/
receivers.go
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/
receivers.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 testbed
import (
"context"
"fmt"
"log"
"time"
"github.com/prometheus/common/model"
promconfig "github.com/prometheus/prometheus/config"
"github.com/prometheus/prometheus/discovery"
"go.opentelemetry.io/collector/component"
"go.opentelemetry.io/collector/component/componenttest"
"go.opentelemetry.io/collector/config"
"go.opentelemetry.io/collector/config/configgrpc"
"go.opentelemetry.io/collector/config/confignet"
"go.opentelemetry.io/collector/consumer"
"go.opentelemetry.io/collector/receiver/jaegerreceiver"
"go.opentelemetry.io/collector/receiver/opencensusreceiver"
"go.opentelemetry.io/collector/receiver/otlpreceiver"
"go.opentelemetry.io/collector/receiver/prometheusreceiver"
"go.opentelemetry.io/collector/receiver/zipkinreceiver"
)
// DataReceiver allows to receive traces or metrics. This is an interface that must
// be implemented by all protocols that want to be used in MockBackend.
// Note the terminology: testbed.DataReceiver is something that can listen and receive data
// from Collector and the corresponding entity in the Collector that sends this data is
// an exporter.
type DataReceiver interface {
Start(tc consumer.Traces, mc consumer.Metrics, lc consumer.Logs) error
Stop() error
// GenConfigYAMLStr generates a config string to place in exporter part of collector config
// so that it can send data to this receiver.
GenConfigYAMLStr() string
// ProtocolName returns exporterType name to use in collector config pipeline.
ProtocolName() string
}
// DataReceiverBase implement basic functions needed by all receivers.
type DataReceiverBase struct {
// Port on which to listen.
Port int
}
const DefaultHost = "127.0.0.1"
func (mb *DataReceiverBase) ReportFatalError(err error) {
log.Printf("Fatal error reported: %v", err)
}
func (mb *DataReceiverBase) GetFactory(_ component.Kind, _ config.Type) component.Factory {
return nil
}
func (mb *DataReceiverBase) GetExtensions() map[config.ComponentID]component.Extension {
return nil
}
func (mb *DataReceiverBase) GetExporters() map[config.DataType]map[config.ComponentID]component.Exporter {
return nil
}
// ocDataReceiver implements OpenCensus format receiver.
type ocDataReceiver struct {
DataReceiverBase
traceReceiver component.TracesReceiver
metricsReceiver component.MetricsReceiver
}
const DefaultOCPort = 56565
// NewOCDataReceiver creates a new ocDataReceiver that will listen on the specified port after Start
// is called.
func NewOCDataReceiver(port int) DataReceiver {
return &ocDataReceiver{DataReceiverBase: DataReceiverBase{Port: port}}
}
func (or *ocDataReceiver) Start(tc consumer.Traces, mc consumer.Metrics, _ consumer.Logs) error {
factory := opencensusreceiver.NewFactory()
cfg := factory.CreateDefaultConfig().(*opencensusreceiver.Config)
cfg.NetAddr = confignet.NetAddr{Endpoint: fmt.Sprintf("localhost:%d", or.Port), Transport: "tcp"}
var err error
set := componenttest.NewNopReceiverCreateSettings()
if or.traceReceiver, err = factory.CreateTracesReceiver(context.Background(), set, cfg, tc); err != nil {
return err
}
if or.metricsReceiver, err = factory.CreateMetricsReceiver(context.Background(), set, cfg, mc); err != nil {
return err
}
if err = or.traceReceiver.Start(context.Background(), or); err != nil {
return err
}
return or.metricsReceiver.Start(context.Background(), or)
}
func (or *ocDataReceiver) Stop() error {
if err := or.traceReceiver.Shutdown(context.Background()); err != nil {
return err
}
return or.metricsReceiver.Shutdown(context.Background())
}
func (or *ocDataReceiver) GenConfigYAMLStr() string {
// Note that this generates an exporter config for agent.
return fmt.Sprintf(`
opencensus:
endpoint: "localhost:%d"
insecure: true`, or.Port)
}
func (or *ocDataReceiver) ProtocolName() string {
return "opencensus"
}
// jaegerDataReceiver implements Jaeger format receiver.
