/
traces.go
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/
traces.go
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// 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 exporterhelper // import "go.opentelemetry.io/collector/exporter/exporterhelper"
import (
"context"
"errors"
"go.opentelemetry.io/collector/component"
"go.opentelemetry.io/collector/consumer"
"go.opentelemetry.io/collector/consumer/consumererror"
"go.opentelemetry.io/collector/exporter"
"go.opentelemetry.io/collector/exporter/exporterhelper/internal"
"go.opentelemetry.io/collector/pdata/ptrace"
)
var tracesMarshaler = &ptrace.ProtoMarshaler{}
var tracesUnmarshaler = &ptrace.ProtoUnmarshaler{}
type tracesRequest struct {
baseRequest
td ptrace.Traces
pusher consumer.ConsumeTracesFunc
}
func newTracesRequest(ctx context.Context, td ptrace.Traces, pusher consumer.ConsumeTracesFunc) internal.Request {
return &tracesRequest{
baseRequest: baseRequest{ctx: ctx},
td: td,
pusher: pusher,
}
}
func newTraceRequestUnmarshalerFunc(pusher consumer.ConsumeTracesFunc) internal.RequestUnmarshaler {
return func(bytes []byte) (internal.Request, error) {
traces, err := tracesUnmarshaler.UnmarshalTraces(bytes)
if err != nil {
return nil, err
}
return newTracesRequest(context.Background(), traces, pusher), nil
}
}
// Marshal provides serialization capabilities required by persistent queue
func (req *tracesRequest) Marshal() ([]byte, error) {
return tracesMarshaler.MarshalTraces(req.td)
}
func (req *tracesRequest) OnError(err error) internal.Request {
var traceError consumererror.Traces
if errors.As(err, &traceError) {
return newTracesRequest(req.ctx, traceError.GetTraces(), req.pusher)
}
return req
}
func (req *tracesRequest) Export(ctx context.Context) error {
return req.pusher(ctx, req.td)
}
func (req *tracesRequest) Count() int {
return req.td.SpanCount()
}
type traceExporter struct {
*baseExporter
consumer.Traces
}
// NewTracesExporter creates a exporter.Traces that records observability metrics and wraps every request with a Span.
func NewTracesExporter(
_ context.Context,
set exporter.CreateSettings,
cfg component.Config,
pusher consumer.ConsumeTracesFunc,
options ...Option,
) (exporter.Traces, error) {
if cfg == nil {
return nil, errNilConfig
}
if set.Logger == nil {
return nil, errNilLogger
}
if pusher == nil {
return nil, errNilPushTraceData
}
bs := fromOptions(options...)
be, err := newBaseExporter(set, bs, component.DataTypeTraces, newTraceRequestUnmarshalerFunc(pusher))
if err != nil {
return nil, err
}
be.wrapConsumerSender(func(nextSender requestSender) requestSender {
return &tracesExporterWithObservability{
obsrep: be.obsrep,
nextSender: nextSender,
}
})
tc, err := consumer.NewTraces(func(ctx context.Context, td ptrace.Traces) error {
req := newTracesRequest(ctx, td, pusher)
serr := be.sender.send(req)
if errors.Is(serr, errSendingQueueIsFull) {
be.obsrep.recordTracesEnqueueFailure(req.Context(), int64(req.Count()))
}
return serr
}, bs.consumerOptions...)
return &traceExporter{
baseExporter: be,
Traces: tc,
}, err
}
type tracesExporterWithObservability struct {
obsrep *obsExporter
nextSender requestSender
}
func (tewo *tracesExporterWithObservability) send(req internal.Request) error {
req.SetContext(tewo.obsrep.StartTracesOp(req.Context()))
// Forward the data to the next consumer (this pusher is the next).
err := tewo.nextSender.send(req)
tewo.obsrep.EndTracesOp(req.Context(), req.Count(), err)
return err
}