本项目是阿里云日志服务 （Log Service，简称SLS）API的Golang编程接口，提供了对于Log Service Rest API的封装和实现，帮助Golang开发人员更快编程使用阿里云日志服务。
本项目主要由3个部分组成：
- 日志服务基础API封装和实现。
- Golang Producer Library，用于向日志服务批量发送数据，详情参考Aliyun LOG Golang Producer 快速入门。
- Golang Consumer Library，用于消费日志服务中的数据，详情参考Consumer Library。
详细API接口以及含义请参考：https://help.aliyun.com/document_detail/29007.html
go get -u github.com/aliyun/aliyun-log-go-sdk
前言: 所有的使用样例都位于example目录下，使用该目录下的所有样例前，请先在该目录下的config.go文件中的init函数中配置您的 project, logstore等所需要的配置参数，example目录下的所有样例都会使用config.go文件中配置的参数。
-
创建Client
参考 config.go 文件
AccessKeyID = "your ak id" AccessKeySecret = "your ak secret" Endpoint = "your endpoint" // just like cn-hangzhou.log.aliyuncs.com Client = sls.CreateNormalInterface(Endpoint,AccessKeyID,AccessKeySecret,"")
-
创建project
参考 log_project.go文件
project, err := util.Client.CreateProject(ProjectName,"Project used for testing") if err != nil { fmt.Println(err) } fmt.Println(project)
-
创建logstore
err := util.Client.CreateLogStore(ProjectName, LogStoreName,2,2,true,64) if err != nil { fmt.Println(err) }
-
创建索引
indexKeys := map[string]sls.IndexKey{ "col_0": { Token: []string{" "}, CaseSensitive: false, Type: "long", }, "col_1": { Token: []string{",", ":", " "}, CaseSensitive: false, Type: "text", }, } index := sls.Index{ Keys: indexKeys, Line: &sls.IndexLine{ Token: []string{",", ":", " "}, CaseSensitive: false, IncludeKeys: []string{}, ExcludeKeys: []string{}, }, } err = util.Client.CreateIndex(util.ProjectName, logstore_name, index) if err != nil { fmt.Printf("CreateIndex fail, err: %s", err) return } fmt.Println("CreateIndex success")
-
写数据
这里展示了用sdk中原生的API接口去发送数据简单示例，但是我们不推荐用API直接向logstore写入数据，推荐使用SDK 中提供的producer 包向logstore 写入数据，自动压缩数据并且提供安全退出机制，不会使数据丢失。
logs := []*sls.Log{} for logIdx := 0; logIdx < 100; logIdx++ { content := []*sls.LogContent{} for colIdx := 0; colIdx < 10; colIdx++ { content = append(content, &sls.LogContent{ Key: proto.String(fmt.Sprintf("col_%d", colIdx)), Value: proto.String(fmt.Sprintf("loggroup idx: %d, log idx: %d, col idx: %d, value: %d", loggroupIdx, logIdx, colIdx, rand.Intn(10000000))), }) } log := &sls.Log{ Time: proto.Uint32(uint32(time.Now().Unix())), Contents: content, } logs = append(logs, log) } loggroup := &sls.LogGroup{ Topic: proto.String(""), Source: proto.String("10.230.201.117"), Logs: logs, } // PostLogStoreLogs API Ref: https://intl.aliyun.com/help/doc-detail/29026.htm for retryTimes := 0; retryTimes < 10; retryTimes++ { err := util.Client.PutLogs(util.ProjectName, util.LogStoreName, loggroup) if err == nil { fmt.Printf("PutLogs success, retry: %d\n", retryTimes) break } else { fmt.Printf("PutLogs fail, retry: %d, err: %s\n", retryTimes, err) //handle exception here, you can add retryable erorrCode, set appropriate put_retry if strings.Contains(err.Error(), sls.WRITE_QUOTA_EXCEED) || strings.Contains(err.Error(), sls.PROJECT_QUOTA_EXCEED) || strings.Contains(err.Error(), sls.SHARD_WRITE_QUOTA_EXCEED) { //mayby you should split shard time.Sleep(1000 * time.Millisecond) } else if strings.Contains(err.Error(), sls.INTERNAL_SERVER_ERROR) || strings.Contains(err.Error(), sls.SERVER_BUSY) { time.Sleep(200 * time.Millisecond) } } }
