Added ecent listener

fda-authentication-service/Dockerfile

 ###### FIRST STAGE ######
+FROM maven:slim as build
+MAINTAINER Martin Weise <martin.weise@tuwien.ac.at>
+
+WORKDIR /app
+
+COPY ./rabbitmq-event-listener/pom.xml ./pom.xml
+
+RUN mvn -fn -B dependency:go-offline > /dev/null
+
+COPY ./rabbitmq-event-listener ./
+
+# Make sure it compiles
+RUN mvn -q clean package -DskipTests > /dev/null
+
+RUN mv ./target/rabbitmq-event-listener-*.jar ./target/rabbitmq-event-listener.jar
+
+###### SECOND STAGE ######
 FROM keycloak/keycloak:21.0 as config
 
+COPY --from=build /app/target/rabbitmq-event-listener.jar /opt/keycloak/providers/rabbitmq-event-listener.jar
+
 # Enable health and metrics support
 ENV KC_HEALTH_ENABLED=true
 ENV KC_METRICS_ENABLED=true
@@ -13,18 +32,21 @@ WORKDIR /opt/keycloak
 
 # for demonstration purposes only, please make sure to use proper certificates in production instead
 RUN keytool -genkeypair -storepass password -storetype PKCS12 -keyalg RSA -keysize 2048 -dname "CN=server" -alias server -ext "SAN:c=DNS:localhost,IP:127.0.0.1" -keystore conf/server.keystore
-RUN /opt/keycloak/bin/kc.sh build
+RUN /opt/keycloak/bin/kc.sh build --spi-event-listener-rabbitmqeventlistener-enabled=true
+RUN /opt/keycloak/bin/kc.sh show-config
 
-###### SECOND STAGE ######
+###### THIRD STAGE ######
 FROM redhat/ubi9-minimal as binary
 
 RUN microdnf update -y && microdnf install -y curl-minimal libcurl-minimal
 
-###### THIRD STAGE ######
+###### FOURTH STAGE ######
 FROM keycloak/keycloak:21.0 as runtime
+
 COPY --from=config /opt/keycloak/ /opt/keycloak/
 COPY --from=binary /usr/lib64 /usr/lib64
 COPY --from=binary /usr/bin/curl /usr/bin/curl
+COPY --from=build /app/target/rabbitmq-event-listener.jar /opt/keycloak/providers/rabbitmq-event-listener.jar
 
 USER root
 

fda-authentication-service/rabbitmq-event-listener/pom.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>org.example</groupId>
+    <artifactId>rabbitmq-event-listener</artifactId>
+    <version>1.0-SNAPSHOT</version>
+    <packaging>jar</packaging>
+
+    <name>Keycloak - Custom Event Listener</name>
+    <description>This event listener will notify an admin about new registrations via Email.</description>
+
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+
+        <maven.compiler.source>11</maven.compiler.source>
+        <maven.compiler.target>11</maven.compiler.target>
+
+        <!-- https://mvnrepository.com/artifact/org.keycloak/keycloak-parent -->
+        <keycloak.version>21.0.1</keycloak.version>
+        <!-- https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-compiler-plugin -->
+        <maven-compiler-plugin.version>3.8.1</maven-compiler-plugin.version>
+        <!-- https://mvnrepository.com/artifact/org.wildfly.plugins/wildfly-maven-plugin -->
+        <maven-wildfly-plugin.version>2.0.2.Final</maven-wildfly-plugin.version>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.keycloak</groupId>
+            <artifactId>keycloak-server-spi</artifactId>
+            <version>${keycloak.version}</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.keycloak</groupId>
+            <artifactId>keycloak-server-spi-private</artifactId>
+            <version>${keycloak.version}</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.keycloak</groupId>
+            <artifactId>keycloak-services</artifactId>
+            <version>${keycloak.version}</version>
+            <scope>provided</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>${maven-compiler-plugin.version}</version>
+            </plugin>
+            <plugin>
+                <groupId>org.wildfly.plugins</groupId>
+                <artifactId>wildfly-maven-plugin</artifactId>
+                <version>${maven-wildfly-plugin.version}</version>
+                <configuration>
+                    <skip>false</skip>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>
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fda-authentication-service/rabbitmq-event-listener/src/main/java/at/tuwien/CustomEventListenerProvider.java

