feat: mysql and redis metric support (#2355)

* feat: mysql and redis metric support

* feat: mysql and redis metric support

* feat: mysql and redis metric support

Co-authored-by: dawn.zhou <dawn.zhou@yijinin.com>

core/stores/redis/hook.go

@@ -56,6 +56,11 @@ func (h hook) AfterProcess(ctx context.Context, cmd red.Cmder) error {
 		logDuration(ctx, cmd, duration)
 	}
 
+	metricReqDur.Observe(int64(duration/time.Millisecond), cmd.Name())
+	if msg := errFormat(err); len(msg) > 0 {
+		metricReqErr.Inc(cmd.Name(), msg)
+	}
+
 	return nil
 }
 
@@ -98,9 +103,43 @@ func (h hook) AfterProcessPipeline(ctx context.Context, cmds []red.Cmder) error
 		logDuration(ctx, cmds[0], duration)
 	}
 
+	metricReqDur.Observe(int64(duration/time.Millisecond), "Pipeline")
+	if msg := errFormat(batchError.Err()); len(msg) > 0 {
+		metricReqErr.Inc("Pipeline", msg)
+	}
+
 	return nil
 }
 
+func errFormat(err error) string {
+	if err == nil || err == red.Nil {
+		return ""
+	}
+
+	es := err.Error()
+	switch {
+	case strings.HasPrefix(es, "read"):
+		return "read timeout"
+	case strings.HasPrefix(es, "dial"):
+		if strings.Contains(es, "connection refused") {
+			return "connection refused"
+		}
+		return "dial timeout"
+	case strings.HasPrefix(es, "write"):
+		return "write timeout"
+	case strings.Contains(es, "EOF"):
+		return "eof"
+	case strings.Contains(es, "reset"):
+		return "reset"
+	case strings.Contains(es, "broken"):
+		return "broken pipe"
+	case strings.Contains(es, "breaker"):
+		return "breaker"
+	default:
+		return "unexpected error"
+	}
+}
+
 func logDuration(ctx context.Context, cmd red.Cmder, duration time.Duration) {
 	var buf strings.Builder
 	for i, arg := range cmd.Args() {

core/stores/redis/metrics.go

@@ -0,0 +1,23 @@
+package redis
+
+import "github.com/zeromicro/go-zero/core/metric"
+
+const namespace = "redis_client"
+
+var (
+	metricReqDur = metric.NewHistogramVec(&metric.HistogramVecOpts{
+		Namespace: namespace,
+		Subsystem: "requests",
+		Name:      "duration_ms",
+		Help:      "redis client requests duration(ms).",
+		Labels:    []string{"command"},
+		Buckets:   []float64{5, 10, 25, 50, 100, 250, 500, 1000, 2500},
+	})
+	metricReqErr = metric.NewCounterVec(&metric.CounterVecOpts{
+		Namespace: namespace,
+		Subsystem: "requests",
+		Name:      "error_total",
+		Help:      "redis client requests error count.",
+		Labels:    []string{"command", "error"},
+	})
+)