[Zuul] Adding periodic layout.yaml update

Change-Id: I6a283c2d96f135b48456dd5529aa3acfb19cb2f7

murano-apps/Zuul/package/Classes/Zuul.yaml

@@ -75,6 +75,8 @@ Methods:
           - $linux.runCommand($.instance.agent, 'service zuul start')
           - $linux.runCommand($.instance.agent, 'service zuul-merger restart')
 
+          - $._switchProjectConfig()
+          - $._createPeriodicLayoutUpdate()
           - $._environment.reporter.report($this, 'Zuul is available at http://{0}:80'.format($host))
           - $.setAttr(deployed, true)
 
@@ -91,6 +93,31 @@ Methods:
       - $.instance.setHieraValue('gerrit_user', 'zuul')
       - $.instance.setHieraValue('gerrit_ssh_host_key', $.gerrit.instance.getHieraValue('gerrit_ssh_rsa_pubkey_contents'))
 
+  _switchProjectConfig:
+    Body:
+      - $resources: new(sys:Resources)
+      - $linux: new(conf:Linux)
+      - $script: $resources.string('switch_to_local_project_config.sh')
+      - $._environment.reporter.report($this, '[Zuul] Switching to project-config from installed Gerrit...')
+      - $projectConfigURL: format(
+          'ssh://{0}@{1}:29418/open-paas/project-config', 
+          $.instance.getHieraValue('gerrit_user'),
+          $.instance.getHieraValue('gerrit_server')
+         )
+      - $.instance.setHieraValue('project_config_repo', $projectConfigURL)
+      - $linux.runCommand($.instance.agent, $script)
+
+  _createPeriodicLayoutUpdate:
+    Body:
+     - $resources: new(sys:Resources)
+     - $linux: new(conf:Linux)
+     - $script: $resources.string('update_layout.sh')
+     - $._environment.reporter.report($this, '[Zuul] Creating autoupdating layout.yaml file...')
+     - $linux.putFile($.instance.agent, $script, '/usr/local/bin/update_layout.sh')
+     - $manifest: $resources.string('update_layout.pp')
+     - $linux.putFile($.instance.agent, $manifest, '/usr/local/bin/update_layout.pp')
+     - $linux.runCommand($.instance.agent, 'puppet apply /usr/local/bin/update_layout.pp')
+
   destroy:
     Body:
       - $.reportDestroyed()

murano-apps/Zuul/package/Resources/switch_to_local_project_config.sh

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+
+REPO_URL=$(hiera -c /etc/puppet/hiera.yaml project_config_repo)
+
+cp /var/lib/zuul/ssh/id_rsa /home/zuul/.ssh/id_rsa && chown zuul:zuul /home/zuul/.ssh/id_rsa
+
+cd /etc/project-config
+git remote set-url origin "$REPO_URL"
+git config --global user.email "zuul@example.com"
+git config --global user.name "Zuul"
+
+chown -R zuul:zuul /etc/project-config

murano-apps/Zuul/package/Resources/update_layout.pp

@@ -0,0 +1,7 @@
+cron { "update_layout":
+  user    => 'root',
+  ensure  => present,
+  command => "bash /usr/local/bin/update_layout.sh",
+  hour    => '*',
+  minute  => '*/5',
+}

murano-apps/Zuul/package/Resources/update_layout.sh

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+
+cd /etc/project-config
+
+# Check for new changes.
+su zuul -c "git pull"
+
+sha_from_repo=$(sha1sum zuul/layout.yaml | awk '{print $1}')
+sha_local=$(sha1sum /etc/zuul/layout/layout.yaml | awk '{print $1}')
+
+# Determine whether a change is made.
+if [ "$sha_local" != "$sha_from_repo" ]; then
+  cp zuul/layout.yaml /etc/zuul/layout/layout.yaml
+  service zuul force-reload
+fi