type jaegerDataReceiver struct {
DataReceiverBase
receiver component.TracesReceiver
}
const DefaultJaegerPort = 14250
// NewJaegerDataReceiver creates a new Jaeger DataReceiver that will listen on the specified port after Start
// is called.
func NewJaegerDataReceiver(port int) DataReceiver {
return &jaegerDataReceiver{DataReceiverBase: DataReceiverBase{Port: port}}
}
func (jr *jaegerDataReceiver) Start(tc consumer.Traces, _ consumer.Metrics, _ consumer.Logs) error {
factory := jaegerreceiver.NewFactory()
cfg := factory.CreateDefaultConfig().(*jaegerreceiver.Config)
cfg.Protocols.GRPC = &configgrpc.GRPCServerSettings{
NetAddr: confignet.NetAddr{Endpoint: fmt.Sprintf("localhost:%d", jr.Port), Transport: "tcp"},
}
var err error
set := componenttest.NewNopReceiverCreateSettings()
jr.receiver, err = factory.CreateTracesReceiver(context.Background(), set, cfg, tc)
if err != nil {
return err
}
return jr.receiver.Start(context.Background(), jr)
}
func (jr *jaegerDataReceiver) Stop() error {
return jr.receiver.Shutdown(context.Background())
}
func (jr *jaegerDataReceiver) GenConfigYAMLStr() string {
// Note that this generates an exporter config for agent.
return fmt.Sprintf(`
jaeger:
endpoint: "localhost:%d"
insecure: true`, jr.Port)
}
func (jr *jaegerDataReceiver) ProtocolName() string {
return "jaeger"
}
// BaseOTLPDataReceiver implements the OTLP format receiver.
type BaseOTLPDataReceiver struct {
DataReceiverBase
// One of the "otlp" for OTLP over gRPC or "otlphttp" for OTLP over HTTP.
exporterType string
traceReceiver component.TracesReceiver
metricsReceiver component.MetricsReceiver
logReceiver component.LogsReceiver
compression string
}
func (bor *BaseOTLPDataReceiver) Start(tc consumer.Traces, mc consumer.Metrics, lc consumer.Logs) error {
factory := otlpreceiver.NewFactory()
cfg := factory.CreateDefaultConfig().(*otlpreceiver.Config)
if bor.exporterType == "otlp" {
cfg.GRPC.NetAddr = confignet.NetAddr{Endpoint: fmt.Sprintf("localhost:%d", bor.Port), Transport: "tcp"}
cfg.HTTP = nil
} else {
cfg.HTTP.Endpoint = fmt.Sprintf("localhost:%d", bor.Port)
cfg.GRPC = nil
}
var err error
set := componenttest.NewNopReceiverCreateSettings()
if bor.traceReceiver, err = factory.CreateTracesReceiver(context.Background(), set, cfg, tc); err != nil {
return err
}
if bor.metricsReceiver, err = factory.CreateMetricsReceiver(context.Background(), set, cfg, mc); err != nil {
return err
}
if bor.logReceiver, err = factory.CreateLogsReceiver(context.Background(), set, cfg, lc); err != nil {
return err
}
if err = bor.traceReceiver.Start(context.Background(), bor); err != nil {
return err
}
if err = bor.metricsReceiver.Start(context.Background(), bor); err != nil {
return err
}
return bor.logReceiver.Start(context.Background(), bor)
}
func (bor *BaseOTLPDataReceiver) WithCompression(compression string) *BaseOTLPDataReceiver {
bor.compression = compression
return bor
}
func (bor *BaseOTLPDataReceiver) Stop() error {
if err := bor.traceReceiver.Shutdown(context.Background()); err != nil {
return err
}
if err := bor.metricsReceiver.Shutdown(context.Background()); err != nil {
return err
}
return bor.logReceiver.Shutdown(context.Background())
}
func (bor *BaseOTLPDataReceiver) ProtocolName() string {
return bor.exporterType
}
func (bor *BaseOTLPDataReceiver) GenConfigYAMLStr() string {
addr := fmt.Sprintf("localhost:%d", bor.Port)
if bor.exporterType == "otlphttp" {
addr = "http://" + addr
}
// Note that this generates an exporter config for agent.
