fix: implement repository pkg

Makefile

@@ -105,7 +105,7 @@ all: ${EXECUTABLE_TARGETS}
 
 # darwin os
 bin/darwin/386/${EXECUTABLE}: bindata
-	CGO_ENABLED=0 \
+	CGO_ENABLED=1 \
 	GOOS=darwin \
 	GOARCH=386 \
 	GOPROXY=${GOPROXY} \
@@ -113,7 +113,7 @@ bin/darwin/386/${EXECUTABLE}: bindata
 		go build -ldflags "-X main.version=${VERSION:v%=%}" -o ${@}
 
 bin/darwin/amd64/${EXECUTABLE}: bindata
-	CGO_ENABLED=0 \
+	CGO_ENABLED=1 \
 	GOOS=darwin \
 	GOARCH=amd64 \
 	GOPROXY=${GOPROXY} \
@@ -122,7 +122,7 @@ bin/darwin/amd64/${EXECUTABLE}: bindata
 
 # freebsd os
 bin/freebsd/amd64/${EXECUTABLE}: bindata
-	CGO_ENABLED=0 \
+	CGO_ENABLED=1 \
 	GOOS=freebsd \
 	GOARCH=amd64 \
 	GOPROXY=${GOPROXY} \
@@ -131,7 +131,7 @@ bin/freebsd/amd64/${EXECUTABLE}: bindata
 
 # linux os
 bin/linux/386/${EXECUTABLE}: bindata
-	CGO_ENABLED=0 \
+	CGO_ENABLED=1 \
 	GOOS=linux \
 	GOARCH=386 \
 	GOPROXY=${GOPROXY} \
@@ -139,7 +139,7 @@ bin/linux/386/${EXECUTABLE}: bindata
 		go build -ldflags "-X main.version=${VERSION:v%=%}" -o ${@}
 
 bin/linux/amd64/${EXECUTABLE}: bindata
-	CGO_ENABLED=0 \
+	CGO_ENABLED=1 \
 	GOOS=linux \
 	GOARCH=amd64 \
 	GOPROXY=${GOPROXY} \
@@ -147,7 +147,7 @@ bin/linux/amd64/${EXECUTABLE}: bindata
 		go build -ldflags "-X main.version=${VERSION:v%=%}" -o ${@}
 
 bin/linux/arm/5/${EXECUTABLE}: bindata
-	CGO_ENABLED=0 \
+	CGO_ENABLED=1 \
 	GOOS=linux \
 	GOARCH=arm \
 	GOARM=5 \
@@ -156,7 +156,7 @@ bin/linux/arm/5/${EXECUTABLE}: bindata
 		go build -ldflags "-X main.version=${VERSION:v%=%}" -o ${@}
 
 bin/linux/arm/7/${EXECUTABLE}: bindata
-	CGO_ENABLED=0 \
+	CGO_ENABLED=1 \
 	GOOS=linux \
 	GOARCH=arm \
 	GOARM=7 \
@@ -165,7 +165,7 @@ bin/linux/arm/7/${EXECUTABLE}: bindata
 		go build -ldflags "-X main.version=${VERSION:v%=%}" -o ${@}
 
 bin/tmp/${EXECUTABLE}: bindata
-	CGO_ENABLED=0 \
+	CGO_ENABLED=1 \
 	GOPROXY=${GOPROXY} \
 	GOPRIVATE=${GOPRIVATE} \
 		go build -ldflags "-X main.version=${VERSION:v%=%}" -o ${@}
@@ -173,13 +173,13 @@ bin/tmp/${EXECUTABLE}: bindata
 # GO-BINDATA
 # ==============================================================================
 BINDATA_TARGETS := \
-	pkg/storage/bindataSQL.go \
+	pkg/repository/db/bindataSQL.go \
 
 PHONY+=bindata
 bindata: clean ${BINDATA_TARGETS}
 
-pkg/storage/bindataSQL.go:
-	go-bindata -pkg storage -o ./pkg/storage/bindataSQL.go pkg/storage/postgres/***
+pkg/repository/db/bindataSQL.go:
+	go-bindata -pkg db -o ./pkg/repository/db/bindataSQL.go pkg/repository/db/postgres/*** pkg/repository/db/sqlite3/***
 
 # TEST
 # ==============================================================================

cli/root.go

@@ -83,7 +83,7 @@ func preRunError(cmd *cobra.Command, args []string) error {
 				Name:         hostname,
 				CreationDate: postgresTimeStamp,
 			},
-			StorageEndpoint: "file:/var/log/flucky/sqlite.db?cache=shared&mode=memory",
+			StorageEndpoint: "sqlite3:///var/log/flucky/sqlite.db?cache=shared&mode=memory&FKSupport=True",
 		}
 
 		err = config.Write(&cnf, configFile)

cli/sensor/sensor.go

@@ -2,13 +2,16 @@ package sensor
 
 import (
 	"fmt"
+	"net/url"
 	"os"
 
 	uuid "github.com/satori/go.uuid"
 	"github.com/spf13/cobra"
 	"github.com/volker-raschek/flucky/pkg/cli"
 	"github.com/volker-raschek/flucky/pkg/config"
+	"github.com/volker-raschek/flucky/pkg/repository"
 	"github.com/volker-raschek/flucky/pkg/types"
+	"github.com/volker-raschek/go-logger/pkg/logger"
 )
 
