tsdb

type DefaultSqlEngine struct {
	MacroEngine SqlMacroEngine
	XormEngine  *xorm.Engine
}

type GetTsdbQueryEndpointFn func(dsInfo *models.DataSource) (TsdbQueryEndpoint, error)

type HandleRequestFunc func(ctx context.Context, dsInfo *models.DataSource, req *TsdbQuery) (*Response, error)

type Interval struct {
	Text  string
	Value time.Duration
}

type Query struct {
	RefId         string
	Model         *simplejson.Json
	Depends       []string
	DataSource    *models.DataSource
	Results       []*TimeSeries
	MaxDataPoints int64
	IntervalMs    int64
}

type QueryResult struct {
	Error       error            `json:"-"`
	ErrorString string           `json:"error,omitempty"`
	RefId       string           `json:"refId"`
	Meta        *simplejson.Json `json:"meta,omitempty"`
	Series      TimeSeriesSlice  `json:"series"`
	Tables      []*Table         `json:"tables"`
}

type Response struct {
	Results map[string]*QueryResult `json:"results"`
	Message string                  `json:"message,omitempty"`
}

type RowValues []interface{}

type SqlEngine interface {
	InitEngine(driverName string, dsInfo *models.DataSource, cnnstr string) error
	Query(
		ctx context.Context,
		ds *models.DataSource,
		query *TsdbQuery,
		transformToTimeSeries func(query *Query, rows *core.Rows, result *QueryResult) error,
		transformToTable func(query *Query, rows *core.Rows, result *QueryResult) error,
	) (*Response, error)
}

type SqlMacroEngine interface {
	Interpolate(timeRange *TimeRange, sql string) (string, error)
}

type Table struct {
	Columns []TableColumn `json:"columns"`
	Rows    []RowValues   `json:"rows"`
}

type TableColumn struct {
	Text string `json:"text"`
}

type TimePoint [2]null.Float

type TimeRange struct {
	From string
	To   string
	Now  time.Time
}

type TimeSeries struct {
	Name   string            `json:"name"`
	Points TimeSeriesPoints  `json:"points"`
	Tags   map[string]string `json:"tags,omitempty"`
}

type TimeSeriesPoints []TimePoint

type TimeSeriesSlice []*TimeSeries

type TsdbQuery struct {
	TimeRange *TimeRange
	Queries   []*Query
}

type TsdbQueryEndpoint interface {
	Query(ctx context.Context, ds *models.DataSource, query *TsdbQuery) (*Response, error)
}