor.Enabled = false
-			found = true
-			break
-		}
-
-		// remove machted uuid
-		if validUUID.MatchString(name) &&
-			sensor.ID == name {
-			sensor.Enabled = false
-			found = true
-			break
-		}
-	}
-
-	if !found {
-		return fmt.Errorf("Can not found sensor %v", name)
-	}
-
-	return nil
-}
-
-// EnableSensor enables a sensor by its name or its unique UUID
-func (cnf *Config) EnableSensor(name string) error {
-	found := false
-
-	for _, sensor := range cnf.Sensors {
-
-		// disable sensor matched after name
-		if !validUUID.MatchString(name) &&
-			sensor.Name == name {
-			sensor.Enabled = true
-			found = true
-			break
-		}
-
-		// remove machted uuid
-		if validUUID.MatchString(name) &&
-			sensor.ID == name {
-			sensor.Enabled = true
-			found = true
-			break
-		}
-	}
-
-	if !found {
-		return fmt.Errorf("Can not found sensor %v", name)
-	}
-
-	return nil
-}
-
-// GetSensorByID returns a sensor matched by his id. If no sensor has this id,
-// the function returns nil
-func (cnf *Config) GetSensorByID(id string) *types.Sensor {
-	for _, sensor := range cnf.Sensors {
-		if sensor.ID == id {
-			return sensor
-		}
-	}
-	return nil
-}
-
-// RemoveSensor deletes a sensor by its name or its unique UUID, If definitive
-// is set to true, the sensor will not only be removed in the configuration file
-// but also in the backend.
-func (cnf *Config) RemoveSensor(name string) error {
-
-	for i, sensor := range cnf.Sensors {
-		// remove machted name
-		if !validUUID.MatchString(name) &&
-			sensor.Name == name {
-			cnf.Sensors = append(cnf.Sensors[:i], cnf.Sensors[i+1:]...)
-
-			return nil
-		}
-		// remove machted uuid
-		if validUUID.MatchString(name) &&
-			sensor.ID == name {
-			cnf.Sensors = append(cnf.Sensors[:i], cnf.Sensors[i+1:]...)
-
-			return nil
-		}
-	}
-	return fmt.Errorf("Can not find sensor %v", name)
-}
-
-// RenameSensor renamed a sensor
-func (cnf *Config) RenameSensor(oldName string, newName string) error {
-	for _, cnfSensor := range cnf.Sensors {
-		if cnfSensor.Name == oldName {
-			cnfSensor.Name = newName
-			return nil
-		}
-	}
-	return fmt.Errorf("No sensor %v found", oldName)
 }

pkg/config/config_test.go

@@ -1,31 +0,0 @@
-package config_test
-
-// func TestAddRemoveSensor(t *testing.T) {
-// 	require := require.New(t)
-
-// 	// Test: No device configured
-// 	cnf := new(config.Config)
-// 	err := cnf.AddSensor(&types.Sensor{ID: "1aa32c9a-b505-456d-868b-0403344f4cdf"})
-// 	require.Error(err)
-
-// 	// wireID := "sdfsdff"
-// 	// i2cBus := 1
-// 	// i2cAddress := 78
-
-// 	cnf.Device = &types.Device{ID: "d6176a06-2b0b-41af-a85c-913e8f61c35d"}
-// 	testCases := map[*types.Sensor]error{
-// 		{ID: "1aa32c9a-b505-456d-868b-0403344f4cdf", DeviceID: "d6176a06-2b0b-41af-a85c-913e8f61c35d"}:                                     fmt.Errorf("No sensor name defined"),
-// 		{ID: "1aa32c9a-b505-456d-868b-0403344f4cdf", DeviceID: "d6176a06-2b0b-41af-a85c-913e8f61c35d", Name: "Test01"}:                     fmt.Errorf("Failed to parse tick duration: time: invalid duration "),
-// 		{ID: "1aa32c9a-b505-456d-868b-0403344f4cdf", DeviceID: "d6176a06-2b0b-41af-a85c-913e8f61c35d", Name: "Test01", TickDuration: "5s"}: nil,
-// 		{ID: "1aa32c9a-b505-456d-868b-0403344f4cdf", DeviceID: "d6176a06-2b0b-41af-a85c-913e8f61c35d", Name: "Test01", TickDuration: "5s"}: fmt.Errorf("Sensor with same name or id already exist"),
-// 		// {ID: "f90cfc18-f141-4cfd-a8d2-fb40082de5cc", DeviceID: "d6176a06-2b0b-41af-a85c-913e8f61c35d", Name: "Test01", TickDuration: "5s"}: fmt.Errorf("Sensor with same name or id already exist"),
-// 		// {ID: "860a9922-62cb-4c9b-b5af-5fa783cebe9d", DeviceID: "d6176a06-2b0b-41af-a85c-913e8f61c35d", Name: "Test02", TickDuration: "5s", WireID: &wireID}: fmt.Errorf("Wire socket not found: /sys/bus/w1/devices/sdfsdff/w1_slave"),
-// 		// {ID: "9be8989c-b2a1-4401-a82f-d6989ec226fe", DeviceID: "d6176a06-2b0b-41af-a85c-913e8f61c35d", Name: "Test02", TickDuration: "5s"}:                  nil,
-// 	}
-
-// 	for sensor, expectedErr := range testCases {
-// 		err := cnf.AddSensor(sensor)
-// 		require.Equal(expectedErr, err)
-// 	}
-
-// }

pkg/config/io.go

@@ -31,20 +31,21 @@ func Encode(cnf *Config, w io.Writer) error {
 
 // Read the configuration file
 func Read(configFile string) (*Config, error) {
+	/* #nosec */
 	f, err := os.Open(configFile)
 	if err != nil {
 		return nil, fmt.Errorf("Can not open file %v: %v", configFile, err)
 	}
-	defer f.Close()
+	defer func() { _ = f.Close() }()
 
 	return Decode(f)
-
 }
 
 // Write the configuration into a file, specified by the configuration filepath
 func Write(cnf *Config, configFile string) error {
 	if _, err := os.Stat(configFile); os.IsNotExist(err) {
 		configDir := filepath.Dir(configFile)
+		/* #nosec */
 		err := os.MkdirAll(configDir, 0775)
 		if err != nil {
 			return fmt.Errorf("Failed to create config directory %v: %v", configDir, err)
@@ -55,7 +56,7 @@ func Write(cnf *Config, configFile string) error {
 	if err != nil {
 		return fmt.Errorf("Failed not create config file %v: %v", configFile, err)
 	}
-	defer f.Close()
+	defer func() { _ = f.Close() }()
 
 	return Encode(cnf, f)
 }

pkg/daemon/daemon.go

@@ -6,6 +6,7 @@ import (
 	"net/url"
 	"os"
 	"os/signal"
+	"syscall"
 
 	"git.cryptic.systems/volker.raschek/flucky/pkg/config"
 	"git.cryptic.systems/volker.raschek/flucky/pkg/repository"
@@ -14,10 +15,7 @@ import (
 	"git.cryptic.systems/volker.raschek/go-logger"
 )
 
-func Start(cnf *config.Config, flogger logger.Logger) error {
+func Start(cnf *config.Config, cachedEntries uint, flogger logger.Logger) error {
-
-	measuredValueChannel := make(chan *types.MeasuredValue, 0)
-
 	// load data source name (dsn)
 	dsnURL, err := url.Parse(cnf.DSN)
 	if err != nil {
@@ -29,24 +27,35 @@ func Start(cnf *config.Config, flogger logger.Logger) error {
 		return err
 	}
 
+	ctx := context.Background()
+
 	// Add
-	repoDevice, err := repo.GetDevice(cnf.Device.ID)
+	repoDevice, err := repo.GetDeviceByID(ctx, cnf.DeviceID)
 	switch {
 	case err != nil:
 		return err
 	case repoDevice == nil:
-		err = repo.AddDevices(cnf.Device)
+
+		hostname, err := os.Hostname()
 		if err != nil {
 			return err
 		}
 
-		repoDevice, err = repo.GetDevice(cnf.Device.ID)
+		err = repo.AddDevices(ctx, &types.Device{
+			ID:   cnf.DeviceID,
+			Name: hostname,
+		})
+		if err != nil {
+			return err
+		}
+
+		repoDevice, err = repo.GetDeviceByID(ctx, cnf.DeviceID)
 		if err != nil {
 			return err
 		}
 	}
 
-	repoSensors, err := repo.GetSensorsByDeviceID(repoDevice.ID)
+	repoSensors, err := repo.GetSensorsByDeviceIDs(ctx, repoDevice.ID)
 	switch {
 	case err != nil:
 		return err
@@ -60,7 +69,7 @@ func Start(cnf *config.Config, flogger logger.Logger) error {
 			continue
 		}
 
-		flogger.Debug("Found sensor %v", repoSensor.GetName())
+		flogger.Debug("Found sensor %v", repoSensor.Name)
 
 		sensor, err := sensor.New(repoSensor)
 		if err != nil {
@@ -70,33 +79,31 @@ func Start(cnf *config.Config, flogger logger.Logger) error {
 	}
 
 	interruptChannel := make(chan os.Signal, 1)
-	signal.Notify(interruptChannel, os.Interrupt, os.Kill)
+	signal.Notify(interruptChannel, syscall.SIGTERM)
 
 	// Collection
 	parentCtx := context.Background()
 	ctx, cancel := context.WithCancel(parentCtx)
 
-	for _, s := range sensors {
+	measuredValueChannel, errorChannel := sensor.ReadTickingPipeline(ctx, sensors...)
-		go func(sensor sensor.Sensor) {
+
-			for {
+	go func() {
-				select {
+		for {
-				case <-ctx.Done():
+			select {
+			case <-ctx.Done():
+				return
+			case err, open := <-errorChannel:
+				if !open {
 					return
-				case <-sensor.GetTicker().C:
+				}
-					measuredValues, err := sensor.Read()
+				if err != nil {
-					if err != nil {
+					flogger.Error("%v", err)
-						flogger.Error("%v", err)
-						continue
-					}
-					for _, measuredValue := range measuredValues {
-						measuredValueChannel <- measuredValue
-					}
 				}
 			}
-		}(s)
+		}
-	}
+	}()
 
-	measuredValues := make([]*types.MeasuredValue, 0, 10)
+	measuredValues := make([]*types.MeasuredValue, 0, cachedEntries)
 	for {
 		select {
 		case measuredValue := <-measuredValueChannel:
@@ -105,22 +112,21 @@ func Start(cnf *config.Config, flogger logger.Logger) error {
 
 			if cap(measuredValues) == len(measuredValues) {
 				flogger.Debug("Flush cache with %v values", len(measuredValues))
-				err := repo.AddMeasuredValues(measuredValues...)
+				err := repo.AddMeasuredValues(ctx, measuredValues...)
 				if err != nil {
 					flogger.Error("%v", err)
 				}
-				measuredValues = make([]*types.MeasuredValue, 0, 10)
+				measuredValues = make([]*types.MeasuredValue, 0, cachedEntries)
 			}
 
 		case signal := <-interruptChannel:
 			cancel()
-			close(measuredValueChannel)
 
 			flogger.Info("Stopping daemon: Received process signal %v", signal.String())
 
 			flogger.Debug("Flush cache with %v remaining values", len(measuredValues))
 
-			err := repo.AddMeasuredValues(measuredValues...)
+			err := repo.AddMeasuredValues(ctx, measuredValues...)
 			if err != nil {
 				flogger.Error("%v", err)
 			}

pkg/internal/format/format.go

@@ -1,14 +1,11 @@
 package format
 
 import (
-	"errors"
 	"math"
 	"time"
 )
 
 var (
-	errorPraseTime = errors.New("Can not parse time")
-
 	TimeFormat = "2006-01-02T15:04:05.999999Z07:00"
 )
 
@@ -19,5 +16,4 @@ func FormatedTime() time.Time {
 	t := time.Now()
 	l, _ := time.LoadLocation("Europe/Berlin")
 	return time.Date(t.Year(), t.Month(), t.Day(), t.Hour(), t.Minute(), t.Second(), int(math.Round(float64(t.Nanosecond())/1000000)*1000000), l)
-
 }

pkg/repository/db/db.go

@@ -1,124 +0,0 @@
-package db
-
-import (
-	"context"
-	"database/sql"
-	"fmt"
-	"net/url"
-	"os"
-	"path/filepath"
-	"strings"
-
-	"git.cryptic.systems/volker.raschek/flucky/pkg/types"
-	"git.cryptic.systems/volker.raschek/go-logger"
-)
-
-// Database is a general interface for a database backend like postgres, oracle
-// or sqlite
-type Database interface {
-	Close() error
-	DeleteDevices(ctx context.Context, deviceIDs ...string) error
-	DeleteSensors(ctx context.Context, sensorIDs ...string) error
-	InsertDevices(ctx context.Context, devices ...*types.Device) error
-	InsertMeasuredValues(ctx context.Context, measuredValues ...*types.MeasuredValue) error
-	InsertSensors(ctx context.Context, sensors ...*types.Sensor) error
-	Scheme(ctx context.Context) error
-	SelectDevice(ctx context.Context, deviceID string) (*types.Device, error)
-	SelectDevices(ctx context.Context) ([]*types.Device, error)
-	SelectHumidity(ctx context.Context, id string) (*types.MeasuredValue, error)
-	SelectHumidities(ctx context.Context) ([]*types.MeasuredValue, error)
-	SelectPressure(ctx context.Context, id string) (*types.MeasuredValue, error)
-	SelectPressures(ctx context.Context) ([]*types.MeasuredValue, error)
-	SelectSensor(ctx context.Context, sensorID string) (*types.Sensor, error)
-	SelectSensors(ctx context.Context) ([]*types.Sensor, error)
-	SelectTemperature(ctx context.Context, id string) (*types.MeasuredValue, error)
-	SelectTemperatures(ctx context.Context) ([]*types.MeasuredValue, error)
-	UpdateDevices(ctx context.Context, devices ...*types.Device) error
-	UpdateSensors(ctx context.Context, sensors ...*types.Sensor) error
-}
-
-// New returns a new database backend interface
-func New(dsnURL *url.URL, flogger logger.Logger) (Database, error) {
-
-	// Check of nil pointer
-	for _, parameter := range []interface{}{
-		dsnURL,
-		flogger,
-	} {
-		if parameter == nil {
-			return nil, fmt.Errorf("Parameter does not be nil")
-		}
-	}
-
-	// Load Queryfiles
-	queries := make(map[string]string, 0)
-	for _, asset := range AssetNames() {
-
-		if !strings.Contains(asset, dsnURL.Scheme) {
-			continue
-		}
-
-		body, err := Asset(asset)
-		if err != nil {
-			return nil, err
-		}
-
-		queryFile := filepath.Base(asset)
-
-		queries[queryFile] = string(body)
-	}
-
-	var (
-		database Database
-		err      error
-	)
-
-	switch dsnURL.Scheme {
-	case "postgres":
-
-		// postgres://[user]:[password]@[host]:[port]/[path]?[query]
-		newDBO, err := sql.Open(dsnURL.Scheme, dsnURL.String())
-		if err != nil {
-			return nil, err
-		}
-
-		database = &Postgres{
-			dbo:     newDBO,
-			flogger: flogger,
-			queries: queries,
-		}
-
-	case "sqlite3":
-
-		// Create directory where the db file will be created if not exists.
-		if _, err := os.Stat(filepath.Dir(dsnURL.Path)); os.IsNotExist(err) {
-			err := os.MkdirAll(filepath.Dir(dsnURL.Path), 0755)
-			if err != nil {
-				return nil, err
-			}
-		}
-
-		// sqlite3:///[path]?[query]    flucky dsn
-		// file:///[path]?[query]       sql-lib dsn
-		newDBO, err := sql.Open(dsnURL.Scheme, fmt.Sprintf("file://%v?%v", dsnURL.Path, dsnURL.RawQuery))
-		if err != nil {
-			return nil, err
-		}
-
-		database = &SQLite{
-			dbo:     newDBO,
-			flogger: flogger,
-			queries: queries,
-		}
-	default:
-		return nil, fmt.Errorf("Unsupported database scheme: %v", dsnURL.Scheme)
-	}
-
-	// Initialize database scheme if not exists
-	err = database.Scheme(context.Background())
-	if err != nil {
-		return nil, err
-	}
-
-	return database, nil
-}

