removed slack task and added bash script instead. Updated gitlab-ci config file

.gitlab-ci.yml

@@ -183,8 +183,11 @@ spinach:ruby21:
 notify:slack:
   stage: notifications
   script:
-    - bundle exec rake ci:slack:error["#ci-test","Build failed for master/tags"]
+    - source ./scripts/notify_slack.sh "#ci-test" "Build failed for master/tags!"
   when: on_failure
-  only:
-    - master
-    - tags
\ No newline at end of file
+  # TODO: uncomment these lines.
+  #only:
+  #  - master@gitlab-org/gitlab-ce
+  #  - tags@gitlab-org/gitlab-ce
+  #  - master@gitlab-org/gitlab-ee
+  #  - tags@gitlab-org/gitlab-ee
\ No newline at end of file

lib/tasks/ci/slack.rake

-namespace :ci do
-  namespace :slack do
-    desc "GitLab CI | Send slack notification on build failure"
-    task :error, [:channel, :error] do |t, args|
-      next unless !"#{ENV['CI_SLACK_WEBHOOK_URL']}".blank? && args.channel && args.error
-      Kernel.system "curl -X POST --data-urlencode 'payload={\"channel\": \"#{args.channel}\", \"username\": \"gitlab-ci\", \"text\": \"#{args.error}\", \"icon_emoji\": \":gitlab:\"}' $CI_SLACK_WEBHOOK_URL"
-    end
-  end
-end

scripts/notify_slack.sh

+#!/bin/bash
+# Sends Slack notification ERROR_MSG to CHANNEL
+# An env. variable CI_SLACK_WEBHOOK_URL needs to be set.
+
+CHANNEL=$1
+ERROR_MSG=$2
+
+if [ -z "$CHANNEL" ] || [ -z "$ERROR_MSG" ] || [ -z "$CI_SLACK_WEBHOOK_URL" ]; then
+    echo "Missing argument(s) - Use: $0 channel message"
+    echo "and set CI_SLACK_WEBHOOK_URL environment variable."
+else
+    curl -X POST --data-urlencode 'payload={"channel": "'"$CHANNEL"'", "username": "gitlab-ci", "text": "'"$ERROR_MSG"'", "icon_emoji": ":gitlab:"}' "$CI_SLACK_WEBHOOK_URL"
+fi
\ No newline at end of file