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There were two cases that could be problematic: 1. Because sometimes AuthorizedProjectsWorker would be scheduled in a transaction it was possible for a job to run/complete before a COMMIT; resulting in it either producing an error, or producing no new data. 2. When scheduling jobs the code would not wait until completion. This could lead to a user creating a project and then immediately trying to push to it. Usually this will work fine, but given enough load it might take a few seconds before a user has access. The first one is problematic, the second one is mostly just annoying (but annoying enough to warrant a solution). This commit changes two things to deal with this: 1. Sidekiq scheduling now takes places after a COMMIT, this is ensured by scheduling using Rails' after_commit hook instead of doing so in an arbitrary method. 2. When scheduling jobs the calling thread now waits for all jobs to complete. Solution 2 requires tracking of job completions. Sidekiq provides a way to find a job by its ID, but this involves scanning over the entire queue; something that is very in-efficient for large queues. As such a more efficient solution is necessary. There are two main Gems that can do this in a more efficient manner: * sidekiq-status * sidekiq_status No, this is not a joke. Both Gems do a similar thing (but slightly different), and the only difference in their name is a dash vs an underscore. Both Gems however provide far more than just checking if a job has been completed, and both have their problems. sidekiq-status does not appear to be actively maintained, with the last release being in 2015. It also has some issues during testing as API calls are not stubbed in any way. sidekiq_status on the other hand does not appear to be very popular, and introduces a similar amount of code. Because of this I opted to write a simple home grown solution. After all, all we need is storing a job ID somewhere so we can efficiently look it up; we don't need extra web UIs (as provided by sidekiq-status) or complex APIs to update progress, etc. This is where Gitlab::SidekiqStatus comes in handy. This namespace contains some code used for tracking, removing, and looking up job IDs; all without having to scan over an entire queue. Data is removed explicitly, but also expires automatically just in case. Using this API we can now schedule jobs in a fork-join like manner: we schedule the jobs in Sidekiq, process them in parallel, then wait for completion. By using Sidekiq we can leverage all the benefits such as being able to scale across multiple cores and hosts, retrying failed jobs, etc. The one downside is that we need to make sure we can deal with unexpected increases in job processing timings. To deal with this the class Gitlab::JobWaiter (used for waiting for jobs to complete) will only wait a number of seconds (30 by default). Once this timeout is reached it will simply return. For GitLab.com almost all AuthorizedProjectWorker jobs complete in seconds, only very rarely do we spike to job timings of around a minute. These in turn seem to be the result of external factors (e.g. deploys), in which case a user is most likely not able to use the system anyway. In short, this new solution should ensure that jobs are processed properly and that in almost all cases a user has access to their resources whenever they need to have access. |
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| .github | ||
| .gitlab | ||
| app | ||
| bin | ||
| builds | ||
| changelogs | ||
| config | ||
| db | ||
| doc | ||
| docker | ||
| features | ||
| fixtures/emojis | ||
| generator_templates | ||
| lib | ||
| log | ||
| public | ||
| rubocop | ||
| scripts | ||
| shared | ||
| spec | ||
| tmp | ||
| vendor | ||
| .csscomb.json | ||
| .eslintignore | ||
| .eslintrc | ||
| .flayignore | ||
| .foreman | ||
| .gitattributes | ||
| .gitignore | ||
| .gitlab-ci.yml | ||
| .haml-lint.yml | ||
| .mailmap | ||
| .pkgr.yml | ||
| .rspec | ||
| .rubocop.yml | ||
| .rubocop_todo.yml | ||
| .ruby-version | ||
| .scss-lint.yml | ||
| CHANGELOG.md | ||
| CONTRIBUTING.md | ||
| GITLAB_SHELL_VERSION | ||
| GITLAB_WORKHORSE_VERSION | ||
| Gemfile | ||
| Gemfile.lock | ||
| LICENSE | ||
| MAINTENANCE.md | ||
| PROCESS.md | ||
| Procfile | ||
| README.md | ||
| Rakefile | ||
| VERSION | ||
| config.ru | ||
| doc_styleguide.md | ||
| docker-compose.yml | ||
| package.json | ||
README.md
GitLab
Canonical source
The canonical source of GitLab Community Edition is hosted on GitLab.com.
Open source software to collaborate on code
To see how GitLab looks please see the features page on our website.
- Manage Git repositories with fine grained access controls that keep your code secure
- Perform code reviews and enhance collaboration with merge requests
- Complete continuous integration (CI) and CD pipelines to builds, test, and deploy your applications
- Each project can also have an issue tracker, issue board, and a wiki
- Used by more than 100,000 organizations, GitLab is the most popular solution to manage Git repositories on-premises
- Completely free and open source (MIT Expat license)
Hiring
We're hiring developers, support people, and production engineers all the time, please see our jobs page.
Editions
There are two editions of GitLab:
- GitLab Community Edition (CE) is available freely under the MIT Expat license.
- GitLab Enterprise Edition (EE) includes extra features that are more useful for organizations with more than 100 users. To use EE and get official support please become a subscriber.
Website
On about.gitlab.com you can find more information about:
- Subscriptions
- Consultancy
- Community
- Hosted GitLab.com use GitLab as a free service
- GitLab Enterprise Edition with additional features aimed at larger organizations.
- GitLab CI a continuous integration (CI) server that is easy to integrate with GitLab.
Requirements
Please see the requirements documentation for system requirements and more information about the supported operating systems.
Installation
The recommended way to install GitLab is with the Omnibus packages on our package server. Compared to an installation from source, this is faster and less error prone. Just select your operating system, download the respective package (Debian or RPM) and install it using the system's package manager.
There are various other options to install GitLab, please refer to the installation page on the GitLab website for more information.
You can access a new installation with the login root and password 5iveL!fe, after login you are required to set a unique password.
Contributing
GitLab is an open source project and we are very happy to accept community contributions. Please refer to CONTRIBUTING.md for details.
Install a development environment
To work on GitLab itself, we recommend setting up your development environment with the GitLab Development Kit. If you do not use the GitLab Development Kit you need to install and setup all the dependencies yourself, this is a lot of work and error prone. One small thing you also have to do when installing it yourself is to copy the example development unicorn configuration file:
cp config/unicorn.rb.example.development config/unicorn.rb
Instructions on how to start GitLab and how to run the tests can be found in the development section of the GitLab Development Kit.
Software stack
GitLab is a Ruby on Rails application that runs on the following software:
- Ubuntu/Debian/CentOS/RHEL/OpenSUSE
- Ruby (MRI) 2.3
- Git 2.8.4+
- Redis 2.8+
- PostgreSQL (preferred) or MySQL
For more information please see the architecture documentation.
UX design
Please adhere to the UX Guide when creating designs and implementing code.
Third-party applications
There are a lot of third-party applications integrating with GitLab. These include GUI Git clients, mobile applications and API wrappers for various languages.
GitLab release cycle
For more information about the release process see the release documentation.
Upgrading
For upgrading information please see our update page.
Documentation
All documentation can be found on docs.gitlab.com/ce/.
Getting help
Please see Getting help for GitLab on our website for the many options to get help.
Is it any good?
Is it awesome?
Thanks for asking this question Joshua. These people seem to like it.