forked from jaegertracing/jaeger
/
stats.go
49 lines (43 loc) · 1.3 KB
/
stats.go
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// Copyright (c) 2019 The Jaeger Authors.
// Copyright (c) 2017 Uber Technologies, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package route
import (
"context"
"expvar"
"time"
"github.com/opentracing/opentracing-go"
)
var routeCalcByCustomer = expvar.NewMap("route.calc.by.customer.sec")
var routeCalcBySession = expvar.NewMap("route.calc.by.session.sec")
var stats = []struct {
expvar *expvar.Map
baggage string
}{
{routeCalcByCustomer, "customer"},
{routeCalcBySession, "session"},
}
func updateCalcStats(ctx context.Context, delay time.Duration) {
span := opentracing.SpanFromContext(ctx)
if span == nil {
return
}
delaySec := float64(delay/time.Millisecond) / 1000.0
for _, s := range stats {
key := span.BaggageItem(s.baggage)
if key != "" {
s.expvar.AddFloat(key, delaySec)
}
}
}