pkg/repository/db/postgres.go

@@ -1,746 +0,0 @@
-package db
-
-import (
-	"context"
-	"database/sql"
-	"fmt"
-	"time"
-
-	"git.cryptic.systems/volker.raschek/flucky/pkg/types"
-	"git.cryptic.systems/volker.raschek/go-logger"
-)
-
-// Postgres implementation
-type Postgres struct {
-	dbo     *sql.DB
-	flogger logger.Logger
-	queries map[string]string
-}
-
-// Close closes the database and prevents new queries from starting. Close then
-// waits for all queries that have started processing on the server to finish.
-func (postgres *Postgres) Close() error {
-	return postgres.dbo.Close()
-}
-
-// DeleteDevices from the database
-func (postgres *Postgres) DeleteDevices(ctx context.Context, deviceIDs ...string) error {
-	queryFile := "deleteDevice.sql"
-	query, present := postgres.queries[queryFile]
-	if !present {
-		return fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
-	}
-
-	tx, err := postgres.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: false})
-	if err != nil {
-		return fmt.Errorf("Failed to begin new transaction: %v", err)
-	}
-
-	stmt, err := tx.Prepare(query)
-	if err != nil {
-		return fmt.Errorf("Failed to prepare statement: %v", err)
-	}
-	defer stmt.Close()
-
-	for _, deviceID := range deviceIDs {
-		_, err = stmt.Exec(deviceID)
-		if err != nil {
-			tx.Rollback()
-			return err
-		}
-	}
-
-	return tx.Commit()
-}
-
-// DeleteSensors from the database
-func (postgres *Postgres) DeleteSensors(ctx context.Context, sensorIDs ...string) error {
-	queryFile := "deleteSensor.sql"
-	query, present := postgres.queries[queryFile]
-	if !present {
-		return fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
-	}
-
-	tx, err := postgres.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: false})
-	if err != nil {
-		return fmt.Errorf("Failed to begin new transaction: %v", err)
-	}
-
-	stmt, err := tx.Prepare(query)
-	if err != nil {
-		return fmt.Errorf("Failed to prepare statement: %v", err)
-	}
-	defer stmt.Close()
-
-	for _, sensorID := range sensorIDs {
-		_, err = stmt.Exec(sensorID)
-		if err != nil {
-			tx.Rollback()
-			return err
-		}
-	}
-
-	return tx.Commit()
-}
-
-// InsertDevices into the database
-func (postgres *Postgres) InsertDevices(ctx context.Context, devices ...*types.Device) error {
-	queryFile := "insertDevice.sql"
-	query, present := postgres.queries[queryFile]
-	if !present {
-		return fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
-	}
-
-	tx, err := postgres.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: false})
-	if err != nil {
-		return fmt.Errorf("Failed to begin new transaction: %v", err)
-	}
-
-	stmt, err := tx.Prepare(query)
-	if err != nil {
-		return fmt.Errorf("Failed to prepare statement: %v", err)
-	}
-	defer stmt.Close()
-
-	for _, device := range devices {
-		_, err = stmt.Exec(&device.ID, &device.Name, &device.Location, &device.CreationDate, &device.UpdateDate)
-		if err != nil {
-			tx.Rollback()
-			return fmt.Errorf("Failed to execute statement: %v", err)
-		}
-	}
-
-	return tx.Commit()
-}
-
-// InsertMeasuredValues into the database
-func (postgres *Postgres) InsertMeasuredValues(ctx context.Context, measuredValues ...*types.MeasuredValue) error {
-	splittedMeasuredValues := make(map[string][]*types.MeasuredValue, 0)
-
-	for _, measuredValue := range measuredValues {
-		if _, ok := splittedMeasuredValues[measuredValue.ValueType]; !ok {
-			splittedMeasuredValues[measuredValue.ValueType] = make([]*types.MeasuredValue, 0)
-		}
-		splittedMeasuredValues[measuredValue.ValueType] = append(splittedMeasuredValues[measuredValue.ValueType], measuredValue)
-	}
-
-	tx, err := postgres.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: false})
-	if err != nil {
-		return fmt.Errorf("Failed to begin new transaction: %v", err)
-	}
-
-	// General insert function
-	insert := func(tx *sql.Tx, queryFile string, measuredValues []*types.MeasuredValue) error {
-		query, present := postgres.queries[queryFile]
-		if !present {
-			return fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
-		}
-
-		stmt, err := tx.Prepare(query)
-		if err != nil {
-			return fmt.Errorf("Failed to prepare statement: %v", err)
-		}
-		defer stmt.Close()
-
-		for _, measuredValue := range measuredValues {
-			_, err := stmt.Exec(
-				&measuredValue.ID,
-				&measuredValue.Value,
-				&measuredValue.Date,
-				&measuredValue.SensorID,
-				&measuredValue.CreationDate,
-				&measuredValue.UpdateDate,
-			)
-
-			if err != nil {
-				return fmt.Errorf("Failed to execute statement: %v", err)
-			}
-		}
-
-		return nil
-	}
-
-	for measuredValueType, measuredValues := range splittedMeasuredValues {
-		var queryFile string
-
-		switch measuredValueType {
-		case "humidity":
-			queryFile = "insertHumidity.sql"
-		case "pressure":
-			queryFile = "insertPressure.sql"
-		case "temperature":
-			queryFile = "insertTemperature.sql"
-		default:
-			tx.Rollback()
-			return fmt.Errorf("Measured value type %v not supported", measuredValueType)
-		}
-
-		err := insert(tx, queryFile, measuredValues)
-		if err != nil {
-			tx.Rollback()
-			return err
-		}
-	}
-
-	return tx.Commit()
-}
-
-// InsertSensors into the database
-func (postgres *Postgres) InsertSensors(ctx context.Context, sensors ...*types.Sensor) error {
-	queryFile := "insertSensor.sql"
-	query, present := postgres.queries[queryFile]
-	if !present {
-		return fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
-	}
-
-	tx, err := postgres.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: false})
-	if err != nil {
-		return fmt.Errorf("Failed to begin new transaction: %v", err)
-	}
-
-	stmt, err := tx.Prepare(query)
-	if err != nil {
-		return fmt.Errorf("Failed to prepare statement: %v", err)
-	}
-	defer stmt.Close()
-
-	for _, sensor := range sensors {
-		_, err = stmt.Exec(
-			&sensor.ID,
-			&sensor.Name,
-			&sensor.Location,
-			&sensor.WireID,
-			&sensor.I2CBus,
-			&sensor.I2CAddress,
-			&sensor.GPIONumber,
-			&sensor.Model,
-			&sensor.Enabled,
-			&sensor.TickDuration,
-			&sensor.DeviceID,
-			&sensor.CreationDate,
-			&sensor.UpdateDate,
-		)
-		if err != nil {
-			tx.Rollback()
-			return fmt.Errorf("Failed to execute statement: %v", err)
-		}
-	}
-
-	return tx.Commit()
-}
-
-// Scheme creates all required tables if not exist
-func (postgres *Postgres) Scheme(ctx context.Context) error {
-	for _, query := range []string{
-		postgres.queries["createTableDevices.sql"],
-		postgres.queries["createTableSensors.sql"],
-		postgres.queries["createTableHumidities.sql"],
-		postgres.queries["createTablePressures.sql"],
-		postgres.queries["createTableTemperatures.sql"],
-	} {
-		_, err := postgres.dbo.ExecContext(ctx, query)
-		if err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-// SelectDevice from database
-func (postgres *Postgres) SelectDevice(ctx context.Context, id string) (*types.Device, error) {
-	queryFile := "selectDevice.sql"
-	query, present := postgres.queries[queryFile]
-	if !present {
-		return nil, fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
-	}
-
-	tx, err := postgres.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: true})
-	if err != nil {
-		return nil, fmt.Errorf("Failed to begin new transaction: %v", err)
-	}
-
-	devices, err := postgres.selectDevices(tx, query, id)
-	if err != nil {
-		return nil, err
-	}
-
-	err = tx.Commit()
-	if err != nil {
-		return nil, err
-	}
-
-	if len(devices) == 0 {
-		return nil, nil
-	}
-
-	return devices[0], nil
-}
-
-// SelectDevices from the database
-func (postgres *Postgres) SelectDevices(ctx context.Context) ([]*types.Device, error) {
-	queryFile := "selectDevices.sql"
-	query, present := postgres.queries[queryFile]
-	if !present {
-		return nil, fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
-	}
-
-	tx, err := postgres.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: true})
-	if err != nil {
-		return nil, fmt.Errorf("Failed to begin new transaction: %v", err)
-	}
-
-	devices, err := postgres.selectDevices(tx, query)
-	if err != nil {
-		return nil, err
-	}
-
-	err = tx.Commit()
-	if err != nil {
-		return nil, fmt.Errorf("Failed to commit transaction: %v", err)
-	}
-
-	return devices, nil
-}
-
-func (postgres *Postgres) selectDevices(tx *sql.Tx, query string, args ...interface{}) ([]*types.Device, error) {
-	stmt, err := tx.Prepare(query)
-	if err != nil {
-		return nil, fmt.Errorf("Failed to prepare statement: %v", err)
-	}
-	defer stmt.Close()
-
-	rows, err := stmt.Query(args...)
-	if err != nil {
-		return nil, fmt.Errorf("Failed to query statement: %v", err)
-	}
-
-	devices := make([]*types.Device, 0)
-	for rows.Next() {
-		device := new(types.Device)
-		err = rows.Scan(
-			&device.ID,
-			&device.Name,
-			&device.Location,
-			&device.CreationDate,
-			&device.UpdateDate,
-		)
-		if err != nil {
-			return nil, fmt.Errorf("Failed to scan row: %v", err)
-		}
-		devices = append(devices, device)
-	}
-
-	return devices, nil
-}
-
-// SelectHumidity returns humidity from the database
-func (postgres *Postgres) SelectHumidity(ctx context.Context, id string) (*types.MeasuredValue, error) {
-	queryFile := "selectHumidity.sql"
-	query, present := postgres.queries[queryFile]
-	if !present {
-		return nil, fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
-	}
-
-	tx, err := postgres.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: true})
-	if err != nil {
-		return nil, err
-	}
-
-	measuredValues, err := postgres.selectMeasuredValue(tx, query, id)
-	if err != nil {
-		return nil, err
-	}
-
-	err = tx.Commit()
-	if err != nil {
-		return nil, err
-	}
-
-	if measuredValues == nil {
-		return nil, nil
-	}
-
-	for _, measuredValue := range measuredValues {
-		measuredValue.ValueType = "humidity"
-	}
-
-	return measuredValues[0], nil
-}
-
-// SelectHumidities returns humidities from the database
-func (postgres *Postgres) SelectHumidities(ctx context.Context) ([]*types.MeasuredValue, error) {
-	queryFile := "selectHumidities.sql"
-	query, present := postgres.queries[queryFile]
-	if !present {
-		return nil, fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
-	}
-
-	tx, err := postgres.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: true})
-	if err != nil {
-		return nil, err
-	}
-
-	measuredValues, err := postgres.selectMeasuredValue(tx, query, nil)
-	if err != nil {
-		return nil, err
-	}
-
-	err = tx.Commit()
-	if err != nil {
-		return nil, err
-	}
-
-	for _, measuredValue := range measuredValues {
-		measuredValue.ValueType = "humidity"
-	}
-
-	return measuredValues, nil
-}
-
-func (postgres *Postgres) selectMeasuredValue(tx *sql.Tx, query string, args ...interface{}) ([]*types.MeasuredValue, error) {
-	stmt, err := tx.Prepare(query)
-	if err != nil {
-		tx.Rollback()
-		return nil, err
-	}
-	defer stmt.Close()
-
-	rows, err := stmt.Query(args...)
-	if err != nil {
-		tx.Rollback()
-		return nil, err
-	}
-
-	measuredValues := make([]*types.MeasuredValue, 0)
-	for rows.Next() {
-		measuredValue := new(types.MeasuredValue)
-		err := rows.Scan(
-			&measuredValue.ID,
-			&measuredValue.Value,
-			&measuredValue.SensorID,
-			&measuredValue.Date,
-			&measuredValue.CreationDate,
-			&measuredValue.UpdateDate,
-		)
-
-		if err != nil {
-			tx.Rollback()
-			return nil, err
-		}
-
-		measuredValues = append(measuredValues, measuredValue)
-	}
-
-	return measuredValues, nil
-}
-
-// SelectPressure returns pressure from the database
-func (postgres *Postgres) SelectPressure(ctx context.Context, id string) (*types.MeasuredValue, error) {
-	queryFile := "selectPressure.sql"
-	query, present := postgres.queries[queryFile]
-	if !present {
-		return nil, fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
-	}
-
-	tx, err := postgres.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: true})
-	if err != nil {
-		return nil, err
-	}
-
-	measuredValues, err := postgres.selectMeasuredValue(tx, query, id)
-	if err != nil {
-		return nil, err
-	}
-
-	err = tx.Commit()
-	if err != nil {
-		return nil, err
-	}
-
-	if measuredValues == nil {
-		return nil, nil
-	}
-
-	for _, measuredValue := range measuredValues {
-		measuredValue.ValueType = "pressure"
-	}
-
-	return measuredValues[0], nil
-}
-
-// SelectPressures returns pressure from the database
-func (postgres *Postgres) SelectPressures(ctx context.Context) ([]*types.MeasuredValue, error) {
-	queryFile := "selectPressures.sql"
-	query, present := postgres.queries[queryFile]
-	if !present {
-		return nil, fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
-	}
-
-	tx, err := postgres.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: true})
-	if err != nil {
-		return nil, err
-	}
-
-	measuredValues, err := postgres.selectMeasuredValue(tx, query, nil)
-	if err != nil {
-		return nil, err
-	}
-
-	err = tx.Commit()
-	if err != nil {
-		return nil, err
-	}
-
-	for _, measuredValue := range measuredValues {
-		measuredValue.ValueType = "pressure"
-	}
-
-	return measuredValues, nil
-}
-
-// SelectSensor from database
-func (postgres *Postgres) SelectSensor(ctx context.Context, id string) (*types.Sensor, error) {
-	queryFile := "selectSensor.sql"
-	query, present := postgres.queries[queryFile]
-	if !present {
-		return nil, fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
-	}
-
-	tx, err := postgres.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: true})
-	if err != nil {
-		return nil, fmt.Errorf("Failed to begin new transaction: %v", err)
-	}
-
-	sensors, err := postgres.selectSensors(tx, query, id)
-	if err != nil {
-		return nil, err
-	}
-
-	err = tx.Commit()
-	if err != nil {
-		return nil, fmt.Errorf("Failed to commit transaction: %v", err)
-	}
-
-	if len(sensors) == 0 {
-		return nil, nil
-	}
-
-	return sensors[0], nil
-}
-
-// SelectSensors from the database
-func (postgres *Postgres) SelectSensors(ctx context.Context) ([]*types.Sensor, error) {
-	queryFile := "selectSensors.sql"
-	query, present := postgres.queries[queryFile]
-	if !present {
-		return nil, fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
-	}
-
-	tx, err := postgres.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: true})
-	if err != nil {
-		return nil, fmt.Errorf("Failed to begin new transaction: %v", err)
-	}
-
-	sensors, err := postgres.selectSensors(tx, query)
-	if err != nil {
-		return nil, err
-	}
-
-	err = tx.Commit()
-	if err != nil {
-		return nil, fmt.Errorf("Failed to commit transaction: %v", err)
-	}
-
-	return sensors, nil
-}
-
-func (postgres *Postgres) selectSensors(tx *sql.Tx, query string, args ...interface{}) ([]*types.Sensor, error) {
-	stmt, err := tx.Prepare(query)
-	if err != nil {
-		return nil, fmt.Errorf("Failed to prepare statement: %v", err)
-	}
-	defer stmt.Close()
-
-	rows, err := stmt.Query(args...)
-	if err != nil {
-		return nil, fmt.Errorf("Failed to query statement: %v", err)
-	}
-
-	sensors := make([]*types.Sensor, 0)
-	for rows.Next() {
-		sensor := new(types.Sensor)
-		err = rows.Scan(
-			&sensor.ID,
-			&sensor.Name,
-			&sensor.Location,
-			&sensor.WireID,
-			&sensor.I2CBus,
-			&sensor.I2CAddress,
-			&sensor.GPIONumber,
-			&sensor.Model,
-			&sensor.Enabled,
-			&sensor.TickDuration,
-			&sensor.DeviceID,
-			&sensor.CreationDate,
-			&sensor.UpdateDate,
-		)
-
-		if err != nil {
-			return nil, fmt.Errorf("Failed to scan row: %v", err)
-		}
-		sensors = append(sensors, sensor)
-	}
-
-	return sensors, nil
-}
-
-// SelectTemperature returns temperatures from the database
-func (postgres *Postgres) SelectTemperature(ctx context.Context, id string) (*types.MeasuredValue, error) {
-	queryFile := "selectTemperature.sql"
-	query, present := postgres.queries[queryFile]
-	if !present {
-		return nil, fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
-	}
-
-	tx, err := postgres.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: true})
-	if err != nil {
-		return nil, err
-	}
-
-	measuredValues, err := postgres.selectMeasuredValue(tx, query, id)
-	if err != nil {
-		return nil, err
-	}
-
-	err = tx.Commit()
-	if err != nil {
-		return nil, err
-	}
-
-	if measuredValues == nil {
-		return nil, nil
-	}
-
-	for _, measuredValue := range measuredValues {
-		measuredValue.ValueType = "temperatures"
-	}
-
-	return measuredValues[0], nil
-}
-
-// SelectTemperatures returns temperatures from the database
-func (postgres *Postgres) SelectTemperatures(ctx context.Context) ([]*types.MeasuredValue, error) {
-	queryFile := "selectTemperatures.sql"
-	query, present := postgres.queries[queryFile]
-	if !present {
-		return nil, fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
-	}
-
-	tx, err := postgres.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: true})
-	if err != nil {
-		return nil, err
-	}
-
-	measuredValues, err := postgres.selectMeasuredValue(tx, query, nil)
-	if err != nil {
-		return nil, err
-	}
-
-	err = tx.Commit()
-	if err != nil {
-		return nil, err
-	}
-
-	for _, measuredValue := range measuredValues {
-		measuredValue.ValueType = "temperatures"
-	}
-
-	return measuredValues, nil
-}
-
-// UpdateDevices updates a device in the database
-func (postgres *Postgres) UpdateDevices(ctx context.Context, devices ...*types.Device) error {
-	queryFile := "updateDevice.sql"
-	query, present := postgres.queries[queryFile]
-	if !present {
-		return fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
-	}
-
-	tx, err := postgres.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: false})
-	if err != nil {
-		return err
-	}
-
-	stmt, err := tx.Prepare(query)
-	if err != nil {
-		tx.Rollback()
-		return err
-	}
-	defer stmt.Close()
-
-	for _, device := range devices {
-		now := time.Now()
-		device.UpdateDate = &now
-
-		_, err := stmt.Exec(
-			&device.Name,
-			&device.Location,
-			&device.CreationDate,
-			&device.UpdateDate,
-			&device.ID,
-		)
-		if err != nil {
-			tx.Rollback()
-			return err
-		}
-	}
-
-	return tx.Commit()
-}
-
-// UpdateSensors updates a sensor in the database
-func (postgres *Postgres) UpdateSensors(ctx context.Context, sensors ...*types.Sensor) error {
-	queryFile := "updateSensor.sql"
-	query, present := postgres.queries[queryFile]
-	if !present {
-		return fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
-	}
-
-	tx, err := postgres.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: false})
-	if err != nil {
-		return err
-	}
-
-	stmt, err := tx.Prepare(query)
-	if err != nil {
-		tx.Rollback()
-		return err
-	}
-	defer stmt.Close()
-
-	for _, sensor := range sensors {
-		now := time.Now()
-		sensor.UpdateDate = &now
-		_, err := stmt.Exec(
-			&sensor.Name,
-			&sensor.Location,
-			&sensor.WireID,
-			&sensor.I2CBus,
-			&sensor.I2CAddress,
-			&sensor.GPIONumber,
-			&sensor.Model,
-			&sensor.Enabled,
-			&sensor.TickDuration,
-			&sensor.DeviceID,
-			&sensor.CreationDate,
-			&sensor.UpdateDate,
-			&sensor.ID,
-		)
-		if err != nil {
-			tx.Rollback()
-			return err
-		}
-	}
-
-	return tx.Commit()
-}

