/
stackdriver.go
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/
stackdriver.go
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//
// Copyright (C) 2019-2021 vdaas.org vald team <vald@vdaas.org>
//
// 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
//
// https://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 stackdriver provides a stackdriver exporter.
package stackdriver
import (
"context"
"contrib.go.opencensus.io/exporter/stackdriver"
"github.com/vdaas/vald/internal/observability/exporter"
"go.opencensus.io/trace"
)
type Stackdriver interface {
exporter.Exporter
}
type exp struct {
exporter *stackdriver.Exporter
monitoringEnabled bool
tracingEnabled bool
*stackdriver.Options
}
func New(opts ...Option) (s Stackdriver, err error) {
e := new(exp)
e.Options = new(stackdriver.Options)
for _, opt := range append(defaultOptions, opts...) {
err = opt(e)
if err != nil {
return nil, err
}
}
return e, nil
}
func (e *exp) Start(ctx context.Context) (err error) {
e.Options.Context = ctx
e.exporter, err = stackdriver.NewExporter(*e.Options)
if err != nil {
return err
}
if e.monitoringEnabled {
err = e.exporter.StartMetricsExporter()
if err != nil {
return err
}
}
if e.tracingEnabled {
trace.RegisterExporter(e.exporter)
}
return nil
}
func (e *exp) Stop(ctx context.Context) {
if e.exporter != nil {
if e.monitoringEnabled {
e.exporter.StopMetricsExporter()
}
e.exporter.Flush()
}
}