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CI Results to Slack

This project has been built as a somewhat CI agnostic approach to posting build results to Slack. Some of the plugins for CI servers work great in an environment where you don't have proxy requirements but not so great when some of the tradeoffs are that you have to open the proxies up for the whole CI system (Jenkins). Granted, there are knobs you can pull, but why not also run this on an agent (again in the Jenkins case).

Approach

main.go accepts inputs via environment variables. The idea is to potentially run this on a host or within a Docker container.

Building

make local-docker-build will do all you need but there are other make targets available.

Usage

The following environment variables can be used. You MUST specify either HOOK_URL for incoming webhook integration or both OAUTH_TOKEN and DEST_CHANNEL_ID for app integration which calls the Slack APIs (more flexible):

KEY                  TYPE             DEFAULT    REQUIRED    DESCRIPTION
JOB_NAME             String                      true        Name of the build's job
BUILD_URL            String                      true        Direct URL to the build
BUILD_STATUS         String                      true        Status of build (e.g. currentBuild.currentResult in Jenkins)
HOOK_URL             String                                  Slack Webhook URL set via Incoming Webhooks
DEST_CHANNEL_ID      String                                  Destination Channel ID (not the name of the channel)
OAUTH_TOKEN          String                                  OAuth Token used to send message via app
LAST_BUILD_STATUS    String           UNKNOWN                Status of last build used to provide contextual build Status
BRANCH_NAME          String                                  Name of git branch
GIT_COMMIT           String                                  Git commit hash
BUILD_TIME           String                                  Build time (e.g. durationString in Jenkins)
TRIGGERED_BY         String                                  The action which triggered the build
SKIP_IF_SUCCESS      True or False                           Skip posting if contextual Status is success

Example

docker run --rm=true -e OAUTH_TOKEN -e JOB_NAME -e BUILD_URL -e BUILD_STATUS -e DEST_CHANNEL_ID -e TRIGGERED_BY -e SKIP_IF_SUCCESS -e BUILD_TIME -e LAST_BUILD_STATUS -e BRANCH_NAME ci-result-to-slack

Setup

Slack Bot

OAUTH_TOKEN

To use a Slack Bot, you'll get the OAUTH_TOKEN by following Slack's Bot instructions. You'll want to give the bot access to chat.postMessage by giving it the chat:write:bot scope.

DEST_CHANNEL_ID

NOTE: This is not the name of the channel To get the DEST_CHANNEL_ID (destination channel ID), you can do the following:

In a Browser

The Channel ID is in the URL at the end: https://${YOUR_WORKSPACE}.slack.com/messages/${DEST_CHANNEL_ID}/

In the Slack App

If you right-click on the channel / messages, you can hit Copy Link and also see the DEST_CHANNEL_ID at the end (e.g. https://${YOUR_WORKSPACE}.slack.com/messages/${DEST_CHANNEL_ID})

Slack Incoming Webhooks

To get the HOOK_URL for Incoming Webhooks, you'll follow Slack's Incoming Webhooks instructions.