 // InitCmd initialize all sensor subcommands
@@ -39,7 +42,7 @@ flucky sensor add --i2c-bus 1 --i2c-address 0x76 wetter-station BME280`,
 	disableSensorCmd := &cobra.Command{
 		Use:     "disable",
 		Short:   "Disable Sensor",
-		Args:    cobra.ExactArgs(1),
+		Args:    cobra.MinimumNArgs(1),
 		Example: "flucky sensor disable outdoor",
 		RunE:    disableSensor,
 	}
@@ -48,7 +51,7 @@ flucky sensor add --i2c-bus 1 --i2c-address 0x76 wetter-station BME280`,
 		Use:     "enable",
 		Short:   "Enable Sensor",
 		Example: "flucky sensor enable outdoor",
-		Args:    cobra.ExactArgs(1),
+		Args:    cobra.MinimumNArgs(1),
 		RunE:    enableSensor,
 	}
 
@@ -64,10 +67,9 @@ flucky sensor add --i2c-bus 1 --i2c-address 0x76 wetter-station BME280`,
 		Short:   "Remove Sensor",
 		Aliases: []string{"rm"},
 		Example: "flucky sensor remove outdoor",
-		Args:    cobra.ExactArgs(1),
+		Args:    cobra.MinimumNArgs(1),
 		RunE:    removeSensor,
 	}
-	removeSensorCmd.Flags().Bool("definitive", true, "Remove the sensor definitive from the backend")
 
 	renameSensorCmd := &cobra.Command{
 		Use:   "rename",
@@ -162,17 +164,34 @@ func addSensor(cmd *cobra.Command, args []string) error {
 		return err
 	}
 
+	storageEndpoint, err := url.Parse(cnf.StorageEndpoint)
+	if err != nil {
+		return err
+	}
+
+	// loglevel, err := cmd.Flags().GetString("loglevel")
+	// if err != nil {
+	// 	return fmt.Errorf("No loglevel defined")
+	// }
+
+	flogger := logger.NewDefaultLogger(logger.LogLevelDebug)
+
+	repo, err := repository.New(storageEndpoint, flogger)
+	if err != nil {
+		return err
+	}
+
 	// add sensor entry to list
-	err = cnf.AddSensor(sensor)
+	err = repo.AddSensors(sensor)
 	if err != nil {
 		return err
 	}
 
 	// save new configuration
-	err = config.Write(cnf, configFile)
-	if err != nil {
-		return err
-	}
+	// err = config.Write(cnf, configFile)
+	// if err != nil {
+	// 	return err
+	// }
 
 	return nil
 }
@@ -189,17 +208,24 @@ func disableSensor(cmd *cobra.Command, args []string) error {
 		return err
 	}
 
-	err = cnf.DisableSensor(args[0])
+	storageEndpoint, err := url.Parse(cnf.StorageEndpoint)
 	if err != nil {
 		return err
 	}
 
-	err = config.Write(cnf, configFile)
+	// loglevel, err := cmd.Flags().GetString("loglevel")
+	// if err != nil {
+	// 	return fmt.Errorf("No loglevel defined")
+	// }
+
+	flogger := logger.NewDefaultLogger(logger.LogLevelDebug)
+
+	repo, err := repository.New(storageEndpoint, flogger)
 	if err != nil {
 		return err
 	}
 
-	return nil
+	return repo.DisableSensorsByNames(args...)
 }
 
 func enableSensor(cmd *cobra.Command, args []string) error {
@@ -214,16 +240,24 @@ func enableSensor(cmd *cobra.Command, args []string) error {
 		return err
 	}
 
-	err = cnf.EnableSensor(args[0])
+	storageEndpoint, err := url.Parse(cnf.StorageEndpoint)
 	if err != nil {
 		return err
 	}
 
-	err = config.Write(cnf, configFile)
+	// loglevel, err := cmd.Flags().GetString("loglevel")
+	// if err != nil {
+	// 	return fmt.Errorf("No loglevel defined")
+	// }
+
+	flogger := logger.NewDefaultLogger(logger.LogLevelDebug)
+
+	repo, err := repository.New(storageEndpoint, flogger)
 	if err != nil {
 		return err
 	}
-	return nil
+
+	return repo.EnableSensorsByNames(args...)
 }
 
 func listSensors(cmd *cobra.Command, args []string) error {
@@ -238,12 +272,30 @@ func listSensors(cmd *cobra.Command, args []string) error {
 		return err
 	}
 
-	err = cli.PrintSensors(cnf, os.Stdout)
+	storageEndpoint, err := url.Parse(cnf.StorageEndpoint)
 	if err != nil {
 		return err
 	}
 
-	err = config.Write(cnf, configFile)
+	// loglevel, err := cmd.Flags().GetString("loglevel")
+	// if err != nil {
+	// 	return fmt.Errorf("No loglevel defined")
+	// }
+
+	flogger := logger.NewDefaultLogger(logger.LogLevelDebug)
+
+	repo, err := repository.New(storageEndpoint, flogger)
+	if err != nil {
+		return err
+	}
+
+	// add sensor entry to list
+	sensors, err := repo.GetSensors()
+	if err != nil {
+		return err
+	}
+
+	err = cli.PrintSensors(sensors, os.Stdout)
 	if err != nil {
 		return err
 	}
@@ -258,27 +310,29 @@ func removeSensor(cmd *cobra.Command, args []string) error {
 		return fmt.Errorf("No config file defined")
 	}
 
-	definitive, err := cmd.Flags().GetBool("definitive")
-	if err != nil {
-		return fmt.Errorf("No config file defined")
-	}
-
 	cnf, err := config.Read(configFile)
 	if err != nil {
 		return err
 	}
 
-	err = cnf.RemoveSensor(args[0], definitive)
+	storageEndpoint, err := url.Parse(cnf.StorageEndpoint)
 	if err != nil {
 		return err
 	}
 
-	err = config.Write(cnf, configFile)
+	// loglevel, err := cmd.Flags().GetString("loglevel")
+	// if err != nil {
+	// 	return fmt.Errorf("No loglevel defined")
+	// }
+
+	flogger := logger.NewDefaultLogger(logger.LogLevelDebug)
+
+	repo, err := repository.New(storageEndpoint, flogger)
 	if err != nil {
 		return err
 	}
 
