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**Table of Contents**  *generated with [DocToc](https://github.com/thlorenz/doctoc)*

- [Hydra-maester](#hydra-maester)
  - [Prerequisites](#prerequisites)
  - [Design](#design)
  - [How to use it](#how-to-use-it)
    - [Command-line flags](#command-line-flags)
  - [Development](#development)
    - [Testing](#testing)

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# Hydra-maester


This project contains a Kubernetes controller that uses Custom Resources (CR) to manage Hydra Oauth2 clients. ORY Hydra Maester watches for instances of `oauth2clients.hydra.ory.sh/v1alpha1` CR and creates, updates, or deletes corresponding OAuth2 clients by communicating with ORY Hydra's API.

Visit Hydra-maester's [chart documentation](https://github.com/ory/k8s/blob/master/docs/helm/hydra-maester.md) and view [sample OAuth2 client resources](config/samples) to learn more about the `oauth2clients.hydra.ory.sh/v1alpha1` CR. 

The project is based on [Kubebuilder](https://github.com/kubernetes-sigs/kubebuilder).

## Prerequisites

- recent version of Go language with support for modules (e.g: 1.12.6)
- make
- kubectl
- kustomize
- [kubebuilder](https://github.com/kubernetes-sigs/kubebuilder) for running tests
- [ginkgo](https://onsi.github.io/ginkgo/) for local integration testing
- access to K8s environment: minikube or a remote K8s cluster
- [mockery](https://github.com/vektra/mockery) to generate mocks for testing purposes

## Design

Take a look at [Design Readme](./docs/README.md).

## How to use it

- `make test` to run tests
- `make test-integration` to run integration tests
- `make install` to generate CRD file from go sources and install it on the cluster
- `export HYDRA_URL={HYDRA_SERVICE_URL} && make run` to run the controller

To deploy the controller, edit the value of the ```--hydra-url``` argument in the [manager.yaml](config/manager/manager.yaml) file and run ```make deploy```.

### Command-line flags

| Name            | Required | Description                  | Default value | Example values                                       |
|-----------------|----------|------------------------------|---------------|------------------------------------------------------|
| **hydra-url**   | yes      | ORY Hydra's service address  | -             | ` ory-hydra-admin.ory.svc.cluster.local`             |
| **hydra-port**  | no       | ORY Hydra's service port     | `4445`        | `4445`                                               |

## Development

### Testing

Use mockery to generate mock types that implement existing interfaces. To generate a mock type for an interface, navigate to the directory containing that interface and run this command:
```
mockery -name={INTERFACE_NAME}
```