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reader.go
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reader.go
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// Copyright (c) 2024 The Jaeger Authors.
// SPDX-License-Identifier: Apache-2.0
package spanstore
import (
"context"
"time"
"go.opentelemetry.io/collector/pdata/pcommon"
"go.opentelemetry.io/collector/pdata/ptrace"
spanstore_v1 "github.com/jaegertracing/jaeger/storage/spanstore"
)
// ErrTraceNotFound is returned by Reader's GetTrace if no data is found for given trace ID.
var ErrTraceNotFound = spanstore_v1.ErrTraceNotFound
// Reader finds and loads traces and other data from storage.
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 pcommon.TraceID) (ptrace.Traces, 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 ambiguity 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) ([]ptrace.Traces, 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) ([]pcommon.TraceID, error)
}
// TraceQueryParameters contains parameters of a trace query.
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
}
// OperationQueryParameters contains parameters of query operations, empty spanKind means get operations for all kinds of span.
type OperationQueryParameters struct {
ServiceName string
SpanKind string
}
// Operation contains operation name and span kind
type Operation struct {
Name string
SpanKind string
}