pkg/repository/db/postgres/createTableHumidities.sql

@@ -1,14 +0,0 @@
-CREATE TABLE IF NOT EXISTS humidities (
-  id                      CHAR(36)                                                CONSTRAINT pk_humidities PRIMARY KEY,
-  value                   NUMERIC(10,3)                                           NOT NULL,
-  date                    TIMESTAMP                                               NOT NULL,
-  sensor_id               CHAR(36)                                                NOT NULL,
-  creation_date           TIMESTAMP                   DEFAULT CURRENT_TIMESTAMP   NOT NULL,
-  update_date             TIMESTAMP
-);
-
-ALTER TABLE humidities
-ADD FOREIGN KEY (sensor_id)
-REFERENCES sensors(sensor_id)
-ON DELETE CASCADE
-ON UPDATE CASCADE;

pkg/repository/db/postgres/createTablePressures.sql

@@ -1,14 +0,0 @@
-CREATE TABLE IF NOT EXISTS pressures (
-  id                      CHAR(36)                                                CONSTRAINT pk_pressures PRIMARY KEY,
-  value                   NUMERIC(10,3)                                           NOT NULL,
-  date                    TIMESTAMP                                               NOT NULL,
-  sensor_id               CHAR(36)                                                NOT NULL,
-  creation_date           TIMESTAMP                   DEFAULT CURRENT_TIMESTAMP   NOT NULL,
-  update_date             TIMESTAMP
-);
-
-ALTER TABLE pressures
-ADD FOREIGN KEY (sensor_id)
-REFERENCES sensors(sensor_id)
-ON DELETE CASCADE
-ON UPDATE CASCADE;

pkg/repository/db/postgres/createTableTemperatures.sql

@@ -1,14 +0,0 @@
-CREATE TABLE IF NOT EXISTS temperatures (
-  id                      CHAR(36)                                                CONSTRAINT pk_temperatures PRIMARY KEY,
-  value                   NUMERIC(10,3)                                           NOT NULL,
-  date                    TIMESTAMP                                               NOT NULL,
-  sensor_id               CHAR(36)                                                NOT NULL,
-  creation_date           TIMESTAMP                   DEFAULT CURRENT_TIMESTAMP   NOT NULL,
-  update_date             TIMESTAMP
-);
-
-ALTER TABLE temperatures
-ADD FOREIGN KEY (sensor_id)
-REFERENCES sensors(sensor_id)
-ON DELETE CASCADE
-ON UPDATE CASCADE;

pkg/repository/db/sqlite.go

@@ -1,740 +0,0 @@
-package db
-
-import (
-	"context"
-	"database/sql"
-	"fmt"
-
-	"git.cryptic.systems/volker.raschek/flucky/pkg/types"
-	"git.cryptic.systems/volker.raschek/go-logger"
-)
-
-// SQLite implementation
-type SQLite struct {
-	dbo     *sql.DB
-	flogger logger.Logger
-	queries map[string]string
-}
-
-// Close closes the database and prevents new queries from starting. Close then
-// waits for all queries that have started processing on the server to finish.
-func (sqlite *SQLite) Close() error {
-	return sqlite.dbo.Close()
-}
-
-// DeleteDevices from the database
-func (sqlite *SQLite) DeleteDevices(ctx context.Context, deviceIDs ...string) error {
-	queryFile := "deleteDevice.sql"
-	query, present := sqlite.queries[queryFile]
-	if !present {
-		return fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
-	}
-
-	tx, err := sqlite.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: false})
-	if err != nil {
-		return fmt.Errorf("Failed to begin new transaction: %v", err)
-	}
-
-	stmt, err := tx.Prepare(query)
-	if err != nil {
-		return fmt.Errorf("Failed to prepare statement: %v", err)
-	}
-	defer stmt.Close()
-
-	for _, deviceID := range deviceIDs {
-		_, err = stmt.Exec(deviceID)
-		if err != nil {
-			tx.Rollback()
-			return err
-		}
-	}
-
-	return tx.Commit()
-}
-
-// DeleteSensors from the database
-func (sqlite *SQLite) DeleteSensors(ctx context.Context, sensorIDs ...string) error {
-	queryFile := "deleteSensor.sql"
-	query, present := sqlite.queries[queryFile]
-	if !present {
-		return fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
-	}
-
-	tx, err := sqlite.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: false})
-	if err != nil {
-		return fmt.Errorf("Failed to begin new transaction: %v", err)
-	}
-
-	stmt, err := tx.Prepare(query)
-	if err != nil {
-		return fmt.Errorf("Failed to prepare statement: %v", err)
-	}
-	defer stmt.Close()
-
-	for _, sensorID := range sensorIDs {
-		_, err = stmt.Exec(sensorID)
-		if err != nil {
-			tx.Rollback()
-			return err
-		}
-	}
-
-	return tx.Commit()
-}
-
-// InsertDevices into the database
-func (sqlite *SQLite) InsertDevices(ctx context.Context, devices ...*types.Device) error {
-	queryFile := "insertDevice.sql"
-	query, present := sqlite.queries[queryFile]
-	if !present {
-		return fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
-	}
-
-	tx, err := sqlite.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: false})
-	if err != nil {
-		return fmt.Errorf("Failed to begin new transaction: %v", err)
-	}
-
-	stmt, err := tx.Prepare(query)
-	if err != nil {
-		return fmt.Errorf("Failed to prepare statement: %v", err)
-	}
-	defer stmt.Close()
-
-	for _, device := range devices {
-		_, err = stmt.Exec(&device.ID, &device.Name, &device.Location, &device.CreationDate, &device.UpdateDate)
-		if err != nil {
-			tx.Rollback()
-			return fmt.Errorf("Failed to execute statement: %v", err)
-		}
-	}
-
-	return tx.Commit()
-}
-
-// InsertMeasuredValues into the database
-func (sqlite *SQLite) InsertMeasuredValues(ctx context.Context, measuredValues ...*types.MeasuredValue) error {
-	splittedMeasuredValues := make(map[string][]*types.MeasuredValue, 0)
-
-	for _, measuredValue := range measuredValues {
-		if _, ok := splittedMeasuredValues[measuredValue.ValueType]; !ok {
-			splittedMeasuredValues[measuredValue.ValueType] = make([]*types.MeasuredValue, 0)
-		}
-		splittedMeasuredValues[measuredValue.ValueType] = append(splittedMeasuredValues[measuredValue.ValueType], measuredValue)
-	}
-
-	tx, err := sqlite.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: false})
-	if err != nil {
-		return fmt.Errorf("Failed to begin new transaction: %v", err)
-	}
-
-	// General insert function
-	insert := func(tx *sql.Tx, queryFile string, measuredValues []*types.MeasuredValue) error {
-		query, present := sqlite.queries[queryFile]
-		if !present {
-			return fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
-		}
-
-		stmt, err := tx.Prepare(query)
-		if err != nil {
-			return fmt.Errorf("Failed to prepare statement: %v", err)
-		}
-		defer stmt.Close()
-
-		for _, measuredValue := range measuredValues {
-			_, err := stmt.Exec(
-				&measuredValue.ID,
-				&measuredValue.Value,
-				&measuredValue.Date,
-				&measuredValue.SensorID,
-				&measuredValue.CreationDate,
-				&measuredValue.UpdateDate,
-			)
-
-			if err != nil {
-				return fmt.Errorf("Failed to execute statement: %v", err)
-			}
-		}
-
-		return nil
-	}
-
-	for measuredValueType, measuredValues := range splittedMeasuredValues {
-		var queryFile string
-
-		switch measuredValueType {
-		case "humidity":
-			queryFile = "insertHumidity.sql"
-		case "pressure":
-			queryFile = "insertPressure.sql"
-		case "temperature":
-			queryFile = "insertTemperature.sql"
-		default:
-			tx.Rollback()
-			return fmt.Errorf("Measured value type %v not supported", measuredValueType)
-		}
-
-		err := insert(tx, queryFile, measuredValues)
-		if err != nil {
-			tx.Rollback()
-			return err
-		}
-	}
-
-	return tx.Commit()
-}
-
-// InsertSensors into the database
-func (sqlite *SQLite) InsertSensors(ctx context.Context, sensors ...*types.Sensor) error {
-	queryFile := "insertSensor.sql"
-	query, present := sqlite.queries[queryFile]
-	if !present {
-		return fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
-	}
-
-	tx, err := sqlite.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: false})
-	if err != nil {
-		return fmt.Errorf("Failed to begin new transaction: %v", err)
-	}
-
-	stmt, err := tx.Prepare(query)
-	if err != nil {
-		return fmt.Errorf("Failed to prepare statement: %v", err)
-	}
-	defer stmt.Close()
-
-	for _, sensor := range sensors {
-		_, err = stmt.Exec(
-			&sensor.ID,
-			&sensor.Name,
-			&sensor.Location,
-			&sensor.WireID,
-			&sensor.I2CBus,
-			&sensor.I2CAddress,
-			&sensor.GPIONumber,
-			&sensor.Model,
-			&sensor.Enabled,
-			&sensor.TickDuration,
-			&sensor.DeviceID,
-			&sensor.CreationDate,
-			&sensor.UpdateDate,
-		)
-		if err != nil {
-			tx.Rollback()
-			return fmt.Errorf("Failed to execute statement: %v", err)
-		}
-	}
-
-	return tx.Commit()
-}
-
-// Scheme creates all required tables if not exist
-func (sqlite *SQLite) Scheme(ctx context.Context) error {
-	for _, query := range []string{
-		sqlite.queries["createTableDevices.sql"],
-		sqlite.queries["createTableSensors.sql"],
-		sqlite.queries["createTableHumidities.sql"],
-		sqlite.queries["createTablePressures.sql"],
-		sqlite.queries["createTableTemperatures.sql"],
-	} {
-		_, err := sqlite.dbo.ExecContext(ctx, query)
-		if err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-// SelectDevice from database
-func (sqlite *SQLite) SelectDevice(ctx context.Context, id string) (*types.Device, error) {
-	queryFile := "selectDevice.sql"
-	query, present := sqlite.queries[queryFile]
-	if !present {
-		return nil, fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
-	}
-
-	tx, err := sqlite.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: true})
-	if err != nil {
-		return nil, fmt.Errorf("Failed to begin new transaction: %v", err)
-	}
-
-	devices, err := sqlite.selectDevices(tx, query, id)
-	if err != nil {
-		return nil, err
-	}
-
-	err = tx.Commit()
-	if err != nil {
-		return nil, err
-	}
-
-	if len(devices) == 0 {
-		return nil, nil
-	}
-
-	return devices[0], nil
-}
-
-// SelectDevices from the database
-func (sqlite *SQLite) SelectDevices(ctx context.Context) ([]*types.Device, error) {
-	queryFile := "selectDevices.sql"
-	query, present := sqlite.queries[queryFile]
-	if !present {
-		return nil, fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
-	}
-
-	tx, err := sqlite.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: true})
-	if err != nil {
-		return nil, fmt.Errorf("Failed to begin new transaction: %v", err)
-	}
-
-	devices, err := sqlite.selectDevices(tx, query)
-	if err != nil {
-		return nil, err
-	}
-
-	err = tx.Commit()
-	if err != nil {
-		return nil, fmt.Errorf("Failed to commit transaction: %v", err)
-	}
-
-	return devices, nil
-}
-
-func (sqlite *SQLite) selectDevices(tx *sql.Tx, query string, args ...interface{}) ([]*types.Device, error) {
-	stmt, err := tx.Prepare(query)
-	if err != nil {
-		return nil, fmt.Errorf("Failed to prepare statement: %v", err)
-	}
-	defer stmt.Close()
-
-	rows, err := stmt.Query(args...)
-	if err != nil {
-		return nil, fmt.Errorf("Failed to query statement: %v", err)
-	}
-
-	devices := make([]*types.Device, 0)
-	for rows.Next() {
-		device := new(types.Device)
-		err = rows.Scan(
-			&device.ID,
-			&device.Name,
-			&device.Location,
-			&device.CreationDate,
-			&device.UpdateDate,
-		)
-		if err != nil {
-			return nil, fmt.Errorf("Failed to scan row: %v", err)
-		}
-		devices = append(devices, device)
-	}
-
-	return devices, nil
-}
-
-// SelectHumidity returns humidity from the database
-func (sqlite *SQLite) SelectHumidity(ctx context.Context, id string) (*types.MeasuredValue, error) {
-	queryFile := "selectHumidity.sql"
-	query, present := sqlite.queries[queryFile]
-	if !present {
-		return nil, fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
-	}
-
-	tx, err := sqlite.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: true})
-	if err != nil {
-		return nil, err
-	}
-
-	measuredValues, err := sqlite.selectMeasuredValue(tx, query, id)
-	if err != nil {
-		return nil, err
-	}
-
-	err = tx.Commit()
-	if err != nil {
-		return nil, err
-	}
-
-	if measuredValues == nil {
-		return nil, nil
-	}
-
-	for _, measuredValue := range measuredValues {
-		measuredValue.ValueType = "humidity"
-	}
-
-	return measuredValues[0], nil
-}
-
-// SelectHumidities returns humidities from the database
-func (sqlite *SQLite) SelectHumidities(ctx context.Context) ([]*types.MeasuredValue, error) {
-	queryFile := "selectHumidities.sql"
-	query, present := sqlite.queries[queryFile]
-	if !present {
-		return nil, fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
-	}
-
-	tx, err := sqlite.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: true})
-	if err != nil {
-		return nil, err
-	}
-
-	measuredValues, err := sqlite.selectMeasuredValue(tx, query, nil)
-	if err != nil {
-		return nil, err
-	}
-
-	err = tx.Commit()
-	if err != nil {
-		return nil, err
-	}
-
-	for _, measuredValue := range measuredValues {
-		measuredValue.ValueType = "humidity"
-	}
-
-	return measuredValues, nil
-}
-
-func (sqlite *SQLite) selectMeasuredValue(tx *sql.Tx, query string, args ...interface{}) ([]*types.MeasuredValue, error) {
-	stmt, err := tx.Prepare(query)
-	if err != nil {
-		tx.Rollback()
-		return nil, err
-	}
-	defer stmt.Close()
-
-	rows, err := stmt.Query(args...)
-	if err != nil {
-		tx.Rollback()
-		return nil, err
-	}
-
-	measuredValues := make([]*types.MeasuredValue, 0)
-	for rows.Next() {
-		measuredValue := new(types.MeasuredValue)
-		err := rows.Scan(
-			&measuredValue.ID,
-			&measuredValue.Value,
-			&measuredValue.SensorID,
-			&measuredValue.Date,
-			&measuredValue.CreationDate,
-			&measuredValue.UpdateDate,
-		)
-
-		if err != nil {
-			tx.Rollback()
-			return nil, err
-		}
-
-		measuredValues = append(measuredValues, measuredValue)
-	}
-
-	return measuredValues, nil
-}
-
-// SelectPressure returns pressure from the database
-func (sqlite *SQLite) SelectPressure(ctx context.Context, id string) (*types.MeasuredValue, error) {
-	queryFile := "selectPressure.sql"
-	query, present := sqlite.queries[queryFile]
-	if !present {
-		return nil, fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
-	}
-
-	tx, err := sqlite.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: true})
-	if err != nil {
-		return nil, err
-	}
-
-	measuredValues, err := sqlite.selectMeasuredValue(tx, query, id)
-	if err != nil {
-		return nil, err
-	}
-
-	err = tx.Commit()
-	if err != nil {
-		return nil, err
-	}
-
-	if measuredValues == nil {
-		return nil, nil
-	}
-
-	for _, measuredValue := range measuredValues {
-		measuredValue.ValueType = "pressure"
-	}
-
-	return measuredValues[0], nil
-}
-
-// SelectPressures returns pressure from the database
-func (sqlite *SQLite) SelectPressures(ctx context.Context) ([]*types.MeasuredValue, error) {
-	queryFile := "selectPressures.sql"
-	query, present := sqlite.queries[queryFile]
-	if !present {
-		return nil, fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
-	}
-
-	tx, err := sqlite.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: true})
-	if err != nil {
-		return nil, err
-	}
-
-	measuredValues, err := sqlite.selectMeasuredValue(tx, query, nil)
-	if err != nil {
-		return nil, err
-	}
-
-	err = tx.Commit()
-	if err != nil {
-		return nil, err
-	}
-
-	for _, measuredValue := range measuredValues {
-		measuredValue.ValueType = "pressure"
-	}
-
-	return measuredValues, nil
-}
-
-// SelectSensor from database
-func (sqlite *SQLite) SelectSensor(ctx context.Context, id string) (*types.Sensor, error) {
-	queryFile := "selectSensor.sql"
-	query, present := sqlite.queries[queryFile]
-	if !present {
-		return nil, fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
-	}
-
-	tx, err := sqlite.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: true})
-	if err != nil {
-		return nil, fmt.Errorf("Failed to begin new transaction: %v", err)
-	}
-
-	sensors, err := sqlite.selectSensors(tx, query, id)
-	if err != nil {
-		return nil, err
-	}
-
-	err = tx.Commit()
-	if err != nil {
-		return nil, fmt.Errorf("Failed to commit transaction: %v", err)
-	}
-
-	if len(sensors) == 0 {
-		return nil, nil
-	}
-
-	return sensors[0], nil
-}
-
-// SelectSensors from the database
-func (sqlite *SQLite) SelectSensors(ctx context.Context) ([]*types.Sensor, error) {
-	queryFile := "selectSensors.sql"
-	query, present := sqlite.queries[queryFile]
-	if !present {
-		return nil, fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
-	}
-
-	tx, err := sqlite.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: true})
-	if err != nil {
-		return nil, fmt.Errorf("Failed to begin new transaction: %v", err)
-	}
-
-	sensors, err := sqlite.selectSensors(tx, query)
-	if err != nil {
-		return nil, err
-	}
-
-	err = tx.Commit()
-	if err != nil {
-		return nil, fmt.Errorf("Failed to commit transaction: %v", err)
-	}
-
-	return sensors, nil
-}
-
-func (sqlite *SQLite) selectSensors(tx *sql.Tx, query string, args ...interface{}) ([]*types.Sensor, error) {
-	stmt, err := tx.Prepare(query)
-	if err != nil {
-		return nil, fmt.Errorf("Failed to prepare statement: %v", err)
-	}
-	defer stmt.Close()
-
-	rows, err := stmt.Query(args...)
-	if err != nil {
-		return nil, fmt.Errorf("Failed to query statement: %v", err)
-	}
-
-	sensors := make([]*types.Sensor, 0)
-	for rows.Next() {
-		sensor := new(types.Sensor)
-		err = rows.Scan(
-			&sensor.ID,
-			&sensor.Name,
-			&sensor.Location,
-			&sensor.WireID,
-			&sensor.I2CBus,
-			&sensor.I2CAddress,
-			&sensor.GPIONumber,
-			&sensor.Model,
-			&sensor.Enabled,
-			&sensor.TickDuration,
-			&sensor.DeviceID,
-			&sensor.CreationDate,
-			&sensor.UpdateDate,
-		)
-
-		if err != nil {
-			return nil, fmt.Errorf("Failed to scan row: %v", err)
-		}
-		sensors = append(sensors, sensor)
-	}
-
-	return sensors, nil
-}
-
-// SelectTemperature returns temperatures from the database
-func (sqlite *SQLite) SelectTemperature(ctx context.Context, id string) (*types.MeasuredValue, error) {
-	queryFile := "selectTemperature.sql"
-	query, present := sqlite.queries[queryFile]
-	if !present {
-		return nil, fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
-	}
-
-	tx, err := sqlite.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: true})
-	if err != nil {
-		return nil, err
-	}
-
-	measuredValues, err := sqlite.selectMeasuredValue(tx, query, id)
-	if err != nil {
-		return nil, err
-	}
-
-	err = tx.Commit()
-	if err != nil {
-		return nil, err
-	}
-
-	if measuredValues == nil {
-		return nil, nil
-	}
-
-	for _, measuredValue := range measuredValues {
-		measuredValue.ValueType = "temperatures"
-	}
-
-	return measuredValues[0], nil
-}
-
-// SelectTemperatures returns temperatures from the database
-func (sqlite *SQLite) SelectTemperatures(ctx context.Context) ([]*types.MeasuredValue, error) {
-	queryFile := "selectTemperatures.sql"
-	query, present := sqlite.queries[queryFile]
-	if !present {
-		return nil, fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
-	}
-
-	tx, err := sqlite.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: true})
-	if err != nil {
-		return nil, err
-	}
-
-	measuredValues, err := sqlite.selectMeasuredValue(tx, query, nil)
-	if err != nil {
-		return nil, err
-	}
-
-	err = tx.Commit()
-	if err != nil {
-		return nil, err
-	}
-
-	for _, measuredValue := range measuredValues {
-		measuredValue.ValueType = "temperatures"
-	}
-
-	return measuredValues, nil
-}
-
-// UpdateDevices updates a device in the database
-func (sqlite *SQLite) UpdateDevices(ctx context.Context, devices ...*types.Device) error {
-	queryFile := "updateDevice.sql"
-	query, present := sqlite.queries[queryFile]
-	if !present {
-		return fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
-	}
-
-	tx, err := sqlite.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: false})
-	if err != nil {
-		return err
-	}
-
-	stmt, err := tx.Prepare(query)
-	if err != nil {
-		tx.Rollback()
-		return err
-	}
-	defer stmt.Close()
-
-	for _, device := range devices {
-		_, err := stmt.Exec(
-			&device.Name,
-			&device.Location,
-			&device.CreationDate,
-			&device.UpdateDate,
-			&device.ID,
-		)
-		if err != nil {
-			tx.Rollback()
-			return err
-		}
-	}
-
-	return tx.Commit()
-}
-
-// UpdateSensors updates a sensor in the database
-func (sqlite *SQLite) UpdateSensors(ctx context.Context, sensors ...*types.Sensor) error {
-	queryFile := "updateSensor.sql"
-	query, present := sqlite.queries[queryFile]
-	if !present {
-		return fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
-	}
-
-	tx, err := sqlite.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: false})
-	if err != nil {
-		return err
-	}
-
-	stmt, err := tx.Prepare(query)
-	if err != nil {
-		tx.Rollback()
-		return err
-	}
-	defer stmt.Close()
-
-	for _, sensor := range sensors {
-		_, err := stmt.Exec(
-			&sensor.Name,
-			&sensor.Location,
-			&sensor.WireID,
-			&sensor.I2CBus,
-			&sensor.I2CAddress,
-			&sensor.GPIONumber,
-			&sensor.Model,
-			&sensor.Enabled,
-			&sensor.TickDuration,
-			&sensor.DeviceID,
-			&sensor.CreationDate,
-			&sensor.UpdateDate,
-			&sensor.ID,
-		)
-		if err != nil {
-			tx.Rollback()
-			return err
-		}
-	}
-
-	return tx.Commit()
-}

