Update Vertex AI Gemini provider to use ModelAuthProvider

model-auth-providers/oidc-model-auth-provider/deployment/pom.xml

@@ -0,0 +1,44 @@
+<?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>
+    <parent>
+        <groupId>io.quarkiverse.langchain4j</groupId>
+        <artifactId>quarkus-langchain4j-oidc-model-auth-provider-parent</artifactId>
+        <version>999-SNAPSHOT</version>
+    </parent>
+    <artifactId>quarkus-langchain4j-oidc-model-auth-provider-deployment</artifactId>
+    <name>Quarkus LangChain4j - OpenId Connect (OIDC) ModelAuthProvider - Deployment</name>
+    <dependencies>
+        <dependency>
+            <groupId>io.quarkiverse.langchain4j</groupId>
+            <artifactId>quarkus-langchain4j-oidc-model-auth-provider</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>io.quarkiverse.langchain4j</groupId>
+            <artifactId>quarkus-langchain4j-core-deployment</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>io.quarkus</groupId>
+            <artifactId>quarkus-junit5-internal</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+    <build>
+        <plugins>
+            <plugin>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <annotationProcessorPaths>
+                        <path>
+                            <groupId>io.quarkus</groupId>
+                            <artifactId>quarkus-extension-processor</artifactId>
+                            <version>${quarkus.version}</version>
+                        </path>
+                    </annotationProcessorPaths>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+</project>

model-auth-providers/oidc-model-auth-provider/deployment/src/main/java/io/quarkiverse/langchain4j/oidc/deployment/OidcModelAuthProviderBuildConfig.java

@@ -0,0 +1,19 @@
+package io.quarkiverse.langchain4j.oidc.deployment;
+
+import static io.quarkus.runtime.annotations.ConfigPhase.BUILD_TIME;
+
+import java.util.Optional;
+
+import io.quarkus.runtime.annotations.ConfigDocDefault;
+import io.quarkus.runtime.annotations.ConfigRoot;
+import io.smallrye.config.ConfigMapping;
+
+@ConfigRoot(phase = BUILD_TIME)
+@ConfigMapping(prefix = "quarkus.langchain4j.oidc-model-auth-provider")
+public interface OidcModelAuthProviderBuildConfig {
+    /**
+     * Whether the OIDC ModelAuthProvider should be enabled
+     */
+    @ConfigDocDefault("true")
+    Optional<Boolean> enabled();
+}

model-auth-providers/oidc-model-auth-provider/deployment/src/main/java/io/quarkiverse/langchain4j/oidc/deployment/OidcModelAuthProviderProcessor.java

@@ -0,0 +1,35 @@
+package io.quarkiverse.langchain4j.oidc.deployment;
+
+import java.util.function.BooleanSupplier;
+
+import io.quarkiverse.langchain4j.oidc.runtime.OidcModelAuthProvider;
+import io.quarkus.arc.deployment.AdditionalBeanBuildItem;
+import io.quarkus.deployment.annotations.BuildProducer;
+import io.quarkus.deployment.annotations.BuildStep;
+import io.quarkus.deployment.annotations.BuildSteps;
+import io.quarkus.deployment.builditem.FeatureBuildItem;
+
+@BuildSteps(onlyIf = OidcModelAuthProviderProcessor.IsEnabled.class)
+public class OidcModelAuthProviderProcessor {
+    private static final String FEATURE = "langchain4j-oidc-model-auth-provider";
+
+    @BuildStep
+    FeatureBuildItem feature() {
+        return new FeatureBuildItem(FEATURE);
+    }
+
+    @BuildStep
+    public void additionalBeans(BuildProducer<AdditionalBeanBuildItem> additionalBeans) {
+        AdditionalBeanBuildItem.Builder builder = AdditionalBeanBuildItem.builder().setUnremovable();
+        builder.addBeanClass(OidcModelAuthProvider.class);
+        additionalBeans.produce(builder.build());
+    }
+
+    public static class IsEnabled implements BooleanSupplier {
+        OidcModelAuthProviderBuildConfig config;
+
+        public boolean getAsBoolean() {
+            return config.enabled().orElse(true);
+        }
+    }
+}