-	return nil
+	return repo.RemoveSensorsByNames(args...)
 }
 
 func renameSensor(cmd *cobra.Command, args []string) error {
@@ -293,15 +347,22 @@ func renameSensor(cmd *cobra.Command, args []string) error {
 		return err
 	}
 
-	err = cnf.RenameSensor(args[0], args[1])
+	storageEndpoint, err := url.Parse(cnf.StorageEndpoint)
 	if err != nil {
 		return err
 	}
 
-	err = config.Write(cnf, configFile)
+	// loglevel, err := cmd.Flags().GetString("loglevel")
+	// if err != nil {
+	// 	return fmt.Errorf("No loglevel defined")
+	// }
+
+	flogger := logger.NewDefaultLogger(logger.LogLevelDebug)
+
+	repo, err := repository.New(storageEndpoint, flogger)
 	if err != nil {
 		return err
 	}
 
-	return nil
+	return repo.RenameSensors(args[0], args[1])
 }

go.mod

@@ -9,6 +9,7 @@ require (
 	github.com/d2r2/go-logger v0.0.0-20181221090742-9998a510495e
 	github.com/go-flucky/go-dht v0.1.1
 	github.com/lib/pq v1.4.0
+	github.com/mattn/go-sqlite3 v1.10.0
 	github.com/satori/go.uuid v1.2.0
 	github.com/spf13/cobra v1.0.0
 	github.com/stretchr/testify v1.5.1

go.sum

@@ -70,6 +70,11 @@ github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/lib/pq v1.4.0 h1:TmtCFbH+Aw0AixwyttznSMQDgbR5Yed/Gg6S8Funrhc=
 github.com/lib/pq v1.4.0/go.mod h1:5WUZQaWbwv1U+lTReE5YruASi9Al49XbQIvNi/34Woo=
 github.com/magiconair/properties v1.8.0/go.mod h1:PppfXfuXeibc/6YijjN8zIbojt8czPbwD3XqdrwzmxQ=
+github.com/mattn/go-sqlite3 v1.10.0 h1:jbhqpg7tQe4SupckyijYiy0mJJ/pRyHvXf7JdWK860o=
+github.com/mattn/go-sqlite3 v1.10.0/go.mod h1:FPy6KqzDD04eiIsT53CuJW3U88zkxoIYsOqkbpncsNc=
+github.com/mattn/go-sqlite3 v1.13.0 h1:LnJI81JidiW9r7pS/hXe6cFeO5EXNq7KbfvoJLRI69c=
+github.com/mattn/go-sqlite3 v2.0.3+incompatible h1:gXHsfypPkaMZrKbD5209QV9jbUTJKjyR5WD3HYQSd+U=
+github.com/mattn/go-sqlite3 v2.0.3+incompatible/go.mod h1:FPy6KqzDD04eiIsT53CuJW3U88zkxoIYsOqkbpncsNc=
 github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
 github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
 github.com/mitchellh/mapstructure v1.1.2/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y=

pkg/cli/cli.go

@@ -5,18 +5,18 @@ import (
 	"io"
 	"text/tabwriter"
 
-	"github.com/volker-raschek/flucky/pkg/config"
+	"github.com/volker-raschek/flucky/pkg/types"
 )
 
 // PrintSensors displays a list with all configured sensors
-func PrintSensors(cnf *config.Config, w io.Writer) error {
+func PrintSensors(sensors []*types.Sensor, w io.Writer) error {
 
 	// declar tabwriter
 	tw := tabwriter.NewWriter(w, 0, 0, 3, ' ', 0)
 
 	fmt.Fprint(tw, "name\tlocation\ttype\twire-id\ti2c-bus\ti2c-address\tgpio\ttick-duration\tenabled\n")
 
-	for _, sensor := range cnf.Sensors {
+	for _, sensor := range sensors {
 		fmt.Fprintf(tw, "%v\t%v\t%v\t", sensor.Name, sensor.Location, sensor.Model)
 
 		if sensor.WireID != nil {

pkg/config/config.go

@@ -1,7 +1,6 @@
 package config
 
 import (
-	"context"
 	"fmt"
 	"os"
 	"path/filepath"
@@ -10,7 +9,6 @@ import (
 	"time"
 
 	"github.com/volker-raschek/flucky/pkg/internal/format"
-	"github.com/volker-raschek/flucky/pkg/storage"
 
 	uuid "github.com/satori/go.uuid"
 	"github.com/volker-raschek/flucky/pkg/types"
@@ -159,12 +157,7 @@ func (cnf *Config) GetSensorByID(id string) *types.Sensor {
 // 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, definitive bool) error {
-
-	backend, err := storage.New(cnf.StorageEndpoint, nil)
-	if err != nil {
-		return err
-	}
+func (cnf *Config) RemoveSensor(name string) error {
 
 	for i, sensor := range cnf.Sensors {
 		// remove machted name
@@ -172,13 +165,6 @@ func (cnf *Config) RemoveSensor(name string, definitive bool) error {
 			sensor.Name == name {
 			cnf.Sensors = append(cnf.Sensors[:i], cnf.Sensors[i+1:]...)
 
-			if definitive {
-				err = backend.RemoveSensorByName(context.Background(), name)
-				if err != nil {
-					return err
-				}
-			}
-
 			return nil
 		}
 		// remove machted uuid
@@ -186,13 +172,6 @@ func (cnf *Config) RemoveSensor(name string, definitive bool) error {
 			sensor.ID == name {
 			cnf.Sensors = append(cnf.Sensors[:i], cnf.Sensors[i+1:]...)
 
