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factory.go
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factory.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 datadogexporter // import "github.com/open-telemetry/opentelemetry-collector-contrib/exporter/datadogexporter"
import (
"context"
"os"
"time"
"go.opentelemetry.io/collector/component"
"go.opentelemetry.io/collector/config"
"go.opentelemetry.io/collector/config/confignet"
"go.opentelemetry.io/collector/consumer/consumerhelper"
"go.opentelemetry.io/collector/exporter/exporterhelper"
"go.opentelemetry.io/collector/model/pdata"
ddconfig "github.com/open-telemetry/opentelemetry-collector-contrib/exporter/datadogexporter/config"
"github.com/open-telemetry/opentelemetry-collector-contrib/exporter/datadogexporter/internal/metadata"
"github.com/open-telemetry/opentelemetry-collector-contrib/pkg/resourcetotelemetry"
)
const (
// typeStr is the type of the exporter
typeStr = "datadog"
)
// NewFactory creates a Datadog exporter factory
func NewFactory() component.ExporterFactory {
return component.NewExporterFactory(
typeStr,
createDefaultConfig,
component.WithMetricsExporter(createMetricsExporter),
component.WithTracesExporter(createTracesExporter),
)
}
func defaulttimeoutSettings() exporterhelper.TimeoutSettings {
return exporterhelper.TimeoutSettings{
Timeout: 15 * time.Second,
}
}
// createDefaultConfig creates the default exporter configuration
func createDefaultConfig() config.Exporter {
return &ddconfig.Config{
ExporterSettings: config.NewExporterSettings(config.NewComponentID(typeStr)),
TimeoutSettings: defaulttimeoutSettings(),
RetrySettings: exporterhelper.NewDefaultRetrySettings(),
QueueSettings: exporterhelper.NewDefaultQueueSettings(),
API: ddconfig.APIConfig{
Key: os.Getenv("DD_API_KEY"), // Must be set if using API
Site: os.Getenv("DD_SITE"), // If not provided, set during config sanitization
},
TagsConfig: ddconfig.TagsConfig{
Hostname: os.Getenv("DD_HOST"),
Env: os.Getenv("DD_ENV"),
Service: os.Getenv("DD_SERVICE"),
Version: os.Getenv("DD_VERSION"),
EnvVarTags: os.Getenv("DD_TAGS"), // Only taken into account if Tags is not set
},
Metrics: ddconfig.MetricsConfig{
TCPAddr: confignet.TCPAddr{
Endpoint: os.Getenv("DD_URL"), // If not provided, set during config sanitization
},
SendMonotonic: true,
DeltaTTL: 3600,
Quantiles: true,
ExporterConfig: ddconfig.MetricsExporterConfig{
ResourceAttributesAsTags: false,
InstrumentationLibraryMetadataAsTags: false,
},
HistConfig: ddconfig.HistogramConfig{
Mode: "distributions",
SendCountSum: false,
},
},
Traces: ddconfig.TracesConfig{
SampleRate: 1,
TCPAddr: confignet.TCPAddr{
Endpoint: os.Getenv("DD_APM_URL"), // If not provided, set during config sanitization
},
IgnoreResources: []string{},
},
SendMetadata: true,
UseResourceMetadata: true,
}
}
// createMetricsExporter creates a metrics exporter based on this config.
func createMetricsExporter(
ctx context.Context,
set component.ExporterCreateSettings,
c config.Exporter,
) (component.MetricsExporter, error) {
cfg := c.(*ddconfig.Config)
set.Logger.Info("sanitizing Datadog metrics exporter configuration")
if err := cfg.Sanitize(set.Logger); err != nil {
return nil, err
}
ctx, cancel := context.WithCancel(ctx)
var pushMetricsFn consumerhelper.ConsumeMetricsFunc
if cfg.OnlyMetadata {
pushMetricsFn = func(_ context.Context, md pdata.Metrics) error {
// only sending metadata use only metrics
once := cfg.OnceMetadata()
once.Do(func() {
attrs := pdata.NewAttributeMap()
if md.ResourceMetrics().Len() > 0 {
attrs = md.ResourceMetrics().At(0).Resource().Attributes()
}
go metadata.Pusher(ctx, set, newMetadataConfigfromConfig(cfg), attrs)
})
return nil
}
} else {
exp, err := newMetricsExporter(ctx, set, cfg)
if err != nil {
cancel()
return nil, err
}
pushMetricsFn = exp.PushMetricsDataScrubbed
}
exporter, err := exporterhelper.NewMetricsExporter(
cfg,
set,
pushMetricsFn,
// explicitly disable since we rely on http.Client timeout logic.
exporterhelper.WithTimeout(exporterhelper.TimeoutSettings{Timeout: 0 * time.Second}),
// We use our own custom mechanism for retries, since we hit several endpoints.
exporterhelper.WithRetry(exporterhelper.RetrySettings{Enabled: false}),
exporterhelper.WithQueue(cfg.QueueSettings),
exporterhelper.WithShutdown(func(context.Context) error {
cancel()
return nil
}),
)
if err != nil {
return nil, err
}
return resourcetotelemetry.WrapMetricsExporter(
resourcetotelemetry.Settings{Enabled: cfg.Metrics.ExporterConfig.ResourceAttributesAsTags}, exporter), nil
}
// createTracesExporter creates a trace exporter based on this config.
func createTracesExporter(
ctx context.Context,
set component.ExporterCreateSettings,
c config.Exporter,
) (component.TracesExporter, error) {
cfg := c.(*ddconfig.Config)
set.Logger.Info("sanitizing Datadog traces exporter configuration")
if err := cfg.Sanitize(set.Logger); err != nil {
return nil, err
}
ctx, cancel := context.WithCancel(ctx)
var pushTracesFn consumerhelper.ConsumeTracesFunc
if cfg.OnlyMetadata {
pushTracesFn = func(_ context.Context, td pdata.Traces) error {
// only sending metadata, use only attributes
once := cfg.OnceMetadata()
once.Do(func() {
attrs := pdata.NewAttributeMap()
if td.ResourceSpans().Len() > 0 {
attrs = td.ResourceSpans().At(0).Resource().Attributes()
}
go metadata.Pusher(ctx, set, newMetadataConfigfromConfig(cfg), attrs)
})
return nil
}
} else {
pushTracesFn = newTracesExporter(ctx, set, cfg).pushTraceDataScrubbed
}
return exporterhelper.NewTracesExporter(
cfg,
set,
pushTracesFn,
// explicitly disable since we rely on http.Client timeout logic.
exporterhelper.WithTimeout(exporterhelper.TimeoutSettings{Timeout: 0 * time.Second}),
// We don't do retries on traces because of deduping concerns on APM Events.
exporterhelper.WithRetry(exporterhelper.RetrySettings{Enabled: false}),
exporterhelper.WithQueue(cfg.QueueSettings),
exporterhelper.WithShutdown(func(context.Context) error {
cancel()
return nil
}),
)
}