GitLab Synchronization: Initial commit

services/web/modules/gitlab-sync/index.mjs

@@ -0,0 +1,55 @@
+import Settings from '@overleaf/settings'
+import Modules from '../../app/src/infrastructure/Modules.mjs'
+import logger from '@overleaf/logger'
+
+let GitLabSyncModule = {}
+if (process.env.GITLAB_SYNC_ENABLED?.toLowerCase() === 'true') {
+  logger.debug({}, 'Enabling GitLab Sync module')
+
+  // The GITLAB_URL variable has to be set for this module to work, otherwise the module will not be enabled
+  if (process.env.GITLAB_SYNC_URL === undefined || process.env.GITLAB_SYNC_URL === '') {
+    logger.warn({}, 'GitLab Sync module is enabled but GITLAB_SYNC_URL is not set, stopping module initialization')
+  } else {
+    const [{ default: GitLabSyncRouter },
+           { default: SyncStateManager },
+           { default: TokenManager }
+          ] =
+      await Promise.all([
+        import('./app/src/GitLabSyncRouter.mjs'),
+        import('./app/src/SyncStateManager.mjs'),
+        import('./app/src/TokenManager.mjs'),
+      ])
+  
+    const siteUrl = Settings.siteUrl.replace(/\/+$/, '') || 'http://localhost'
+    Settings.gitlabSync = {
+      clientID: process.env.GITLAB_SYNC_CLIENT_ID,
+      clientSecret: process.env.GITLAB_SYNC_CLIENT_SECRET,
+      callbackURL: `${siteUrl}/user/gitlab-sync/oauth2/callback`,
+    },
+  
+    // Delete project sync state from mongo (hook 'projectExpired')
+    Modules.hooks.attach('projectExpired', async projectId => {
+      try {
+        await SyncStateManager.removeProjectState(projectId)
+        logger.debug({ projectId }, 'on project expire: removed Git sync state')
+      } catch (err) {
+        logger.warn({ projectId, err }, 'on project expire: failed to remove Git sync state')
+      }
+    })
+  
+    // Delete user gitlab token from mongo (hook 'expireDeletedUser')
+    Modules.hooks.attach('expireDeletedUser', async userId => {
+      try {
+        await TokenManager.removeUserToken(userId)
+      } catch (err) {
+        logger.warn({ userId, err }, 'on user expire: failed removing user token')
+      }
+    })
+  
+    GitLabSyncModule = {
+      router: GitLabSyncRouter,
+    }
+  }
+}
+
+export default GitLabSyncModule