Vasiliy Tolstov
d1e9b88260
* fix import path for v2 release Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
83 lines
2.3 KiB
Go
83 lines
2.3 KiB
Go
package victoriametrics
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import (
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"context"
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"fmt"
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"strings"
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"time"
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metrics "github.com/VictoriaMetrics/metrics"
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"github.com/micro/go-micro/v2/server"
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)
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var (
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defaultMetricPrefix = "micro"
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metaLabels []string
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)
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func getName(name string, md map[string]interface{}) string {
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labels := make([]string, 0, len(metaLabels)+len(md))
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labels = append(labels, metaLabels...)
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for k, v := range md {
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labels = append(labels, fmt.Sprintf(`%s="%v"`, k, v))
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}
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if len(labels) > 0 {
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return fmt.Sprintf(`%s_%s{%s}`, defaultMetricPrefix, name, strings.Join(labels, ","))
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}
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return fmt.Sprintf(`%s_%s`, defaultMetricPrefix, name)
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}
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func NewHandlerWrapper(opts ...server.Option) server.HandlerWrapper {
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sopts := server.Options{}
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for _, opt := range opts {
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opt(&sopts)
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}
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metadata := make(map[string]string, len(sopts.Metadata))
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for k, v := range sopts.Metadata {
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metadata[fmt.Sprintf("%s_%s", defaultMetricPrefix, k)] = v
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}
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if len(sopts.Name) > 0 {
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metadata[fmt.Sprintf("%s_%s", defaultMetricPrefix, "name")] = sopts.Name
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}
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if len(sopts.Id) > 0 {
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metadata[fmt.Sprintf("%s_%s", defaultMetricPrefix, "id")] = sopts.Id
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}
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if len(sopts.Version) > 0 {
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metadata[fmt.Sprintf("%s_%s", defaultMetricPrefix, "version")] = sopts.Version
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}
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metaLabels = make([]string, 0, len(metadata))
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for k, v := range metadata {
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metaLabels = append(metaLabels, fmt.Sprintf(`%s="%v"`, k, v))
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}
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return func(fn server.HandlerFunc) server.HandlerFunc {
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return func(ctx context.Context, req server.Request, rsp interface{}) error {
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name := req.Endpoint()
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timeCounterSummary := metrics.GetOrCreateSummary(
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getName("upstream_latency_seconds", map[string]interface{}{"method": name}),
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)
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timeCounterHistogram := metrics.GetOrCreateSummary(
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getName("request_duration_seconds", map[string]interface{}{"method": name}),
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)
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ts := time.Now()
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err := fn(ctx, req, rsp)
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te := time.Since(ts)
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timeCounterSummary.Update(float64(te.Seconds()))
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timeCounterHistogram.Update(te.Seconds())
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if err == nil {
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metrics.GetOrCreateCounter(getName("request_total", map[string]interface{}{"method": name, "status": "success"})).Inc()
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} else {
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metrics.GetOrCreateCounter(getName("request_total", map[string]interface{}{"method": name, "status": "failure"})).Inc()
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}
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return err
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}
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}
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}
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