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https://github.com/jenkinsci/slack-plugin

A Jenkins plugin for posting notifications to a Slack channel
https://github.com/jenkinsci/slack-plugin

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A Jenkins plugin for posting notifications to a Slack channel

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# Slack plugin for Jenkins



[![Build Status][jenkins-status]][jenkins-builds]

[![Jenkins Plugin][plugin-version-badge]][plugin]

[![GitHub release][github-release-badge]][github-release]

[![Jenkins Plugin Installs][plugin-install-badge]][plugin]



Provides Jenkins notification integration with Slack or Slack compatible

applications like [RocketChat][rocketchat] and [Mattermost][mattermost].



## Install Instructions for Slack



1. Get a Slack account: 

2. Install this plugin on your Jenkins server:



    1.  From the Jenkins homepage navigate to `Manage Jenkins`

    2.  Navigate to `Manage Plugins`,

    3.  Change the tab to `Available`,

    4.  Search for `slack`,

    5.  Check the box next to install.



![image][img-plugin-manager]



3. Continue to the next section to create your Slack app.



### Creating your app



1. Go to  and click "Create New App".

2. Click `From an app manifest`

3. Select your workspace

4. Delete the example manifest that Slack provides

5. Click YAML

6. Paste the following into the text box:



```yaml

display_information:

  name: Jenkins

features:

  bot_user:

    display_name: Jenkins

    always_online: true

oauth_config:

  scopes:

    bot:

      - channels:read

      - chat:write

      - chat:write.customize

      - files:write

      - reactions:write

      - users:read

      - users:read.email

      - groups:read

settings:

  org_deploy_enabled: false

  socket_mode_enabled: false

  token_rotation_enabled: false

```



7. Click "Next"

8. Click "Create"

9. Click "Install App to Workspace"

10. Click "Allow"

11. Click "OAuth & Permissions" in the sidebar

9.  Copy the "Bot User OAuth Access Token"

10. *On Jenkins*: Find the Slack configuration in "Manage Jenkins → System".

    1.  *On Jenkins*: Click "Add" to create a new "Secret text" Credential with the bot user token.

    2.  *On Jenkins*: Select the new "Secret text" in the dropdown.

    3.  *On Jenkins*: Add a default channel (this can be removed after validating the connection works).

    4.  *On Jenkins*: Tick the "Custom slack app bot user" option.

11. Invite the Jenkins bot user into the Slack channel(s) you wish to be notified in.

12. *On Jenkins*: Click test connection. A message will be sent to the default channel / default member.



### Notify for all jobs



If you want to configure a notification to be sent to Slack for **all jobs**, you may want to also consider installing an additional plugin called [Global Slack Notifier plugin](https://plugins.jenkins.io/global-slack-notifier).



### Pipeline job



    slackSend color: "good", message: "Message from Jenkins Pipeline"



Additionally you can pass attachments or blocks (requires [bot user](#bot-user-mode)) in order to send complex

messages, for example:



Attachments:



```groovy

def attachments = [

  [

    text: 'I find your lack of faith disturbing!',

    fallback: 'Hey, Vader seems to be mad at you.',

    color: '#ff0000'

  ]

]



slackSend(channel: "#general", attachments: attachments)

```



Blocks (this feature requires a '[bot user](#bot-user-mode)' and a custom slack app):



```groovy

blocks = [

	[

		"type": "section",

		"text": [

			"type": "mrkdwn",

			"text": "Hello, Assistant to the Regional Manager Dwight! *Michael Scott* wants to know where you'd like to take the Paper Company investors to dinner tonight.\n\n *Please select a restaurant:*"

		]

	],

    [

		"type": "divider"

	],

	[

		"type": "section",

		"text": [

			"type": "mrkdwn",

			"text": "*Farmhouse Thai Cuisine*\n:star::star::star::star: 1528 reviews\n They do have some vegan options, like the roti and curry, plus they have a ton of salad stuff and noodles can be ordered without meat!! They have something for everyone here"

		],

		"accessory": [

			"type": "image",

			"image_url": "https://s3-media3.fl.yelpcdn.com/bphoto/c7ed05m9lC2EmA3Aruue7A/o.jpg",

			"alt_text": "alt text for image"

		]

	]

]



slackSend(channel: "#general", blocks: blocks)

```



For more information about slack messages see [Slack Messages Api](https://api.slack.com/docs/messages), [Slack attachments Api](https://api.slack.com/docs/message-attachments) and [Block kit](https://api.slack.com/block-kit)



Note: the attachments API is classified as legacy, with blocks as the replacement (but blocks are only supported when using a bot user through a custom slack app).