-			if definitive {
-				err = backend.RemoveSensorByID(context.Background(), name)
-				if err != nil {
-					return err
-				}
-			}
-
 			return nil
 		}
 	}

pkg/daemon/daemon.go

@@ -2,13 +2,14 @@ package daemon
 
 import (
 	"context"
+	"net/url"
 	"os"
 	"os/signal"
 	"syscall"
 
 	"github.com/volker-raschek/flucky/pkg/config"
+	"github.com/volker-raschek/flucky/pkg/repository/db"
 	"github.com/volker-raschek/flucky/pkg/sensor"
-	"github.com/volker-raschek/flucky/pkg/storage"
 	"github.com/volker-raschek/flucky/pkg/types"
 	"github.com/volker-raschek/go-logger/pkg/logger"
 )
@@ -31,7 +32,12 @@ func Start(cnf *config.Config, flogger logger.Logger) error {
 	measuredValueChannel := make(chan *types.MeasuredValue, 0)
 
 	// load storage endpoint
-	storageEndpoint, err := storage.New(cnf.StorageEndpoint, flogger)
+	storageEndpointURL, err := url.Parse(cnf.StorageEndpoint)
+	if err != nil {
+		return err
+	}
+
+	backend, err := db.New(storageEndpointURL, flogger)
 	if err != nil {
 		return err
 	}
@@ -43,18 +49,18 @@ func Start(cnf *config.Config, flogger logger.Logger) error {
 	parentCtx := context.Background()
 
 	// Insert device if not exist
-	device, _ := storageEndpoint.SelectDevice(parentCtx, cnf.Device.ID)
+	device, _ := backend.SelectDevice(parentCtx, cnf.Device.ID)
 	if device == nil {
-		if err := storageEndpoint.InsertDevice(parentCtx, cnf.Device); err != nil {
+		if err := backend.InsertDevices(parentCtx, cnf.Device); err != nil {
 			return err
 		}
 	}
 
 	// Insert sensors if not exist
 	for _, cnfSensor := range cnf.Sensors {
-		sensor, _ := storageEndpoint.SelectSensor(parentCtx, cnfSensor.ID)
+		sensor, _ := backend.SelectSensor(parentCtx, cnfSensor.ID)
 		if sensor == nil {
-			if err := storageEndpoint.InsertSensor(parentCtx, cnfSensor); err != nil {
+			if err := backend.InsertSensors(parentCtx, cnfSensor); err != nil {
 				return err
 			}
 		}
@@ -91,7 +97,7 @@ func Start(cnf *config.Config, flogger logger.Logger) error {
 
 			if cap(measuredValues) == len(measuredValues) {
 				flogger.Debug("Flush cache")
-				err := storageEndpoint.InsertMeasuredValues(ctx, measuredValues)
+				err := backend.InsertMeasuredValues(ctx, measuredValues...)
 				if err != nil {
 					flogger.Error("%v", err)
 				}
@@ -102,7 +108,7 @@ func Start(cnf *config.Config, flogger logger.Logger) error {
 			cancel()
 			close(measuredValueChannel)
 
-			err := storageEndpoint.InsertMeasuredValues(ctx, measuredValues)
+			err := backend.InsertMeasuredValues(ctx, measuredValues...)
 			if err != nil {
 				flogger.Error("%v", err)
 			}
@@ -110,6 +116,4 @@ func Start(cnf *config.Config, flogger logger.Logger) error {
 			break
 		}
 	}
-
-	return nil
 }

pkg/repository/db/db.go

@@ -0,0 +1,118 @@
+package db
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+	"net/url"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"github.com/volker-raschek/flucky/pkg/types"
+	"github.com/volker-raschek/go-logger/pkg/logger"
+)
+
+// Database is a general interface for a storage endpoint
+type Database interface {
+	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 storage provider
+func New(storageEndpoint *url.URL, flogger logger.Logger) (Database, error) {
+
+	// Check of nil pointer
+	for _, parameter := range []interface{}{
+		storageEndpoint,
+		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, storageEndpoint.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 storageEndpoint.Scheme {
+	// case "postgres":
+	// 	// postgres://[user]:[password]@[host]:[port]/[path]?[query]
+	// 	newDBO, err := sql.Open(storageEndpoint.Scheme, storageEndpoint.String())
+	// 	if err != nil {
+	// 		return nil, err
+	// 	}
+
+	// 	return &Postgres{
+	// 		dbo:     newDBO,
+	// 		flogger: flogger,
+	// 	}, nil
+
+	case "sqlite3":
+
+		if _, err := os.Stat(filepath.Dir(storageEndpoint.Path)); os.IsNotExist(err) {
+			err := os.MkdirAll(filepath.Dir(storageEndpoint.Path), 0755)
+			if err != nil {
+				return nil, err
+			}
+		}
+
+		// sqlite3:///[path]?[query]    flucky dsn
+		// file:///[path]?[query]       sql-lib dsn
+		newDBO, err := sql.Open(storageEndpoint.Scheme, fmt.Sprintf("file://%v?%v", storageEndpoint.Path, storageEndpoint.RawQuery))
+		if err != nil {
+			return nil, err
+		}
+
+		database = &SQLite{
+			dbo:     newDBO,
+			flogger: flogger,
+			queries: queries,
+		}
+	default:
+		return nil, fmt.Errorf("Unsupported database scheme: %v", storageEndpoint.Scheme)
+	}
+
+	err = database.Scheme(context.Background())
+	if err != nil {
+		return nil, err
+	}
+
+	return database, nil
+
+}

pkg/repository/db/postgres.go

@@ -1,28 +1,17 @@
-package storage
+package db
 
 import (
 	"context"
 	"database/sql"
 	"fmt"
-	"net/url"
 	"path/filepath"
 
 	_ "github.com/lib/pq"
+
 	"github.com/volker-raschek/flucky/pkg/types"
 	"github.com/volker-raschek/go-logger/pkg/logger"
 )
 
