GRN2-211: Added a maintenance mode (#675)

* Added a maintenance mode

* Cleaned up dockerignore file

* Added branding to maintenance page

* Fixed branding

.dockerignore

@@ -16,9 +16,12 @@ tmp
 public/assets
 public/b
 coverage/
-spec/tmp
 .rvmrc
-.byebug_history
 vendor/bundle
 .bundle
-Jenkinsfile
+Dockerfile
+.gitlab-ci.yml
+.rubocop.yml
+.travis.yml
+spec
+test

Jenkinsfile

@@ -1,92 +0,0 @@
-def project = 'ci-cd-for-bn'
-def appName = 'greenlight'
-def greenlightVersion = 'v2'
-def label = "jenkins-execution-worker-${UUID.randomUUID().toString()}"
-def releaseBuild = env.TAG_NAME && env.TAG_NAME.contains("release")
-
-String convert(long millsToConvert){
-   long seconds, minutes, hours;
-   seconds = millsToConvert / 1000;
-   minutes = seconds / 60;
-   seconds = seconds % 60;
-   hours = minutes / 60;
-   minutes = minutes % 60;
-   return String.format("%02d:%02d:%02d", hours, minutes, seconds);
-}
-
-
-if (releaseBuild) {
-  kubeCloud = "production"
-  kubecSecretsId = 'greenlight-prod-secrets'
-} else {
-  kubeCloud = "staging"
-  kubecSecretsId = 'greenlight-staging-secrets'
-}
-
-properties([
-  pipelineTriggers([
-    githubPush()
-  ])
-])
-
-podTemplate(label: label, cloud: "${kubeCloud}", containers: [
-  containerTemplate(name: 'ruby', image: "ruby:2.5.1", command: 'cat', ttyEnabled: true),
-  containerTemplate(name: 'gcloud', image: "gcr.io/ci-cd-for-bn/gcloud-docker", command: 'cat', ttyEnabled: true),
-  containerTemplate(name: 'kubectl', image: 'gcr.io/cloud-builders/kubectl', command: 'cat', ttyEnabled: true)
-],
-volumes: [
-  hostPathVolume(mountPath: '/usr/bin/docker', hostPath: '/usr/bin/docker'),
-  hostPathVolume(mountPath: '/var/run/docker.sock', hostPath: '/var/run/docker.sock')
-]){
-  node(label) {
-    try {
-      slackSend (color: '#FFFF00', message: "STARTED: Job '${env.JOB_NAME} [${env.BUILD_NUMBER}]' (${env.BUILD_URL})")
-      def myRepo = checkout scm
-      def gitCommit = myRepo.GIT_COMMIT
-      def gitBranch = myRepo.GIT_BRANCH
-      def gitTag = env.TAG_NAME
-      def shortGitCommit = "${gitCommit[0..10]}"
-      def previousGitCommit = myRepo.GIT_PREVIOUS_COMMIT
-      def imageTag = "gcr.io/${project}/${appName}:${gitBranch}.${env.BUILD_NUMBER}.${gitCommit}"
-      def stageBuild = (kubeCloud == "staging" && gitBranch == "master")
-
-      stage('Test') {
-        container('ruby') {
-          sh "bundle install && bundle exec rubocop && bundle exec rspec "
-        }
-      }
-
-      stage('Build and Publish') {
-        container('gcloud') {
-          withCredentials([file(credentialsId: 'cloud-datastore-user-account-creds', variable: 'FILE'), string(credentialsId: 'DOCKER_USER', variable: 'DOCKER_USER'), string(credentialsId: 'DOCKER_PASSWORD', variable: 'DOCKER_PASSWORD')]) {
-            sh "gcloud auth activate-service-account --key-file=$FILE"
-            if (stageBuild) {
-              sh "sed -i 's/VERSION =.*/VERSION = \"${gitBranch} (${gitCommit.substring(0, 7)})\"/g' config/initializers/version.rb"
-              sh "gcloud docker -- build -t ${imageTag} -t 'bigbluebutton/${appName}:master' . && gcloud docker -- push ${imageTag}"
-            } else if (releaseBuild) {
-              sh "sed -i 's/VERSION =.*/VERSION = \"${gitTag.substring(8)}\"/g' config/initializers/version.rb"
-              imageTag = "gcr.io/${project}/${appName}:${gitTag}"
-              sh "gcloud docker -- build -t ${imageTag} -t 'bigbluebutton/${appName}:${greenlightVersion}' -t 'bigbluebutton/${appName}:${gitTag}' . && gcloud docker -- push ${imageTag}"
-            }
-          }
-        }
-      }
-
-      stage('Deploy') {
-        container('kubectl') {
-           if (stageBuild || releaseBuild) {
-              withCredentials([file(credentialsId: kubecSecretsId, variable: 'FILE')]) {
-                 sh '''
-                   kubectl apply -f $FILE
-                 '''
-              }
-              sh "kubectl set image deployments/gl-deployment gl=${imageTag}"
-           }
-        }
-      }
-      slackSend (color: '#00FF00', message: "SUCCESSFUL: Job '${env.JOB_NAME} [${env.BUILD_NUMBER}]' in ${convert(currentBuild.duration)} (${env.BUILD_URL})")
-    } catch(e) {
-       slackSend (color: '#FF0000', message: "FAILED: Job '${env.JOB_NAME} [${env.BUILD_NUMBER}]' message: ${e} (${env.BUILD_URL})")
-    }
-  }
-}

app/controllers/application_controller.rb

@@ -26,10 +26,11 @@ class ApplicationController < ActionController::Base
   # Force SSL for loadbalancer configurations.
   before_action :redirect_to_https
 
+  before_action :set_user_domain
+  before_action :maintenance_mode?
   before_action :migration_error?
   before_action :set_locale
   before_action :check_admin_password
-  before_action :set_user_domain
   before_action :check_user_role
 
   # Manually handle BigBlueButton errors
@@ -45,6 +46,17 @@ class ApplicationController < ActionController::Base
     render :migration_error unless ENV["DB_MIGRATE_FAILED"].blank?
   end
 
+  def maintenance_mode?
+    if ENV["MAINTENANCE_MODE"].present?
+      render "errors/greenlight_error", status: 503, formats: :html,
+        locals: {
+          status_code: 503,
+          message: I18n.t("errors.maintenance.message"),
+          help: I18n.t("errors.maintenance.help"),
+        }
+    end
+  end
+
   # Sets the appropriate locale.
   def set_locale
     update_locale(current_user)
@@ -140,6 +152,9 @@ class ApplicationController < ActionController::Base
       begin
         retrieve_provider_info(@user_domain, 'api2', 'getUserGreenlightCredentials')
       rescue => e
+        # Use the default site settings
+        @user_domain = "greenlight"
+
         if e.message.eql? "No user with that id exists"
           render "errors/greenlight_error", locals: { message: I18n.t("errors.not_found.user_not_found.message"),
             help: I18n.t("errors.not_found.user_not_found.help") }

app/controllers/themes_controller.rb

@@ -17,6 +17,7 @@
 # with BigBlueButton; if not, see <http://www.gnu.org/licenses/>.
 
 class ThemesController < ApplicationController
+  skip_before_action :maintenance_mode?
   before_action :provider_settings
 
   # GET /primary

config/locales/en.yml

@@ -121,6 +121,9 @@ en:
     internal:
       message: Looks like something went wrong on our end.
       help: The error has been logged, we'll take a look!
+    maintenance:
+      message: Sorry, we're down for maintenance.
+      help: We'll be back soon!
     migration_error:
       contact_admin: If you are not an administrator, please contact one.
       continue: I'd like to stay using 1.0.