#### File upload



You can upload files to slack with this plugin:



```groovy

node {

  sh "echo hey > blah.txt"

  slackUploadFile filePath: "*.txt", initialComment:  "HEY HEY"

}

```



This feature requires [botUser](#bot-user-mode) mode.



##### File upload to a user channel



You can upload files to a user channel by messaging the user first and then using the channel ID from the message response:



```groovy

node {

  sh "echo hey > blah.txt"

  def slackResponse = slackSend channel: '$userId', message: 'Hey', sendAsText: true

  slackUploadFile filePath: "*.txt", channel: slackResponse.channelId

}

```



#### Threads Support



You can send a message and create a thread on that message using the pipeline step.

The step returns an object which you can use to retrieve the thread ID. Send new messages with that thread ID as the

target channel to create a thread. All messages of a thread should use the same thread ID.



Example:



```groovy

def slackResponse = slackSend(channel: "cool-threads", message: "Here is the primary message")

slackSend(channel: slackResponse.threadId, message: "Thread reply #1")

slackSend(channel: slackResponse.threadId, message: "Thread reply #2")

```



This feature requires [botUser](#bot-user-mode) mode.



Messages that are posted to a thread can also optionally be broadcasted to the

channel. Set `replyBroadcast: true` to do so. For example:



```groovy

def slackResponse = slackSend(channel: "ci", message: "Started build")

slackSend(channel: slackResponse.threadId, message: "Build still in progress")

slackSend(

    channel: slackResponse.threadId,

    replyBroadcast: true,

    message: "Build failed. Broadcast to channel for better visibility."

)

```



If you wish to upload a file to a thread, you can do so by specifying the channel, and the timestamp 

of the thread you want to add the file to, separated by a colon. For example:



```groovy

def slackResponse = slackSend(channel: "cool-threads", message: "Here is the primary message")

sh "echo hey > blah.txt"

slackUploadFile(channel: "cool-threads:" + slackResponse.ts, filePath: "*.txt", initialComment:  "A file, inside a thread.")

```



#### Update Messages



You can update the content of a previously sent message using the pipeline step.

The step returns an object which you can use to retrieve the timestamp and channelId

NOTE: The slack API requires the channel ID for `chat.update` calls.



Example:



```groovy

def slackResponse = slackSend(channel: "updating-stuff", message: "Here is the primary message")

slackSend(channel: slackResponse.channelId, message: "Update message now", timestamp: slackResponse.ts)

```



This feature requires [botUser](#bot-user-mode) mode.



#### Emoji Reactions



Add an emoji reaction to a previously-sent message like this:



Example:



```groovy

def slackResponse = slackSend(channel: "emoji-demo", message: "Here is the primary message")

slackResponse.addReaction("thumbsup")

```



![image][img-emoji-reaction]



You can remove an emoji reaction to a previously-sent message like this:



Example:



```groovy

def slackResponse = slackSend(channel: "emoji-demo", message: "Here is the primary message")

slackResponse.addReaction("thumbsup")

// ... do some stuff

slackResponse.removeReaction("thumbsup")

```



This may only work reliably in channels (as opposed to private messages) due to [limitations in the Slack API](https://api.slack.com/methods/chat.postMessage) (See "Post to an IM channel").



This does not currently work in a situation where Jenkins is restarted between sending the initial message and adding the reaction. If this is something you need, please file an issue.



This feature requires [botUser](#bot-user-mode) mode and the `reactions:write` API scope.



#### Unfurling Links



You can allow link unfurling if you send the message as text. This only works in a text message, as attachments cannot be unfurled.



Example:



```groovy

slackSend(channel: "news-update", message: "https://www.nytimes.com", sendAsText: true)

```



#### User Id Look Up



There are two pipeline steps available to help with user id look up.



A user id can be resolved from a user's email address with the `slackUserIdFromEmail` step.



Example:



```groovy

def userId = slackUserIdFromEmail('[email protected]')

slackSend(color: "good", message: "<@$userId> Message from Jenkins Pipeline")

```



A list of user ids can be resolved against the set of changeset commit authors with the `slackUserIdsFromCommitters` step.



Example:



```groovy

def userIds = slackUserIdsFromCommitters()

def userIdsString = userIds.collect { "<@$it>" }.join(' ')

slackSend(color: "good", message: "$userIdsString Message from Jenkins Pipeline")

```



This feature requires [botUser](#bot-user-mode) mode and the `users:read` and `users:read.email` API scopes.



