mirror of https://github.com/go-redis/redis.git
80 lines
1.8 KiB
Go
80 lines
1.8 KiB
Go
package redisotel
|
|
|
|
import (
|
|
"context"
|
|
|
|
"go.opentelemetry.io/otel"
|
|
"go.opentelemetry.io/otel/attribute"
|
|
"go.opentelemetry.io/otel/codes"
|
|
"go.opentelemetry.io/otel/trace"
|
|
|
|
"github.com/go-redis/redis/extra/rediscmd/v8"
|
|
"github.com/go-redis/redis/v8"
|
|
)
|
|
|
|
var tracer = otel.Tracer("github.com/go-redis/redis")
|
|
|
|
type TracingHook struct{}
|
|
|
|
var _ redis.Hook = (*TracingHook)(nil)
|
|
|
|
func NewTracingHook() *TracingHook {
|
|
return new(TracingHook)
|
|
}
|
|
|
|
func (TracingHook) BeforeProcess(ctx context.Context, cmd redis.Cmder) (context.Context, error) {
|
|
if !trace.SpanFromContext(ctx).IsRecording() {
|
|
return ctx, nil
|
|
}
|
|
|
|
ctx, span := tracer.Start(ctx, cmd.FullName())
|
|
span.SetAttributes(
|
|
attribute.String("db.system", "redis"),
|
|
attribute.String("db.statement", rediscmd.CmdString(cmd)),
|
|
)
|
|
|
|
return ctx, nil
|
|
}
|
|
|
|
func (TracingHook) AfterProcess(ctx context.Context, cmd redis.Cmder) error {
|
|
span := trace.SpanFromContext(ctx)
|
|
if err := cmd.Err(); err != nil {
|
|
recordError(ctx, span, err)
|
|
}
|
|
span.End()
|
|
return nil
|
|
}
|
|
|
|
func (TracingHook) BeforeProcessPipeline(ctx context.Context, cmds []redis.Cmder) (context.Context, error) {
|
|
if !trace.SpanFromContext(ctx).IsRecording() {
|
|
return ctx, nil
|
|
}
|
|
|
|
summary, cmdsString := rediscmd.CmdsString(cmds)
|
|
|
|
ctx, span := tracer.Start(ctx, "pipeline "+summary)
|
|
span.SetAttributes(
|
|
attribute.String("db.system", "redis"),
|
|
attribute.Int("db.redis.num_cmd", len(cmds)),
|
|
attribute.String("db.statement", cmdsString),
|
|
)
|
|
|
|
return ctx, nil
|
|
}
|
|
|
|
func (TracingHook) AfterProcessPipeline(ctx context.Context, cmds []redis.Cmder) error {
|
|
span := trace.SpanFromContext(ctx)
|
|
if err := cmds[0].Err(); err != nil {
|
|
recordError(ctx, span, err)
|
|
}
|
|
span.End()
|
|
return nil
|
|
}
|
|
|
|
func recordError(ctx context.Context, span trace.Span, err error) {
|
|
if err != redis.Nil {
|
|
span.RecordError(err)
|
|
span.SetStatus(codes.Error, err.Error())
|
|
}
|
|
}
|