3a825ef22c
This management command creates the same indexes as migrations 82, 83, and 95, which are all indexes on the huge UserMessage table. (*) This command quickly no-ops with clear messaging when the indexes already exist, so it's idempotent in that regard. (If somebody somehow creates an index by the same name incorrectly, they can always drop it in dbshell and re-run this command.) If any of the migrations have not been run, which we detect simply by the existence of the indexes, then we create them using a `CREATE INDEX CONCURRENTLY` command. This functionality in postgres allows you to create indexes against large tables without disrupting queries against those tables. The tradeoff here is that creating indexes concurrently takes significantly longer than doing them non-concurrently. Since most tables are small, we typically just use regular Django migrations and run them during a brief interval while the app is down. For indexes on big tables, we will want to run this command as part of the upgrade process, and we will want to run it while the app is still up, otherwise it's pointless. All the code in create_indexes() is literally copy/pasted from the relevant migrations, and that scheme should work going forward. (It uses a different implementation of create_index_if_not_exist than the migrations use, but the code is identical lexically in the function.) If we ever do major restructuring of our large tables, such as UserMessage, and we end up droppping some of these indexes, then we will need to make this command migrations-aware. For now it's safe to assume that indexes are generally additive in nature, and the sooner we create them during the upgrade process, the better. (*) UserMessage is huge for large installations, of course. |
||
|---|---|---|
| .tx | ||
| analytics | ||
| confirmation | ||
| corporate | ||
| docs | ||
| frontend_tests | ||
| pgroonga | ||
| puppet | ||
| requirements | ||
| scripts | ||
| static | ||
| templates | ||
| tools | ||
| zerver | ||
| zilencer | ||
| zproject | ||
| .codecov.yml | ||
| .coveralls.yml | ||
| .editorconfig | ||
| .eslintignore | ||
| .eslintrc.json | ||
| .gitattributes | ||
| .gitignore | ||
| .gitlint | ||
| .npmignore | ||
| .travis.yml | ||
| CODE_OF_CONDUCT.md | ||
| Dockerfile | ||
| LICENSE | ||
| manage.py | ||
| package.json | ||
| README.md | ||
| Vagrantfile | ||
| version.py | ||
| yarn.lock | ||
Zulip overview | Community | Installing for dev | Installing for production | Ways to contribute | How to get involved | License
Zulip overview
Zulip is a powerful, open source group chat application. Written in Python and using the Django framework, Zulip supports both private messaging and group chats via conversation streams.
Zulip also supports fast search, drag-and-drop file uploads, image previews, group private messages, audible notifications, missed-message emails, desktop apps, and much more.
Further information on the Zulip project and its features can be found at https://www.zulip.org.
Community
There are several places online where folks discuss Zulip.
-
The primary place is the Zulip development community Zulip server at chat.zulip.org.
-
For Google Summer of Code students and applicants, we have a mailing list for help, questions, and announcements. But it's often simpler to visit chat.zulip.org instead.
-
We have a public development discussion mailing list, zulip-devel, which is currently pretty low traffic because most discussions happen in our public Zulip instance. We use it to announce Zulip developer community gatherings and ask for feedback on major technical or design decisions. It has several hundred subscribers, so you can use it to ask questions about features or possible bugs, but please don't use it ask for generic help getting started as a contributor (e.g. because you want to do Google Summer of Code). The rest of this page covers how to get involved in the Zulip project in detail.
-
Zulip also has a blog and twitter account.
-
Last but not least, we use GitHub to track Zulip-related issues (and store our code, of course). Anybody with a GitHub account should be able to create Issues there pertaining to bugs or enhancement requests. We also use Pull Requests as our primary mechanism to receive code contributions.
The Zulip community has a Code of Conduct.
Installing the Zulip Development environment
The Zulip development environment is the recommended option for folks interested in trying out Zulip. This is documented in the developer installation guide.
Running Zulip in production
Zulip in production supports Ubuntu 14.04 Trusty and Ubuntu 16.04 Xenial. Work is ongoing on adding support for additional platforms. The installation process is documented at https://zulip.org/server.html and in more detail in the documentation.
Ways to contribute
Zulip welcomes all forms of contributions! This page documents the Zulip development process.
-
Pull requests. Before a pull request can be merged, you need to sign the Dropbox Contributor License Agreement. Also, please skim our commit message style guidelines. We encourage early pull requests for work in progress. Prefix the title of your pull request with
[WIP]and reference it when asking for community feedback. When you are ready for final review, remove the[WIP]. -
Testing. The Zulip automated tests all run automatically when you submit a pull request, but you can also run them all in your development environment following the instructions in the testing docs. You can also try out our new desktop client, which is in alpha; we'd appreciate testing and feedback.