pkg/repository/db/sqlite3/createTableDevices.sql

@@ -1,7 +0,0 @@
-CREATE TABLE IF NOT EXISTS devices (
-  device_id               CHAR(36)                                    PRIMARY KEY,
-  device_name             VARCHAR(64)                                 NOT NULL,
-  device_location         VARCHAR(64),
-  creation_date           TIMESTAMP       DEFAULT CURRENT_TIMESTAMP   NOT NULL,
-  update_date             TIMESTAMP
-);

pkg/repository/db/sqlite3/createTableHumidities.sql

@@ -1,9 +0,0 @@
-CREATE TABLE IF NOT EXISTS humidities (
-  id                      CHAR(36)                                    PRIMARY KEY,
-  value                   NUMERIC(10,3)                               NOT NULL,
-  date                    TIMESTAMP                                   NOT NULL,
-  sensor_id               CHAR(36)                                    NOT NULL,
-  creation_date           TIMESTAMP       DEFAULT CURRENT_TIMESTAMP   NOT NULL,
-  update_date             TIMESTAMP,
-  FOREIGN KEY(sensor_id) REFERENCES sensors(sensor_id)
-);

pkg/repository/db/sqlite3/createTablePressures.sql

@@ -1,9 +0,0 @@
-CREATE TABLE IF NOT EXISTS pressures (
-  id                      CHAR(36)                                    PRIMARY KEY,
-  value                   NUMERIC(10,3)                               NOT NULL,
-  date                    TIMESTAMP                                   NOT NULL,
-  sensor_id               CHAR(36)                                    NOT NULL,
-  creation_date           TIMESTAMP       DEFAULT CURRENT_TIMESTAMP   NOT NULL,
-  update_date             TIMESTAMP,
-  FOREIGN KEY(sensor_id) REFERENCES sensors(sensor_id)
-);

pkg/repository/db/sqlite3/createTableTemperatures.sql

@@ -1,9 +0,0 @@
-CREATE TABLE IF NOT EXISTS temperatures (
-  id                      CHAR(36)                                    PRIMARY KEY,
-  value                   NUMERIC(10,3)                               NOT NULL,
-  date                    TIMESTAMP                                   NOT NULL,
-  sensor_id               CHAR(36)                                    NOT NULL,
-  creation_date           TIMESTAMP       DEFAULT CURRENT_TIMESTAMP   NOT NULL,
-  update_date             TIMESTAMP,
-  FOREIGN KEY(sensor_id) REFERENCES sensors(sensor_id)
-);

pkg/repository/postgres/ddl/1_table_devices.down.sql

@@ -0,0 +1 @@
+DROP TABLE devices;

pkg/repository/postgres/ddl/1_table_devices.up.sql

@@ -1,7 +1,8 @@
-CREATE TABLE IF NOT EXISTS devices (
+CREATE TABLE devices (
-  device_id               CHAR(36)                                                CONSTRAINT pk_devices PRIMARY KEY,
+  device_id               CHAR(36)                                                NOT NULL,
   device_name             VARCHAR(64)                                             NOT NULL,
   device_location         VARCHAR(64),
-  creation_date           TIMESTAMP                   DEFAULT CURRENT_TIMESTAMP   NOT NULL,
+  creation_date           TIMESTAMP WITH TIME ZONE    DEFAULT CURRENT_TIMESTAMP   NOT NULL,
-  update_date             TIMESTAMP
+  update_date             TIMESTAMP WITH TIME ZONE,
+  CONSTRAINT pk_devices PRIMARY KEY(device_id)
 );

pkg/repository/postgres/ddl/2_table_sensors.down.sql

@@ -0,0 +1 @@
+DROP TABLE sensors;

pkg/repository/postgres/ddl/2_table_sensors.up.sql

@@ -1,5 +1,5 @@
-CREATE TABLE IF NOT EXISTS sensors (
+CREATE TABLE sensors (
-  sensor_id               CHAR(36)                                                CONSTRAINT pk_sensors PRIMARY KEY,
+  sensor_id               CHAR(36)                                                NOT NULL,
   sensor_name             VARCHAR(64)                                             NOT NULL,
   sensor_location         VARCHAR(64),
   wire_id                 VARCHAR(64),
@@ -10,12 +10,8 @@ CREATE TABLE IF NOT EXISTS sensors (
   sensor_enabled          BOOLEAN                     DEFAULT TRUE                NOT NULL,
   tick_duration           VARCHAR(6)                                              NOT NULL,
   device_id               CHAR(36)                                                NOT NULL,
-  creation_date           TIMESTAMP                   DEFAULT CURRENT_TIMESTAMP   NOT NULL,
+  creation_date           TIMESTAMP WITH TIME ZONE    DEFAULT CURRENT_TIMESTAMP   NOT NULL,
-  update_date             TIMESTAMP
+  update_date             TIMESTAMP WITH TIME ZONE,
+  CONSTRAINT pk_sensors PRIMARY KEY(sensor_id),
+  CONSTRAINT fk_sensors_device_id FOREIGN KEY (device_id) REFERENCES devices(device_id) ON DELETE CASCADE ON UPDATE CASCADE
 );
-
-ALTER TABLE sensors
-ADD FOREIGN KEY (device_id)
-REFERENCES devices(device_id)
-ON DELETE CASCADE
-ON UPDATE CASCADE;

pkg/repository/postgres/ddl/3_table_humidites.down.sql

@@ -0,0 +1 @@
+DROP TABLE humidities;

pkg/repository/postgres/ddl/3_table_humidites.up.sql

@@ -0,0 +1,10 @@
+CREATE TABLE humidities (
+  id                      CHAR(36)                                                NOT NULL,
+  value                   NUMERIC(10,3)                                           NOT NULL,
+  date                    TIMESTAMP WITH TIME ZONE                                NOT NULL,
+  sensor_id               CHAR(36)                                                NOT NULL,
+  creation_date           TIMESTAMP WITH TIME ZONE    DEFAULT CURRENT_TIMESTAMP   NOT NULL,
+  update_date             TIMESTAMP WITH TIME ZONE,
+  CONSTRAINT pk_humidites PRIMARY KEY (id),
+  CONSTRAINT pk_humidites_sensor_id FOREIGN KEY(sensor_id) REFERENCES sensors(sensor_id) ON DELETE CASCADE ON UPDATE CASCADE
+);

pkg/repository/postgres/ddl/4_table_pressures.down.sql

@@ -0,0 +1 @@
+DROP TABLE pressures;

pkg/repository/postgres/ddl/4_table_pressures.up.sql

@@ -0,0 +1,10 @@
+CREATE TABLE pressures (
+  id                      CHAR(36)                                                NOT NULL,
+  value                   NUMERIC(10,3)                                           NOT NULL,
+  date                    TIMESTAMP WITH TIME ZONE                                NOT NULL,
+  sensor_id               CHAR(36)                                                NOT NULL,
+  creation_date           TIMESTAMP WITH TIME ZONE    DEFAULT CURRENT_TIMESTAMP   NOT NULL,
+  update_date             TIMESTAMP WITH TIME ZONE,
+  CONSTRAINT pk_pressures PRIMARY KEY(id),
+  CONSTRAINT pk_pressures_sensor_id FOREIGN KEY(sensor_id) REFERENCES sensors(sensor_id) ON DELETE CASCADE ON UPDATE CASCADE
+);

pkg/repository/postgres/ddl/5_table_temperatures.down.sql

@@ -0,0 +1 @@
+DROP TABLE temperatures;

pkg/repository/postgres/ddl/5_table_temperatures.up.sql

@@ -0,0 +1,10 @@
+CREATE TABLE temperatures (
+  id                      CHAR(36)                                                NOT NULL,
+  value                   NUMERIC(10,3)                                           NOT NULL,
+  date                    TIMESTAMP WITH TIME ZONE                                NOT NULL,
+  sensor_id               CHAR(36)                                                NOT NULL,
+  creation_date           TIMESTAMP WITH TIME ZONE    DEFAULT CURRENT_TIMESTAMP   NOT NULL,
+  update_date             TIMESTAMP WITH TIME ZONE,
+  CONSTRAINT pk_temperatures PRIMARY KEY (id),
+  CONSTRAINT fk_temperatures_sensor_id FOREIGN KEY (sensor_id) REFERENCES sensors(sensor_id) ON DELETE CASCADE ON UPDATE CASCADE
+);

pkg/repository/postgres/ddl/6_constraint_fk_humidities_sensor_id.down.sql

@@ -0,0 +1,9 @@
+ALTER TABLE humidities
+DROP CONSTRAINT fk_humidites_sensor_id;
+
+ALTER TABLE humidities
+ADD CONSTRAINT pk_humidites_sensor_id
+FOREIGN KEY (sensor_id)
+REFERENCES sensors(sensor_id)
+ON DELETE CASCADE
+ON UPDATE CASCADE;

pkg/repository/postgres/ddl/6_constraint_fk_humidities_sensor_id.up.sql

@@ -0,0 +1,9 @@
+ALTER TABLE humidities
+DROP CONSTRAINT pk_humidites_sensor_id;
+
+ALTER TABLE humidities
+ADD CONSTRAINT fk_humidites_sensor_id
+FOREIGN KEY (sensor_id)
+REFERENCES sensors(sensor_id)
+ON DELETE CASCADE
+ON UPDATE CASCADE;

pkg/repository/postgres/ddl/7_constraint_fk_pressures_sensor_id.down.sql

@@ -0,0 +1,9 @@
+ALTER TABLE pressures
+DROP CONSTRAINT fk_pressures_sensor_id;
+
+ALTER TABLE pressures
+ADD CONSTRAINT pk_pressures_sensor_id
+FOREIGN KEY (sensor_id)
+REFERENCES sensors(sensor_id)
+ON DELETE CASCADE
+ON UPDATE CASCADE;

pkg/repository/postgres/ddl/7_constraint_fk_pressures_sensor_id.up.sql

@@ -0,0 +1,9 @@
+ALTER TABLE pressures
+DROP CONSTRAINT pk_pressures_sensor_id;
+
+ALTER TABLE pressures
+ADD CONSTRAINT fk_pressures_sensor_id
+FOREIGN KEY (sensor_id)
+REFERENCES sensors(sensor_id)
+ON DELETE CASCADE
+ON UPDATE CASCADE;