+package at.tuwien;
+
+import org.jboss.logging.Logger;
+import org.keycloak.email.DefaultEmailSenderProvider;
+import org.keycloak.email.EmailException;
+import org.keycloak.events.Event;
+import org.keycloak.events.EventListenerProvider;
+import org.keycloak.events.EventType;
+import org.keycloak.events.admin.AdminEvent;
+import org.keycloak.models.KeycloakSession;
+import org.keycloak.models.RealmModel;
+import org.keycloak.models.RealmProvider;
+import org.keycloak.models.UserModel;
+
+public class CustomEventListenerProvider implements EventListenerProvider {
+
+    private static final Logger log = Logger.getLogger(CustomEventListenerProvider.class);
+
+    private final KeycloakSession session;
+    private final RealmProvider model;
+
+    public CustomEventListenerProvider(KeycloakSession session) {
+        this.session = session;
+        this.model = session.realms();
+    }
+
+    @Override
+    public void onEvent(Event event) {
+
+        if (EventType.REGISTER.equals(event.getType())) {
+            log.infof("## NEW %s EVENT", event.getType());
+            log.info("-----------------------------------------------------------");
+
+            RealmModel realm = this.model.getRealm(event.getRealmId());
+            UserModel newRegisteredUser = this.session.users().getUserById(realm, event.getUserId());
+
+            String emailPlainContent = "New user registration\n\n" +
+                    "Email: " + newRegisteredUser.getEmail() + "\n" +
+                    "Username: " + newRegisteredUser.getUsername() + "\n" +
+                    "Client: " + event.getClientId();
+
+            String emailHtmlContent = "<h1>New user registration</h1>" +
+                    "<ul>" +
+                    "<li>Email: " + newRegisteredUser.getEmail() + "</li>" +
+                    "<li>Username: " + newRegisteredUser.getUsername() + "</li>" +
+                    "<li>Client: " + event.getClientId() + "</li>" +
+                    "</ul>";
+
+            DefaultEmailSenderProvider senderProvider = new DefaultEmailSenderProvider(session);
+
+            try {
+                senderProvider.send(session.getContext().getRealm().getSmtpConfig(), "admin@example.com", "Keycloak - New Registration", emailPlainContent, emailHtmlContent);
+            } catch (EmailException e) {
+                log.error("Failed to send email", e);
+            }
+            log.info("-----------------------------------------------------------");
+        }
+
+    }
+
+    @Override
+    public void onEvent(AdminEvent adminEvent, boolean b) {
+
+    }
+
+    @Override
+    public void close() {
+
+    }
+}
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fda-authentication-service/rabbitmq-event-listener/src/main/java/at/tuwien/CustomEventListenerProviderFactory.java

+package at.tuwien;
+
+import org.keycloak.Config;
+import org.keycloak.events.EventListenerProvider;
+import org.keycloak.events.EventListenerProviderFactory;
+import org.keycloak.models.KeycloakSession;
+import org.keycloak.models.KeycloakSessionFactory;
+
+public class CustomEventListenerProviderFactory implements EventListenerProviderFactory {
+
+    @Override
+    public EventListenerProvider create(KeycloakSession keycloakSession) {
+        return new CustomEventListenerProvider(keycloakSession);
+    }
+
+    @Override
+    public void init(Config.Scope scope) {
+
+    }
+
+    @Override
+    public void postInit(KeycloakSessionFactory keycloakSessionFactory) {
+
+    }
+
+    @Override
+    public void close() {
+
+    }
+
+    @Override
+    public String getId() {
+        return "rabbitmq-event-listener";
+    }
+}
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fda-authentication-service/rabbitmq-event-listener/src/main/resources/META-INF/jboss-deployment-structure.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<jboss-deployment-structure>
+    <deployment>
+        <dependencies>
+            <module name="org.keycloak.keycloak-services" />
+        </dependencies>
+    </deployment>
+</jboss-deployment-structure>
\ No newline at end of file

fda-authentication-service/rabbitmq-event-listener/src/main/resources/META-INF/services/org.keycloak.events.EventListenerProviderFactory

+at.tuwien.CustomEventListenerProviderFactory
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