Blazing fast, instant realtime GraphQL APIs on your DB with fine grained access control, also trigger webhooks on database events.
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jkachmar d50aae87a5 Updates cabal freeze file
#### TODO

- [x] fix `hashable >= 1.3.1` serialization ordering issue [^1]
  - `test_graphql_mutations.py::TestGraphQLMutateEnums` was failing
- [x] fix `unordered-containers` serialization ordering issue [^2]
  - `test_graphql_queries.py` was failing on Citus
- [ ] verify that no new failures have been introduced
- [ ] open issues to fix the above
  - identify test cases that "leak" implementation details by depending on `hashable` instance ordering
  - bump `hashable >= 1.3.1` and update test cases with new ordering OR modify them so that ordering is stable
  - bump `unordered-containers >= 0.2.15.0` and update test cases with new ordering OR modify them so that ordering is stable
    - one of the test cases was failing on string equality comparison for a generated Citus query
    - we probably don't want to _actually_ do this unless there are _very specific_ guarantees we want to make about generated query structure
---

Just what it says on the tin.

https://github.com/hasura/graphql-engine-mono/pull/3538 updated the freeze file a few weeks ago, but it looks like the index state hadn't been updated since December so a lot of stuff that had newer versions didn't get updated.

---

EDIT: I should add, the motivation for doing this in the first place is that `hspec > 2.8.4` now supports specifying filtering spec trees based on patterns provided by the `HSPEC_MATCH` environment variable.

For example, one could have a script that executes the following:
```
HSPEC_MATCH="PostgreSQL" \
  ghcid \
    --command \
      'cabal repl graphql-engine:test:tests-hspec \
         --repl-option -O0 \
         --repl-option -fobject-code' \
    --test "main"
```
...which will loop on typechecking the `tests-hspec` component, and then as soon as it passes (i.e. no warnings or errors) will run _only_ the `PostgreSQL` sub-components.

[^1]: `hashable >= 1.3.1.0` [updated its default salts](https://github.com/haskell-unordered-containers/hashable/pull/196), which [broke serialization ordering](https://github.com/haskell/aeson/issues/837)
[^2]: `unordered-containers >= 0.2.16.0` [introduced changes to some of its internal functions](https://hackage.haskell.org/package/unordered-containers-0.2.16.0/changelog) which seem like they could have affected serialization stability

PR-URL: https://github.com/hasura/graphql-engine-mono/pull/3672
GitOrigin-RevId: bbd1d48c73db4021913f0b5345b7315a8d6525d3
2022-02-18 05:32:08 +00:00
.circleci server: fix multiple calls to database on startup 2022-02-09 05:14:29 +00:00
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cli cli: improve handling of wrapped errors in migrate operations 2022-02-08 14:30:35 +00:00
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console console: Add minimal version of metadata migration hook 2022-02-17 16:19:14 +00:00
contrib/metadata-types contrib: Metadata V3 types + JSON Schema 2021-11-10 05:37:11 +00:00
docker-compose Add README.md to tests-hspec and reorganize module namespace 2022-01-21 07:49:31 +00:00
docs Feature/removable request transform body and modified request transform API 2022-02-17 04:37:18 +00:00
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rfcs server/mssql: use temporary tables for insert mutation execution 2021-12-22 11:05:29 +00:00
scripts ci: fix bugs faced during v2.2.0 release 2022-02-16 08:21:35 +00:00
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.git-blame-ignore-revs Added a .git-blame-ignore-revs file 2021-10-27 18:17:16 +00:00
.gitignore server: address recent graphql-ws related bugs 2021-11-04 12:40:02 +00:00
.hlint.yaml Prevent uses of unsafeMkName whenever possible. 2022-01-27 15:13:37 +00:00
.kodiak.toml ci: sets include_pr_number kodiak config to false (#1569) 2021-06-14 15:21:56 +00:00
cabal.project Bumps Kriti Version 2022-02-15 22:32:38 +00:00
cabal.project.ci build: use shared root cabal.project for ci-build targets 2021-09-16 17:21:00 +00:00
cabal.project.ci-haddock ci: add a new parallel job to build haddocks, to save CI time 2022-01-03 06:26:33 +00:00
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cabal.project.ci-haddock.local ci: add a new parallel job to build haddocks, to save CI time 2022-01-03 06:26:33 +00:00
cabal.project.ci.freeze build: use shared root cabal.project for ci-build targets 2021-09-16 17:21:00 +00:00
cabal.project.ci.local ci: fix up pro build scripts, optimize cabal/ghc build flags 2021-11-24 08:20:14 +00:00
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cabal.project.dev-sh.local dev: add ci build flags that improved compile times to dev.sh cabal c… 2021-12-10 16:22:38 +00:00
cabal.project.freeze Updates cabal freeze file 2022-02-18 05:32:08 +00:00
CHANGELOG.md server/mssql: Add max precision to nvarchar and varchar session variables 2022-02-17 14:12:45 +00:00
code-of-conduct.md update code of conduct (#2886) 2019-09-16 14:07:52 +05:30
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LICENSE Change license for core GraphQL Engine to Apache 2.0 (#1821) 2019-03-19 16:23:36 +05:30
LICENSE-community add community boilerplates and examples (#430) 2018-09-13 12:00:07 +05:30
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SECURITY.md translation(hindi): add security.md (#3162) 2020-01-05 11:32:23 +05:30

Hasura GraphQL Engine

Latest release Docs

Hasura is an open source product that accelerates API development by 10x by giving you GraphQL or REST APIs with built in authorization on your data, instantly.

