model

type DDR interface {
	GetSF(lon LatLon) (string, error)
}

type Database interface {
	Connect() error
	Write([]Metric) error
	Query(string) ([][]Metric, error)
	//QueryMeasurementWithGroupBy(string, string) ([][]Metric, error)
	//QueryMeasurementWithFilter(string, string) ([][]Metric, error)
	//QueryMeasurementWithMaxAge(string, string) ([][]Metric, error)
	//QueryMeasurementWithMaxAgeAndFilter(string, string, string) ([][]Metric, error)
	HasMetric(Metric, time.Time) bool
	Close() error
}

type GeoJSON interface {
	GetGeoJSONFromSF(string, string) (string, error)
	GetGeoJSONFromAllSF(string) (string, error)
}

type LatLon struct {
	Latitude  float64
	Longitude float64
}

type Metric interface {
	// Getting data structure functions
	Name() string
	Tags() map[string]string
	Fields() map[string]interface{}
	Time() time.Time

	// Tag functions
	HasTag(key string) bool
	AddTag(key, value string)
	RemoveTag(key string)

	// Field functions
	HasField(key string) bool
	AddField(key string, value interface{})
	RemoveField(key string) error
}

type Range struct {
	Start int
	End   int
}