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49 lines
1.4 KiB
Go
49 lines
1.4 KiB
Go
package clientinterceptors
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import (
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"context"
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"strconv"
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"time"
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"github.com/tal-tech/go-zero/core/metric"
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"github.com/tal-tech/go-zero/core/prometheus"
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"github.com/tal-tech/go-zero/core/timex"
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"google.golang.org/grpc"
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"google.golang.org/grpc/status"
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)
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const clientNamespace = "rpc_client"
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var (
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metricClientReqDur = metric.NewHistogramVec(&metric.HistogramVecOpts{
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Namespace: clientNamespace,
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Subsystem: "requests",
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Name: "duration_ms",
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Help: "rpc client requests duration(ms).",
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Labels: []string{"method"},
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Buckets: []float64{5, 10, 25, 50, 100, 250, 500, 1000},
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})
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metricClientReqCodeTotal = metric.NewCounterVec(&metric.CounterVecOpts{
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Namespace: clientNamespace,
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Subsystem: "requests",
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Name: "code_total",
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Help: "rpc client requests code count.",
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Labels: []string{"method", "code"},
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})
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)
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// PrometheusInterceptor is an interceptor that reports to prometheus server.
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func PrometheusInterceptor(ctx context.Context, method string, req, reply interface{},
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cc *grpc.ClientConn, invoker grpc.UnaryInvoker, opts ...grpc.CallOption) error {
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if !prometheus.Enabled() {
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return invoker(ctx, method, req, reply, cc, opts...)
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}
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startTime := timex.Now()
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err := invoker(ctx, method, req, reply, cc, opts...)
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metricClientReqDur.Observe(int64(timex.Since(startTime)/time.Millisecond), method)
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metricClientReqCodeTotal.Inc(method, strconv.Itoa(int(status.Code(err))))
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return err
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}
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