👷 add job to merge main into next major feature branch (v6)

.gitlab-ci.yml

@@ -6,6 +6,7 @@ variables:
   CI_IMAGE: '$BUILD_STABLE_REGISTRY/ci/$APP:$CURRENT_CI_IMAGE'
   GIT_REPOSITORY: '[email protected]:DataDog/browser-sdk.git'
   MAIN_BRANCH: 'main'
+  NEXT_MAJOR_BRANCH: 'v6'
   CHROME_PACKAGE_VERSION: 127.0.6533.72-1
 
 cache:
@@ -433,7 +434,18 @@ merge-into-staging:
     - eval $(ssh-agent -s)
   script:
     - yarn
-    - node scripts/staging-ci/merge-into-staging.js
+    - node scripts/update-branch.js $CURRENT_STAGING
+
+merge-into-next-major:
+  stage: pre-deploy
+  extends:
+    - .base-configuration
+    - .main
+  before_script:
+    - eval $(ssh-agent -s)
+  script:
+    - yarn
+    - node scripts/update-branch.js $NEXT_MAJOR_BRANCH
 
 check-staging-merge:
   stage: test

scripts/update-branch.js

@@ -0,0 +1,61 @@
+'use strict'
+
+const { parseArgs } = require('node:util')
+const { printLog, runMain, fetchHandlingError } = require('./lib/execution-utils')
+const { command } = require('./lib/command')
+
+const REPOSITORY = process.env.APP
+const DEVFLOW_AUTH_TOKEN = command`authanywhere --audience sdm --raw`.run()
+const DEVFLOW_API_URL = 'https://devflow-api.us1.ddbuild.io/internal/api/v2/devflow/execute/'
+const SUCESS_FEEDBACK_LEVEL = 'FEEDBACK_LEVEL_INFO'
+
+runMain(async () => {
+  const args = parseArgs({ allowPositionals: true })
+  const [branch] = args.positionals
+
+  await updateBranch(branch)
+
+  // `update-branch` allways skips CI, so we need to trigger it manually
+  await triggerCi(branch)
+})
+
+async function updateBranch(branch) {
+  const message = await devFlow('update-branch', { branch })
+
+  printLog(message)
+}
+
+async function triggerCi(branch) {
+  const message = await devFlow('trigger-ci', { ref: branch })
+
+  printLog(message)
+}
+
+async function devFlow(action, options) {
+  const params = getDevFlowURLSearchParams(options)
+  const rawResponse = await fetchHandlingError(`${DEVFLOW_API_URL}/${action}?${params}`, {
+    headers: {
+      Authorization: `Bearer ${DEVFLOW_AUTH_TOKEN}`,
+    },
+  })
+
+  const jsonResponse = await rawResponse.json()
+
+  const isSuccess = jsonResponse.state.feedbacks[0].level === SUCESS_FEEDBACK_LEVEL
+  const message = jsonResponse.state.feedbacks[0].message
+
+  if (!isSuccess) {
+    throw new Error(message)
+  }
+
+  return message
+}
+
+function getDevFlowURLSearchParams(options) {
+  const params = new URLSearchParams({
+    repository: REPOSITORY,
+    ...options,
+  })
+
+  return params.toString()
+}