/
instrument.go
67 lines (57 loc) · 1.65 KB
/
instrument.go
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/*
* Copyright 2019 Insolar Technologies
*
* 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 artifactmanager
import (
"context"
"time"
"go.opencensus.io/stats"
"go.opencensus.io/tag"
"github.com/insolar/insolar/instrumentation/inslogger"
"github.com/insolar/insolar/instrumentation/insmetrics"
)
type methodInstrumenter struct {
ctx context.Context
name string
start time.Time
errlink *error
}
func instrument(ctx context.Context, name string) *methodInstrumenter {
return &methodInstrumenter{
ctx: ctx,
start: time.Now(),
name: name,
}
}
func (mi *methodInstrumenter) err(err *error) *methodInstrumenter {
mi.errlink = err
return mi
}
func (mi *methodInstrumenter) end() {
latency := time.Since(mi.start)
inslog := inslogger.FromContext(mi.ctx)
code := "2xx"
if mi.errlink != nil && *mi.errlink != nil {
code = "5xx"
inslog.Error(*mi.errlink)
}
ctx := insmetrics.InsertTag(mi.ctx, tagMethod, mi.name)
ctx = insmetrics.ChangeTags(
ctx,
tag.Insert(tagMethod, mi.name),
tag.Insert(tagResult, code),
)
stats.Record(ctx, statCalls.M(1), statLatency.M(latency.Nanoseconds()/1e6))
}