#### Colors



_Warning: This functionality is not supported if you are using the `blocks` layout mode_



Any hex triplet (i.e. `'#AA1100'`) can be used for the color of the message. There are also three builtin color options:



| Name      | Color  |

| --------- | ------ |

| `good`    | green  |

| `warning` | yellow |

| `danger`  | red    |



### Freestyle job



1.  Configure it in your Jenkins job (and optionally as global configuration) and

    **add it as a Post-build action**.



## Security



Use Jenkins Credentials and a credential ID to configure the Slack integration

token. It is a security risk to expose your integration token using the previous

_Integration Token_ setting.



Create a new **_Secret text_** credential:



![image][img-secret-text]



Select that credential as the value for the **_Credential_** field:



![image][img-token-credential]



## Direct Message



You can send messages to channels or you can notify individual users via their

slackbot.  In order to notify an individual user, use the syntax `@user_id` in

place of the project channel.  Mentioning users by display name may work, but it

is not unique and will not work if it is an ambiguous match.



## User Mentions



Use the syntax `<@user_id>` in a message to mention users directly. See [User Id Look Up](#user-id-look-up) for pipeline steps to help with user id look up.



## Configuration as code



This plugin supports configuration as code

Add to your yaml file:



```yaml

credentials:

  system:

    domainCredentials:

      - credentials:

          - string:

              scope: GLOBAL

              id: slack-token

              secret: '${SLACK_TOKEN}'

              description: Slack token



unclassified:

  slackNotifier:

    teamDomain:  # i.e. your-company (just the workspace name not the full url)

    tokenCredentialId: slack-token

    botUser: true

```



For more details see the configuration as code plugin documentation:



## Troubleshooting connection failure



When testing the connection, you may see errors like:



```text

    WARNING j.p.slack.StandardSlackService#publish: Response Code: 404

```



There's a couple of things to try:



### Have you enabled bot user mode?



If you've ticked `Custom slack app bot user` then try unticking it, that mode is for when you've created a custom app and installed it to your workspace instead of the default Jenkins app made by Slack



### Have you set the override URL?



If you've entered something into `Override url` then try clearing it out, that field is only needed for slack compatible apps like mattermost.



### Enable additional logging



Add a [log recorder](https://support.cloudbees.com/hc/en-us/articles/204880580-How-do-I-create-a-logger-in-Jenkins-for-troubleshooting-and-diagnostic-information-) for the [StandardSlackService](https://github.com/jenkinsci/slack-plugin/blob/master/src/main/java/jenkins/plugins/slack/StandardSlackService.java) class this should give you additional details on what's going on.



If you still can't figure it out please raise an issue with as much information as possible about your config and any relevant logs.



## Developer instructions



Install Maven and JDK.



```shell

$ mvn -version | grep -v home

Apache Maven 3.3.9 (bb52d8502b132ec0a5a3f4c09453c07478323dc5; 2015-11-10T08:41:47-08:00)

Java version: 1.7.0_79, vendor: Oracle Corporation

Default locale: en_US, platform encoding: UTF-8

OS name: "linux", version: "4.4.0-65-generic", arch: "amd64", family: "unix"

```



Run unit tests



```shell

mvn test

```



Create an HPI file to install in Jenkins (HPI file will be in

`target/slack.hpi`).



```shell

mvn clean package

```



[jenkins-builds]: https://ci.jenkins.io/job/Plugins/job/slack-plugin/job/master/



[jenkins-status]: https://ci.jenkins.io/buildStatus/icon?job=Plugins/slack-plugin/master



[slack-badge]: https://jenkins-slack-testing-signup.herokuapp.com/badge.svg



[slack-signup]: https://jenkins-slack-testing-signup.herokuapp.com/



[plugin-version-badge]: https://img.shields.io/jenkins/plugin/v/slack.svg



[plugin-install-badge]: https://img.shields.io/jenkins/plugin/i/slack.svg?color=blue



[plugin]: https://plugins.jenkins.io/slack



[github-release-badge]: https://img.shields.io/github/release/jenkinsci/slack-plugin.svg?label=release



[github-release]: https://github.com/jenkinsci/slack-plugin/releases/latest



[rocketchat]: https://rocket.chat/



[mattermost]: https://about.mattermost.com/



[img-emoji-reaction]: /docs/emoji-reaction.png



[img-secret-text]: https://cloud.githubusercontent.com/assets/983526/17971588/6c26dfa0-6aa9-11e6-808c-3e139446e013.png



[img-token-credential]: /docs/global-config.png



[img-plugin-manager]: /docs/plugin-manager-search.png