104 lines
2.4 KiB
Go
104 lines
2.4 KiB
Go
package tracing
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import (
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"io"
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"os"
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"strings"
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"time"
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"github.com/ethereum/go-ethereum/log"
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jaeger "github.com/uber/jaeger-client-go"
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jaegercfg "github.com/uber/jaeger-client-go/config"
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jaegerlog "github.com/uber/jaeger-client-go/log"
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cli "gopkg.in/urfave/cli.v1"
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)
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var Enabled bool = false
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// TracingEnabledFlag is the CLI flag name to use to enable trace collections.
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const TracingEnabledFlag = "tracing"
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var (
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Closer io.Closer
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)
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var (
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TracingFlag = cli.BoolFlag{
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Name: TracingEnabledFlag,
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Usage: "Enable tracing",
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}
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TracingEndpointFlag = cli.StringFlag{
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Name: "tracing.endpoint",
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Usage: "Tracing endpoint",
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Value: "0.0.0.0:6831",
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}
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TracingSvcFlag = cli.StringFlag{
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Name: "tracing.svc",
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Usage: "Tracing service name",
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Value: "swarm",
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}
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)
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// Flags holds all command-line flags required for tracing collection.
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var Flags = []cli.Flag{
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TracingFlag,
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TracingEndpointFlag,
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TracingSvcFlag,
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}
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// Init enables or disables the open tracing system.
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func init() {
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for _, arg := range os.Args {
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if flag := strings.TrimLeft(arg, "-"); flag == TracingEnabledFlag {
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Enabled = true
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}
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}
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}
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func Setup(ctx *cli.Context) {
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if Enabled {
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log.Info("Enabling opentracing")
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var (
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endpoint = ctx.GlobalString(TracingEndpointFlag.Name)
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svc = ctx.GlobalString(TracingSvcFlag.Name)
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)
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Closer = initTracer(endpoint, svc)
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}
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}
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func initTracer(endpoint, svc string) (closer io.Closer) {
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// Sample configuration for testing. Use constant sampling to sample every trace
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// and enable LogSpan to log every span via configured Logger.
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cfg := jaegercfg.Configuration{
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Sampler: &jaegercfg.SamplerConfig{
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Type: jaeger.SamplerTypeConst,
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Param: 1,
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},
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Reporter: &jaegercfg.ReporterConfig{
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LogSpans: true,
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BufferFlushInterval: 1 * time.Second,
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LocalAgentHostPort: endpoint,
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},
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}
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// Example logger and metrics factory. Use github.com/uber/jaeger-client-go/log
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// and github.com/uber/jaeger-lib/metrics respectively to bind to real logging and metrics
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// frameworks.
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jLogger := jaegerlog.StdLogger
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//jMetricsFactory := metrics.NullFactory
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// Initialize tracer with a logger and a metrics factory
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closer, err := cfg.InitGlobalTracer(
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svc,
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jaegercfg.Logger(jLogger),
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//jaegercfg.Metrics(jMetricsFactory),
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//jaegercfg.Observer(rpcmetrics.NewObserver(jMetricsFactory, rpcmetrics.DefaultNameNormalizer)),
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)
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if err != nil {
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log.Error("Could not initialize Jaeger tracer", "err", err)
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}
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return closer
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}
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