A Gradle task to push CircleCI build notifications to Slack

build.gradle.circleci.slack

task circleci_artifact_to_slack {
    doLast {
        println 'Retrieving APK from CircleCI'

        String buildNumber = System.getenv("CIRCLE_BUILD_NUM")
        String branch = System.getenv("CIRCLE_BRANCH")
        String buildUrl = System.getenv("CIRCLE_BUILD_URL")

        String url = "https://circleci.com/api/v1.1/project/github/YOUR_REPO/$buildNumber/artifacts?circle-token=YOUR_TOKEN"
        def artifacts = new JsonSlurper().parseText(url.toURL().text)
        String artifactUrl = artifacts["url"][0]

        String slackToken = System.getenv("SLACK_TOKEN")
        def post = ["curl", "-X", "POST", "--data-urlencode", "payload={\"channel\": \"#not_android_ci\", \"username\": \"CIRCLECI\", \"text\": \" Build $buildNumber at $buildUrl\nfor branch *$branch*\nAPK: $artifactUrl \", \"icon_emoji\": \":android:\"}", "https://hooks.slack.com/services/$slackToken"].
                execute()
    }
}