Merge branch '2989-run-cicd-pipelines-on-a-schedule-idea1-basic-backend-implementation' into 'master'

Resolve "Run CI/CD pipelines on a schedule" - "Basic backend implementation"

See merge request !10133

3 files changed, 37 insertions, 1 deletions

diff --git a/lib/gitlab/ci/cron_parser.rb b/lib/gitlab/ci/cron_parser.rb
new file mode 100644
index 00000000000..a3cc350ef22
--- /dev/null
+++ b/lib/gitlab/ci/cron_parser.rb
@@ -0,0 +1,34 @@
+module Gitlab
+  module Ci
+    class CronParser
+      VALID_SYNTAX_SAMPLE_TIME_ZONE = 'UTC'.freeze
+      VALID_SYNTAX_SAMPLE_CRON = '* * * * *'.freeze
+
+      def initialize(cron, cron_timezone = 'UTC')
+        @cron = cron
+        @cron_timezone = cron_timezone
+      end
+
+      def next_time_from(time)
+        @cron_line ||= try_parse_cron(@cron, @cron_timezone)
+        @cron_line.next_time(time).in_time_zone(Time.zone) if @cron_line.present?
+      end
+
+      def cron_valid?
+        try_parse_cron(@cron, VALID_SYNTAX_SAMPLE_TIME_ZONE).present?
+      end
+
+      def cron_timezone_valid?
+        try_parse_cron(VALID_SYNTAX_SAMPLE_CRON, @cron_timezone).present?
+      end
+
+      private
+
+      def try_parse_cron(cron, cron_timezone)
+        Rufus::Scheduler.parse("#{cron} #{cron_timezone}")
+      rescue
+        # noop
+      end
+    end
+  end
+end
diff --git a/lib/gitlab/import_export/import_export.yml b/lib/gitlab/import_export/import_export.yml
index f69288f7d67..f5e1e385ff9 100644
--- a/lib/gitlab/import_export/import_export.yml
+++ b/lib/gitlab/import_export/import_export.yml
@@ -39,7 +39,8 @@ project_tree:
       - :author
       - :events
     - :statuses
-  - :triggers
+  - triggers:
+    - :trigger_schedule
   - :deploy_keys
   - :services
   - :hooks
diff --git a/lib/gitlab/import_export/relation_factory.rb b/lib/gitlab/import_export/relation_factory.rb
index fb43e7ccdbb..2ba12f5f924 100644
--- a/lib/gitlab/import_export/relation_factory.rb
+++ b/lib/gitlab/import_export/relation_factory.rb
@@ -5,6 +5,7 @@ module Gitlab
                     pipelines: 'Ci::Pipeline',
                     statuses: 'commit_status',
                     triggers: 'Ci::Trigger',
+                    trigger_schedule: 'Ci::TriggerSchedule',
                     builds: 'Ci::Build',
                     hooks: 'ProjectHook',
                     merge_access_levels: 'ProtectedBranch::MergeAccessLevel',