fa73cbf5a7
Storing the foreign identifier of an imported issue in the database is a prerequisite to implement idempotent migrations or mirror for issues. It is a baby step towards mirroring that introduces a new table. At the moment when an issue is created by the Gitea uploader, it fails if the issue already exists. The Gitea uploader could be modified so that, instead of failing, it looks up the database to find an existing issue. And if it does it would update the issue instead of creating a new one. However this is not currently possible because an information is missing from the database: the foreign identifier that uniquely represents the issue being migrated is not persisted. With this change, the foreign identifier is stored in the database and the Gitea uploader will then be able to run a query to figure out if a given issue being imported already exists. The implementation of mirroring for issues, pull requests, releases, etc. can be done in three steps: 1. Store an identifier for the element being mirrored (issue, pull request...) in the database (this is the purpose of these changes) 2. Modify the Gitea uploader to be able to update an existing repository with all it contains (issues, pull request...) instead of failing if it exists 3. Optimize the Gitea uploader to speed up the updates, when possible. The second step creates code that does not yet exist to enable idempotent migrations with the Gitea uploader. When a migration is done for the first time, the behavior is not changed. But when a migration is done for a repository that already exists, this new code is used to update it. The third step can use the code created in the second step to optimize and speed up migrations. For instance, when a migration is resumed, an issue that has an update time that is not more recent can be skipped and only newly created issues or updated ones will be updated. Another example of optimization could be that a webhook notifies Gitea when an issue is updated. The code triggered by the webhook would download only this issue and call the code created in the second step to update the issue, as if it was in the process of an idempotent migration. The ForeignReferences table is added to contain local and foreign ID pairs relative to a given repository. It can later be used for pull requests and other artifacts that can be mirrored. Although the foreign id could be added as a single field in issues or pull requests, it would need to be added to all tables that represent something that can be mirrored. Creating a new table makes for a simpler and more generic design. The drawback is that it requires an extra lookup to obtain the information. However, this extra information is only required during migration or mirroring and does not impact the way Gitea currently works. The foreign identifier of an issue or pull request is similar to the identifier of an external user, which is stored in reactions, issues, etc. as OriginalPosterID and so on. The representation of a user is however different and the ability of users to link their account to an external user at a later time is also a logic that is different from what is involved in mirroring or migrations. For these reasons, despite some commonalities, it is unclear at this time how the two tables (foreign reference and external user) could be merged together. The ForeignID field is extracted from the issue migration context so that it can be dumped in files with dump-repo and later restored via restore-repo. The GetAllComments downloader method is introduced to simplify the implementation and not overload the Context for the purpose of pagination. It also clarifies in which context the comments are paginated and in which context they are not. The Context interface is no longer useful for the purpose of retrieving the LocalID and ForeignID since they are now both available from the PullRequest and Issue struct. The Reviewable and Commentable interfaces replace and serve the same purpose. The Context data member of PullRequest and Issue becomes a DownloaderContext to clarify that its purpose is not to support in memory operations while the current downloader is acting but is not otherwise persisted. It is, for instance, used by the GitLab downloader to store the IsMergeRequest boolean and sort out issues. --- [source](https://lab.forgefriends.org/forgefriends/forgefriends/-/merge_requests/36) Signed-off-by: Loïc Dachary <loic@dachary.org> Co-authored-by: Loïc Dachary <loic@dachary.org> |
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README.md
Gitea - Git with a cup of tea
View the chinese version of this document
Purpose
The goal of this project is to make the easiest, fastest, and most painless way of setting up a self-hosted Git service. Using Go, this can be done with an independent binary distribution across all platforms which Go supports, including Linux, macOS, and Windows on x86, amd64, ARM and PowerPC architectures. Want to try it before doing anything else? Do it with the online demo! This project has been forked from Gogs since 2016.11 but changed a lot.
Building
From the root of the source tree, run:
TAGS="bindata" make build
or if SQLite support is required:
TAGS="bindata sqlite sqlite_unlock_notify" make build
The build target is split into two sub-targets:
make backendwhich requires Go 1.17 or greater.make frontendwhich requires Node.js LTS or greater and Internet connectivity to download npm dependencies.
When building from the official source tarballs which include pre-built frontend files, the frontend target will not be triggered, making it possible to build without Node.js and Internet connectivity.
Parallelism (make -j <num>) is not supported.
More info: https://docs.gitea.io/en-us/install-from-source/
Using
./gitea web
NOTE: If you're interested in using our APIs, we have experimental support with documentation.
Contributing
Expected workflow is: Fork -> Patch -> Push -> Pull Request
NOTES:
- YOU MUST READ THE CONTRIBUTORS GUIDE BEFORE STARTING TO WORK ON A PULL REQUEST.
- If you have found a vulnerability in the project, please write privately to security@gitea.io. Thanks!
Translating
Translations are done through Crowdin. If you want to translate to a new language ask one of the managers in the Crowdin project to add a new language there.
You can also just create an issue for adding a language or ask on discord on the #translation channel. If you need context or find some translation issues, you can leave a comment on the string or ask on Discord. For general translation questions there is a section in the docs. Currently a bit empty but we hope fo fill it as questions pop up.
https://docs.gitea.io/en-us/translation-guidelines/
Further information
For more information and instructions about how to install Gitea, please look at our documentation. If you have questions that are not covered by the documentation, you can get in contact with us on our Discord server or create a post in the discourse forum.
We maintain a list of Gitea-related projects at gitea/awesome-gitea.
The hugo-based documentation theme is hosted at gitea/theme.
The official Gitea CLI is developed at gitea/tea.
Authors
Backers
Thank you to all our backers! 🙏 [Become a backer]
Sponsors
Support this project by becoming a sponsor. Your logo will show up here with a link to your website. [Become a sponsor]
FAQ
How do you pronounce Gitea?
Gitea is pronounced /ɡɪ’ti:/ as in "gi-tea" with a hard g.
Why is this not hosted on a Gitea instance?
We're working on it.
License
This project is licensed under the MIT License. See the LICENSE file for the full license text.
Screenshots
Looking for an overview of the interface? Check it out!
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