-
Developer Documentation. Zulip has a growing collection of developer documentation on Read The Docs. Recommended reading for new contributors includes the directory structure and new feature tutorial. You can also improve Zulip.org.
-
Mailing lists and bug tracker. Zulip has a development discussion mailing list and uses GitHub issues . There are also lists for the Android and iOS apps. Feel free to send any questions or suggestions of areas where you'd love to see more documentation to the relevant list! Check out our bug report guidelines before submitting. Please report any security issues you discover to zulip-security@googlegroups.com.
-
App codebases. This repository is for the Zulip server and web app (including most integrations). The beta React Native mobile app, Java Android app (see our mobile strategy), new Electron desktop app, and legacy Qt-based desktop app are all separate repositories.
-
Glue code. We maintain a Hubot adapter and several integrations (Phabricator, Jenkins, Puppet, Redmine, and Trello), plus node.js API bindings, an isomorphic JavaScript library, and a full-text search PostgreSQL extension, as separate repos.
-
Translations. Zulip is in the process of being translated into 10+ languages, and we love contributions to our translations. See our translating documentation if you're interested in contributing!
-
Code Reviews. Zulip is all about community and helping each other out. Check out #code review on chat.zulip.org to help review PRs and give comments on other people's work. Everyone is welcome to participate, even those new to Zulip! Even just checking out the code, manually testing it, and posting on whether or not it worked is valuable.
Google Summer of Code
We participated in GSoC in 2016 (with great results) and are participating in 2017 as well.
How to get involved with contributing to Zulip
First, subscribe to the Zulip development discussion mailing list.
The Zulip project uses a system of labels in our issue tracker to make it easy to find a project if you don't have your own project idea in mind or want to get some experience with working on Zulip before embarking on a larger project you have in mind:
-
Integrations. Integrate Zulip with another piece of software and contribute it back to the community! Writing an integration can be a great first contribution. There's detailed documentation on how to write integrations in the Zulip integration writing guide.
-
Bite Size: Smaller projects that might be a great first contribution.
-
Documentation: The Zulip project loves contributions of new documentation.
-
Help Wanted: A broader list of projects that nobody is currently working on.
-
Platform support: These are open issues about making it possible to install Zulip on a wider range of platforms.
-
Bugs: Open bugs.
-
Feature requests: Browsing this list can be a great way to find feature ideas to implement that other Zulip users are excited about.
-
2016 roadmap milestone: The projects that are priorities for the Zulip project. These are great projects if you're looking to make an impact.
Another way to find issues in Zulip is to take advantage of our
area:<foo> convention in separating out issues. We partition all of
our issues into areas like admin, compose, emoji, hotkeys, i18n,
onboarding, search, etc. Look through our
list of labels, and click on
some of the area: labels to see all the tickets related to your
areas of interest.
If you're excited about helping with an open issue, make sure to claim the issue by commenting the following in the comment section: "@zulipbot claim". @zulipbot will assign you to the issue and label the issue as in progress. For more details, check out @zulipbot.
You're encouraged to ask questions on how to best implement or debug your changes -- the Zulip maintainers are excited to answer questions to help you stay unblocked and working efficiently. It's great to ask questions in comments on GitHub issues and pull requests, or on chat.zulip.org. We'll direct longer discussions to Zulip chat, but please post a summary of what you learned from the chat, or link to the conversation, in a comment on the GitHub issue.
We also welcome suggestions of features that you feel would be valuable or changes that you feel would make Zulip a better open source project, and are happy to support you in adding new features or other user experience improvements to Zulip.
If you have a new feature you'd like to add, we recommend you start by opening a GitHub issue about the feature idea explaining the problem that you're hoping to solve and that you're excited to work on it. A Zulip maintainer will usually reply within a day with feedback on the idea, notes on any important issues or concerns, and and often tips on how to implement or test it. Please feel free to ping the thread if you don't hear a response from the maintainers -- we try to be very responsive so this usually means we missed your message.
For significant changes to the visual design, user experience, data model, or architecture, we highly recommend posting a mockup, screenshot, or description of what you have in mind to the #design stream on chat.zulip.org to get broad feedback before you spend too much time on implementation details.
Finally, before implementing a larger feature, we highly recommend looking at the new feature tutorial and coding style guidelines on ReadTheDocs.
Feedback on how to make this development process more efficient, fun, and friendly to new contributors is very welcome! Just send an email to the zulip-devel list with your thoughts.
When you feel like you have completed your work on an issue, post your PR to the #code review stream on chat.zulip.org. This is our lightweight process that gives other developers the opportunity to give you comments and suggestions on your work.
License
Copyright 2011-2017 Dropbox, Inc., Kandra Labs, Inc., and contributors
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
The software includes some works released by third parties under other
free and open source licenses. Those works are redistributed under the
license terms under which the works were received. For more details,
see the docs/THIRDPARTY file included with this distribution.