Implement mirror executor (issue-5)

The mirror executor will fetch ref updates for repository mirrors.  This
feature is disabled by default and can be enabled by setting
git.enableMirroring=true.  The period between update checks is
configurable, but it is global.  An individual rpeository may not set
it's own update schedule.

Requirements:
1. you must manually clone the repository using native git
   git clone --mirror git://somewhere.com/myrepo.git
2. the "origin" remote must be the mirror source
3. the "origin" repository must be accessible without authentication OR
   the credentials must be embedded in the origin url (not recommended)

Notes:
1. "origin" SSH urls are untested and not likely to work
2. mirrors cloned while Gitblit is running are likely to require
   clearing the gitblit cache (link on the repositories page of an
   administrator account)
3. Gitblit will automatically repair any invalid fetch refspecs with a
   "//" sequence.

Change-Id: I4bbe3fb2df106366ae4c2313596d0fab0dfcac46

1 files changed, 6 insertions, 2 deletions

diff --git a/releases.moxie b/releases.moxie
index 1832284f..a3b5ee4b 100644
--- a/releases.moxie
+++ b/releases.moxie
@@ -16,6 +16,7 @@ r20: {
 	- Fix error on generating activity page when there is no activity
 	- Fix raw page content type of binaries when running behind a reverse proxy
     changes:
+	- Gitblit now rejects pushes to mirror repositories (issue-5)
 	- Personal repository prefix (~) is now configurable (issue-265)
 	- Reversed line links in blob view (issue-309)
 	- Dashboard and Activity pages now obey the web.generateActivityGraph setting (issue-310)
@@ -24,11 +25,12 @@ r20: {
 	- Change the WAR baseFolder context parameter to a JNDI env-entry to improve enterprise deployments
 	- Removed internal Gitblit ref exclusions in the upload pack
 	- Removed "show readme" setting in favor of automatic detection
-	- Support plain text "readme" files
+	- Support plain text, markdown, confluence, mediawiki, textile, tracwiki, or twiki "readme" files
 	- Determine best commit id (e.g. "master") for the tree and docs pages and use that in links
-	- By default GO will now bind to all interfaces for both http and https connectors.  This simplifies setup for first-time users.
+	- By default GO will now bind to all interfaces for both http and https connectors.  This simplifies setup for first-time users.	
 	- Removed docs indicator on the repositories page
     additions:
+	- Added an optional MirrorExecutor which will periodically fetch ref updates from source repositories for mirrors (issue-5).  Repositories must be manually cloned using native git and "--mirror".
 	- Added branch graph image servlet based on EGit's branch graph renderer (issue-194)
 	- Added option to render Markdown commit messages (issue-203)
 	- Added setting to control creating a repository as --shared on Unix servers (issue-263)
@@ -47,7 +49,9 @@ r20: {
     settings:
     - { name: 'git.createRepositoriesShared', defaultValue: 'false' }
     - { name: 'git.allowAnonymousPushes', defaultValue: 'false' }
+	- { name: 'git.enableMirroring', defaultValue: 'false' }
 	- { name: 'git.defaultAccessRestriction', defaultValue: 'PUSH' }
+	- { name: 'git.mirrorPeriod', defaultValue: '30 mins' }
 	- { name: 'web.commitMessageRenderer', defaultValue: 'plain' }
 	- { name: 'web.showBranchGraph', defaultValue: 'true' }
 	- { name: 'server.redirectToHttpsPort', defaultValue: 'true' }