Auto update downstream server version

2 files changed, 70 insertions, 0 deletions

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index be4098735..963ff2206 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -105,3 +105,12 @@ codeclimate:
 
 ruby-2.3-golang-1.8-git-2.8: *build_image
 ruby-2.3-golang-1.8-git-2.13: *build_image
+
+# Create a MR in GitLab-CE when releasing a Gitaly version
+update-downstream-server-version:
+  stage: publish
+  only:
+    - tags
+  script:
+    - ruby _support/update-downstream-server-version.rb
+  allow_failure: true
diff --git a/_support/update-downstream-server-version.rb b/_support/update-downstream-server-version.rb
new file mode 100755
index 000000000..7733e5f36
--- /dev/null
+++ b/_support/update-downstream-server-version.rb
@@ -0,0 +1,61 @@
+#!/usr/bin/env ruby
+
+require 'net/http'
+require 'uri'
+require 'json'
+
+def gitlab_api(url, body)
+  uri = URI.parse(url)
+
+  header = {
+    'Content-Type': 'application/json',
+    'PRIVATE-TOKEN': ENV['PRIVATE_TOKEN']
+  }
+
+  # Create the HTTP objects
+  Net::HTTP.start(uri.host, uri.port, use_ssl: uri.scheme == 'https') do |http|
+    request = Net::HTTP::Post.new(uri.request_uri, header)
+    request.body = body.to_json
+
+    response = http.request(request)
+    raise "Request to #{url} failed: #{response.body}" unless Integer(response.code) < 400
+    response.body
+  end
+end
+
+def update_tag(project_id, tag_version)
+  commit = {
+    "branch": "gitaly-version-#{tag_version}",
+    "start_branch": "master",
+    "commit_message": "Update Gitaly version to #{tag_version}",
+    "actions": [{
+      "action": "update",
+      "file_path": "GITALY_SERVER_VERSION",
+      "content": "#{tag_version}"
+    }]
+  }
+
+  gitlab_api("https://gitlab.com/api/v4/projects/#{project_id}/repository/commits", commit)
+end
+
+def create_mr(project_id, tag_version, assignee_id)
+  merge_request = {
+    "source_branch": "gitaly-version-#{tag_version}",
+    "target_branch": "master",
+    "title": "Upgrade Gitaly to #{tag_version}",
+    "assignee_id": assignee_id,
+    "description": "Upgrade Gitaly to #{tag_version}",
+    "labels": "Gitaly",
+    "remove_source_branch": true,
+    "squash": true
+  }
+
+  gitlab_api("https://gitlab.com/api/v4/projects/#{project_id}/merge_requests", merge_request)
+end
+
+project_id = ENV["GITLAB_CE_PROJECT_ID"]
+tag_version = ENV["CI_COMMIT_TAG"]
+assignee_id = ENV["GITLAB_USER_ID"]
+
+update_tag(project_id, tag_version)
+create_mr(project_id, tag_version, assignee_id)