mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2024-11-27 14:16:39 +00:00
73 lines
2.8 KiB
Go
73 lines
2.8 KiB
Go
// Copyright The OpenTelemetry Authors
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package trace // import "go.opentelemetry.io/otel/sdk/trace"
|
|
|
|
import (
|
|
"context"
|
|
"sync"
|
|
)
|
|
|
|
// SpanProcessor is a processing pipeline for spans in the trace signal.
|
|
// SpanProcessors registered with a TracerProvider and are called at the start
|
|
// and end of a Span's lifecycle, and are called in the order they are
|
|
// registered.
|
|
type SpanProcessor interface {
|
|
// DO NOT CHANGE: any modification will not be backwards compatible and
|
|
// must never be done outside of a new major release.
|
|
|
|
// OnStart is called when a span is started. It is called synchronously
|
|
// and should not block.
|
|
OnStart(parent context.Context, s ReadWriteSpan)
|
|
// DO NOT CHANGE: any modification will not be backwards compatible and
|
|
// must never be done outside of a new major release.
|
|
|
|
// OnEnd is called when span is finished. It is called synchronously and
|
|
// hence not block.
|
|
OnEnd(s ReadOnlySpan)
|
|
// DO NOT CHANGE: any modification will not be backwards compatible and
|
|
// must never be done outside of a new major release.
|
|
|
|
// Shutdown is called when the SDK shuts down. Any cleanup or release of
|
|
// resources held by the processor should be done in this call.
|
|
//
|
|
// Calls to OnStart, OnEnd, or ForceFlush after this has been called
|
|
// should be ignored.
|
|
//
|
|
// All timeouts and cancellations contained in ctx must be honored, this
|
|
// should not block indefinitely.
|
|
Shutdown(ctx context.Context) error
|
|
// DO NOT CHANGE: any modification will not be backwards compatible and
|
|
// must never be done outside of a new major release.
|
|
|
|
// ForceFlush exports all ended spans to the configured Exporter that have not yet
|
|
// been exported. It should only be called when absolutely necessary, such as when
|
|
// using a FaaS provider that may suspend the process after an invocation, but before
|
|
// the Processor can export the completed spans.
|
|
ForceFlush(ctx context.Context) error
|
|
// DO NOT CHANGE: any modification will not be backwards compatible and
|
|
// must never be done outside of a new major release.
|
|
}
|
|
|
|
type spanProcessorState struct {
|
|
sp SpanProcessor
|
|
state sync.Once
|
|
}
|
|
|
|
func newSpanProcessorState(sp SpanProcessor) *spanProcessorState {
|
|
return &spanProcessorState{sp: sp}
|
|
}
|
|
|
|
type spanProcessorStates []*spanProcessorState
|