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exporter.go
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exporter.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:https://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 logzioexporter // import "github.com/open-telemetry/opentelemetry-collector-contrib/exporter/logzioexporter"
import (
"context"
"errors"
"fmt"
"github.com/hashicorp/go-hclog"
"github.com/jaegertracing/jaeger/model"
"github.com/logzio/jaeger-logzio/store"
"go.opentelemetry.io/collector/component"
"go.opentelemetry.io/collector/exporter/exporterhelper"
"go.opentelemetry.io/collector/model/pdata"
"github.com/open-telemetry/opentelemetry-collector-contrib/pkg/translator/jaeger"
)
const (
loggerName = "logzio-exporter"
)
// logzioExporter implements an OpenTelemetry trace exporter that exports all spans to Logz.io
type logzioExporter struct {
accountToken string
writer *store.LogzioSpanWriter
logger hclog.Logger
WriteSpanFunc func(ctx context.Context, span *model.Span) error
InternalTracesToJaegerTraces func(td pdata.Traces) ([]*model.Batch, error)
}
func newLogzioExporter(config *Config, params component.ExporterCreateSettings) (*logzioExporter, error) {
logger := hclog2ZapLogger{
Zap: params.Logger,
name: loggerName,
}
if config == nil {
return nil, errors.New("exporter config can't be null")
}
writerConfig := store.LogzioConfig{
Region: config.Region,
AccountToken: config.TracesToken,
CustomListenerURL: config.CustomEndpoint,
InMemoryQueue: true,
Compress: true,
InMemoryCapacity: uint64(config.QueueCapacity),
LogCountLimit: config.QueueMaxLength,
DrainInterval: config.DrainInterval,
}
spanWriter, err := store.NewLogzioSpanWriter(writerConfig, &logger)
if err != nil {
return nil, err
}
return &logzioExporter{
writer: spanWriter,
accountToken: config.TracesToken,
logger: &logger,
InternalTracesToJaegerTraces: jaeger.ProtoFromTraces,
WriteSpanFunc: spanWriter.WriteSpan,
}, nil
}
func newLogzioTracesExporter(config *Config, set component.ExporterCreateSettings) (component.TracesExporter, error) {
exporter, err := newLogzioExporter(config, set)
if err != nil {
return nil, err
}
if err := config.validate(); err != nil {
return nil, err
}
return exporterhelper.NewTracesExporter(
config,
set,
exporter.pushTraceData,
exporterhelper.WithShutdown(exporter.Shutdown))
}
func newLogzioMetricsExporter(config *Config, set component.ExporterCreateSettings) (component.MetricsExporter, error) {
exporter, _ := newLogzioExporter(config, set)
return exporterhelper.NewMetricsExporter(
config,
set,
exporter.pushMetricsData,
exporterhelper.WithShutdown(exporter.Shutdown))
}
func (exporter *logzioExporter) pushTraceData(ctx context.Context, traces pdata.Traces) error {
batches, err := exporter.InternalTracesToJaegerTraces(traces)
if err != nil {
return err
}
for _, batch := range batches {
for _, span := range batch.Spans {
span.Process = batch.Process
if err := exporter.WriteSpanFunc(ctx, span); err != nil {
exporter.logger.Debug(fmt.Sprintf("dropped bad span: %s", span.String()))
}
}
}
return nil
}
func (exporter *logzioExporter) pushMetricsData(ctx context.Context, md pdata.Metrics) error {
return nil
}
func (exporter *logzioExporter) Shutdown(ctx context.Context) error {
exporter.logger.Info("Closing logzio exporter..")
exporter.writer.Close()
return nil
}