str := fmt.Sprintf(`
%s:
endpoint: "%s"
insecure: true`, bor.exporterType, addr)
if bor.compression != "" {
str += fmt.Sprintf(`
compression: "%s"`, bor.compression)
}
return str
}
const DefaultOTLPPort = 4317
var _ DataReceiver = (*BaseOTLPDataReceiver)(nil)
// NewOTLPDataReceiver creates a new OTLP DataReceiver that will listen on the specified port after Start
// is called.
func NewOTLPDataReceiver(port int) *BaseOTLPDataReceiver {
return &BaseOTLPDataReceiver{
DataReceiverBase: DataReceiverBase{Port: port},
exporterType: "otlp",
}
}
// NewOTLPHTTPDataReceiver creates a new OTLP/HTTP DataReceiver that will listen on the specified port after Start
// is called.
func NewOTLPHTTPDataReceiver(port int) *BaseOTLPDataReceiver {
return &BaseOTLPDataReceiver{
DataReceiverBase: DataReceiverBase{Port: port},
exporterType: "otlphttp",
}
}
// zipkinDataReceiver implements Zipkin format receiver.
type zipkinDataReceiver struct {
DataReceiverBase
receiver component.TracesReceiver
}
// NewZipkinDataReceiver creates a new Zipkin DataReceiver that will listen on the specified port after Start
// is called.
func NewZipkinDataReceiver(port int) DataReceiver {
return &zipkinDataReceiver{DataReceiverBase: DataReceiverBase{Port: port}}
}
func (zr *zipkinDataReceiver) Start(tc consumer.Traces, _ consumer.Metrics, _ consumer.Logs) error {
factory := zipkinreceiver.NewFactory()
cfg := factory.CreateDefaultConfig().(*zipkinreceiver.Config)
cfg.Endpoint = fmt.Sprintf("localhost:%d", zr.Port)
set := componenttest.NewNopReceiverCreateSettings()
var err error
zr.receiver, err = factory.CreateTracesReceiver(context.Background(), set, cfg, tc)
if err != nil {
return err
}
return zr.receiver.Start(context.Background(), zr)
}
func (zr *zipkinDataReceiver) Stop() error {
return zr.receiver.Shutdown(context.Background())
}
func (zr *zipkinDataReceiver) GenConfigYAMLStr() string {
// Note that this generates an exporter config for agent.
return fmt.Sprintf(`
zipkin:
endpoint: http://localhost:%d/api/v2/spans
format: json`, zr.Port)
}
func (zr *zipkinDataReceiver) ProtocolName() string {
return "zipkin"
}
// prometheus
type prometheusDataReceiver struct {
DataReceiverBase
receiver component.MetricsReceiver
}
func NewPrometheusDataReceiver(port int) DataReceiver {
return &prometheusDataReceiver{DataReceiverBase: DataReceiverBase{Port: port}}
}
func (dr *prometheusDataReceiver) Start(_ consumer.Traces, mc consumer.Metrics, _ consumer.Logs) error {
factory := prometheusreceiver.NewFactory()
cfg := factory.CreateDefaultConfig().(*prometheusreceiver.Config)
addr := fmt.Sprintf("0.0.0.0:%d", dr.Port)
cfg.PrometheusConfig = &promconfig.Config{
ScrapeConfigs: []*promconfig.ScrapeConfig{{
JobName: "testbed-job",
ScrapeInterval: model.Duration(100 * time.Millisecond),
ScrapeTimeout: model.Duration(time.Second),
ServiceDiscoveryConfigs: discovery.Configs{
&discovery.StaticConfig{
{
Targets: []model.LabelSet{{
"__address__": model.LabelValue(addr),
"__scheme__": "http",
"__metrics_path__": "/metrics",
}},
},
},
},
}},
}
var err error
set := componenttest.NewNopReceiverCreateSettings()
dr.receiver, err = factory.CreateMetricsReceiver(context.Background(), set, cfg, mc)
if err != nil {
return err
}
return dr.receiver.Start(context.Background(), dr)
}
func (dr *prometheusDataReceiver) Stop() error {
return dr.receiver.Shutdown(context.Background())
}
func (dr *prometheusDataReceiver) GenConfigYAMLStr() string {
format := `
prometheus:
endpoint: "localhost:%d"
`
return fmt.Sprintf(format, dr.Port)
}
func (dr *prometheusDataReceiver) ProtocolName() string {
return "prometheus"
}