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Red Hat Decision Manager Quick Loan Bank Demo

Installing on OpenShift Container Platform

This demo can be installed on Red Hat OpenShift Container Platform in various ways. We'll explain the different options provided.

All installation options require an oc client installation that is connected to a running OpenShift instance. More information on OpenShift and how to setup a local OpenShift development environment based on the Red Hat Container Development Kit can be found here.

NOTE

The Red Hat Decision Manager 7 - Decision Central image requires a Persistent Volume which has both ReadWriteOnce (RWO) and ReadWriteMany (RWX) Access Types. If no PVs matching this description are available, deployment of that image will fail until a PV of that type is available.

Automated installation, manual project import

This installation option will install the Decision Manager 7 and Decision Service in OpenShift using a single script, after which the demo project needs to be manually imported.

  1. Download and unzip or clone this repo.

  2. Run the "init-openshift.sh" (for Linux and macOS) or "init-openshift.ps1" (Windows) file. This will create a new project and application in OpenShift.

  3. Login to your OpenShift console. For a local OpenShift installation this is usually: https://{host}:8443/console

  4. Open the project "RHDM7 Quick Loan Bank Demo". Open the "Overview". Wait until the 2 pods, "rhdm7-loan-rhdmcentr" and "rhdm7-loan-kieserver" have been deployed.

  5. Open the "Networking -> Routes" screen. Click on the "Location" value next to "rhdm7-qlb-loan-rhdmcentr". This opens the Decision Central console.

  6. Login to Decision Central:

    - login for admin and analyst roles (u:dmAdmin / p:redhatdm1!)

  7. Click on "Design" to open the design perspective.

  8. Click on "Import project". Enter the following as the repository URL: https://github.com/jbossdemocentral/rhdm7-qlb-loan-demo-repo.git, and click on "Import".

  9. Select "loan-application" and click on the "Ok" button on the right-hand side of the screen.

  10. The project has simple data model (Loan & Applicant) and single decision table (loan-application) which contains the loan approval rule set.

  11. Build and deploy version 1.0 of the project. Click on the "Build and Deploy" in the upper right corner.

  12. Go to "Menu -> Deploy -> Execution Servers" repository to see the loan-application KIE Container deployed on the Decision Server.

  13. The Decision Server provides a Swagger UI that documents the full RESTful interface exposed by the server at. To open the Swagger UI, go back to the OpenShift console, and go to the "Networking - Routes" screen. Copy the "Location" value next to "rhdm7-qlb-loan-kieserver". Paste the URL in a browser tab and add "/docs" to the URL. This will show the Swagger UI.

  14. Follow instructions 11 and 12 from above "Option 1- Install on your machine".

  15. The AngularJS client application can also be accessed via an OpenShift route. Go back to the OpenShift console, and go to the "Applications - Routes" screen. Click on the hostname of the "qlb-client-application", this will direct you to the client application. Try to submit a new loan request using the same data as shown the JSON file at step 12 of "Option 1 - Install on your machine". Try to enter different values to see a loan get disapproved.

  16. You can change the various rules as desired, change the version of the project, and redeploy a new version to a new KIE Container (allowing you to serve multiple versions of the same rule set at the same time on the same Decision Server). You can also build a new version of the project and use the Version Configuration tab of the container definition (in the Execution Servers screen) to manage the container using the UPGRADE button to pull the new version.

Scripted installation

This installation option will install the Decision Manager 7 and Decision Service in OpenShift using a the provided provision.sh script, which gives the user a bit more control how to provision to OpenShift.

  1. Download and unzip. or clone this repo.

  2. In the demo directory, go to ./support/openshift. In that directory you will find a provision.sh script. (Windows support will be introduced at a later time).

  3. Run ./provision.sh -h to inspect the installation options.

  4. To provision the demo, with the OpenShift ImageStreams in the project's namespace, run ./provision.sh setup rhdm7-loan --with-imagestreams.

    NOTE

    The --with-imagestreams parameter installs the Decision Manager 7 image streams and templates into the project namespace instead of the openshift namespace (for which you need admin rights). If you already have the required image-streams and templates installed in your OpenShift environment in the openshift namespace, you can omit the --with-imagestreams from the setup command.

  5. A second useful option is the --pv-capacity option, which allows you to set the capacity of the Persistent Volume used by the Decision Central component. This is for example required when installing this demo in OpenShift Online, as the Persistent Volume Claim needs to be set to 1Gi instead of the default 512Mi. So, to install this demo in OpenShift Online, you can use the following command: ./provision.sh setup rhdm7-loan --pv-capacity 1Gi --with-imagestreams

  6. To delete an already provisioned demo, run ./provision.sh delete rhdm7-loan.

  7. After provisioning, follow the instructions from above "Option 2 - Automated installation, manual project import", starting at step 3.

A full walkthrough of this demo on an OpenShift environment is provided here.