6.读数据
这里展示了使用SDK中原生API接口调用去拉取数据的方式，我们不推荐使用这种方式去读取消费logstore中的数据，推荐使用SDK中 consumer 消费组去拉取数据，消费组提供自动负载均衡以及失败重试等机制，并且会自动保存拉取断点，再次拉取不会拉取重复数据。
shards, err := client.ListShards(project, logstore)
totalLogCount := 0
for _, shard := range shards {
fmt.Printf("[shard] %d begin\n", shard.ShardID)
beginCursor, err := client.GetCursor(project, logstore, shard.ShardID, "begin")
if err != nil {
panic(err)
}
endCursor, err := client.GetCursor(project, logstore, shard.ShardID, "end")
if err != nil {
panic(err)
}
nextCursor := beginCursor
for nextCursor != endCursor {
gl, nc, err := client.PullLogs(project, logstore, shard.ShardID, nextCursor, endCursor, 10)
if err != nil {
fmt.Printf("pull log error : %s\n", err)
time.Sleep(time.Second)
continue
}
nextCursor = nc
fmt.Printf("now count %d \n", totalLogCount)
if gl != nil {
for _, lg := range gl.LogGroups {
for _, tag := range lg.LogTags {
fmt.Printf("[tag] %s : %s\n", tag.GetKey(), tag.GetValue())
}
for _, log := range lg.Logs {
totalLogCount++
// print log
for _, content := range log.Contents {
fmt.Printf("[log] %s : %s\n", content.GetKey(), content.GetValue())
}
}
}
}
}-
创建机器组
attribute := sls.MachinGroupAttribute{
ExternalName: "",
TopicName: "",
}
machineList := []string{"mac-user-defined-id-value"}
var machineGroup = &sls.MachineGroup{
Name: groupName,
MachineIDType: "userdefined",
MachineIDList: machineList,
Attribute: attribute,
}
err = util.Client.CreateMachineGroup(ProjectName, machineGroup)
if err != nil {
fmt.Println(err)
}-
创建logtail 采集配置
logtail 采集配置，目前通过sdk 支持创建下列几种模式的采集配置，分别为 完整正则，分隔符模式，json模式 ，插件模式，这里展示的完整正则模式的创建。
regexConfig := new(sls.RegexConfigInputDetail) regexConfig.DiscardUnmatch = false regexConfig.Key = []string{"logger", "time", "cluster", "hostname", "sr", "app", "workdir", "exe", "corepath", "signature", "backtrace"} regexConfig.Regex = "\\S*\\s+(\\S*)\\s+(\\S*\\s+\\S*)\\s+\\S*\\s+(\\S*)\\s+(\\S*)\\s+(\\S*)\\s+(\\S*)\\s+(\\S*)\\s+(\\S*)\\s+(\\S*)\\s+\\S*\\s+(\\S*)\\s*([^$]+)" regexConfig.TimeFormat = "%Y/%m/%d %H:%M:%S" regexConfig.LogBeginRegex = `INFO core_dump_info_data .*` regexConfig.LogPath = "/cloud/log/tianji/TianjiClient#/core_dump_manager" regexConfig.FilePattern = "core_dump_info_data.log*" regexConfig.MaxDepth = 0 sls.InitRegexConfigInputDetail(regexConfig) outputDetail := sls.OutputDetail{ ProjectName: projectName, LogStoreName: logstore, } logConfig := &sls.LogConfig{ Name: configName, InputType: "file", OutputType: "LogService", // Now only supports LogService InputDetail: regexConfig, OutputDetail: outputDetail, } err = util.Client.CreateConfig(projectName, logConfig) if err != nil { fmt.Println(err) }
-
logtail配置到机器组
err = util.Client.ApplyConfigToMachineGroup(ProjectName, confName, mgname) if err != nil { fmt.Println(err) }
protoc -I=. -I=$GOPATH/src -I=$GOPATH/src/github.com/gogo/protobuf/protobuf --gofast_out=. log.proto
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