-// Storage is a general interface for a storage endpoint
-type Storage interface {
-	InsertDevice(ctx context.Context, device *types.Device) error
-	InsertMeasuredValues(ctx context.Context, measuredValues []*types.MeasuredValue) error
-	InsertSensor(ctx context.Context, sensor *types.Sensor) error
-	RemoveSensorByID(ctx context.Context, sensorID string) error
-	RemoveSensorByName(ctx context.Context, sensorName string) error
-	SelectDevice(ctx context.Context, id string) (*types.Device, error)
-	SelectSensor(ctx context.Context, id string) (*types.Sensor, error)
-}
-
 var (
 	postgresAssetPath = "pkg/storage/postgres"
 )
@@ -33,8 +22,70 @@ type Postgres struct {
 	flogger logger.Logger
 }
 
-// InsertDevice into the database
-func (postgres *Postgres) InsertDevice(ctx context.Context, device *types.Device) error {
+// DeleteDevices from the database
+func (postgres *Postgres) DeleteDevices(ctx context.Context, deviceIDs ...string) error {
+	asset := filepath.Join(postgresAssetPath, "deleteDevice.sql")
+	queryBytes, err := Asset(asset)
+	if err != nil {
+		return fmt.Errorf("Failed to load asset %v: %v", asset, err)
+	}
+	query := string(queryBytes)
+
+	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 {
+	asset := filepath.Join(postgresAssetPath, "deleteSensor.sql")
+	queryBytes, err := Asset(asset)
+	if err != nil {
+		return fmt.Errorf("Failed to load asset %v: %v", asset, err)
+	}
+	query := string(queryBytes)
+
+	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 {
 	asset := filepath.Join(postgresAssetPath, "insertDevice.sql")
 	queryBytes, err := Asset(asset)
 	if err != nil {
@@ -53,17 +104,19 @@ func (postgres *Postgres) InsertDevice(ctx context.Context, device *types.Device
 	}
 	defer stmt.Close()
 
-	_, err = stmt.Exec(&device.ID, &device.Name, &device.Location, &device.CreationDate)
-	if err != nil {
-		tx.Rollback()
-		return fmt.Errorf("Failed to execute statement: %v", err)
+	for _, device := range devices {
+		_, err = stmt.Exec(&device.ID, &device.Name, &device.Location, &device.CreationDate)
+		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 {
+func (postgres *Postgres) InsertMeasuredValues(ctx context.Context, measuredValues ...*types.MeasuredValue) error {
 	splittedMeasuredValues := make(map[string][]*types.MeasuredValue, 0)
 
 	for _, measuredValue := range measuredValues {
@@ -127,8 +180,8 @@ func (postgres *Postgres) InsertMeasuredValues(ctx context.Context, measuredValu
 	return tx.Commit()
 }
 
-// InsertSensor into the database
-func (postgres *Postgres) InsertSensor(ctx context.Context, sensor *types.Sensor) error {
+// InsertSensors into the database
+func (postgres *Postgres) InsertSensors(ctx context.Context, sensors ...*types.Sensor) error {
 	asset := filepath.Join(postgresAssetPath, "insertSensor.sql")
 	queryBytes, err := Asset(asset)
 	if err != nil {
@@ -147,68 +200,12 @@ func (postgres *Postgres) InsertSensor(ctx context.Context, sensor *types.Sensor
 	}
 	defer stmt.Close()
 
-	_, err = stmt.Exec(&sensor.ID, &sensor.Name, &sensor.Location, &sensor.WireID, &sensor.I2CBus, &sensor.I2CAddress, &sensor.GPIONumber, &sensor.Model, &sensor.Enabled, &sensor.DeviceID, &sensor.CreationDate)
-	if err != nil {
-		tx.Rollback()
-		return fmt.Errorf("Failed to execute statement: %v", err)
-	}
-
-	return tx.Commit()
-}
-
-// RemoveSensorByID from the database
-func (postgres *Postgres) RemoveSensorByID(ctx context.Context, sensorID string) error {
-	asset := filepath.Join(postgresAssetPath, "removeSensorByID.sql")
-	queryBytes, err := Asset(asset)
-	if err != nil {
-		return fmt.Errorf("Failed to load asset %v: %v", asset, err)
-	}
-	query := string(queryBytes)
-
-	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()
-
-	_, err = stmt.Exec(sensorID)
-	if err != nil {
-		tx.Rollback()
-		return err
-	}
-
-	return tx.Commit()
-}
-
-// RemoveSensorByName from the database
-func (postgres *Postgres) RemoveSensorByName(ctx context.Context, sensorID string) error {
-	asset := filepath.Join(postgresAssetPath, "removeSensorByName.sql")
-	queryBytes, err := Asset(asset)
-	if err != nil {
-		return fmt.Errorf("Failed to load asset %v: %v", asset, err)
-	}
-	query := string(queryBytes)
-
-	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()
-
-	_, err = stmt.Exec(sensorID)
-	if err != nil {
-		tx.Rollback()
-		return err
+	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.DeviceID, &sensor.CreationDate)
+		if err != nil {
+			tx.Rollback()
+			return fmt.Errorf("Failed to execute statement: %v", err)
+		}
 	}
 
 	return tx.Commit()
@@ -216,7 +213,7 @@ func (postgres *Postgres) RemoveSensorByName(ctx context.Context, sensorID strin
 
 // SelectDevice from database
 func (postgres *Postgres) SelectDevice(ctx context.Context, id string) (*types.Device, error) {
-	asset := filepath.Join(postgresAssetPath, "selectDeviceByID.sql")
+	asset := filepath.Join(postgresAssetPath, "selectDevice.sql")
 	queryBytes, err := Asset(asset)
 	if err != nil {
 		return nil, fmt.Errorf("Failed to load asset %v: %v", asset, err)
@@ -242,12 +239,60 @@ func (postgres *Postgres) SelectDevice(ctx context.Context, id string) (*types.D
 		return nil, fmt.Errorf("Failed to scan row: %v", err)
 	}
 