Read more at hasura.io and the docs.


Hasura GraphQL Engine Demo


Hasura GraphQL Engine Realtime Demo


Features

  • Make powerful queries: Built-in filtering, pagination, pattern search, bulk insert, update, delete mutations
  • Works with existing, live databases: Point it to an existing database to instantly get a ready-to-use GraphQL API
  • Realtime: Convert any GraphQL query to a live query by using subscriptions
  • Merge remote schemas: Access custom GraphQL schemas for business logic via a single GraphQL Engine endpoint. Read more.
  • Extend with Actions: Write REST APIs to extend Hasuras schema with custom business logic.
  • Trigger webhooks or serverless functions: On Postgres insert/update/delete events (read more)
  • Scheduled Triggers: Execute custom business logic at specific points in time using a cron config or a one-off event.
  • Fine-grained access control: Dynamic access control that integrates with your auth system (eg: auth0, firebase-auth)
  • Admin UI & Migrations: Admin UI & Rails-inspired schema migrations
  • Supported Databases: Supports PostgreSQL (and its flavours), MS SQL Server and Big Query. Support for more databases coming soon.

Read more at hasura.io and the docs.

Table of contents

Table of Contents

Quickstart:

One-click deployment on Hasura Cloud

The fastest and easiest way to try Hasura out is via Hasura Cloud.

  1. Click on the following button to deploy GraphQL engine on Hasura Cloud including Postgres add-on or using an existing Postgres database:

    Deploy to Hasura Cloud

  2. Open the Hasura console

    Click on the button "Launch console" to open the Hasura console.

  3. Make your first GraphQL query

    Create a table and instantly run your first query. Follow this simple guide.

Other one-click deployment options

Check out the instructions for the following one-click deployment options:

Infra provider One-click link Additional information
Heroku Deploy to Heroku docs
DigitalOcean Deploy to DigitalOcean docs
Azure Deploy to Azure docs
Render Deploy to Render docs

Other deployment methods

For Docker-based deployment and advanced configuration options, see deployment guides or install manifests.

Architecture

The Hasura GraphQL Engine fronts a Postgres database instance and can accept GraphQL requests from your client apps. It can be configured to work with your existing auth system and can handle access control using field-level rules with dynamic variables from your auth system.

You can also merge remote GraphQL schemas and provide a unified GraphQL API.

Hasura GraphQL Engine architecture

Client-side tooling

Hasura works with any GraphQL client. See awesome-graphql for a list of clients. Our frontend tutorial series also have integrations with GraphQL clients for different frameworks.

Add business logic

GraphQL Engine provides easy-to-reason, scalable and performant methods for adding custom business logic to your backend:

Remote schemas

Add custom resolvers in a remote schema in addition to Hasura's database-based GraphQL schema. Ideal for use-cases like implementing a payment API, or querying data that is not in your database - read more.

Actions

Actions are a way to extend Hasuras schema with custom business logic using custom queries and mutations. Actions can be added to Hasura to handle various use cases such as data validation, data enrichment from external sources and any other complex business logic - read more

Trigger webhooks on database events

Add asynchronous business logic that is triggered based on database events. Ideal for notifications, data-pipelines from Postgres or asynchronous processing - read more.

Derived data or data transformations

Transform data in Postgres or run business logic on it to derive another dataset that can be queried using GraphQL Engine - read more.

Demos

Check out all the example applications in the community/sample-apps directory.

Realtime applications

  • Group Chat application built with React, includes a typing indicator, online users & new message notifications.

  • Live location tracking app that shows a running vehicle changing current GPS coordinates moving on a map.

  • A realtime dashboard for data aggregations on continuously changing data.

Videos

Support & Troubleshooting

The documentation and community will help you troubleshoot most issues. If you have encountered a bug or need to get in touch with us, you can contact us using one of the following channels:

We are committed to fostering an open and welcoming environment in the community. Please see the Code of Conduct.

If you want to report a security issue, please read this.

Stay up to date

We release new features every month. Sign up for our newsletter by using the link below. We send newsletters only once a month. https://hasura.io/newsletter/

Contributing

Check out our contributing guide for more details.

Brand assets

Hasura brand assets (logos, the Hasura mascot, powered by badges etc.) can be found in the assets/brand folder. Feel free to use them in your application/website etc. We'd be thrilled if you add the "Powered by Hasura" badge to your applications built using Hasura. ❤️

<!-- For light backgrounds -->
<a href="https://hasura.io">
  <img width="150px" src="https://graphql-engine-cdn.hasura.io/img/powered_by_hasura_primary_darkbg.svg" />
</a>

<!-- For dark backgrounds -->
<a href="https://hasura.io">
  <img width="150px" src="https://graphql-engine-cdn.hasura.io/img/powered_by_hasura_primary_lightbg.svg" />
</a>

License

The core GraphQL Engine is available under the Apache License 2.0 (Apache-2.0).

All other contents (except those in server, cli and console directories) are available under the MIT License. This includes everything in the docs and community directories.

Translations

This readme is available in the following translations:

Translations for other files can be found here.