Upload artifact from jenkins server to slack using curl

Everytime when jenkins completes building an artifact I want it to upload an artifact to the slack channel. There are slack plugins available for jenkins pipeline that uploads file but its not always the case for everyone. What I have covered below is the alternative approach using curl.

What you’ll need?

1. A slack channel.

2. A Slack app. Go here to create one.

3. Slack app’s OAuth Token.

   

4. On the same page you’ll find Scope section. In order to upload file, app will need files:write scope.

   

5. Now, open your slack channel and ADD the slack app you just created.

6. Open your Jenkinsfile and add the following function.

    def uploadFileToSlack() {
        def filePattern = "**/Release*.zip" // file that starts with Release and ends with .zip
        def file = findFiles(glob: "${filePattern}")[0]
        def botAuthToken = "xoxb-BOT_USER_AUTH_ACCESS_TOKEN" // see step #3
        def channelName = "#YOUR-CHANNEL_NAME" // replace with the appropriate channel name.
        try {
            sh(script: """
                     curl --request POST \
                     --url https://slack.com/api/files.upload \
                     --header 'content-type: multipart/form-data' \
                     --form token=$botAuthToken \
                     --form 'channels=$channelName' \
                     --form 'title=${file.name}' \
                     --form file="@${file}"
                      """
                      )
        } catch (Exception e) {
           
        }
    }
   

   Replace the value of filePattern with your desired glob pattern.

7. Lastly, there must be a stage in your Jenkinsfile where it creates an artifact. Call the above function uploadFileToSlack() from there.

Thats all. I hope you find this useful. Thanks!

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• tian kuan

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