+	err = tx.Commit()
+	if err != nil {
+		return nil, fmt.Errorf("Failed to commit transaction: %v", err)
+	}
+
 	return device, nil
 }
 
+// SelectDevices from the database
+func (postgres *Postgres) SelectDevices(ctx context.Context) ([]*types.Device, error) {
+	asset := filepath.Join(postgresAssetPath, "selectDevices.sql")
+	queryBytes, err := Asset(asset)
+	if err != nil {
+		return nil, fmt.Errorf("Failed to load asset %v: %v", asset, err)
+	}
+	query := string(queryBytes)
+
+	tx, err := postgres.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: true})
+	if err != nil {
+		return nil, fmt.Errorf("Failed to begin new transaction: %v", err)
+	}
+
+	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()
+	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)
+		if err != nil {
+			return nil, fmt.Errorf("Failed to scan row: %v", err)
+		}
+		devices = append(devices, device)
+	}
+
+	err = tx.Commit()
+	if err != nil {
+		return nil, fmt.Errorf("Failed to commit transaction: %v", err)
+	}
+
+	return devices, nil
+}
+
 // SelectSensor from database
 func (postgres *Postgres) SelectSensor(ctx context.Context, id string) (*types.Sensor, error) {
-	asset := filepath.Join(postgresAssetPath, "selectSensorByID.sql")
+	asset := filepath.Join(postgresAssetPath, "selectSensor.sql")
 	queryBytes, err := Asset(asset)
 	if err != nil {
 		return nil, fmt.Errorf("Failed to load asset %v: %v", asset, err)
@@ -273,28 +318,63 @@ func (postgres *Postgres) SelectSensor(ctx context.Context, id string) (*types.S
 		return nil, fmt.Errorf("Failed to scan row: %v", err)
 	}
 
+	err = tx.Commit()
+	if err != nil {
+		return nil, fmt.Errorf("Failed to commit transaction: %v", err)
+	}
+
 	return sensor, nil
 }
 
-// New returns a new storage provider
-func New(storageEndpoint string, flogger logger.Logger) (Storage, error) {
-	storageEndpointURL, err := url.Parse(storageEndpoint)
+// SelectSensors from the database
+func (postgres *Postgres) SelectSensors(ctx context.Context) ([]*types.Sensor, error) {
+	asset := filepath.Join(postgresAssetPath, "selectSensors.sql")
+	queryBytes, err := Asset(asset)
 	if err != nil {
-		return nil, err
+		return nil, fmt.Errorf("Failed to load asset %v: %v", asset, err)
+	}
+	query := string(queryBytes)
+
+	tx, err := postgres.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: true})
+	if err != nil {
+		return nil, fmt.Errorf("Failed to begin new transaction: %v", err)
 	}
 
-	switch storageEndpointURL.Scheme {
-	case "postgres":
-		newDBO, err := sql.Open(storageEndpointURL.Scheme, storageEndpointURL.String())
+	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()
+	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.DeviceID, &sensor.CreationDate)
 		if err != nil {
-			return nil, err
+			return nil, fmt.Errorf("Failed to scan row: %v", err)
 		}
-
-		return &Postgres{
-			dbo:     newDBO,
-			flogger: flogger,
-		}, nil
-	default:
-		return nil, fmt.Errorf("Unsupported database scheme: %v", storageEndpointURL.Scheme)
+		sensors = append(sensors, sensor)
 	}
+
+	err = tx.Commit()
+	if err != nil {
+		return nil, fmt.Errorf("Failed to commit transaction: %v", err)
+	}
+
+	return sensors, nil
+}
+
+// UpdateDevices updates a device in the database
+func (postgres *Postgres) UpdateDevices(ctx context.Context, devices ...*types.Device) error {
+	return nil
+}
+
+// UpdateSensors updates a sensor in the database
+func (postgres *Postgres) UpdateSensors(ctx context.Context, sensor ...*types.Sensor) error {
+	return nil
 }

pkg/repository/db/postgres/deleteDevice.sql

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

pkg/repository/db/postgres/selectDevices.sql

@@ -0,0 +1,7 @@
+SELECT
+  device_id,
+  device_name,
+  device_location,
+  creation_date
+FROM
+  devices;

pkg/repository/db/postgres/selectSensors.sql

@@ -0,0 +1,14 @@
+SELECT
+  sensor_id,
+  sensor_name,
+  sensor_location,
+  wire_id,
+  i2c_bus,
+  i2c_address,
+  gpio_number,
+  sensor_model,
+  sensor_enabled,
+  device_id,
+  creation_date
+FROM
+  sensors;

pkg/repository/db/postgres/updateDevice.sql

@@ -0,0 +1,8 @@
+UPDATE device
+SET
+  device_id = $1,
+  device_name = $2,
+  device_location = $3,
+  creation_date = $4
+WHERE
+  device_id = $5,

pkg/repository/db/postgres/updateSensor.sql

@@ -0,0 +1,15 @@
+UPDATE sensors
+SET
+  sensor_id = $1,
+  sensor_name = $2,
+  sensor_location = $3,
+  wire_id = $4,
+  i2c_bus = $5,
+  i2c_address = $6,
+  gpio_number = $7,
+  sensor_model = $8,
+  sensor_enabled = $9,
+  device_id = $10,
+  creation_date = $11
+WHERE
+  sensor_id = $12;