pkg/repository/postgres/ddl/8_table_measured_values.down.sql

@@ -0,0 +1,95 @@
+-- Remove constraints to table measured_values
+ALTER TABLE humidities
+DROP CONSTRAINT fk_humidites_measured_value_id;
+
+ALTER TABLE pressures
+DROP CONSTRAINT fk_pressures_measured_value_id;
+
+ALTER TABLE temperatures
+DROP CONSTRAINT fk_temperatures_measured_value_id;
+
+-- Rename measured_value_id to sensor_id
+ALTER TABLE humidities
+RENAME COLUMN measured_value_id TO sensor_id;
+
+ALTER TABLE pressures
+RENAME COLUMN measured_value_id TO sensor_id;
+
+ALTER TABLE temperatures
+RENAME COLUMN measured_value_id TO sensor_id;
+
+-- Add new column measures_value_id with data from sensor_id
+ALTER TABLE humidities
+ADD COLUMN measured_value_id CHAR(36);
+
+UPDATE humidities
+SET measured_value_id=sensor_id;
+
+ALTER TABLE pressures
+ADD COLUMN measured_value_id CHAR(36);
+
+UPDATE pressures
+SET measured_value_id=sensor_id;
+
+ALTER TABLE temperatures
+ADD COLUMN measured_value_id CHAR(36);
+
+UPDATE temperatures
+SET measured_value_id=sensor_id;
+
+-- Update sensor_id's
+UPDATE humidities h
+SET sensor_id = (
+  SELECT m.sensor_id
+  FROM measured_values m
+  WHERE m.id = h.measured_value_id
+);
+
+UPDATE pressures p
+SET sensor_id = (
+  SELECT m.sensor_id
+  FROM measured_values m
+  WHERE m.id = p.measured_value_id
+);
+
+UPDATE temperatures t
+SET sensor_id = (
+  SELECT m.sensor_id
+  FROM measured_values m
+  WHERE m.id = t.measured_value_id
+);
+
+-- Delete sensor_id columns
+ALTER TABLE humidities
+DROP COLUMN measured_value_id;
+
+ALTER TABLE pressures
+DROP COLUMN measured_value_id;
+
+ALTER TABLE temperatures
+DROP COLUMN measured_value_id;
+
+-- Add foreign keys
+ALTER TABLE humidities
+ADD CONSTRAINT fk_humidites_sensor_id
+FOREIGN KEY (sensor_id)
+REFERENCES sensors(sensor_id)
+ON DELETE CASCADE
+ON UPDATE CASCADE;
+
+ALTER TABLE pressures
+ADD CONSTRAINT fk_pressures_sensor_id
+FOREIGN KEY (sensor_id)
+REFERENCES sensors(sensor_id)
+ON DELETE CASCADE
+ON UPDATE CASCADE;
+
+ALTER TABLE temperatures
+ADD CONSTRAINT fk_temperatures_sensor_id
+FOREIGN KEY (sensor_id)
+REFERENCES sensors(sensor_id)
+ON DELETE CASCADE
+ON UPDATE CASCADE;
+
+-- drop measured values table
+DROP TABLE measured_values CASCADE;

pkg/repository/postgres/ddl/8_table_measured_values.up.sql

@@ -0,0 +1,130 @@
+-- Create measures_values table.
+-- This table represent a collection of different measured values, because it
+-- can be possible, that a sensor returns multiple measured values. For example
+-- the BME280 semsor returns humidity, pressure and temperature values.
+CREATE TABLE measured_values (
+  id                      CHAR(36)                                                NOT NULL,
+  sensor_id               CHAR(36)                                                NOT NULL,
+  creation_date           TIMESTAMP WITH TIME ZONE    DEFAULT CURRENT_TIMESTAMP   NOT NULL,
+  update_date             TIMESTAMP WITH TIME ZONE,
+  CONSTRAINT pk_measured_value PRIMARY KEY(id),
+  CONSTRAINT pk_measured_value_sensor_id FOREIGN KEY(sensor_id) REFERENCES sensors(sensor_id) ON DELETE CASCADE ON UPDATE CASCADE
+);
+
+-- Remove constraints to table sensor
+ALTER TABLE humidities
+DROP CONSTRAINT fk_humidites_sensor_id;
+
+ALTER TABLE pressures
+DROP CONSTRAINT fk_pressures_sensor_id;
+
+ALTER TABLE temperatures
+DROP CONSTRAINT fk_temperatures_sensor_id;
+
+-- Rename sensor_id to measured_value_id
+ALTER TABLE humidities
+RENAME COLUMN sensor_id TO measured_value_id;
+
+ALTER TABLE pressures
+RENAME COLUMN sensor_id TO measured_value_id;
+
+ALTER TABLE temperatures
+RENAME COLUMN sensor_id TO measured_value_id;
+
+-- Add new column sensor_id with data from measures_value_id
+ALTER TABLE humidities
+ADD COLUMN sensor_id CHAR(36);
+
+UPDATE humidities
+SET sensor_id=measured_value_id;
+
+ALTER TABLE pressures
+ADD COLUMN sensor_id CHAR(36);
+
+UPDATE pressures
+SET sensor_id=measured_value_id;
+
+ALTER TABLE temperatures
+ADD COLUMN sensor_id CHAR(36);
+
+UPDATE temperatures
+SET sensor_id=measured_value_id;
+
+
+DO $$
+DECLARE
+  f record;
+BEGIN
+  FOR f IN (
+    SELECT
+      md5(random()::text || clock_timestamp()::text)::uuid AS measured_value_id,
+      h.id AS humidity_id,
+      p.id AS pressure_id,
+      t.id AS temperature_id,
+      CASE WHEN h.sensor_id IS NOT NULL THEN h.sensor_id
+           WHEN p.sensor_id IS NOT NULL THEN p.sensor_id
+           WHEN t.sensor_id IS NOT NULL THEN t.sensor_id
+           ELSE NULL
+      END sensor_id
+    FROM pressures p
+      FULL OUTER JOIN temperatures t ON (t.date = p.date AND t.sensor_id = p.sensor_id)
+      FULL OUTER JOIN humidities h ON (h.date = p.date AND h.sensor_id = p.sensor_id)
+  ) LOOP
+
+    -- MEASURED_VALUE
+    INSERT INTO measured_values(id, sensor_id, creation_date, update_date)
+    VALUES (f.measured_value_id, f.sensor_id, NOW(), NULL)
+    ON CONFLICT (
+      id
+    )
+    DO NOTHING;
+
+    -- HUMIDITY
+    UPDATE humidities
+    SET measured_value_id=f.measured_value_id
+    WHERE id=f.humidity_id;
+
+    -- PRESSURE
+    UPDATE pressures
+    SET measured_value_id=f.measured_value_id
+    WHERE id=f.pressure_id;
+
+    -- TEMPERATURES
+    UPDATE temperatures
+    SET measured_value_id=f.measured_value_id
+    WHERE id=f.temperature_id;
+  END LOOP;
+END;
+$$;
+
+-- Delete sensor_id columns
+ALTER TABLE humidities
+DROP COLUMN sensor_id;
+
+ALTER TABLE pressures
+DROP COLUMN sensor_id;
+
+ALTER TABLE temperatures
+DROP COLUMN sensor_id;
+
+-- Add foreign keys
+ALTER TABLE humidities
+ADD CONSTRAINT fk_humidites_measured_value_id
+FOREIGN KEY (measured_value_id)
+REFERENCES measured_values(id)
+ON DELETE CASCADE
+ON UPDATE CASCADE;
+
+ALTER TABLE pressures
+ADD CONSTRAINT fk_pressures_measured_value_id
+FOREIGN KEY (measured_value_id)
+REFERENCES measured_values(id)
+ON DELETE CASCADE
+ON UPDATE CASCADE;
+
+ALTER TABLE temperatures
+ADD CONSTRAINT fk_temperatures_measured_value_id
+FOREIGN KEY (measured_value_id)
+REFERENCES measured_values(id)
+ON DELETE CASCADE
+ON UPDATE CASCADE;

pkg/repository/postgres/dml/deleteDeviceByName.sql

@@ -0,0 +1,2 @@
+DELETE FROM devices
+WHERE device_name = $1;

pkg/repository/postgres/dml/deleteSensorByName.sql

@@ -0,0 +1,2 @@
+DELETE FROM sensors
+WHERE sensor_name = $1;

pkg/repository/postgres/dml/insertOrUpdateDevice.sql

@@ -0,0 +1,14 @@
+INSERT INTO devices (
+  device_id,
+  device_name,
+  device_location,
+  creation_date,
+  update_date
+)
+VALUES ($1, $2, $3, $4, $5)
+ON CONFLICT (device_id)
+DO
+  UPDATE SET
+    device_name = EXCLUDED.device_name,
+    device_location = EXCLUDED.device_location,
+    update_date = NOW();

pkg/repository/postgres/dml/insertOrUpdateHumidity.sql

@@ -0,0 +1,16 @@
+INSERT INTO humidities (
+  id,
+  value,
+  date,
+  sensor_id,
+  creation_date,
+  update_date
+)
+VALUES ($1, $2, $3, $4, $5, $6)
+ON CONFLICT (id)
+DO
+  UPDATE SET
+    value = EXCLUDED.value,
+    date = EXCLUDED.date,
+    sensor_id = EXCLUDED.sensor_id,
+    update_date = NOW();

pkg/repository/postgres/dml/insertOrUpdatePressure.sql

@@ -0,0 +1,16 @@
+INSERT INTO pressures (
+  id,
+  value,
+  date,
+  sensor_id,
+  creation_date,
+  update_date
+)
+VALUES ($1, $2, $3, $4, $5, $6)
+ON CONFLICT (id)
+DO
+  UPDATE SET
+    value = EXCLUDED.value,
+    date = EXCLUDED.date,
+    sensor_id = EXCLUDED.sensor_id,
+    update_date = NOW();

pkg/repository/postgres/dml/insertOrUpdateSensor.sql

@@ -0,0 +1,31 @@
+INSERT INTO sensors (
+  sensor_id,
+  sensor_name,
+  sensor_location,
+  wire_id,
+  i2c_bus,
+  i2c_address,
+  gpio_number,
+  sensor_model,
+  sensor_enabled,
+  tick_duration,
+  device_id,
+  creation_date,
+  update_date
+)
+VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13)
+ON CONFLICT (sensor_id)
+DO
+  UPDATE SET
+    sensor_name = EXCLUDED.sensor_name,
+    sensor_location = EXCLUDED.sensor_location,
+    wire_id = EXCLUDED.wire_id,
+    i2c_bus = EXCLUDED.i2c_bus,
+    i2c_address = EXCLUDED.i2c_address,
+    gpio_number = EXCLUDED.gpio_number,
+    sensor_model = EXCLUDED.sensor_model,
+    sensor_enabled = EXCLUDED.sensor_enabled,
+    tick_duration = EXCLUDED.tick_duration,
+    device_id = EXCLUDED.device_id,
+    creation_date = EXCLUDED.creation_date,
+    update_date = NOW();

pkg/repository/postgres/dml/insertOrUpdateTemperature.sql

@@ -0,0 +1,16 @@
+INSERT INTO temperatures (
+  id,
+  value,
+  date,
+  sensor_id,
+  creation_date,
+  update_date
+)
+VALUES ($1, $2, $3, $4, $5, $6)
+ON CONFLICT (id)
+DO
+  UPDATE SET
+    value = EXCLUDED.value,
+    date = EXCLUDED.date,
+    sensor_id = EXCLUDED.sensor_id,
+    update_date = NOW();

pkg/repository/postgres/dml/selectDeviceByName.sql

@@ -0,0 +1,9 @@
+SELECT
+  device_id,
+  device_name,
+  device_location,
+  creation_date,
+  update_date
+FROM
+  devices
+WHERE device_name = $1;

pkg/repository/postgres/dml/selectHumidityByID.sql

@@ -8,4 +8,4 @@ SELECT
 FROM
   humidities
 WHERE
-  humidity_id = $1
+  id = $1

pkg/repository/postgres/dml/selectPressureByID.sql

@@ -8,4 +8,4 @@ SELECT
 FROM
   pressures
 WHERE
-  pressure_id = $1
+  id = $1

pkg/repository/postgres/dml/selectSensorByID.sql

@@ -0,0 +1,20 @@
+SELECT
+  sensor_id,
+  sensor_name,
+  sensor_location,
+  wire_id,
+  i2c_bus,
+  i2c_address,
+  gpio_number,
+  sensor_model,
+  sensor_enabled,
+  tick_duration,
+  device_id,
+  creation_date,
+  update_date
+FROM
+  sensors
+WHERE
+  sensor_id = $1
+ORDER BY
+  sensor_name ASC;

pkg/repository/postgres/dml/selectSensorsByDeviceID.sql

@@ -15,4 +15,4 @@ SELECT
 FROM
   sensors
 WHERE
-  sensor_id = $1;
+  device_id = $1;

pkg/repository/postgres/dml/selectSensorsByModel.sql

@@ -0,0 +1,18 @@
+SELECT
+  sensor_id,
+  sensor_name,
+  sensor_location,
+  wire_id,
+  i2c_bus,
+  i2c_address,
+  gpio_number,
+  sensor_model,
+  sensor_enabled,
+  tick_duration,
+  device_id,
+  creation_date,
+  update_date
+FROM
+  sensors
+WHERE
+  sensor_model = $1;

pkg/repository/postgres/dml/selectSensorsByName.sql

@@ -0,0 +1,18 @@
+SELECT
+  sensor_id,
+  sensor_name,
+  sensor_location,
+  wire_id,
+  i2c_bus,
+  i2c_address,
+  gpio_number,
+  sensor_model,
+  sensor_enabled,
+  tick_duration,
+  device_id,
+  creation_date,
+  update_date
+FROM
+  sensors
+WHERE
+  sensor_name = $1;

pkg/repository/postgres/dml/selectTemperatureByID.sql

@@ -8,4 +8,4 @@ SELECT
 FROM
   temperatures
 WHERE
-  temperature_id = $1
+  id = $1

pkg/repository/postgres/statements.go

@@ -0,0 +1,100 @@
+package postgres
+
+import "embed"
+
+var (
+	DDLAssetPath = "ddl"
+
+	//go:embed ddl/*.sql
+	DDLAssets embed.FS
+
+	//go:embed dml/deleteDeviceByID.sql
+	DeleteDeviceByIDSQL string
+
+	//go:embed dml/deleteDeviceByName.sql
+	DeleteDeviceByNameSQL string
+
+	//go:embed dml/deleteSensorByID.sql
+	DeleteSensorByIDSQL string
+
+	//go:embed dml/deleteSensorByName.sql
+	DeleteSensorByNameSQL string
+
+	//go:embed dml/insertDevice.sql
+	InsertDeviceSQL string
+
+	//go:embed dml/insertHumidity.sql
+	InsertHumiditySQL string
+
+	//go:embed dml/insertOrUpdateDevice.sql
+	InsertOrUpdateDeviceSQL string
+
+	//go:embed dml/insertOrUpdateHumidity.sql
+	InsertOrUpdateHumiditySQL string
+
+	//go:embed dml/insertOrUpdatePressure.sql
+	InsertOrUpdatePressureSQL string
+
+	//go:embed dml/insertOrUpdateSensor.sql
+	InsertOrUpdateSensorSQL string
+
+	//go:embed dml/insertOrUpdateTemperature.sql
+	InsertOrUpdateTemperatureSQL string
+
+	//go:embed dml/insertPressure.sql
+	InsertPressureSQL string
+
+	//go:embed dml/insertSensor.sql
+	InsertSensorSQL string
+
+	//go:embed dml/insertTemperature.sql
+	InsertTemperatureSQL string
+
+	//go:embed dml/selectDeviceByID.sql
+	SelectDeviceByIDSQL string
+
+	//go:embed dml/selectDeviceByName.sql
+	SelectDeviceByNameSQL string
+
+	//go:embed dml/selectDevices.sql
+	SelectDevicesSQL string
+
+	//go:embed dml/selectHumidities.sql
+	SelectHumiditiesSQL string
+
+	//go:embed dml/selectHumidityByID.sql
+	SelectHumidityByIDSQL string
+
+	//go:embed dml/selectPressureByID.sql
+	SelectPressureByIDSQL string
+
+	//go:embed dml/selectPressures.sql
+	SelectPressuresSQL string
+
+	//go:embed dml/selectSensorByID.sql
+	SelectSensorByIDSQL string
+
+	//go:embed dml/selectSensors.sql
+	SelectSensorsSQL string
+
+	//go:embed dml/selectSensorsByDeviceID.sql
+	SelectSensorsByDeviceIDSQL string
+
+	//go:embed dml/selectSensorsByModel.sql
+	SelectSensorsByModelSQL string
+
+	//go:embed dml/selectSensorsByName.sql
+	SelectSensorsByNameSQL string
+
+	//go:embed dml/selectTemperatureByID.sql
+	SelectTemperatureByIDSQL string
+
+	//go:embed dml/selectTemperatures.sql
+	SelectTemperaturesSQL string
+
+	//go:embed dml/updateDevice.sql
+	UpdateDeviceSQL string
+
+	//go:embed dml/updateSensor.sql
+	UpdateSensorSQL string
+)

pkg/repository/repository.go

@@ -2,195 +2,83 @@ package repository
 
 import (
 	"context"
+	"fmt"
 	"net/url"
-	"strings"
 
-	"git.cryptic.systems/volker.raschek/flucky/pkg/repository/db"
 	"git.cryptic.systems/volker.raschek/flucky/pkg/types"
 	"git.cryptic.systems/volker.raschek/go-logger"
 )
 
