79 lines
1.6 KiB
Go
79 lines
1.6 KiB
Go
/*
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Copyright 2020 The Kubernetes Authors All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package trace
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import (
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"fmt"
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"github.com/pkg/errors"
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)
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var (
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tracer minikubeTracer
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)
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type minikubeTracer interface {
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StartSpan(string)
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EndSpan(string)
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Cleanup()
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}
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// Initialize intializes the global tracer variable
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func Initialize(t string) error {
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tr, err := getTracer(t)
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if err != nil {
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return errors.Wrap(err, "getting tracer")
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}
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tracer = tr
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return nil
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}
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func getTracer(t string) (minikubeTracer, error) {
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switch t {
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case "gcp":
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return initGCPTracer()
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case "":
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return nil, nil
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}
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return nil, fmt.Errorf("%s is not a valid tracer, valid tracers include: [gcp]", t)
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}
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// StartSpan starts a span with the given name
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func StartSpan(name string) {
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if tracer == nil {
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return
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}
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tracer.StartSpan(name)
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}
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// EndSpan ends a span with the given name
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func EndSpan(name string) {
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if tracer == nil {
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return
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}
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tracer.EndSpan(name)
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}
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// Cleanup is responsible for trace related cleanup,
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// such as flushing all data
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func Cleanup() {
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if tracer == nil {
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return
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}
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tracer.Cleanup()
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}
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