fix: implement repository pkg

2020-05-21 17:40:24 +02:00
parent fb916c94ae
commit 8f1c7b10f7
50 changed files with 1619 additions and 178 deletions
--- a/pkg/repository/db/postgres.go
+++ b/pkg/repository/db/postgres.go
@ -0,0 +1,380 @@
+package db
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+	"path/filepath"
+
+	_ "github.com/lib/pq"
+
+	"github.com/volker-raschek/flucky/pkg/types"
+	"github.com/volker-raschek/go-logger/pkg/logger"
+)
+
+var (
+	postgresAssetPath = "pkg/storage/postgres"
+)
+
+// Postgres implementation
+type Postgres struct {
+	dbo     *sql.DB
+	flogger logger.Logger
+}
+
+// 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 {
+		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 _, 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 {
+	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, asset string, measuredValues []*types.MeasuredValue) error {
+		queryBytes, err := Asset(asset)
+		if err != nil {
+			return fmt.Errorf("Failed to load asset %v: %v", asset, err)
+		}
+		query := string(queryBytes)
+
+		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 asset string
+
+		switch measuredValueType {
+		case "humidity":
+			asset = filepath.Join(postgresAssetPath, "insertHumidity.sql")
+		case "pressure":
+			asset = filepath.Join(postgresAssetPath, "insertPressure.sql")
+		case "temperature":
+			asset = filepath.Join(postgresAssetPath, "insertTemperature.sql")
+		default:
+			tx.Rollback()
+			return fmt.Errorf("Measured value type %v not supported", measuredValueType)
+		}
+
+		err := insert(tx, asset, 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 {
+	asset := filepath.Join(postgresAssetPath, "insertSensor.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 _, 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()
+}
+
+// SelectDevice from database
+func (postgres *Postgres) SelectDevice(ctx context.Context, id string) (*types.Device, error) {
+	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)
+	}
+	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()
+
+	row := stmt.QueryRow(id)
+
+	device := new(types.Device)
+	err = row.Scan(&device.ID, &device.Name, &device.Location, &device.CreationDate)
+	if err != nil {
+		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, "selectSensor.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()
+
+	row := stmt.QueryRow(id)
+
+	sensor := new(types.Sensor)
+	err = row.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)
+	}
+
+	err = tx.Commit()
+	if err != nil {
+		return nil, fmt.Errorf("Failed to commit transaction: %v", err)
+	}
+
+	return sensor, nil
+}
+
+// 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, 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)
+	}
+
+	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)
+	}
+
+	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
+}