-// Repository represent a repository where all devices, sensors and measured
+type Repository interface {
-// values are stored.
+	AddDevices(ctx context.Context, devices ...*types.Device) error
-type Repository struct {
+	AddMeasuredValues(ctx context.Context, measuredValues ...*types.MeasuredValue) error
-	database db.Database
+	AddOrUpdateDevices(ctx context.Context, devices ...*types.Device) error
+	AddOrUpdateMeasuredValues(ctx context.Context, measuredValues ...*types.MeasuredValue) error
+	AddOrUpdateSensors(ctx context.Context, sensors ...*types.Sensor) error
+	AddSensors(ctx context.Context, sensors ...*types.Sensor) error
+	Close() error
+	GetDeviceByID(ctx context.Context, deviceID string) (*types.Device, error)
+	GetDeviceByName(ctx context.Context, name string) (*types.Device, error)
+	GetDevices(ctx context.Context) ([]*types.Device, error)
+	GetHumidities(ctx context.Context) ([]*types.MeasuredValue, error)
+	GetHumidityByID(ctx context.Context, id string) (*types.MeasuredValue, error)
+	GetPressureByID(ctx context.Context, id string) (*types.MeasuredValue, error)
+	GetPressures(ctx context.Context) ([]*types.MeasuredValue, error)
+	GetSensorByID(ctx context.Context, sensorID string) (*types.Sensor, error)
+	GetSensorsByDeviceIDs(ctx context.Context, deviceIDs ...string) ([]*types.Sensor, error)
+	GetSensorsByModels(ctx context.Context, sensorModels ...string) ([]*types.Sensor, error)
+	GetSensorsByNames(ctx context.Context, sensorModels ...string) ([]*types.Sensor, error)
+	GetSensors(ctx context.Context) ([]*types.Sensor, error)
+	GetTemperatureByID(ctx context.Context, id string) (*types.MeasuredValue, error)
+	GetTemperatures(ctx context.Context) ([]*types.MeasuredValue, error)
+	Import(ctx context.Context, src Repository) error
+	Migrate(ctx context.Context) error
+	RemoveDevicesByIDs(ctx context.Context, deviceIDs ...string) error
+	RemoveDevicesByNames(ctx context.Context, names ...string) error
+	RemoveSensorsByIDs(ctx context.Context, sensorIDs ...string) error
+	RemoveSensorsByNames(ctx context.Context, names ...string) error
+	UpdateDevices(ctx context.Context, devices ...*types.Device) error
+	UpdateSensors(ctx context.Context, sensors ...*types.Sensor) error
 }
 
-// AddDevices to the repository
+// New returns a new database backend interface
-func (repo *Repository) AddDevices(devices ...*types.Device) error {
+func New(databaseURL *url.URL, flogger logger.Logger) (Repository, error) {
-	return repo.database.InsertDevices(context.Background(), devices...)
+	switch databaseURL.Scheme {
-}
+	case "postgres":
-
+		repo, err := NewPostgres(PostgresOpts{
-// AddMeasuredValues to the repository
+			DatabaseURL: databaseURL,
-func (repo *Repository) AddMeasuredValues(measuredValues ...*types.MeasuredValue) error {
+			Logger:      flogger,
-	return repo.database.InsertMeasuredValues(context.Background(), measuredValues...)
+		})
-}
+		if err != nil {
-
+			return nil, err
-// AddSensors to the repository
-func (repo *Repository) AddSensors(sensors ...*types.Sensor) error {
-	return repo.database.InsertSensors(context.Background(), sensors...)
-}
-
-// Close closes the repository and prevents new queries from starting. Close
-// then waits for all queries that have started processing on the server to
-// finish.
-func (repo *Repository) Close() error {
-	return repo.database.Close()
-}
-
-// DisableSensorsByNames disable all sensors which match bei their name
-func (repo *Repository) DisableSensorsByNames(sensorNames ...string) error {
-	sensors, err := repo.GetSensors()
-	if err != nil {
-		return err
-	}
-
-	matchedSensors := make([]*types.Sensor, 0)
-	for _, sensor := range sensors {
-		for _, sensorName := range sensorNames {
-			if strings.Compare(sensor.Name, sensorName) == 0 {
-				sensor.Enabled = false
-				matchedSensors = append(matchedSensors, sensor)
-			}
 		}
-	}
 
-	return repo.UpdateSensors(matchedSensors...)
+		// Initialize database scheme if not exists
-}
+		err = repo.Migrate(context.Background())
-
+		if err != nil {
-// EnableSensorsByNames enable all sensors which match bei their name
+			return nil, err
-func (repo *Repository) EnableSensorsByNames(sensorNames ...string) error {
-	sensors, err := repo.GetSensors()
-	if err != nil {
-		return err
-	}
-
-	matchedSensors := make([]*types.Sensor, 0)
-	for _, sensor := range sensors {
-		for _, sensorName := range sensorNames {
-			if strings.Compare(sensor.Name, sensorName) == 0 {
-				sensor.Enabled = true
-				matchedSensors = append(matchedSensors, sensor)
-			}
 		}
-	}
 
-	return repo.UpdateSensors(matchedSensors...)
+		return repo, nil
-}
 
-// GetDevice returns a device by his id. If no device has been found, the
+	case "sqlite3":
-// function returns nil.
+		repo, err := NewSQLite(SQLiteOpts{
-func (repo *Repository) GetDevice(deviceID string) (*types.Device, error) {
+			DatabaseURL: databaseURL,
-	return repo.database.SelectDevice(context.Background(), deviceID)
+			Logger:      flogger,
-}
+		})
-
+		if err != nil {
-// GetDevices returns all devices. If no devices has been found, the function
+			return nil, err
-// returns nil.
-func (repo *Repository) GetDevices() ([]*types.Device, error) {
-	return repo.database.SelectDevices(context.Background())
-}
-
-// GetSensor returns a sensor by his id. If no sensor has been found, the
-// function returns nil.
-func (repo *Repository) GetSensor(sensorID string) (*types.Sensor, error) {
-	return repo.database.SelectSensor(context.Background(), sensorID)
-}
-
-// GetSensors returns all sensors. If no sensors has been found, the function
-// returns nil.
-func (repo *Repository) GetSensors() ([]*types.Sensor, error) {
-	return repo.database.SelectSensors(context.Background())
-}
-
-// GetSensorsByDeviceID returns all sensors by a device id. If no sensor has
-// been found by the id, the function returns nil.
-func (repo *Repository) GetSensorsByDeviceID(deviceID string) ([]*types.Sensor, error) {
-	cachedSensors := make([]*types.Sensor, 0)
-	sensors, err := repo.GetSensors()
-	if err != nil {
-		return nil, err
-	}
-
-	for _, sensor := range sensors {
-		if strings.Compare(sensor.DeviceID, deviceID) == 0 {
-			cachedSensors = append(cachedSensors, sensor)
 		}
-	}
 
-	return cachedSensors, nil
+		// Initialize database scheme if not exists
-}
+		err = repo.Migrate(context.Background())
-
+		if err != nil {
-// RemoveDevices removes devices by their ids from the repository. Additional
+			return nil, err
-// all sensors and measured values, which are in relation with the device
-// respectively the sensors will also be deleted.
-func (repo *Repository) RemoveDevices(deviceIDs ...string) error {
-	return repo.database.DeleteDevices(context.Background(), deviceIDs...)
-}
-
-// RenameSensors all sensors which match by their current name to the new name
-func (repo *Repository) RenameSensors(oldName string, newName string) error {
-	sensors, err := repo.GetSensors()
-	if err != nil {
-		return err
-	}
-
-	matchedSensors := make([]*types.Sensor, 0)
-	for _, sensor := range sensors {
-		if strings.Compare(sensor.Name, oldName) == 0 {
-			sensor.Name = newName
-			matchedSensors = append(matchedSensors, sensor)
 		}
+
+		return repo, nil
+
+	default:
+		return nil, fmt.Errorf("Unsupported repository scheme: %v", databaseURL.Scheme)
 	}
-
-	return repo.UpdateSensors(matchedSensors...)
-}
-
-// RemoveSensors removes sensors by their ids from the repository. Additional
-// all measured values, which are in relation with the sensor will also be
-// deleted.
-func (repo *Repository) RemoveSensors(sensorIDs ...string) error {
-	return repo.database.DeleteSensors(context.Background(), sensorIDs...)
-}
-
-// RemoveSensorsByNames removes all sensors which match bei their name
-func (repo *Repository) RemoveSensorsByNames(sensorNames ...string) error {
-	sensors, err := repo.GetSensors()
-	if err != nil {
-		return err
-	}
-
-	matchedSensorIDs := make([]string, 0)
-	for _, sensor := range sensors {
-		for _, sensorName := range sensorNames {
-			if strings.Compare(sensor.Name, sensorName) == 0 {
-				matchedSensorIDs = append(matchedSensorIDs, sensor.ID)
-			}
-		}
-	}
-
-	return repo.RemoveSensors(matchedSensorIDs...)
-}
-
-// UpdateDevices update devices which are stored into the repository by their
-// id. The id of the device can not be updated.
-func (repo *Repository) UpdateDevices(devices ...*types.Device) error {
-	return repo.database.UpdateDevices(context.Background(), devices...)
-}
-
-// UpdateSensors update sensors which are stored into the repository by their
-// id. The id of the sensor can not be updated.
-func (repo *Repository) UpdateSensors(sensors ...*types.Sensor) error {
-	return repo.database.UpdateSensors(context.Background(), sensors...)
-}
-
-// New returns a new repository based on the data source name (dsn)
-func New(dsnURL *url.URL, flogger logger.Logger) (*Repository, error) {
-	database, err := db.New(dsnURL, flogger)
-	if err != nil {
-		return nil, err
-	}
-
-	return &Repository{
-		database: database,
-	}, nil
 }

pkg/repository/repository_test.go

@@ -12,13 +12,15 @@ import (
 	"testing"
 	"time"
 
+	"git.cryptic.systems/volker.raschek/dockerutils"
 	"git.cryptic.systems/volker.raschek/flucky/pkg/repository"
-	"git.cryptic.systems/volker.raschek/flucky/pkg/testutils/dockerutils"
 	"git.cryptic.systems/volker.raschek/flucky/pkg/types"
 	"git.cryptic.systems/volker.raschek/go-logger"
 	uuid "github.com/satori/go.uuid"
 	"github.com/stretchr/testify/require"
 
+	_ "github.com/golang-migrate/migrate/v4/database/postgres"
+	_ "github.com/golang-migrate/migrate/v4/database/sqlite3"
 	_ "github.com/lib/pq"
 	_ "github.com/mattn/go-sqlite3"
 )
@@ -29,15 +31,13 @@ func TestPostgresBackend(t *testing.T) {
 	require.NoError(err)
 
 	rand.Seed(time.Now().Unix())
-	postgresHostPort := rand.Intn(10024-1024) + 1024
 	postgresDBPasswort := "postgres"
 	postgresContainerID, err := dockerClient.NewBuilder("postgres:13-alpine").
-		Port(fmt.Sprintf("%v:5432/tcp", postgresHostPort)).
-		Pull().
 		AddEnv("PGTZ", "Europe/Berlin").
 		AddEnv("POSTGRES_PASSWORD", postgresDBPasswort).
 		AddEnv("TZ", "Europe/Berlin").
 		Mount("/etc/localtime", "/etc/localtime").
+		Pull().
 		Start(context.Background())
 	cleanup := func() {
 		dockerClient.ContainerRemoveByIDs(context.Background(), postgresContainerID)
@@ -47,8 +47,12 @@ func TestPostgresBackend(t *testing.T) {
 
 	time.Sleep(time.Second * 10)
 
+	// inspect container to get his container ip
+	cjson, err := dockerClient.ContainerInspect(context.Background(), postgresContainerID)
+	require.NoError(err)
+
 	// postgres://[user]:[password]@[host]:[port]/[path]?[query]
-	dsnURL, err := url.Parse(fmt.Sprintf("postgres://postgres:%v@127.0.0.1:%v?sslmode=disable", postgresDBPasswort, postgresHostPort))
+	dsnURL, err := url.Parse(fmt.Sprintf("postgres://postgres:%v@%v:5432?sslmode=disable", postgresDBPasswort, cjson.NetworkSettings.IPAddress))
 	require.NoError(err)
 
 	repo, err := repository.New(dsnURL, logger.NewLogger(logger.LogLevelDebug))
@@ -73,7 +77,8 @@ func TestSQLiteBackend(t *testing.T) {
 	testBackend(t, repo)
 }
 
-func testBackend(t *testing.T, repo *repository.Repository) {
+func testBackend(t *testing.T, repo repository.Repository) {
+	ctx := context.Background()
 	require := require.New(t)
 	location := uuid.NewV4().String()
 	expectedDevices := []*types.Device{
@@ -92,33 +97,50 @@ func testBackend(t *testing.T, repo *repository.Repository) {
 	}
 
 	// Test: AddDevice
-	err := repo.AddDevices(expectedDevices...)
+	err := repo.AddDevices(ctx, expectedDevices...)
 	require.NoError(err)
 
 	// Test: GetDevices
-	devices, err := repo.GetDevices()
+	devices, err := repo.GetDevices(ctx)
 	require.NoError(err)
 	require.Len(devices, len(expectedDevices))
 	require.JSONEq(jsonEncoder(expectedDevices), jsonEncoder(devices))
 
-	// Test: GetDevice
+	// Test: GetDeviceByID
-	device, err := repo.GetDevice(expectedDevices[0].ID)
+	device, err := repo.GetDeviceByID(ctx, expectedDevices[0].ID)
 	require.NoError(err)
 	require.JSONEq(jsonEncoder(expectedDevices[0]), jsonEncoder(device))
 
-	// Test: RemoveDevice
+	// Test: GetDeviceByName
-	err = repo.RemoveDevices(expectedDevices[0].ID)
+	device, err = repo.GetDeviceByName(ctx, expectedDevices[0].Name)
+	require.NoError(err)
+	require.JSONEq(jsonEncoder(expectedDevices[0]), jsonEncoder(device))
+
+	// Test: RemoveDevicesByIDs
+	err = repo.RemoveDevicesByIDs(ctx, expectedDevices[0].ID)
 	require.NoError(err)
 
-	devices, err = repo.GetDevices()
+	devices, err = repo.GetDevices(ctx)
 	require.NoError(err)
 	require.Len(devices, 1)
 
-	device, err = repo.GetDevice(expectedDevices[0].ID)
+	device, err = repo.GetDeviceByID(ctx, expectedDevices[0].ID)
 	require.NoError(err)
 	require.Nil(device)
 
-	err = repo.AddDevices(expectedDevices[0])
+	// Test: RemoveDevicesByNames
+	err = repo.RemoveDevicesByNames(ctx, expectedDevices[0].Name)
+	require.NoError(err)
+
+	devices, err = repo.GetDevices(ctx)
+	require.NoError(err)
+	require.Len(devices, 1)
+
+	device, err = repo.GetDeviceByID(ctx, expectedDevices[0].ID)
+	require.NoError(err)
+	require.Nil(device)
+
+	err = repo.AddDevices(ctx, expectedDevices[0])
 	require.NoError(err)
 
 	// Test: Update Devices
@@ -130,12 +152,52 @@ func testBackend(t *testing.T, repo *repository.Repository) {
 		CreationDate: *timeNow(require),
 	}
 
-	err = repo.UpdateDevices(expectedDevice)
+	err = repo.UpdateDevices(ctx, expectedDevice)
 	require.NoError(err)
 
-	device, err = repo.GetDevice(expectedDevice.ID)
+	device, err = repo.GetDeviceByID(ctx, expectedDevice.ID)
 	require.NoError(err)
-	// require.JSONEq(jsonEncoder(expectedDevice), jsonEncoder(device))
+	require.NotEmpty(device)
+	require.Equal(expectedDevice.ID, device.ID)
+	require.Equal(expectedDevice.Name, device.Name)
+	require.Equal(expectedDevice.Location, device.Location)
+
+	// Test: AddOrUpdateDevices
+	location = "MySweetLocation"
+	expectedDevice = &types.Device{
+		ID:           "9d8c59a5-7927-4a7c-ad48-dbf5405ffd68",
+		Name:         "MySweetDevice",
+		Location:     &location,
+		CreationDate: *timeNow(require),
+	}
+	err = repo.AddOrUpdateDevices(ctx, expectedDevice)
+	require.NoError(err)
+
+	// time.Sleep(time.Minute * 10)
+
+	device, err = repo.GetDeviceByID(ctx, expectedDevice.ID)
+	require.NoError(err)
+	require.NotEmpty(device)
+	require.Equal(expectedDevice.ID, device.ID)
+	require.Equal(expectedDevice.Name, device.Name)
+	require.Equal(expectedDevice.Location, device.Location)
+
+	location = "MyUglyLocation"
+	expectedDevice = &types.Device{
+		ID:           "9d8c59a5-7927-4a7c-ad48-dbf5405ffd68",
+		Name:         "MyUglyDevice",
+		Location:     &location,
+		CreationDate: *timeNow(require),
+	}
+	err = repo.AddOrUpdateDevices(ctx, expectedDevice)
+	require.NoError(err)
+
+	device, err = repo.GetDeviceByID(ctx, expectedDevice.ID)
+	require.NoError(err)
+	require.NotEmpty(device)
+	require.Equal(expectedDevice.ID, device.ID)
+	require.Equal(expectedDevice.Name, device.Name)
+	require.Equal(expectedDevice.Location, device.Location)
 
 	var (
 		wireID                = "50473fdc-f6ef-4227-b3c4-484d8e9c1323"
@@ -144,7 +206,7 @@ func testBackend(t *testing.T, repo *repository.Repository) {
 		expectedSensors       = []*types.Sensor{
 			{
 				ID:           "0f8b88b0-c20d-42b2-ab51-b09ca99c0752",
-				Name:         "e1fbdbe9-cebf-42ed-8065-bf4882ccf76b",
+				Name:         "01fbdbe9-cebf-42ed-8065-bf4882ccf76b",
 				Location:     "6d5b5450-1f87-47cb-b185-f64c35fae3c1",
 				GPIONumber:   "GPIO14",
 				Model:        "DHT11",
@@ -180,77 +242,80 @@ func testBackend(t *testing.T, repo *repository.Repository) {
 	)
 