pkg/repository/db/sqlite.go

@@ -0,0 +1,723 @@
+package db
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+
+	_ "github.com/mattn/go-sqlite3"
+	"github.com/volker-raschek/flucky/pkg/types"
+	"github.com/volker-raschek/go-logger/pkg/logger"
+)
+
+var (
+	sqliteAssetPath = "pkg/storage/sqlite"
+)
+
+// SQLite implementation
+type SQLite struct {
+	dbo     *sql.DB
+	flogger logger.Logger
+	queries map[string]string
+}
+
+// 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)
+		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.FromDate,
+				&measuredValue.TillDate,
+				&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.DeviceID,
+			&sensor.CreationDate,
+		)
+		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["createTableHumidites.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
+	}
+
+	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, nil)
+	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()
+	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,
+		)
+		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() {
+		measuredValues := new(types.MeasuredValue)
+		err := rows.Scan(
+			&measuredValues.ID,
+			&measuredValues.Value,
+			&measuredValues.FromDate,
+			&measuredValues.TillDate,
+			&measuredValues.SensorID,
+			&measuredValues.CreationDate,
+			&measuredValues.UpdateDate,
+		)
+
+		if err != nil {
+			tx.Rollback()
+			return nil, err
+		}
+	}
+
+	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, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	err = tx.Commit()
+	if err != nil {
+		return nil, fmt.Errorf("Failed to commit transaction: %v", err)
+	}
+
+	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, nil)
+	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()
+	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.DeviceID,
+			&sensor.CreationDate,
+		)
+
+		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.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.DeviceID,
+			&sensor.CreationDate,
+			&sensor.ID,
+		)
+		if err != nil {
+			tx.Rollback()
+			return err
+		}
+	}
+
+	return tx.Commit()
+}

pkg/repository/db/sqlite3/createTableDevices.sql

@@ -0,0 +1,6 @@
+CREATE TABLE IF NOT EXISTS devices (
+  device_id               CHAR(37)                                    PRIMARY KEY,
+  device_name             VARCHAR(64)                                 NOT NULL,
+  device_location         VARCHAR(64),
+  creation_date           TIMESTAMP       DEFAULT CURRENT_TIMESTAMP   NOT NULL
+);

pkg/repository/db/sqlite3/createTableHumidities.sql

@@ -0,0 +1,10 @@
+CREATE TABLE IF NOT EXISTS humidities (
+  humidity_id             CHAR(37)                                    PRIMARY KEY,
+  humidity_value          NUMERIC(10,3)                               NOT NULL,
+  humidity_from_date      TIMESTAMP                                   NOT NULL,
+  humidity_till_date      TIMESTAMP,
+  sensor_id               CHAR(37)                                    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

@@ -0,0 +1,10 @@
+CREATE TABLE IF NOT EXISTS pressures (
+  pressure_id             CHAR(37)                                    PRIMARY KEY,
+  pressure_value          NUMERIC(10,3)                               NOT NULL,
+  pressure_from_date      TIMESTAMP                                   NOT NULL,
+  pressure_till_date      TIMESTAMP,
+  sensor_id               CHAR(37)                                    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/createTableSensors.sql

@@ -0,0 +1,14 @@
+CREATE TABLE IF NOT EXISTS sensors (
+  sensor_id               CHAR(37)                                    PRIMARY KEY,
+  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_enabled          INTEGER(1)      DEFAULT 1                   NOT NULL,
+  device_id               CHAR(37)                                    NOT NULL,
+  creation_date           TIMESTAMP       DEFAULT CURRENT_TIMESTAMP,
+  FOREIGN KEY(device_id) REFERENCES devices(device_id)
+);

pkg/repository/db/sqlite3/createTableTemperatures.sql

@@ -0,0 +1,10 @@
+CREATE TABLE IF NOT EXISTS temperatures (
+  temperature_id          CHAR(37)                                      PRIMARY KEY,
+  temperature_value       NUMERIC(10,3)                                 NOT NULL,
+  temperature_from_date   TIMESTAMP                                     NOT NULL,
+  temperature_till_date   TIMESTAMP,
+  sensor_id               CHAR(37)                                      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/deleteDevice.sql

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

pkg/repository/db/sqlite3/deleteSensor.sql

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

pkg/repository/db/sqlite3/insertDevice.sql

@@ -0,0 +1,7 @@
+INSERT INTO devices (
+  device_id,
+  device_name,
+  device_location,
+  creation_date
+)
+VALUES ($1, $2, $3, $4);

pkg/repository/db/sqlite3/insertHumidity.sql

@@ -0,0 +1,10 @@
+INSERT INTO humidities (
+  humidity_id,
+  humidity_value,
+  humidity_from_date,
+  humidity_till_date,
+  sensor_id,
+  creation_date,
+  update_date
+)
+VALUES ($1, $2, $3, $4, $5, $6, $7);

pkg/repository/db/sqlite3/insertPressure.sql

@@ -0,0 +1,10 @@
+INSERT INTO pressures (
+  pressure_id,
+  pressure_value,
+  pressure_from_date,
+  pressure_till_date,
+  sensor_id,
+  creation_date,
+  update_date
+)
+VALUES ($1, $2, $3, $4, $5, $6, $7);

pkg/repository/db/sqlite3/insertSensor.sql

@@ -0,0 +1,14 @@
+INSERT INTO sensors (
+  sensor_id,
+  sensor_name,
+  sensor_location,
+  wire_id,
+  i2c_bus,
+  i2c_address,
+  gpio_number,
+  sensor_model,
+  sensor_enabled,
+  device_id,
+  creation_date
+)
+VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11);

pkg/repository/db/sqlite3/insertTemperature.sql

@@ -0,0 +1,10 @@
+INSERT INTO temperatures (
+  temperature_id,
+  temperature_value,
+  temperature_from_date,
+  temperature_till_date,
+  sensor_id,
+  creation_date,
+  update_date
+)
+VALUES ($1, $2, $3, $4, $5, $6, $7);

pkg/repository/db/sqlite3/selectDevice.sql

@@ -0,0 +1,8 @@
+SELECT
+  device_id,
+  device_name,
+  device_location,
+  creation_date
+FROM
+  devices
+WHERE device_id = $1;

