database

Documentation

Index

• func Middleware(db Datastore) func(http.Handler) http.Handler
• type ConnectorFunc
  • func NewPostgreSQLConnector() ConnectorFunc
  • func NewSQLiteConnector() ConnectorFunc
• type Datastore
  • func GetFromContext(ctx context.Context) (Datastore, error)
  • func NewDatabaseConnection(log logging.Logger, connect ConnectorFunc) (Datastore, error)

Functions

func Middleware

func Middleware(db Datastore) func(http.Handler) http.Handler

Middleware packs a pointer to the datastore into context

Types

type ConnectorFunc

type ConnectorFunc func() (*gorm.DB, error)

ConnectorFunc is used to inject a database connection method into NewDatabaseConnection

func NewPostgreSQLConnector

func NewPostgreSQLConnector() ConnectorFunc

NewPostgreSQLConnector opens a connection to a postgresql database

func NewSQLiteConnector

func NewSQLiteConnector() ConnectorFunc

NewSQLiteConnector opens a connection to a local sqlite database

type Datastore

type Datastore interface {
	AddTemperatureMeasurement(device *string, latitude, longitude, temp float64, water bool, when string) (*models.Temperature, error)
	GetLatestTemperatures() ([]models.Temperature, error)
	GetTemperaturesNearPoint(latitude, longitude float64, distance, resultLimit uint64) ([]models.Temperature, error)
	GetTemperaturesWithinRect(latitude0, longitude0, latitude1, longitude1 float64, resultLimit uint64) ([]models.Temperature, error)
}

Datastore is an interface that is used to inject the database into different handlers to improve testability

func GetFromContext

func GetFromContext(ctx context.Context) (Datastore, error)

GetFromContext extracts the database wrapper, if any, from the provided context

func NewDatabaseConnection

func NewDatabaseConnection(log logging.Logger, connect ConnectorFunc) (Datastore, error)

NewDatabaseConnection initializes a new connection to the database and wraps it in a Datastore