 	// Test: AddSensors
-	err = repo.AddSensors(expectedSensors...)
+	err = repo.AddSensors(ctx, expectedSensors...)
 	require.NoError(err)
 
 	// Test: GetSensors
-	sensors, err := repo.GetSensors()
+	sensors, err := repo.GetSensors(ctx)
 	require.NoError(err)
 	require.Len(sensors, len(expectedSensors))
 
-	// Test: GetSensor
+	// Test: GetSensorsByNames
-	sensor, err := repo.GetSensor(expectedSensors[0].ID)
+	sensors, err = repo.GetSensorsByNames(ctx, "01fbdbe9-cebf-42ed-8065-bf4882ccf76b")
+	require.NoError(err)
+	require.Len(sensors, 1)
+	require.JSONEq(jsonEncoder(expectedSensors[0]), jsonEncoder(sensors[0]))
+
+	// Test: GetSensorsByModels
+	sensors, err = repo.GetSensorsByModels(ctx, "BME280")
+	require.NoError(err)
+	require.Len(sensors, 1)
+	require.JSONEq(jsonEncoder(expectedSensors[2]), jsonEncoder(sensors[0]))
+
+	sensors, err = repo.GetSensorsByModels(ctx, "DS18B20")
+	require.NoError(err)
+	require.Len(sensors, 1)
+	require.JSONEq(jsonEncoder(expectedSensors[1]), jsonEncoder(sensors[0]))
+
+	sensors, err = repo.GetSensorsByModels(ctx, "DHT11")
+	require.NoError(err)
+	require.Len(sensors, 1)
+	require.JSONEq(jsonEncoder(expectedSensors[0]), jsonEncoder(sensors[0]))
+
+	sensors, err = repo.GetSensorsByModels(ctx, "DHT11", "DS18B20")
+	require.NoError(err)
+	require.Len(sensors, 2)
+	require.JSONEq(jsonEncoder(expectedSensors[0:2]), jsonEncoder(sensors[0:2]))
+
+	// Test: GetSensorByID
+	sensor, err := repo.GetSensorByID(ctx, expectedSensors[0].ID)
 	require.NoError(err)
 	require.JSONEq(jsonEncoder(expectedSensors[0]), jsonEncoder(sensor))
 
 	// Test: GetSensorsByDeviceID
-	sensors, err = repo.GetSensorsByDeviceID("ec0be3ab-d26d-4f9b-a96e-23ae5c577f8f")
+	sensors, err = repo.GetSensorsByDeviceIDs(ctx, "ec0be3ab-d26d-4f9b-a96e-23ae5c577f8f")
 	require.NoError(err)
 	require.Len(sensors, 2)
 	require.JSONEq(jsonEncoder(expectedSensors[0:2]), jsonEncoder(sensors))
 
-	// Test: RemoveSensors
+	// Test: RemoveSensorsByIDs
-	err = repo.RemoveSensors(expectedSensors[0].ID)
+	err = repo.RemoveSensorsByIDs(ctx, expectedSensors[0].ID)
 	require.NoError(err)
 
-	sensors, err = repo.GetSensors()
+	sensors, err = repo.GetSensors(ctx)
 	require.NoError(err)
 	require.Len(sensors, 2)
 
-	sensors, err = repo.GetSensorsByDeviceID("ec0be3ab-d26d-4f9b-a96e-23ae5c577f8f")
+	sensors, err = repo.GetSensorsByDeviceIDs(ctx, "ec0be3ab-d26d-4f9b-a96e-23ae5c577f8f")
 	require.NoError(err)
 	require.Len(sensors, 1)
 
-	sensor, err = repo.GetSensor(expectedSensors[0].ID)
+	sensor, err = repo.GetSensorByID(ctx, expectedSensors[0].ID)
 	require.NoError(err)
 	require.Nil(sensor)
 
 	// Test: RemoveSensorsByNames
-	err = repo.RemoveSensorsByNames(expectedSensors[1].Name)
+	err = repo.RemoveSensorsByNames(ctx, expectedSensors[1].Name)
 	require.NoError(err)
 
-	sensors, err = repo.GetSensors()
+	sensors, err = repo.GetSensors(ctx)
 	require.NoError(err)
 	require.Len(sensors, 1)
 
-	sensor, err = repo.GetSensor(expectedSensors[1].ID)
+	sensor, err = repo.GetSensorByID(ctx, expectedSensors[1].ID)
 	require.NoError(err)
 	require.Nil(sensor)
 
-	// Test: RenameSensor
-	err = repo.RenameSensors(expectedSensors[2].Name, "Hello")
-	require.NoError(err)
-
-	sensor, err = repo.GetSensor(expectedSensors[2].ID)
-	require.Equal("Hello", sensor.Name)
-	require.NotNil(sensor)
-
-	// Test: DisableSensorsByNames
-	err = repo.DisableSensorsByNames("Hello")
-	require.NoError(err)
-
-	sensor, err = repo.GetSensor(expectedSensors[2].ID)
-	require.False(sensor.Enabled)
-	require.NotNil(sensor)
-
-	// Test: EnableSensorsByName
-	err = repo.EnableSensorsByNames("Hello")
-	require.NoError(err)
-
-	sensor, err = repo.GetSensor(expectedSensors[2].ID)
-	require.True(sensor.Enabled)
-	require.NotNil(sensor)
-
 	// Test: UpdateSensors
 	expectedSensor := &types.Sensor{
 		ID:           "8c74397f-8e60-4c9d-960d-3197747cef9a",
@@ -265,20 +330,79 @@ func testBackend(t *testing.T, repo *repository.Repository) {
 		CreationDate: *timeNow(require),
 	}
 
-	err = repo.UpdateSensors(expectedSensor)
+	err = repo.UpdateSensors(ctx, expectedSensor)
 	require.NoError(err)
 
-	sensor, err = repo.GetSensor(expectedSensor.ID)
+	sensor, err = repo.GetSensorByID(ctx, expectedSensor.ID)
 	require.NoError(err)
 	require.NotNil(sensor)
 	// require.JSONEq(jsonEncoder(expectedSensor), jsonEncoder(sensor))
 
+	// Test: AddOrUpdateSensors
+	expectedSensor = &types.Sensor{
+		ID:           "9bba0e0a-e996-4242-966f-db21bab6752f",
+		Name:         "b4ac3d0f-cef6-4e93-bd7b-e821ae5ab593",
+		Location:     "HelloWorld",
+		I2CBus:       nil,
+		I2CAddress:   nil,
+		Model:        "SDS011",
+		Enabled:      true,
+		TickDuration: "6h",
+		DeviceID:     "39b8f150-8abf-4539-9f16-7f68cedb1649",
+		CreationDate: *timeNow(require),
+	}
+
+	err = repo.AddOrUpdateSensors(ctx, expectedSensor)
+	require.NoError(err)
+
+	sensor, err = repo.GetSensorByID(ctx, expectedSensor.ID)
+	require.NoError(err)
+	require.NotEmpty(sensor)
+	require.Equal(expectedSensor.ID, sensor.ID)
+	require.Equal(expectedSensor.Name, sensor.Name)
+	require.Equal(expectedSensor.Location, sensor.Location)
+	require.Equal(expectedSensor.I2CBus, sensor.I2CBus)
+	require.Equal(expectedSensor.I2CAddress, sensor.I2CAddress)
+	require.Equal(expectedSensor.Model, sensor.Model)
+	require.Equal(expectedSensor.Enabled, sensor.Enabled)
+	require.Equal(expectedSensor.TickDuration, sensor.TickDuration)
+	require.Equal(expectedSensor.DeviceID, sensor.DeviceID)
+
+	expectedSensor = &types.Sensor{
+		ID:           "9bba0e0a-e996-4242-966f-db21bab6752f",
+		Name:         "MySweetSensor",
+		Location:     "MySweetLocation",
+		I2CBus:       nil,
+		I2CAddress:   nil,
+		Model:        "Jap",
+		Enabled:      false,
+		TickDuration: "8h",
+		DeviceID:     "39b8f150-8abf-4539-9f16-7f68cedb1649",
+		CreationDate: *timeNow(require),
+	}
+
+	err = repo.AddOrUpdateSensors(ctx, expectedSensor)
+	require.NoError(err)
+
+	sensor, err = repo.GetSensorByID(ctx, expectedSensor.ID)
+	require.NoError(err)
+	require.NotEmpty(sensor)
+	require.Equal(expectedSensor.ID, sensor.ID)
+	require.Equal(expectedSensor.Name, sensor.Name)
+	require.Equal(expectedSensor.Location, sensor.Location)
+	require.Equal(expectedSensor.I2CBus, sensor.I2CBus)
+	require.Equal(expectedSensor.I2CAddress, sensor.I2CAddress)
+	require.Equal(expectedSensor.Model, sensor.Model)
+	require.Equal(expectedSensor.Enabled, sensor.Enabled)
+	require.Equal(expectedSensor.TickDuration, sensor.TickDuration)
+	require.Equal(expectedSensor.DeviceID, sensor.DeviceID)
+
 	var (
 		expectedMeasuredValues = []*types.MeasuredValue{
 			{
 				ID:           "2e5a297a-3da0-46ae-89d2-0fcab0f1d5f7",
 				Value:        32,
-				ValueType:    "humidity",
+				ValueType:    types.Humidity,
 				Date:         *timeNow(require),
 				SensorID:     "8c74397f-8e60-4c9d-960d-3197747cef9a",
 				CreationDate: *timeNow(require),
@@ -287,7 +411,7 @@ func testBackend(t *testing.T, repo *repository.Repository) {
 			{
 				ID:           "d69f1b62-0c6c-4058-b42c-4a2821bd220c",
 				Value:        38,
-				ValueType:    "pressure",
+				ValueType:    types.Pressure,
 				Date:         *timeNow(require),
 				SensorID:     "8c74397f-8e60-4c9d-960d-3197747cef9a",
 				CreationDate: *timeNow(require),
@@ -296,7 +420,7 @@ func testBackend(t *testing.T, repo *repository.Repository) {
 			{
 				ID:           "ea945ae0-412b-4561-a191-1f8f1f909fa4",
 				Value:        35.4,
-				ValueType:    "temperature",
+				ValueType:    types.Temperature,
 				Date:         *timeNow(require),
 				SensorID:     "8c74397f-8e60-4c9d-960d-3197747cef9a",
 				CreationDate: *timeNow(require),
@@ -306,8 +430,99 @@ func testBackend(t *testing.T, repo *repository.Repository) {
 	)
 
 	// Test: AddMeasuredValues
-	err = repo.AddMeasuredValues(expectedMeasuredValues...)
+	err = repo.AddMeasuredValues(ctx, expectedMeasuredValues...)
 	require.NoError(err)
+
+	for i := range expectedMeasuredValues {
+
+		var (
+			err           error
+			measuredValue *types.MeasuredValue
+		)
+
+		switch expectedMeasuredValues[i].ValueType {
+		case types.Humidity:
+			measuredValue, err = repo.GetHumidityByID(ctx, expectedMeasuredValues[i].ID)
+			require.NoError(err)
+			require.NotNil(measuredValue)
+		case types.Pressure:
+			measuredValue, err = repo.GetPressureByID(ctx, expectedMeasuredValues[i].ID)
+			require.NoError(err)
+			require.NotNil(measuredValue)
+		case types.Temperature:
+			measuredValue, err = repo.GetTemperatureByID(ctx, expectedMeasuredValues[i].ID)
+			require.NoError(err)
+			require.NotNil(measuredValue)
+		}
+
+		require.Equal(expectedMeasuredValues[i].ID, measuredValue.ID)
+		require.Equal(expectedMeasuredValues[i].Value, measuredValue.Value)
+		require.Equal(expectedMeasuredValues[i].ValueType, measuredValue.ValueType)
+		require.Equal(expectedMeasuredValues[i].SensorID, measuredValue.SensorID)
+	}
+
+	// Test: AddOrUpdateMeasuredValues
+	expectedMeasuredValues = []*types.MeasuredValue{
+		{
+			ID:           "2e5a297a-3da0-46ae-89d2-0fcab0f1d5f7",
+			Value:        35,
+			ValueType:    types.Humidity,
+			Date:         *timeNow(require),
+			SensorID:     "8c74397f-8e60-4c9d-960d-3197747cef9a",
+			CreationDate: *timeNow(require),
+			UpdateDate:   timeNow(require),
+		},
+		{
+			ID:           "d69f1b62-0c6c-4058-b42c-4a2821bd220c",
+			Value:        37,
+			ValueType:    types.Pressure,
+			Date:         *timeNow(require),
+			SensorID:     "8c74397f-8e60-4c9d-960d-3197747cef9a",
+			CreationDate: *timeNow(require),
+			UpdateDate:   timeNow(require),
+		},
+		{
+			ID:           "ea945ae0-412b-4561-a191-1f8f1f909fa4",
+			Value:        35.4,
+			ValueType:    types.Temperature,
+			Date:         *timeNow(require),
+			SensorID:     "8c74397f-8e60-4c9d-960d-3197747cef9a",
+			CreationDate: *timeNow(require),
+			UpdateDate:   timeNow(require),
+		},
+	}
+
+	err = repo.AddOrUpdateMeasuredValues(ctx, expectedMeasuredValues...)
+	require.NoError(err)
+
+	for i := range expectedMeasuredValues {
+
+		var (
+			err           error
+			measuredValue *types.MeasuredValue
+		)
+
+		switch expectedMeasuredValues[i].ValueType {
+		case types.Humidity:
+			measuredValue, err = repo.GetHumidityByID(ctx, expectedMeasuredValues[i].ID)
+			require.NoError(err)
+			require.NotNil(measuredValue)
+		case types.Pressure:
+			measuredValue, err = repo.GetPressureByID(ctx, expectedMeasuredValues[i].ID)
+			require.NoError(err)
+			require.NotNil(measuredValue)
+		case types.Temperature:
+			measuredValue, err = repo.GetTemperatureByID(ctx, expectedMeasuredValues[i].ID)
+			require.NoError(err)
+			require.NotNil(measuredValue)
+		}
+
+		require.Equal(expectedMeasuredValues[i].ID, measuredValue.ID)
+		require.Equal(expectedMeasuredValues[i].Value, measuredValue.Value)
+		require.Equal(expectedMeasuredValues[i].ValueType, measuredValue.ValueType)
+		require.Equal(expectedMeasuredValues[i].SensorID, measuredValue.SensorID)
+	}
+
 }
 
 func jsonEncoder(v interface{}) string {
@@ -320,7 +535,7 @@ func jsonEncoder(v interface{}) string {
 }
 
 func timeNow(require *require.Assertions) *time.Time {
-	now, err := time.Parse("2006-01-02 15:04:05.999999Z", time.Now().Format("2006-01-02 15:04:05.999999Z"))
+	now, err := time.Parse("2006-01-02 15:04:05.999999-07", time.Now().Format("2006-01-02 15:04:05.999999-07"))
 	require.NoError(err)
 	return &now
 }

pkg/repository/sqlite3/ddl/1_table_devices.down.sql

@@ -0,0 +1 @@
+DROP TABLE devices;

pkg/repository/sqlite3/ddl/1_table_devices.up.sql

@@ -0,0 +1,8 @@
+CREATE TABLE devices (
+  device_id               CHAR(36)                                                    NOT NULL,
+  device_name             VARCHAR(64)                                                 NOT NULL,
+  device_location         VARCHAR(64),
+  creation_date           TIMESTAMP         DEFAULT (datetime('now', 'localtime'))    NOT NULL,
+  update_date             TIMESTAMP,
+  CONSTRAINT pk_devices PRIMARY KEY (device_id)
+);

pkg/repository/sqlite3/ddl/2_table_sensors.down.sql

@@ -0,0 +1 @@
+DROP TABLE sensors;

pkg/repository/sqlite3/ddl/2_table_sensors.up.sql

@@ -1,16 +1,17 @@
-CREATE TABLE IF NOT EXISTS sensors (
+CREATE TABLE sensors (
-  sensor_id               CHAR(36)                                    PRIMARY KEY,
+  sensor_id               CHAR(36)                                                    NOT NULL,
-  sensor_name             VARCHAR(64)                                 NOT NULL,
+  sensor_name             VARCHAR(64)                                                 NOT NULL,
   sensor_location         VARCHAR(64),
   wire_id                 VARCHAR(64),
   i2c_bus                 VARCHAR(255),
   i2c_address             VARCHAR(12),
   gpio_number             VARCHAR(6),
-  sensor_model            VARCHAR(16)                                 NOT NULL,
+  sensor_model            VARCHAR(16)                                                 NOT NULL,
-  sensor_enabled          INTEGER(1)      DEFAULT 1                   NOT NULL,
+  sensor_enabled          INTEGER(1)      DEFAULT 1                                   NOT NULL,
-  tick_duration           VARCHAR(6)                                  NOT NULL,
+  tick_duration           VARCHAR(6)                                                  NOT NULL,
-  device_id               CHAR(36)                                    NOT NULL,
+  device_id               CHAR(36)                                                    NOT NULL,
-  creation_date           TIMESTAMP       DEFAULT CURRENT_TIMESTAMP,
+  creation_date           TIMESTAMP       DEFAULT (datetime('now', 'localtime'))      NOT NULL,
   update_date             TIMESTAMP,
-  FOREIGN KEY(device_id) REFERENCES devices(device_id)
+  CONSTRAINT pk_sensors PRIMARY KEY(sensor_id),
+  CONSTRAINT fk_sensors_device_id FOREIGN KEY(device_id) REFERENCES devices(device_id) ON DELETE CASCADE ON UPDATE CASCADE
 );

