feat: slack bot

README.md

@@ -7,6 +7,7 @@
 * 企业微信群机器人消息
 * 钉钉自定义机器人消息
 * 飞书自定义机器人消息
+* Slack机器人消息
 
 ### 微信
 

cmd/root.go

@@ -49,4 +49,5 @@ func init() {
 	rootCmd.AddCommand(weiXinWorkCmd)
 	rootCmd.AddCommand(dingTalkCmd)
 	rootCmd.AddCommand(feiShuCmd)
+	rootCmd.AddCommand(slackCmd)
 }

cmd/slack.go

@@ -0,0 +1,34 @@
+// Copyright 2022 The pmsg Authors. All rights reserved.
+//
+// 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
+//
+//      http://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 cmd
+
+import (
+	"github.com/spf13/cobra"
+
+	"github.com/lenye/pmsg/pkg/flags"
+)
+
+// slackCmd slack
+var slackCmd = &cobra.Command{
+	Use:     "slack",
+	Aliases: []string{"sk"},
+	Short:   "slack",
+}
+
+func init() {
+	slackCmd.PersistentFlags().StringVarP(&userAgent, flags.UserAgent, "a", "", "http user agent")
+
+	slackCmd.AddCommand(slackBotCmd)
+}

cmd/slack_bot.go

@@ -0,0 +1,48 @@
+// Copyright 2022 The pmsg Authors. All rights reserved.
+//
+// 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
+//
+//      http://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 cmd
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/spf13/cobra"
+
+	"github.com/lenye/pmsg/pkg/flags"
+	"github.com/lenye/pmsg/pkg/slack/bot"
+)
+
+// slackBotCmd slack bot
+var slackBotCmd = &cobra.Command{
+	Use:   "bot",
+	Short: "publish slack bot message",
+	Args:  cobra.ExactArgs(1),
+	Run: func(cmd *cobra.Command, args []string) {
+		arg := bot.CmdSendParams{
+			UserAgent: userAgent,
+			URL:       url,
+			Data:      args[0],
+		}
+		if err := bot.CmdSend(&arg); err != nil {
+			fmt.Fprintln(os.Stderr, err)
+		}
+	},
+	Example: "pmsg slack bot --url webhook_url '{\"text\": \"Hello, World!\"}'",
+}
+
+func init() {
+	slackBotCmd.Flags().StringVar(&url, flags.Url, "", "slack webhook url")
+	slackBotCmd.MarkFlagRequired(flags.Url)
+}

docs/readme.md

@@ -19,6 +19,10 @@
 
 * [自定义机器人消息](feishu/bot_message.md)
 
+### Slack
+
+* [机器人消息](slack/bot_message.md)
+
 ## 微信
 
 * [获取接口调用凭证（公众号、小程序）](weixin/access_token.md)access_token

docs/slack/bot_message.md

@@ -0,0 +1,25 @@
+### 推送slack机器人消息
+
+命令参数说明
+
+```text
+$ pmsg slack bot -h
+
+-a, --user_agent string     http user agent
+
+    --url string   slack webhook url
+
+args                        参数：消息内容
+```
+
+样例
+
+linux
+
+```shell
+$ pmsg slack bot --url webhook_url '{"text": "Hello, World!"}'
+
+ok
+```
+
+官方开发文档 [推送slack机器人消息](https://api.slack.com/messaging/webhooks)

pkg/slack/bot/message.go

@@ -0,0 +1,28 @@
+// Copyright 2022 The pmsg Authors. All rights reserved.
+//
+// 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
+//
+//      http://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 bot
+
+import (
+	"github.com/lenye/pmsg/pkg/slack/client"
+)
+
+// Send 发送消息
+func Send(webhookUrl, body string) error {
+	_, err := client.PostJSON(webhookUrl, body)
+	if err != nil {
+		return err
+	}
+	return nil
+}

pkg/slack/bot/message_cmd.go

@@ -0,0 +1,41 @@
+// Copyright 2022 The pmsg Authors. All rights reserved.
+//
+// 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
+//
+//      http://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 bot
+
+import (
+	"fmt"
+
+	"github.com/lenye/pmsg/pkg/http/client"
+	"github.com/lenye/pmsg/pkg/slack"
+)
+
+type CmdSendParams struct {
+	UserAgent string
+	URL       string
+	Data      string
+}
+
+// CmdSend 发送消息
+func CmdSend(arg *CmdSendParams) error {
+
+	client.SetUserAgent(arg.UserAgent)
+
+	if err := Send(arg.URL, arg.Data); err != nil {
+		return err
+	}
+	fmt.Println(slack.MessageOK)
+
+	return nil
+}

pkg/slack/client/client.go

@@ -0,0 +1,44 @@
+// Copyright 2022 The pmsg Authors. All rights reserved.
+//
+// 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
+//
+//      http://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 client
+
+import (
+	"fmt"
+	"net/http"
+	"strings"
+
+	httpClient "github.com/lenye/pmsg/pkg/http/client"
+	"github.com/lenye/pmsg/pkg/slack"
+)
+
+// PostJSON http post json
+func PostJSON(url, reqBody string) (http.Header, error) {
+	resp, err := httpClient.Post(url, httpClient.HdrValContentTypeJson, strings.NewReader(reqBody))
+	if err != nil {
+		return nil, fmt.Errorf("%w; %s %s, %v", httpClient.ErrRequest, http.MethodPost, url, err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode == http.StatusTooManyRequests {
+		return resp.Header, fmt.Errorf("%w; rate limit exceeded, retry after %s second", slack.ErrRequest, resp.Header.Get("Retry-After"))
+	}
+
+	// Slack seems to send an HTML body along with 5xx error codes. Don't parse it.
+	if resp.StatusCode != http.StatusOK {
+		return resp.Header, fmt.Errorf("%w; server error: %s", slack.ErrRequest, resp.Status)
+	}
+
+	return resp.Header, nil
+}

pkg/slack/response.go

@@ -0,0 +1,25 @@
+// Copyright 2022 The pmsg Authors. All rights reserved.
+//
+// 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
+//
+//      http://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 slack
+
+import (
+	"errors"
+)
+
+const (
+	MessageOK = "ok"
+)
+
+var ErrRequest = errors.New("slack request error")