# CARA - COVID Airborne Risk Assessment

## Applications

### COVID Calculator

A risk assessment tool which simulates the long range airborne spread of the
SARS-CoV-2 virus for space managers.

You can find the CARA COVID Calculator at https://cara.web.cern.ch/calculator/.
Please see the [COVID Calculator README for detailed usage instructions](cara/apps/calculator/README.md).

### CARA Expert App

A tool to interact with various parameters of the CARA model.
This is currently in beta, and can be found at https://cara.web.cern.ch/expert-app.


## Development guide

### Running the COVID calculator app locally

```
pip install -e .   # At the root of the repository
python -m cara.apps.calculator
```

### Running the CARA Expert-App app locally

```
pip install -e .   # At the root of the repository
voila ./app/cara.ipynb
```


Then visit http://localhost:8080/calculator.


### Building the whole environment for local execution

**Simulate the docker build that takes place on openshift with:**

```
s2i build file://$(pwd) --copy --keep-symlinks --context-dir ./app-config/nginx/ centos/nginx-112-centos7 cara-nginx-app
s2i build file://$(pwd) --copy --keep-symlinks --env APP_NAME=cara-voila --context-dir ./ centos/python-36-centos7 cara-voila-app
s2i build file://$(pwd) --copy --keep-symlinks --env APP_NAME=cara-webservice --context-dir ./  centos/python-36-centos7 cara-webservice
cd app-config
docker-compose up
```

Then visit http://localhost:8080/.

### Setting up the application on openshift

The https://cern.ch/cara application is running on CERN's OpenShift platform. In order to set it up for the first time, we followed the documentation at https://cern.service-now.com/service-portal?id=kb_article&n=KB0004498. In particular we:

 * Added the OpenShift application deploy key to the GitLab repository
 * Created a Python 3.6 (the highest possible at the time of writing) application in OpenShift
 * Configured a generic webhook on OpenShift, and call that from the CI of the GitLab repository