pkg/repository/db/sqlite3/selectDevices.sql

@@ -0,0 +1,7 @@
+SELECT
+  device_id,
+  device_name,
+  device_location,
+  creation_date
+FROM
+  devices;

pkg/repository/db/sqlite3/selectHumidities.sql

@@ -0,0 +1,10 @@
+SELECT
+  humidity_id,
+  humidity_value,
+  humidity_from_date,
+  humidity_till_date,
+  sensor_id,
+  creation_date,
+  update_date
+FROM
+  humidities

pkg/repository/db/sqlite3/selectHumidity.sql

@@ -0,0 +1,12 @@
+SELECT
+  humidity_id,
+  humidity_value,
+  humidity_from_date,
+  humidity_till_date,
+  sensor_id,
+  creation_date,
+  update_date
+FROM
+  humidities
+WHERE
+  humidity_id = $1

pkg/repository/db/sqlite3/selectPressure.sql

@@ -0,0 +1,12 @@
+SELECT
+  pressure_id,
+  pressure_value,
+  pressure_from_date,
+  pressure_till_date,
+  sensor_id,
+  creation_date,
+  update_date
+FROM
+  pressures
+WHERE
+  pressure_id = $1

pkg/repository/db/sqlite3/selectPressures.sql

@@ -0,0 +1,10 @@
+SELECT
+  pressure_id,
+  pressure_value,
+  pressure_from_date,
+  pressure_till_date,
+  sensor_id,
+  creation_date,
+  update_date
+FROM
+  pressures

pkg/repository/db/sqlite3/selectSensor.sql

@@ -0,0 +1,16 @@
+SELECT
+  sensor_id,
+  sensor_name,
+  sensor_location,
+  wire_id,
+  i2c_bus,
+  i2c_address,
+  gpio_number,
+  sensor_model,
+  sensor_enabled,
+  device_id,
+  creation_date
+FROM
+  sensors
+WHERE
+  sensor_id = $1;

pkg/repository/db/sqlite3/selectSensors.sql

@@ -0,0 +1,14 @@
+SELECT
+  sensor_id,
+  sensor_name,
+  sensor_location,
+  wire_id,
+  i2c_bus,
+  i2c_address,
+  gpio_number,
+  sensor_model,
+  sensor_enabled,
+  device_id,
+  creation_date
+FROM
+  sensors;

pkg/repository/db/sqlite3/selectTemperature.sql

@@ -0,0 +1,12 @@
+SELECT
+  temperature_id,
+  temperature_value,
+  temperature_from_date,
+  temperature_till_date,
+  sensor_id,
+  creation_date,
+  update_date
+FROM
+  temperatures
+WHERE
+  temperature_id = $1

pkg/repository/db/sqlite3/selectTemperatures.sql

@@ -0,0 +1,10 @@
+SELECT
+  temperature_id,
+  temperature_value,
+  temperature_from_date,
+  temperature_till_date,
+  sensor_id,
+  creation_date,
+  update_date
+FROM
+  temperatures

pkg/repository/db/sqlite3/updateDevice.sql

@@ -0,0 +1,7 @@
+UPDATE device
+SET
+  device_name = $1,
+  device_location = $2,
+  creation_date = $3
+WHERE
+  device_id = $4,

pkg/repository/db/sqlite3/updateSensor.sql

@@ -0,0 +1,14 @@
+UPDATE sensors
+SET
+  sensor_name = $1,
+  sensor_location = $2,
+  wire_id = $3,
+  i2c_bus = $4,
+  i2c_address = $5,
+  gpio_number = $6,
+  sensor_model = $7,
+  sensor_enabled = $8,
+  device_id = $9,
+  creation_date = $10
+WHERE
+  sensor_id = $11;

pkg/repository/repository.go

@@ -0,0 +1,189 @@
+package repository
+
+import (
+	"context"
+	"net/url"
+	"strings"
+
+	"github.com/volker-raschek/flucky/pkg/repository/db"
+	"github.com/volker-raschek/flucky/pkg/types"
+	"github.com/volker-raschek/go-logger/pkg/logger"
+)
+
+// Repository represent a repository where all devices, sensors and measured
+// values are stored.
+type Repository struct {
+	database db.Database
+}
+
+// AddDevices to the repository
+func (repo *Repository) AddDevices(devices ...*types.Device) error {
+	return repo.database.InsertDevices(context.Background(), devices...)
+}
+
+// AddMeasuredValues to the repository
+func (repo *Repository) AddMeasuredValues(measuredValues ...*types.MeasuredValue) error {
+	return repo.database.InsertMeasuredValues(context.Background(), measuredValues...)
+}
+
+// AddSensors to the repository
+func (repo *Repository) AddSensors(sensors ...*types.Sensor) error {
+	return repo.database.InsertSensors(context.Background(), sensors...)
+}
+
+// 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...)
+}
+
+// EnableSensorsByNames enable all sensors which match bei their name
+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...)
+}
+
+// GetDevice returns a device by his id. If no device has been found, the
+// function returns nil.
+func (repo *Repository) GetDevice(deviceID string) (*types.Device, error) {
+	return repo.database.SelectDevice(context.Background(), deviceID)
+}
+
+// GetDevices returns all devices. If no devices has been found, the function
+// 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 sensors, nil
+}
+
+// RemoveDevices removes devices by their ids from the repository. Additional
+// 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.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 storageEndpoint
+func New(storageEndpoint *url.URL, flogger logger.Logger) (*Repository, error) {
+	database, err := db.New(storageEndpoint, flogger)
+	if err != nil {
+		return nil, err
+	}
+
+	return &Repository{
+		database: database,
+	}, nil
+}

pkg/storage/postgres/removeSensorByName.sql

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