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How to develop for this plugin?

Note:

  • It's not recommended that using the developing plugin in the production environment.

Prepare keycloak.json

First, you should create a new Docker container to start a Keycloak server instance.

# Change the owner of the mapped volume
$ sudo docker run --rm \
                -u root \
                -v "$(pwd)/develop/data/keycloak":/mnt \
                --entrypoint /bin/chown \
                -it jboss/keycloak:4.5.0.Final \
                -R jboss /mnt

$ sudo docker run -d --name nexus3-keycloak \
                -e KEYCLOAK_LOGLEVEL=DEBUG \
                -e KEYCLOAK_USER=admin \
                -e KEYCLOAK_PASSWORD=admin123 \
                -v "$(pwd)/develop/data/keycloak":/opt/jboss/keycloak/standalone/data \
                -p 172.17.0.1:8086:8080 \
                jboss/keycloak:4.5.0.Final

Or just run the script:

$ sudo bash ./develop/run-keycloak.sh

Then, access http://172.17.0.1:8086 and login with username admin and password admin123 to Configure Keycloak realm client and Create keycloak.json.

Bind port to 172.17.0.1 to make sure that Nexus3 and Keycloak can access each other.

At last, put the keycloak.json into the directory develop, or overwrite the existing one.

Note: If you want to test multiple Keycloak realms, just export the keycloak.json and rename it as keycloak.{index}.json, the {index} can be 0, 1 or 2.

Prepare the Nexus3 Docker image

Execute the image building script:

$ sudo bash ./develop/build-nexus3.sh

After that, a Docker image which is named as nexus3-keycloak-dev:3.16.2-01 will be shown in the list of sudo docker images.

Note:

Build this plugin

$ mvn clean install -Dmaven.test.skip=true

Startup the Nexus3 Docker container

$ sudo bash ./develop/run-nexus3.sh

Note:

  • This script will create a container which is named as nexus3-keycloak-dev and will map the Nexus3 web port to the local port 8903.
  • The Nexus3 data will be saved into ./develop/data/nexus3 to prevent to lose the configurations after re-creating the container.

Check if the plugin works as expected

Everything is ready, just enjoy your development journey! :)

Access http://172.17.0.1:8903 in your browser, and login with username admin and password admin123 to configure your Nexus3.

If you want to check the logs of the Nexus3 server, just running the following command:

# Print the latest 500 lines
$ sudo docker logs --tail 500 nexus3-dev

# Print the log to file
$ sudo docker logs nexus3-dev >& nexus3.log

And if you updated this plugin, just rebuild it, then you just only need to restart the Nexus3 container like this:

$ sudo docker restart nexus3-dev

Single Sign On (SSO) supports via Nginx gateway

If you want to use or test the SSO feature, you should build the Nginx gateway first:

$ sudo bash ./develop/run-nginx-gateway.sh

Then you can access http://172.17.0.1 in your browser, it will redirect to the Keycloak login page like http://172.17.0.1:8086/auth/realms/master/protocol/openid-connect/auth?scope=xxx&client_id=xxx&state=xxx&nonce=xxx&redirect_uri=http%3A%2F%2F172.17.0.1%2Fredirect_uri&response_type=code. When you login successfully, it will go back to http://172.17.0.1, and you already login Nexus3 too.

With the Nginx gateway configuration, you can be authenticated with HTTP basic authentication also, check it through:

# Administration priviledges checking
$ auth_basic=$(echo -n "nexus3:nexus321" | base64); \
  curl -H "Authorization: BASIC $auth_basic" \
       -H "Content-Type: application/json" \
       -d '{"action":"coreui_User","method":"readSources","data":null,"type":"rpc","tid":9}' \
       -v -4 \
       "http://172.17.0.1/service/extdirect"

# User state checking
$ auth_basic=$(echo -n "nexus3:nexus321" | base64); \
  curl -H "Authorization: BASIC $auth_basic" \
       -H "Content-Type: application/json" \
       -v -4 \
       "http://172.17.0.1/service/extdirect/poll/rapture_State_get"

Note: