Resource for Concourse CI to send messages to Telegram. You can pass your message from tasks with text file, or send a static message.

It allows you to send (put) a messages to Telegram from your pipeline.

Before using this resource, you should create a bot for yourself. Please, follow the instruction to create a bot and to get its token. Pass this value to the bot_token parameter.

Then, find out the chat ID you want to send notifications to. Now you are ready to use it.

It is a good idea to create a private channel for your team where bot will print all the messages from Concourse. In this case you need to follow this steps:

1. create a public channel, give it a name, say, @MyChannel
2. add your bot as an administrator
3. then, send some testing message to this channel, use this command: curl -X POST "https://api.telegram.org/bot<botApi>/sendMessage?chat_id=@MyChannel&text=123". You should see a new message from your bot in your channel. Check the JSON output from this command, you will find an chat_id. The output could look like this: { "ok" : true, "result" : { "chat" : { "id" : -1001005582487, "title" : "Test Private Channel", "type" : "channel" }, "date" : 1448245538, "message_id" : 7, "text" : "123" } } , where chat_id is -1001005582487
4. optionally, now you can make your channel private, generate link and send it to your collegues

The simplest example:

---
# declare custom resource type:
resource_types:
- name: telegram-notification
  type: docker-image
  source:
    repository: w32blaster/concourse-telegram-notifier
    tag: latest

# declare resource
resources:
- name: telegram-notification
  type: telegram-notification
  source:
    bot_token: "<bot token>"

# use it in your job
jobs:
- name: "Job Send Message To Telegram"
  public: true
  plan:
    - put: telegram-notification
      params:
         chat_id: "<your chat ID>"
         # you need to specify one of text or text_file properties, with text_file you can generate message text in your previous task
         text: "Build ok. [Build $BUILD_NAME](http://localhost:8080/pipelines/$BUILD_PIPELINE_NAME/jobs/$BUILD_JOB_NAME/builds/$BUILD_NAME)"
         text_file: './task_output/file_with_message'
         # optional parameter, Telegram API parse mode, may be HTML or Markdown, Markdown is default value
         parse_mode: HTML

Have fun.