Employee Rostering Optimization as a Service

An end-to-end OptaPlanner web application ready to deploy on OpenShift 4.

See the video demo.

Building

Build the project with maven in the project’s root directory:

mvn clean install -DskipTests -DskipITs

Running

Run the application with the runLocally.sh script:

./runLocally.sh

Then open http://localhost:8080/ to see the web application.

Alternatively, run npm start in optaweb-employee-rostering-frontend to start the frontend in one terminal, and run mvn quarkus:dev in optaweb-employee-rostering-backend to start the backend in another terminal.

Use a different port

To run on an another port use -Dquarkus.http.port=…​:

./runLocally.sh -Dquarkus.http.port=18080

Benchmark Application

After building the project above, run the benchmark application with:

java -jar optaweb-employee-rostering-benchmark/target/quarkus-app/quarkus-run.jar

Note: make sure to run the project application and benchmark application on different ports if they are run simultaneously.

After benchmarking is complete, a benchmark report will be generated in the local/benchmarkReport directory. Open the index.html file in your browser to view the benchmark results.

Configure the benchmarker

To configure the benchmarker, modify the employeeRosteringBenchmarkConfig.xml file found in the optaweb-employee-rostering-benchmark/src/main/resources directory. Make sure to rebuild the project after modifying the config file for the benchmarker changes to be applied.

Refer to the OptaPlanner Docs for more information on benchmark tweaking.

Running on a local OpenShift cluster

Use Red Hat CodeReady Containers to easily set up a single-node OpenShift 4 cluster on your local computer.

Prerequisites

You have successfully built the project with Maven.

Procedure

1. To install CRC, follow the Getting Started Guide.

2. When the cluster has started,

   1. add oc command-line interface to your $PATH:

      eval $(crc oc-env)

   2. log in as "developer".

3. Create a new project

   oc new-project project_name

4. Run the script:

   ./runOnOpenShift.sh

Updating the deployed application with local changes

Backend

Change the source code and build the backend module with Maven. Then start OpenShift build:

cd optaweb-employee-rostering-backend
oc start-build backend --from-dir=. --follow

Frontend

Change the source code and build the frontend module with npm. Then start OpenShift build:

cd optaweb-employee-rostering-frontend
oc start-build frontend --from-dir=docker --follow

Development

Code formatter

Both IntelliJ and Eclipse formatters are available here: https://github.com/kiegroup/droolsjbpm-build-bootstrap/tree/main/ide-configuration

Backend

Configure your IDE to run the main class, which is in org.optaweb.employeerostering.OptaWebEmployeeRosteringApplication in optaweb-employee-rostering-backend repository.

Frontend

Run npm install and then npm start in the optaweb-employee-rostering-frontend directory.