# Build and run your dev environment using Docker

- [Build and run your dev environment using Docker](#build-and-run-your-dev-environment-using-docker)
  - [Build and run your gemma application with Docker Compose in one step](#build-and-run-your-gemma-application-with-docker-compose-in-one-step)
    - [Hints and tricks](#hints-and-tricks)
  - [Build and run the gemma application with Docker manually](#build-and-run-the-gemma-application-with-docker-manually)
    - [Network setup](#network-setup)
    - [Database setup](#database-setup)
    - [Create ER diagrams](#create-er-diagrams)
    - [GeoServer setup](#geoserver-setup)
    - [Gemma backend setup](#gemma-backend-setup)
    - [SPA setup](#spa-setup)

Run the `build` commands from the root of your checkout, because it is
assumed as the context!

Other example commands, too, assume they are run from the root of your
checkout.

## Build and run your gemma application with Docker Compose in one step

Requires at least Docker Engine release 17.12.0+. Because of Compose file
format 3.5 for named networks.

If you fiddle around with the following error message: `Version in
"./docker-compose.yml" is unsupported` take a look at the comments in the
head of the `docker-compose.yml` file.

From your docker directory, start up your gemma application by running
`docker-compose up`. Here an example for build and running the gemma
application:

```shell
cd docker
docker-compose -p gemma up
```

Note: The `-p` flag specifies an alternate project name (default: directory
name).

Now you should be able to use the application in your browser by going to
`http://HOSTNAME:8290`, with `HOSTNAME` being the hostname of your docker
host.

Stop the application, either by running `docker-compose down` from within your
docker directory in the second terminal, or by hitting `CTRL+C` in the
original terminal where you started the gemma application.

### Hints and tricks

If you want to run your services in the background, you can pass the `-d` flag
(for `detached` mode) to `docker-compose up` and use `docker-compose ps` to see
what is currently running. Take a look at the following example.

```shell
docker-compose up -d
Starting gemma_db ...
Starting gemma_db ... done
Starting gemma_geoserver ...
Starting gemma_geoserver ... done
Starting gemma_backend ...
Starting gemma_backend ... done
Starting gemma_spa ...
Starting gemma_spa ... done
```

```shell
docker-compose ps
     Name                    Command               State            Ports
----------------------------------------------------------------------------------
gemma_backend     /usr/local/bin/gemma -c /o ...   Up      0.0.0.0:8200->8000/tcp
gemma_db          /usr/lib/postgresql/11/bin ...   Up      0.0.0.0:54321->5432/tcp
gemma_geoserver   /usr/share/tomcat8/bin/cat ...   Up      0.0.0.0:8280->8080/tcp
gemma_spa         /bin/sh -c make -f Makefil ...   Up      0.0.0.0:8290->8080/tcp
```

For more infos about Docker Compose take a look at:
https://docs.docker.com/compose/

## Build and run the gemma application with Docker manually

Or build and run your dev enviroment manually by the following steps.

### Network setup

Create a network to connect containers:

```shell
docker network create gemma
```

### Database setup

Build `gemma_db` docker image with e.g.:

```shell
docker build -t gemma_db -f docker/Dockerfile.db .
```

Get a running instance with e.g.:

```shell
docker run --name gemma-db -d -p 54321:5432 -v $PWD/schema:/opt/gemma \
           --network gemma gemma_db
```

Use `--network-alias gemma-db` if your container has a different name

Run tests for [Row-Level Security](https://www.postgresql.org/docs/11/ddl-rowsecurity.html) (RLS)
policies:

```shell
docker exec gemma-db ./run_tests.sh
```

### Create ER diagrams

Assuming you have installed `postgresql-autodoc` and
[graphviz](http://graphviz.org/) on a machine from which you can reach your
docker host, you can use the following:

ER diagram with waterway related tables:

```shell
postgresql_autodoc -p 54321 -h $dockerhost \
                   -d gemma -U sophie --password=so2Phie4 \
                   -t dot -l . -s 'waterway'
dot -Tpdf gemma.dot > gemma_waterway.pdf
```

Omit the `-s` option to get a diagram with all tables or use any other
schema name to see other parts of the whole picture.

### GeoServer setup

Build `gemma_geoserver` docker image with e.g.:

```shell
docker build -t gemma_geoserver -f docker/Dockerfile.geoserv .
```

Get a running instance with e.g.:

```shell
docker run --name gemma-geoserver -d -p 8280:8080 --network gemma \
           gemma_geoserver
```

Use `--network-alias gemma-geoserver` if you give your container
a different name.

### Gemma backend setup

Build `gemma_backend` docker image with e.g.:

```shell
docker build -t gemma_backend -f docker/Dockerfile.backend .
```

Get a running instance with e.g.:

```shell
docker run --name gemma-backend -v $PWD:/opt/gemma -d -p 8200:8000 \
           --network gemma gemma_backend
```

Use `--network-alias gemma-backend` if you give your container
a different name.

### SPA setup

Build `gemma_spa` docker image with e.g.:

```shell
docker build -t gemma_spa -f docker/Dockerfile.spa .
```

Get a running instance with e.g.:

```shell
docker run --name gemma-spa -v $PWD/client:/opt/gemma/client -d -p 8290:8080 \
           --network gemma gemma_spa
```

Now you should be able to use the application in your browser by going to
`http://HOSTNAME:8290`, with `HOSTNAME` being the hostname of your docker host.