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https://github.com/quarkiverse/quarkus-authzed-client

An extension for connecting to authzed instances from Quarkus applications
https://github.com/quarkiverse/quarkus-authzed-client

authzed fga quarkus-extension

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An extension for connecting to authzed instances from Quarkus applications

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README

        

# Quarkus - Authzed Client

[![All Contributors](https://img.shields.io/badge/all_contributors-2-orange.svg?style=flat-square)](#contributors-)

An early draft of quarkus extension for https://github.com/authzed/authzed-java

## Usage

To use the client add the following dependency to the pom.xml

```xml

io.quarkiverse.authzed
quarkus-authzed-client

```

### Injecting the client

To inject the client into your code:

```java
@Inject
private AuthzedClient client;
```

Then the client can be used like this:

```java
Uni response = client.v1().schemaService().readSchema(ReadSchemaRequest.newBuilder().build());
//To actually invoke the request you need to subscribe / wait on the Uni:
System.out.println(response.await().indefinitely().getSchemaText());
```

**Note**: The request will not be executed until you subscribe or wait on the Uni.

#### Unifies imperative and reactive

With Quarkus supporting both imperative and reactive styles it made sense to expose both the blocking and the reactive stubs.
Given the Quarkus favor Mutiny for reactive programming it made sense to generate everyting from scratch using the `quarkus-grpc` extension.
This means that https://github.com/authzed/authzed-java is not directly used in this project.

If you want to access the blocking aspect of the client instead of using `Mutiny` you can:

```java
BlockingAuthzedClinet blockingClient = client.blocking();
```

Both client's have access to exactly the same rpc methods.
The following doc will focus on the `Mutiny` apsect of the client.
Worth's mentioning that this client provides a thin layer / dsl on top of what's generated by `grpc`, so most of the documentaion found on https://docs.authzed.com/ apply here too.

### Writing the schema

Provided that the schema is stored in a `String` variable called `schema`:

```java
Uni writeSchemaResponse = client.v1()
.schemaService()
.writeSchema(WriteSchemaRequest.newBuilder().setSchema(schema).build());

//Wait for the reponse
writeSchemaResponse.await().indefinitely();

```

An example schma:
```
definition user {}
definition document {
relation view: user
relation write: user
}
```

### Reading the schema
```java
Uni response = client.v1().schemaService().readSchema(ReadSchemaRequest.newBuilder().build());
response.subscribe().with(r -> System.out.println("schema:\n" +r.getSchemaText()));
```

### Creating relationships

```java
Uni writeRelationshipRespone = client.v1().permissionService()
.writeRelationships(WriteRelationshipsRequest.newBuilder()
.addUpdates(RelationshipUpdate.newBuilder()
.setOperation(Operation.OPERATION_CREATE)
.setRelationship(Tuples.parseRelationship("document:cv#view@user:somegal"))
.build())
.build());

```

### Checking permissions

```java
Consistency full = Consistency.newBuilder().setFullyConsistent(true).build();
Uni checkPermissionResponse = client.v1().permissionService()
.checkPermission(CheckPermissionRequest.newBuilder()
.setConsistency(full)
.setSubject(Tuples.parseUser("user:somegal"))
.setResource(Tuples.parseObject("document:cv"))
.setPermission("view")
.build());

response.map(r -> r.getPermissionship().getNumber()).subscribe().with(n -> {
switch (n) {
case Permissionship.PERMISSIONSHIP_HAS_PERMISSION_VALUE:
System.out.println("Has permission.");
break;
default:
System.out.println("No permission!");
}
});

```

An alternative way to process the response in a less async way is to `wait` on the `Uni`:

```java
Permissionship p = checkPermissionResponse().wait().indefinitely().getPermissionship();
p == Permissionship.PERMISSIONSHIP_HAS_PERMISSION
? System.out.println("Has permission.");
: System.out.println("No permission!");

```

**Note**: In this example we used `full` consistency to avoid getting back cached values. An alternative would be to use zed token as described: https://docs.authzed.com/guides/first-app#checking-permissions

## Configuration Reference

See the [configuration reference](docs/config/quarkus-authzed.adoc) for the full list of supported configuration options.

## Compatibility

The table below specifies the `Authzed Client` version that used for each `Quarkus Authzed Client Extension`.
**Note**: The table only includes the versions that contained a change in the `Authzed Client` version.

| Quarkus Authzed Client Extension Versions | Authzed Client Version |
|-------------------------------------------|------------------------|
| 0.0.1 | v.12.0 |
| 0.1.0 | v.15.0 |

## Credits
Heavily influeced by Kevin Wotten's (kdubb) work on https://github.com/quarkiverse/quarkus-openfga-client

## Contributors ✨

Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/docs/en/emoji-key)):



Kevin Wooten
Kevin Wooten

💻 🚧
Ioannis Canellos
Ioannis Canellos

💻 🚧

This project follows the [all-contributors](https://github.com/all-contributors/all-contributors) specification. Contributions of any kind welcome!