forked from mirror/redis
86 lines
1.8 KiB
Go
86 lines
1.8 KiB
Go
package main
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import (
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"context"
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"log"
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"sync"
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"time"
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"github.com/go-redis/redis/v8"
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"github.com/go-redis/redis/v8/extra/redisotel"
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"go.opentelemetry.io/otel"
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"go.opentelemetry.io/otel/exporters/stdout"
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controller "go.opentelemetry.io/otel/sdk/metric/controller/basic"
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processor "go.opentelemetry.io/otel/sdk/metric/processor/basic"
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"go.opentelemetry.io/otel/sdk/metric/selector/simple"
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sdktrace "go.opentelemetry.io/otel/sdk/trace"
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)
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func main() {
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ctx := context.Background()
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stop := runExporter(ctx)
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defer stop(ctx)
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rdb := redis.NewClient(&redis.Options{
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Addr: ":6379",
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})
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rdb.AddHook(redisotel.TracingHook{})
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tracer := otel.Tracer("Example tracer")
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ctx, span := tracer.Start(ctx, "start-test-span")
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rdb.Set(ctx, "First value", "value_1", 0)
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rdb.Set(ctx, "Second value", "value_2", 0)
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var group sync.WaitGroup
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for i := 0; i < 20; i++ {
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group.Add(1)
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go func() {
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defer group.Done()
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val := rdb.Get(ctx, "Second value").Val()
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if val != "value_2" {
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log.Fatalf("val was not set. expected: %s but got: %s", "value_2", val)
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}
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}()
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}
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group.Wait()
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rdb.Del(ctx, "First value")
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rdb.Del(ctx, "Second value")
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// Wait some time to allow spans to export
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<-time.After(5 * time.Second)
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span.End()
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}
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func runExporter(ctx context.Context) func(context.Context) error {
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exporter, err := stdout.NewExporter(stdout.WithPrettyPrint())
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if err != nil {
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log.Fatal(err)
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}
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tp := sdktrace.NewTracerProvider(
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sdktrace.WithSyncer(exporter),
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sdktrace.WithConfig(sdktrace.Config{DefaultSampler: sdktrace.AlwaysSample()}),
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)
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otel.SetTracerProvider(tp)
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ctrl := controller.New(
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processor.New(
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simple.NewWithExactDistribution(),
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exporter,
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),
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controller.WithPusher(exporter),
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controller.WithCollectPeriod(1*time.Second),
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)
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if err := ctrl.Start(ctx); err != nil {
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log.Fatal(err)
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}
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return ctrl.Stop
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}
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