spanstore

type CompositeWriter struct {
	// contains filtered or unexported fields
}

type DownsamplingOptions struct {
	Ratio          float64
	HashSalt       string
	MetricsFactory metrics.Factory
}

type DownsamplingWriter struct {
	// contains filtered or unexported fields
}

type Operation struct {
	Name     string
	SpanKind string
}

type OperationQueryParameters struct {
	ServiceName string
	SpanKind    string
}

type Reader interface {
	// GetTrace retrieves the trace with a given id.
	//
	// If no spans are stored for this trace, it returns ErrTraceNotFound.
	GetTrace(ctx context.Context, traceID model.TraceID) (*model.Trace, error)

	// GetServices returns all service names known to the backend from spans
	// within its retention period.
	GetServices(ctx context.Context) ([]string, error)

	// GetOperations returns all operation names for a given service
	// known to the backend from spans within its retention period.
	GetOperations(ctx context.Context, query OperationQueryParameters) ([]Operation, error)

	// FindTraces returns all traces matching query parameters. There's currently
	// an implementation-dependent abiguity whether all query filters (such as
	// multiple tags) must apply to the same span within a trace, or can be satisfied
	// by different spans.
	//
	// If no matching traces are found, the function returns (nil, nil).
	FindTraces(ctx context.Context, query *TraceQueryParameters) ([]*model.Trace, error)

	// FindTraceIDs does the same search as FindTraces, but returns only the list
	// of matching trace IDs.
	//
	// If no matching traces are found, the function returns (nil, nil).
	FindTraceIDs(ctx context.Context, query *TraceQueryParameters) ([]model.TraceID, error)
}

type Sampler struct {
	// contains filtered or unexported fields
}

type TraceQueryParameters struct {
	ServiceName   string
	OperationName string
	Tags          map[string]string
	StartTimeMin  time.Time
	StartTimeMax  time.Time
	DurationMin   time.Duration
	DurationMax   time.Duration
	NumTraces     int
}

type Writer interface {
	WriteSpan(ctx context.Context, span *model.Span) error
}