federation-gateway-audit

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federation-gateway-audit

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Set of tests to evaluate and compare the compatibility of different GraphQL gateways with Apollo Federation.

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# Federation-Compatible Gateway Implementations

This repository contains a set of tests to evaluate and compare the compatibility of different GraphQL gateways with Apollo Federation.

[🌐 See the results of our audit](https://the-guild.dev/graphql/hive/federation-gateway-audit)

[📖 Read more about our methodology and why we created this audit](https://the-guild.dev/graphql/hive/federation-gateway-audit#manifesto)

|                                                   Gateway                                                   | Compatibility |  Test Cases  | Test Suites |
| :---------------------------------------------------------------------------------------------------------: | :-----------: | :----------: | :---------: |
|                            [Hive Router](https://github.com/graphql-hive/router)                            |    100.00%    |    🟢 199    |    🟢 46    |
|                         [Hive Gateway](https://the-guild.dev/graphql/hive/gateway)                          |    98.99%     | 🟢 197 ❌ 2  | 🟢 45 ❌ 1  |
| [Hive Gateway (Rust QP)](https://the-guild.dev/graphql/hive/docs/gateway/other-features/rust-query-planner) |    98.49%     | 🟢 196 ❌ 3  | 🟢 44 ❌ 2  |
|                               [Apollo Router](https://www.apollographql.com/)                               |    97.49%     | 🟢 194 ❌ 5  | 🟢 43 ❌ 3  |
|                              [Apollo Gateway](https://www.apollographql.com/)                               |    96.98%     | 🟢 193 ❌ 6  | 🟢 42 ❌ 4  |
|                                   [Cosmo Router](https://wundergraph.com)                                   |    91.96%     | 🟢 183 ❌ 16 | 🟢 37 ❌ 9  |
|                                  [Grafbase Gateway](https://grafbase.com)                                   |    90.45%     | 🟢 180 ❌ 19 | 🟢 39 ❌ 7  |

[See the full report](./REPORT.md)

## Apollo Federation Coverage

The tests are based on the Apollo Federation specification and cover the following directives:

- `@interfaceObject`
- `@key`
- `@external`
- `@provides`
- `@requires`
- `@extends`
- `@inaccessible`
- `@shareable`
- `@skip`
- `@include`
- `@composeDirective`
- `@override`

**Out of scope (limited by Enterprise license of Apollo Router):**

We are not able to test the following directives on Apollo Router due to the limitations of the Enterprise license:

- `@authenticated`
- `@policy`
- `@requiresScopes`
- `@override(label:)`

We plan to test these directives as soon as we have access to the Enterprise license.

---

## CLI

> TODO: we're working on a CLI to make it easier to run the tests, stay tuned!

---

## Instructions

First of all, you need to install and prepare the gateways. You can do this by running the following command:

```bash
make install
```

> [!IMPORTANT]
> Be aware that `Node` and `npm` are required to run the whole setup.

### Testing all gateways

You can run the tests for each gateway by running the following command:

```bash
make test-all
```

### Testing a specific gateway

You can run the tests for a specific gateway by running the following command:

```bash
make test-[name of the gateway]

make test-grafbase-gateway
make test-cosmo-router
make test-hive-gateway
make test-hive-gateway-router-runtime
make test-apollo-router
```

### Running a gateway for a single test suite

In case you want to run only a limited set of tests, you can do so by running the following command:

```bash
make test-suite-[name of the gateway] TEST_SUITE=[id of the test suite]
```

### Running a gateway for a specific supergraph

There's also the possibility to start a gateway for a selected supergraph, in case you want to run the queries yourself.

```bash
make run-[name of the gateway] TEST_SUITE=[id of the test suite]
```

## Contributing or adding a new gateway

[See the contributing guide](./.github/CONTRIBUTING.md)

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