115 lines
5 KiB
Go
115 lines
5 KiB
Go
package jaeger
|
|
|
|
import (
|
|
"fmt"
|
|
"io"
|
|
|
|
"github.com/opentracing/opentracing-go"
|
|
"github.com/traefik/traefik/v2/pkg/log"
|
|
jaegercli "github.com/uber/jaeger-client-go"
|
|
jaegercfg "github.com/uber/jaeger-client-go/config"
|
|
"github.com/uber/jaeger-client-go/zipkin"
|
|
jaegermet "github.com/uber/jaeger-lib/metrics"
|
|
)
|
|
|
|
// Name sets the name of this tracer.
|
|
const Name = "jaeger"
|
|
|
|
// Config provides configuration settings for a jaeger tracer.
|
|
type Config struct {
|
|
SamplingServerURL string `description:"Set the sampling server url." json:"samplingServerURL,omitempty" toml:"samplingServerURL,omitempty" yaml:"samplingServerURL,omitempty"`
|
|
SamplingType string `description:"Set the sampling type." json:"samplingType,omitempty" toml:"samplingType,omitempty" yaml:"samplingType,omitempty" export:"true"`
|
|
SamplingParam float64 `description:"Set the sampling parameter." json:"samplingParam,omitempty" toml:"samplingParam,omitempty" yaml:"samplingParam,omitempty" export:"true"`
|
|
LocalAgentHostPort string `description:"Set jaeger-agent's host:port that the reporter will used." json:"localAgentHostPort,omitempty" toml:"localAgentHostPort,omitempty" yaml:"localAgentHostPort,omitempty"`
|
|
Gen128Bit bool `description:"Generate 128 bit span IDs." json:"gen128Bit,omitempty" toml:"gen128Bit,omitempty" yaml:"gen128Bit,omitempty" export:"true"`
|
|
Propagation string `description:"Which propagation format to use (jaeger/b3)." json:"propagation,omitempty" toml:"propagation,omitempty" yaml:"propagation,omitempty" export:"true"`
|
|
TraceContextHeaderName string `description:"Set the header to use for the trace-id." json:"traceContextHeaderName,omitempty" toml:"traceContextHeaderName,omitempty" yaml:"traceContextHeaderName,omitempty" export:"true"`
|
|
Collector *Collector `description:"Define the collector information" json:"collector,omitempty" toml:"collector,omitempty" yaml:"collector,omitempty" export:"true"`
|
|
DisableAttemptReconnecting bool `description:"Disable the periodic re-resolution of the agent's hostname and reconnection if there was a change." json:"disableAttemptReconnecting,omitempty" toml:"disableAttemptReconnecting,omitempty" yaml:"disableAttemptReconnecting,omitempty" export:"true"`
|
|
}
|
|
|
|
// SetDefaults sets the default values.
|
|
func (c *Config) SetDefaults() {
|
|
c.SamplingServerURL = "http://localhost:5778/sampling"
|
|
c.SamplingType = "const"
|
|
c.SamplingParam = 1.0
|
|
c.LocalAgentHostPort = "127.0.0.1:6831"
|
|
c.Propagation = "jaeger"
|
|
c.Gen128Bit = false
|
|
c.TraceContextHeaderName = jaegercli.TraceContextHeaderName
|
|
c.DisableAttemptReconnecting = true
|
|
}
|
|
|
|
// Collector provides configuration settings for jaeger collector.
|
|
type Collector struct {
|
|
Endpoint string `description:"Instructs reporter to send spans to jaeger-collector at this URL." json:"endpoint,omitempty" toml:"endpoint,omitempty" yaml:"endpoint,omitempty" export:"true"`
|
|
User string `description:"User for basic http authentication when sending spans to jaeger-collector." json:"user,omitempty" toml:"user,omitempty" yaml:"user,omitempty"`
|
|
Password string `description:"Password for basic http authentication when sending spans to jaeger-collector." json:"password,omitempty" toml:"password,omitempty" yaml:"password,omitempty"`
|
|
}
|
|
|
|
// SetDefaults sets the default values.
|
|
func (c *Collector) SetDefaults() {
|
|
c.Endpoint = ""
|
|
c.User = ""
|
|
c.Password = ""
|
|
}
|
|
|
|
// Setup sets up the tracer.
|
|
func (c *Config) Setup(componentName string) (opentracing.Tracer, io.Closer, error) {
|
|
reporter := &jaegercfg.ReporterConfig{
|
|
LogSpans: true,
|
|
LocalAgentHostPort: c.LocalAgentHostPort,
|
|
DisableAttemptReconnecting: c.DisableAttemptReconnecting,
|
|
}
|
|
|
|
if c.Collector != nil {
|
|
reporter.CollectorEndpoint = c.Collector.Endpoint
|
|
reporter.User = c.Collector.User
|
|
reporter.Password = c.Collector.Password
|
|
}
|
|
|
|
jcfg := jaegercfg.Configuration{
|
|
Sampler: &jaegercfg.SamplerConfig{
|
|
SamplingServerURL: c.SamplingServerURL,
|
|
Type: c.SamplingType,
|
|
Param: c.SamplingParam,
|
|
},
|
|
Reporter: reporter,
|
|
Headers: &jaegercli.HeadersConfig{
|
|
TraceContextHeaderName: c.TraceContextHeaderName,
|
|
},
|
|
}
|
|
|
|
jMetricsFactory := jaegermet.NullFactory
|
|
|
|
opts := []jaegercfg.Option{
|
|
jaegercfg.Logger(newJaegerLogger()),
|
|
jaegercfg.Metrics(jMetricsFactory),
|
|
jaegercfg.Gen128Bit(c.Gen128Bit),
|
|
}
|
|
|
|
switch c.Propagation {
|
|
case "b3":
|
|
p := zipkin.NewZipkinB3HTTPHeaderPropagator()
|
|
opts = append(opts,
|
|
jaegercfg.Injector(opentracing.HTTPHeaders, p),
|
|
jaegercfg.Extractor(opentracing.HTTPHeaders, p),
|
|
)
|
|
case "jaeger", "":
|
|
default:
|
|
return nil, nil, fmt.Errorf("unknown propagation format: %s", c.Propagation)
|
|
}
|
|
|
|
// Initialize tracer with a logger and a metrics factory
|
|
closer, err := jcfg.InitGlobalTracer(
|
|
componentName,
|
|
opts...,
|
|
)
|
|
if err != nil {
|
|
log.WithoutContext().Warnf("Could not initialize jaeger tracer: %s", err.Error())
|
|
return nil, nil, err
|
|
}
|
|
log.WithoutContext().Debug("Jaeger tracer configured")
|
|
|
|
return opentracing.GlobalTracer(), closer, nil
|
|
}
|