mirror of
https://gitee.com/milvus-io/milvus.git
synced 2024-12-05 05:18:52 +08:00
80 lines
2.0 KiB
Go
80 lines
2.0 KiB
Go
// Copyright (C) 2019-2020 Zilliz. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software distributed under the License
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// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
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// or implied. See the License for the specific language governing permissions and limitations under the License.
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package trace
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import (
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"context"
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"fmt"
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"testing"
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"errors"
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oplog "github.com/opentracing/opentracing-go/log"
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)
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type simpleStruct struct {
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name string
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value string
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}
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func TestTracing(t *testing.T) {
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//Already Init in each framework, this can be ignored in debug
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closer := InitTracing("test")
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defer closer.Close()
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// context normally can be propagated through func params
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ctx := context.Background()
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//start span
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//default use function name for operation name
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sp, ctx := StartSpanFromContext(ctx)
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sp.SetTag("tag1", "tag1")
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// use self-defined operation name for span
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// sp, ctx := StartSpanFromContextWithOperationName(ctx, "self-defined name")
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defer sp.Finish()
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ss := &simpleStruct{
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name: "name",
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value: "value",
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}
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sp.LogFields(oplog.String("key", "value"), oplog.Object("key", ss))
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err := caller(ctx)
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if err != nil {
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LogError(sp, err) //LogError do something error log in trace and returns origin error.
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}
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}
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func caller(ctx context.Context) error {
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for i := 0; i < 2; i++ {
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// if span starts in a loop, defer is not allowed.
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// manually call span.Finish() if error occurs or one loop ends
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sp, _ := StartSpanFromContextWithOperationName(ctx, fmt.Sprintf("test:%d", i))
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sp.SetTag(fmt.Sprintf("tags:%d", i), fmt.Sprintf("tags:%d", i))
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var err error
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if i == 1 {
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err = errors.New("test")
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}
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if err != nil {
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sp.Finish()
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return LogError(sp, err)
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}
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sp.Finish()
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}
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return nil
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}
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