[Day 23] Mattermost - ChatOps

ChatOps with Mattermost

chatops好处

成本低
互动性佳
即时反应提高效率
讯息公开透明化
提升团队维运经验
- 因为是公开讯息所以大家可以在窗口很透明的看到操作，以学习经验

chatops成本

聊天机器人开发、维护

chatops实作

监听
确认指令
发动

git clone 范例专案

git clone https://github.com/mattermost/mattermost-bot-sample-golang
cd mattermost-bot-sample-golang

建立一个使用者给bot使用

然後把此帐号加入到设定好的要监听的channel内

设定

然後点开bot_sample.go查看

调整const内容

const (
	SAMPLE_NAME = "Mattermost Bot Sample"

	USER_EMAIL    = "[email protected]"
	USER_PASSWORD = "ithomebot"
	USER_NAME     = "ithome-bot"
	USER_FIRST    = "Sample"
	USER_LAST     = "Bot"

	TEAM_NAME        = "rainforest"
	CHANNEL_LOG_NAME = "gitea"
)

调整http连线设定

func main() {
	println(SAMPLE_NAME)

	SetupGracefulShutdown()

	client = model.NewAPIv4Client("http://localhost:8065")

调整WS连线设定

调整第67行 ws参数将 ws://localhost:8065 改为你的URL

	// Lets start listening to some channels via the websocket!
	webSocketClient, err := model.NewWebSocketClient4("ws://localhost:8065", client.AuthToken)
	if err != nil {
		println("We failed to connect to the web socket")
		PrintError(err)
	}

查看触发command的单字

看一下

func HandleMsgFromDebuggingChannel（）{}

	    // if you see any word matching 'alive' then respond
		if matched, _ := regexp.MatchString(`(?:^|\W)alive(?:$|\W)`, post.Message); matched {
			SendMsgToDebuggingChannel("Yes I'm running", post.Id)
			return
		}

		// if you see any word matching 'up' then respond
		if matched, _ := regexp.MatchString(`(?:^|\W)up(?:$|\W)`, post.Message); matched {
			SendMsgToDebuggingChannel("Yes I'm running", post.Id)
			return
		}

		// if you see any word matching 'running' then respond
		if matched, _ := regexp.MatchString(`(?:^|\W)running(?:$|\W)`, post.Message); matched {
			SendMsgToDebuggingChannel("Yes I'm running", post.Id)
			return
		}

		// if you see any word matching 'hello' then respond
		if matched, _ := regexp.MatchString(`(?:^|\W)hello(?:$|\W)`, post.Message); matched {
			SendMsgToDebuggingChannel("Yes I'm running", post.Id)
			return
		}

所以此机器人当收到「alive, up, running, hello」时，会有互动。

在此专案内下指令测试

go run *.go

启动後会在Terminal上显示

Ithome Mattermost Bot
Server detected and is running version 5.32.0

与BOT互动

新增互动指令

我们练习一下加个把当下目录列出来的指令

把原本执行的go run中断掉

至

func HandleMsgFromDebuggingChannel（）{}

下面新增 ls 指令列出该目录档案

		if matched, _ := regexp.MatchString(`(?:^|\W)ithome(?:$|\W)`, post.Message); matched {
			cmd := exec.Command("ls")
			out, err := cmd.CombinedOutput()

			if err != nil {
				log.Fatalf("cmd.Run() failed with %s\n", err)
			}

			SendMsgToDebuggingChannel(string(out), post.Id)

			return
		}

储存後，再下一次指令