Fire an event on received ticket branch updates to trigger reindex
It would be useful to be able to push a complete repository with a
refs/gitblit/tickets branch and have Gitblit index all those tickets.
Additionally, it would be nice for the mirroring service to recognize
an incoming update to this ref and fire an event that can be processed
by the BranchTicketService, if so configured, to reindex the tickets.
A basic issue tracker styled as a hybrid of GitHub and BitBucket issues.
You may attach commits to an existing ticket or you can push a single
commit to create a *proposal* ticket.
Tickets keep track of patchsets (one or more commits) and allow patchset
rewriting (rebase, amend, squash) by detecing the non-fast-forward
update and assigning a new patchset number to the new commits.
Ticket tracker
--------------
The ticket tracker stores tickets as an append-only journal of changes.
The journals are deserialized and a ticket is built by applying the
journal entries. Tickets are indexed using Apache Lucene and all
queries and searches are executed against this Lucene index.
There is one trade-off to this persistence design: user attributions are
non-relational.
What does that mean? Each journal entry stores the username of the
author. If the username changes in the user service, the journal entry
will not reflect that change because the values are hard-coded.
Here are a few reasons/justifications for this design choice:
1. commit identifications (author, committer, tagger) are non-relational
2. maintains the KISS principle
3. your favorite text editor can still be your administration tool
Persistence Choices
-------------------
**FileTicketService**: stores journals on the filesystem
**BranchTicketService**: stores journals on an orphan branch
**RedisTicketService**: stores journals in a Redis key-value datastore
It should be relatively straight-forward to develop other backends
(MongoDB, etc) as long as the journal design is preserved.
Pushing Commits
---------------
Each push to a ticket is identified as a patchset revision. A patchset
revision may add commits to the patchset (fast-forward) OR a patchset
revision may rewrite history (rebase, squash, rebase+squash, or amend).
Patchset authors should not be afraid to polish, revise, and rewrite
their code before merging into the proposed branch.
Gitblit will create one ref for each patchset. These refs are updated
for fast-forward pushes or created for rewrites. They are formatted as
`refs/tickets/{shard}/{id}/{patchset}`. The *shard* is the last two
digits of the id. If the id < 10, prefix a 0. The *shard* is always
two digits long. The shard's purpose is to ensure Gitblit doesn't
exceed any filesystem directory limits for file creation.
**Creating a Proposal Ticket**
You may create a new change proposal ticket just by pushing a **single
commit** to `refs/for/{branch}` where branch is the proposed integration
branch OR `refs/for/new` or `refs/for/default` which both will use the
default repository branch.
git push origin HEAD:refs/for/new
**Updating a Patchset**
The safe way to update an existing patchset is to push to the patchset
ref.
git push origin HEAD:refs/heads/ticket/{id}
This ensures you do not accidentally create a new patchset in the event
that the patchset was updated after you last pulled.
The not-so-safe way to update an existing patchset is to push using the
magic ref.
git push origin HEAD:refs/for/{id}
This push ref will update an exisitng patchset OR create a new patchset
if the update is non-fast-forward.
**Rebasing, Squashing, Amending**
Gitblit makes rebasing, squashing, and amending patchsets easy.
Normally, pushing a non-fast-forward update would require rewind (RW+)
repository permissions. Gitblit provides a magic ref which will allow
ticket participants to rewrite a ticket patchset as long as the ticket
is open.
git push origin HEAD:refs/for/{id}
Pushing changes to this ref allows the patchset authors to rebase,
squash, or amend the patchset commits without requiring client-side use
of the *--force* flag on push AND without requiring RW+ permission to
the repository. Since each patchset is tracked with a ref it is easy to
recover from accidental non-fast-forward updates.
Features
--------
- Ticket tracker with status changes and responsible assignments
- Patchset revision scoring mechanism
- Update/Rewrite patchset handling
- Close-on-push detection
- Server-side Merge button for simple merges
- Comments with Markdown syntax support
- Rich mail notifications
- Voting
- Mentions
- Watch lists
- Querying
- Searches
- Partial miletones support
- Multiple backend options
Combining Dagger and Servlet 3 works really well on stock Tomcat and
Jetty but it is a troublesome combination on JEE containers with their
own ideas on how to instantiate classes. JBoss AS 7 has been
particularly nasty and it is just simpler to scaleback and stay with
Servlet 2.5 than it is to fight all permuations of containers.
Instead of using constructor DI, the servlets and filters each have an
inject(ObjectGaph) method which is automatically called during
initialization. Each servlet or filter is responsible for retrieving
the required dependency from the graph. The Dagger object graph is
created in the context listener and stuffed into the context as an
attribute.
Change-Id: Ib5714584fe73e2a6b9c6fda12af080a43356cbda
Define manager interfaces and update all of Gitblit to use managers
These manager interfaces define how the GitBlit singleton will
eventually be split into smaller component managers. The Wicket app and
all servlets have been updated to request the needed managers. There
are _very_ few method signature changes - although there are a handful.
This is a surgical sharding of responsibility based on a proof of
concept refactor. Instead of random references to GittBlit.self()
there are now precise references to the manager interface required to
accomplish some task. Some tasks may require references to multiple
managers.
The code is now littered with calls to GitBlit.getManager(class) and
those familiar with the code-base will no doubt notice the duplication
of methods from IUserService in IUserManager and the addition of
implementation methods in the GitBlit context class. When the
GitBlit class is broken apart and the existing external authentication
user service classes are refactored to AuthenticationService classes,
this will again simplify and flatten. But in order to safely and
cleanly modularize the stable code-base we will have to live with a
little duplication for a short while.
Change-Id: I7314ec8acaab2dcc6092785ed4434cc09fdbbe16
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
James Moger
David Ostrovsky
James Moger