pkg/repository/sqlite3/ddl/3_table_humidities.down.sql

@@ -0,0 +1 @@
+DROP TABLE humidities;

pkg/repository/sqlite3/ddl/3_table_humidities.up.sql

@@ -0,0 +1,10 @@
+CREATE TABLE humidities (
+  id                      CHAR(36)                                                  NOT NULL,
+  value                   NUMERIC(10,3)                                             NOT NULL,
+  date                    TIMESTAMP                                                 NOT NULL,
+  sensor_id               CHAR(36)                                                  NOT NULL,
+  creation_date           TIMESTAMP       DEFAULT (datetime('now', 'localtime'))    NOT NULL,
+  update_date             TIMESTAMP,
+  CONSTRAINT pk_humidities PRIMARY KEY(id),
+  CONSTRAINT fk_humidities_sensor_id FOREIGN KEY(sensor_id) REFERENCES sensors(sensor_id) ON DELETE CASCADE ON UPDATE CASCADE
+);

pkg/repository/sqlite3/ddl/4_table_pressures.down.sql

@@ -0,0 +1 @@
+DROP TABLE humidities;

pkg/repository/sqlite3/ddl/4_table_pressures.up.sql

@@ -0,0 +1,10 @@
+CREATE TABLE pressures (
+  id                      CHAR(36)                                                  NOT NULL,
+  value                   NUMERIC(10,3)                                             NOT NULL,
+  date                    TIMESTAMP                                                 NOT NULL,
+  sensor_id               CHAR(36)                                                  NOT NULL,
+  creation_date           TIMESTAMP       DEFAULT (datetime('now', 'localtime'))    NOT NULL,
+  update_date             TIMESTAMP,
+  CONSTRAINT pk_pressures PRIMARY KEY(id),
+  CONSTRAINT fk_pressures_sensor_id FOREIGN KEY(sensor_id) REFERENCES sensors(sensor_id) ON DELETE CASCADE ON UPDATE CASCADE
+);

pkg/repository/sqlite3/ddl/5_table_temperatures.down.sql

@@ -0,0 +1 @@
+DROP TABLE temperatures;

pkg/repository/sqlite3/ddl/5_table_temperatures.up.sql

@@ -0,0 +1,10 @@
+CREATE TABLE temperatures (
+  id                      CHAR(36)                                                  NOT NULL,
+  value                   NUMERIC(10,3)                                             NOT NULL,
+  date                    TIMESTAMP                                                 NOT NULL,
+  sensor_id               CHAR(36)                                                  NOT NULL,
+  creation_date           TIMESTAMP       DEFAULT (datetime('now', 'localtime'))    NOT NULL,
+  update_date             TIMESTAMP,
+  CONSTRAINT pk_temperatures PRIMARY KEY(id),
+  CONSTRAINT fk_temperatures_id FOREIGN KEY(sensor_id) REFERENCES sensors(sensor_id) ON DELETE CASCADE ON UPDATE CASCADE
+);

pkg/repository/sqlite3/ddl/6_table_measured_values.down.sql

@@ -0,0 +1,90 @@
+-- All tables with the original data rows must be renamed, because it is not
+-- possible to remove existing foreign keys. The tables will be recreated with
+-- a new column measured_value_id which reference on the primary key of the
+-- table measured values.
+--
+-- More about why it is not possible to delete a foreign key is described here:
+-- https://stackoverflow.com/a/1884893/7652996
+ALTER TABLE humidities
+RENAME TO humidities_backup;
+
+CREATE TABLE humidities (
+  id                      CHAR(36)                                                  NOT NULL,
+  value                   NUMERIC(10,3)                                             NOT NULL,
+  date                    TIMESTAMP                                                 NOT NULL,
+  sensor_id               CHAR(36)                                                  NOT NULL,
+  creation_date           TIMESTAMP       DEFAULT (datetime('now', 'localtime'))    NOT NULL,
+  update_date             TIMESTAMP,
+  CONSTRAINT pk_humidities PRIMARY KEY(id),
+  CONSTRAINT fk_humidities_sensor_id FOREIGN KEY(sensor_id) REFERENCES sensors(sensor_id) ON DELETE CASCADE ON UPDATE CASCADE
+);
+
+ALTER TABLE pressures
+RENAME TO pressures_backup;
+
+CREATE TABLE pressures (
+  id                      CHAR(36)                                                  NOT NULL,
+  value                   NUMERIC(10,3)                                             NOT NULL,
+  date                    TIMESTAMP                                                 NOT NULL,
+  sensor_id               CHAR(36)                                                  NOT NULL,
+  creation_date           TIMESTAMP       DEFAULT (datetime('now', 'localtime'))    NOT NULL,
+  update_date             TIMESTAMP,
+  CONSTRAINT pk_pressures PRIMARY KEY(id),
+  CONSTRAINT fk_pressures_sensor_id FOREIGN KEY(sensor_id) REFERENCES sensors(sensor_id) ON DELETE CASCADE ON UPDATE CASCADE
+);
+
+ALTER TABLE temperatures
+RENAME TO temperatures_backup;
+
+CREATE TABLE temperatures (
+  id                      CHAR(36)                                                  NOT NULL,
+  value                   NUMERIC(10,3)                                             NOT NULL,
+  date                    TIMESTAMP                                                 NOT NULL,
+  sensor_id               CHAR(36)                                                  NOT NULL,
+  creation_date           TIMESTAMP       DEFAULT (datetime('now', 'localtime'))    NOT NULL,
+  update_date             TIMESTAMP,
+  CONSTRAINT pk_temperatures PRIMARY KEY(id),
+  CONSTRAINT fk_temperatures_id FOREIGN KEY(sensor_id) REFERENCES sensors(sensor_id) ON DELETE CASCADE ON UPDATE CASCADE
+);
+
+-- Filling tables humidities, pressures and temperatures with the data from the
+-- backup table.
+INSERT INTO humidities
+SELECT
+  h.id,
+  h.value,
+  h.date,
+  m.sensor_id,
+  h.creation_date,
+  h.update_date
+FROM humidities_backup h
+  INNER JOIN measured_values m ON (m.id = h.measured_value_id);
+
+INSERT INTO pressures
+SELECT
+  p.id,
+  p.value,
+  p.date,
+  m.sensor_id,
+  p.creation_date,
+  p.update_date
+FROM pressures_backup p
+  INNER JOIN measured_values m ON (m.id = p.measured_value_id);
+
+INSERT INTO temperatures
+SELECT
+  t.id,
+  t.value,
+  t.date,
+  m.sensor_id,
+  t.creation_date,
+  t.update_date
+FROM temperatures_backup t
+  INNER JOIN measured_values m ON (m.id = t.measured_value_id);
+
+-- The remaining tables, which were only necessary for the migration,
+-- are now removed.
+DROP TABLE humidities_backup;
+DROP TABLE pressures_backup;
+DROP TABLE temperatures_backup;
+DROP TABLE measured_values;

pkg/repository/sqlite3/ddl/6_table_measured_values.up.sql

@@ -0,0 +1,189 @@
+-- Create measures_values table.
+-- This table represent a collection of different measured values, because it
+-- can be possible, that a sensor returns multiple measured values. For example
+-- the BME280 semsor returns humidity, pressure and temperature values.
+CREATE TABLE measured_values (
+  id                      CHAR(36)                                                NOT NULL,
+  sensor_id               CHAR(36)                                                NOT NULL,
+  creation_date           TIMESTAMP WITH TIME ZONE    DEFAULT CURRENT_TIMESTAMP   NOT NULL,
+  update_date             TIMESTAMP WITH TIME ZONE,
+  CONSTRAINT pk_measured_value PRIMARY KEY(id),
+  CONSTRAINT pk_measured_value_sensor_id FOREIGN KEY(sensor_id) REFERENCES sensors(sensor_id) ON DELETE CASCADE ON UPDATE CASCADE
+);
+
+-- All tables with the original data rows must be renamed, because it is not
+-- possible to remove existing foreign keys. The tables will be recreated with
+-- a new column measured_value_id which reference on the primary key of the
+-- table measured values.
+--
+-- More about why it is not possible to delete a foreign key is described here:
+-- https://stackoverflow.com/a/1884893/7652996
+ALTER TABLE humidities
+RENAME TO humidities_backup;
+
+CREATE TABLE humidities (
+  id                      CHAR(36)                                                  NOT NULL,
+  value                   NUMERIC(10,3)                                             NOT NULL,
+  date                    TIMESTAMP                                                 NOT NULL,
+  measured_value_id       CHAR(36)                                                  NOT NULL,
+  creation_date           TIMESTAMP       DEFAULT (datetime('now', 'localtime'))    NOT NULL,
+  update_date             TIMESTAMP,
+  CONSTRAINT pk_humidities PRIMARY KEY(id),
+  CONSTRAINT fk_humidities_measured_value_id FOREIGN KEY(measured_value_id) REFERENCES measured_values(id) ON DELETE CASCADE ON UPDATE CASCADE
+);
+
+ALTER TABLE pressures
+RENAME TO pressures_backup;
+
+CREATE TABLE pressures (
+  id                      CHAR(36)                                                  NOT NULL,
+  value                   NUMERIC(10,3)                                             NOT NULL,
+  date                    TIMESTAMP                                                 NOT NULL,
+  measured_value_id       CHAR(36)                                                  NOT NULL,
+  creation_date           TIMESTAMP       DEFAULT (datetime('now', 'localtime'))    NOT NULL,
+  update_date             TIMESTAMP,
+  CONSTRAINT pk_pressures PRIMARY KEY(id),
+  CONSTRAINT fk_pressures_measured_value_id FOREIGN KEY(measured_value_id) REFERENCES measured_values(id) ON DELETE CASCADE ON UPDATE CASCADE
+);
+
+ALTER TABLE temperatures
+RENAME TO temperatures_backup;
+
+CREATE TABLE temperatures (
+  id                      CHAR(36)                                                  NOT NULL,
+  value                   NUMERIC(10,3)                                             NOT NULL,
+  date                    TIMESTAMP                                                 NOT NULL,
+  measured_value_id       CHAR(36)                                                  NOT NULL,
+  creation_date           TIMESTAMP       DEFAULT (datetime('now', 'localtime'))    NOT NULL,
+  update_date             TIMESTAMP,
+  CONSTRAINT pk_temperatures PRIMARY KEY(id),
+  CONSTRAINT fk_temperatures_measured_value_id FOREIGN KEY(measured_value_id) REFERENCES measured_values(id) ON DELETE CASCADE ON UPDATE CASCADE
+);
+
+-- The following two views are necessary to create a FULL OUTER JOIN via the
+-- tables humidities, pressures and temperatures, as this is not supported in
+-- SQLite. More about this here:
+--
+-- https://stackoverflow.com/questions/12759087/full-outer-join-in-sqlite-on-4-tables
+CREATE VIEW humidities_pressures AS
+SELECT
+  h.id AS humidity_id,
+  h.value AS humidity_value,
+  h.date AS humidity_date,
+  h.sensor_id AS humidity_sensor_id,
+  h.creation_date AS humidity_creation_date,
+  h.update_date AS humidity_update_date,
+  p.id AS pressure_id,
+  p.value AS pressure_value,
+  p.date AS pressure_date,
+  p.sensor_id AS pressure_sensor_id,
+  p.creation_date AS pressure_creation_date,
+  p.update_date AS pressure_update_date
+FROM humidities_backup h
+  LEFT JOIN pressures_backup p ON (h.date = p.date AND h.sensor_id = p.sensor_id)
+UNION ALL
+SELECT
+  h.id AS humidity_id,
+  h.value AS humidity_value,
+  h.date AS humidity_date,
+  h.sensor_id AS humidity_sensor_id,
+  h.creation_date AS humidity_creation_date,
+  h.update_date AS humidity_update_date,
+  p.id AS pressure_id,
+  p.value AS pressure_value,
+  p.date AS pressure_date,
+  p.sensor_id AS pressure_sensor_id,
+  p.creation_date AS pressure_creation_date,
+  p.update_date AS pressure_update_date
+FROM pressures_backup p
+  LEFT JOIN humidities_backup h ON (p.date = h.date AND p.sensor_id = h.sensor_id)
+WHERE h.date IS NULL
+AND h.sensor_id IS NULL;
+
+CREATE VIEW joined_values AS
+SELECT
+  hp.*,
+  t.id AS temperature_id,
+  t.value AS temperature_value,
+  t.date AS temperature_date,
+  t.sensor_id AS temperature_sensor_id,
+  t.creation_date AS temperature_creation_date,
+  t.update_date AS temperature_update_date
+FROM temperatures_backup t
+  LEFT JOIN humidities_pressures hp ON (t.date = hp.pressure_date AND t.sensor_id = hp.pressure_sensor_id)
+UNION ALL
+SELECT
+  hp.*,
+  t.id AS temperature_id,
+  t.value AS temperature_value,
+  t.date AS temperature_date,
+  t.sensor_id AS temperature_sensor_id,
+  t.creation_date AS temperature_creation_date,
+  t.update_date AS temperature_update_date
+FROM humidities_pressures hp
+  LEFT JOIN temperatures_backup t ON (t.date = hp.pressure_date  AND t.sensor_id = hp.pressure_sensor_id)
+WHERE t.date IS NULL
+AND t.sensor_id IS NULL;
+
+-- The date and the SensorID are used as primary key between the tables
+-- humidities, pressures and temperatures. Based on this information, a
+-- MeasuredValueID is generated. The data records are then inserted into the
+-- table.
+INSERT INTO measured_values (id, creation_date, sensor_id)
+SELECT
+  LOWER(HEX(RANDOMBLOB(4)) || '-' || HEX(RANDOMBLOB(2)) || '-' || '4' || SUBSTR(HEX(RANDOMBLOB(2)), 2) || '-' || SUBSTR('AB89', 1 + (ABS(random()) % 4) , 1) || SUBSTR(HEX(RANDOMBLOB(2)), 2) || '-' || HEX(RANDOMBLOB(6))) AS measured_value_id,
+  CASE WHEN humidity_date IS NOT NULL THEN humidity_date
+    WHEN pressure_date IS NOT NULL THEN pressure_date
+    WHEN temperature_date IS NOT NULL THEN temperature_date
+    ELSE NULL
+  END date,
+	CASE WHEN humidity_sensor_id IS NOT NULL THEN humidity_sensor_id
+      WHEN pressure_sensor_id IS NOT NULL THEN pressure_sensor_id
+      WHEN temperature_sensor_id IS NOT NULL THEN temperature_sensor_id
+      ELSE NULL
+  END sensor_id
+FROM joined_values;
+
+-- In the following, the original data records from the backup are restored with
+-- the difference that the MeasuredValueID is added as a foreign key based on
+-- the date and the SensorID.
+INSERT INTO humidities (id, value, date, measured_value_id, creation_date, update_date)
+SELECT
+	jv.humidity_id,
+	jv.humidity_value,
+	jv.humidity_date,
+	(SELECT mv.id FROM measured_values mv WHERE mv.creation_date = jv.humidity_date AND mv.sensor_id = jv.humidity_sensor_id) AS measured_value,
+  jv.humidity_creation_date,
+  jv.humidity_update_date
+FROM joined_values jv
+WHERE humidity_id IS NOT NULL;
+
+INSERT INTO pressures (id, value, date, measured_value_id, creation_date, update_date)
+SELECT
+	jv.pressure_id,
+	jv.pressure_value,
+	jv.pressure_date,
+	(SELECT mv.id FROM measured_values mv WHERE mv.creation_date = jv.pressure_date AND mv.sensor_id = jv.pressure_sensor_id) AS measured_value,
+  jv.pressure_creation_date,
+  jv.pressure_update_date
+FROM joined_values jv
+WHERE pressure_id IS NOT NULL;
+
+INSERT INTO temperatures (id, value, date, measured_value_id, creation_date, update_date)
+SELECT
+	jv.temperature_id,
+	jv.temperature_value,
+	jv.temperature_date,
+	(SELECT mv.id FROM measured_values mv WHERE mv.creation_date = jv.temperature_date AND mv.sensor_id = jv.temperature_sensor_id) AS measured_value,
+  jv.temperature_creation_date,
+  jv.temperature_update_date
+FROM joined_values jv
+WHERE temperature_id IS NOT NULL;
+
+-- The remaining views and tables, which were only necessary for the migration,
+-- are now removed.
+DROP VIEW humidities_pressures;
+DROP VIEW joined_values;
+DROP TABLE humidities_backup;
+DROP TABLE pressures_backup;
+DROP TABLE temperatures_backup;

pkg/repository/sqlite3/dml/deleteDeviceByName.sql

@@ -0,0 +1,2 @@
+DELETE FROM devices
+WHERE device_name = $1;

pkg/repository/sqlite3/dml/deleteSensorByName.sql

@@ -0,0 +1,2 @@
+DELETE FROM sensors
+WHERE sensor_name = $1;