forked from mirror/redis
51 lines
1.3 KiB
Go
51 lines
1.3 KiB
Go
package rediscensus
|
|
|
|
import (
|
|
"context"
|
|
|
|
"go.opencensus.io/trace"
|
|
|
|
"github.com/go-redis/redis/extra/rediscmd/v9"
|
|
"github.com/go-redis/redis/v9"
|
|
)
|
|
|
|
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) {
|
|
ctx, span := trace.StartSpan(ctx, cmd.FullName())
|
|
span.AddAttributes(trace.StringAttribute("db.system", "redis"),
|
|
trace.StringAttribute("redis.cmd", rediscmd.CmdString(cmd)))
|
|
|
|
return ctx, nil
|
|
}
|
|
|
|
func (TracingHook) AfterProcess(ctx context.Context, cmd redis.Cmder) error {
|
|
span := trace.FromContext(ctx)
|
|
if err := cmd.Err(); err != nil {
|
|
recordErrorOnOCSpan(ctx, span, err)
|
|
}
|
|
span.End()
|
|
return nil
|
|
}
|
|
|
|
func (TracingHook) BeforeProcessPipeline(ctx context.Context, cmds []redis.Cmder) (context.Context, error) {
|
|
return ctx, nil
|
|
}
|
|
|
|
func (TracingHook) AfterProcessPipeline(ctx context.Context, cmds []redis.Cmder) error {
|
|
return nil
|
|
}
|
|
|
|
func recordErrorOnOCSpan(ctx context.Context, span *trace.Span, err error) {
|
|
if err != redis.Nil {
|
|
span.AddAttributes(trace.BoolAttribute("error", true))
|
|
span.Annotate([]trace.Attribute{trace.StringAttribute("Error", "redis error")}, err.Error())
|
|
}
|
|
}
|