# Deploying OpenDC

### Preamble

The official way to run OpenDC is using Docker. Other options include building and running locally, and building and
running to deploy on a server.

For all of these options, you have to create a Google API Console project and client ID, which the OpenDC frontend and
web server will use to authenticate users and requests.
Follow [these steps](https://developers.google.com/identity/sign-in/web/sign-in) to make such a project. In the '
Authorized JavaScript origins' and 'Authorized redirect URI' fields, be sure to add `http://localhost:8080` (frontend)
, `http://localhost:8081` (api) and `https://localhost:3000` (frontend dev). Download the JSON of the OAuth 2.0 client
ID you created from the Credentials tab, and specifically note the `client_id`, which you'll need to build OpenDC.

### Installing Docker

OpenDC uses [Docker](https://www.docker.com/) and [Docker Compose](https://docs.docker.com/compose/) to orchestrate the
deployment of the software stack. Please refer to [Docker Desktop](https://www.docker.com/products/docker-desktop) for
instructions on how install Docker on your machine.

### Running OpenDC

To build and run the full OpenDC stack locally on Linux or Mac, you first need to clone the project:

```bash
git clone https://github.com/atlarge-research/opendc.git

# Enter the directory
cd opendc/
```

In the directory you just entered, you need to set up a set of environment variables. To do this, create a file
called `.env` in the `opendc` folder. In this file, replace `your-google-oauth-client-id` with your `client_id` from the
OAuth client ID you created. For a standard setup, you can leave the other settings as-is.

```.env
MONGO_INITDB_ROOT_USERNAME=root
MONGO_INITDB_ROOT_PASSWORD=rootpassword
MONGO_INITDB_DATABASE=admin
OPENDC_DB=opendc
OPENDC_DB_USERNAME=opendc
OPENDC_DB_PASSWORD=opendcpassword
OPENDC_FLASK_SECRET="This is a secret flask key, please change"
OPENDC_OAUTH_CLIENT_ID=your-google-oauth-client-id
OPENDC_API_BASE_URL=http://localhost:8081
```

We provide a list of default traces for you to experiment with. If you want to add others, place them in the `traces`
directory and add entries to the database (see also [the database folder](database/mongo-init-opendc-db.sh))

If you plan to publicly deploy, please also tweak the other settings. In that case, also check the `docker-compose.yml`
and `docker-compose.pod.yml` for further instructions.

Now, start the server:

```bash
# Build the Docker image
docker-compose build

# Start the containers
docker-compose up
```

Wait a few seconds and open `http://localhost:8080` in your browser to use OpenDC. We recommend Google Chrome for the
best development experience.