model-auth-providers/oidc-model-auth-provider/pom.xml

@@ -0,0 +1,20 @@
+<?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>
+    <parent>
+        <groupId>io.quarkiverse.langchain4j</groupId>
+        <artifactId>quarkus-langchain4j-parent</artifactId>
+        <version>999-SNAPSHOT</version>
+        <relativePath>../../pom.xml</relativePath>
+    </parent>
+    <artifactId>quarkus-langchain4j-oidc-model-auth-provider-parent</artifactId>
+    <name>Quarkus LangChain4j - OpenId Connect (OIDC) ModelAuthProvider - Parent</name>
+    <packaging>pom</packaging>
+
+    <modules>
+        <module>deployment</module>
+        <module>runtime</module>
+    </modules>
+
+
+</project>

model-auth-providers/oidc-model-auth-provider/runtime/pom.xml

@@ -0,0 +1,65 @@
+<?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>
+    <parent>
+        <groupId>io.quarkiverse.langchain4j</groupId>
+        <artifactId>quarkus-langchain4j-oidc-model-auth-provider-parent</artifactId>
+        <version>999-SNAPSHOT</version>
+    </parent>
+    <artifactId>quarkus-langchain4j-oidc-model-auth-provider</artifactId>
+    <name>Quarkus LangChain4j - OpenId Connect (OIDC) ModelAuthProvider - Runtime</name>
+    <dependencies>
+        <dependency>
+            <groupId>io.quarkus</groupId>
+            <artifactId>quarkus-arc</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.quarkus.security</groupId>
+            <artifactId>quarkus-security</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.quarkiverse.langchain4j</groupId>
+            <artifactId>quarkus-langchain4j-core</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>io.quarkus</groupId>
+            <artifactId>quarkus-junit5-internal</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>io.quarkus</groupId>
+                <artifactId>quarkus-extension-maven-plugin</artifactId>
+                <version>${quarkus.version}</version>
+                <executions>
+                    <execution>
+                        <phase>compile</phase>
+                        <goals>
+                            <goal>extension-descriptor</goal>
+                        </goals>
+                        <configuration>
+                            <deployment>${project.groupId}:${project.artifactId}-deployment:${project.version}</deployment>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <annotationProcessorPaths>
+                        <path>
+                            <groupId>io.quarkus</groupId>
+                            <artifactId>quarkus-extension-processor</artifactId>
+                            <version>${quarkus.version}</version>
+                        </path>
+                    </annotationProcessorPaths>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>

model-auth-providers/oidc-model-auth-provider/runtime/src/main/java/io/quarkiverse/langchain4j/oidc/runtime/OidcModelAuthProvider.java

@@ -0,0 +1,17 @@
+package io.quarkiverse.langchain4j.oidc.runtime;
+
+import jakarta.enterprise.inject.Instance;
+import jakarta.inject.Inject;
+
+import io.quarkiverse.langchain4j.runtime.auth.ModelAuthProvider;
+import io.quarkus.security.credential.TokenCredential;
+
+public class OidcModelAuthProvider implements ModelAuthProvider {
+    @Inject
+    Instance<TokenCredential> tokenCredential;
+
+    @Override
+    public String getAuthorization(Input input) {
+        return tokenCredential.isResolvable() ? "Bearer " + tokenCredential.get().getToken() : null;
+    }
+}

model-auth-providers/oidc-model-auth-provider/runtime/src/main/resources/META-INF/quarkus-extension.yaml

@@ -0,0 +1,14 @@
+name: LangChain4j OpenId Connect (OIDC) ModelAuthProvider
+artifact: ${project.groupId}:${project.artifactId}:${project.version}
+description: Provides ModelAuthProvider which uses OIDC bearer or authorization code flow access tokens
+metadata:
+  keywords:
+    - ai
+    - langchain4j
+    - oidc
+    - security
+  guide: "https://docs.quarkiverse.io/quarkus-langchain4j/dev/index.html"
+  categories:
+    - "security"
+  status: "experimental"
+

model-providers/vertex-ai-gemini/deployment/src/test/java/io/quarkiverse/langchain4j/vertexai/gemini/deployment/VertexAiGeminiChatLanguageModelSmokeTest.java

@@ -17,9 +17,9 @@
 import com.github.tomakehurst.wiremock.verification.LoggedRequest;
 
 import dev.langchain4j.model.chat.ChatLanguageModel;
+import io.quarkiverse.langchain4j.runtime.auth.ModelAuthProvider;
 import io.quarkiverse.langchain4j.testing.internal.WiremockAware;
 import io.quarkiverse.langchain4j.vertexai.runtime.gemini.VertexAiGeminiChatLanguageModel;
-import io.quarkiverse.langchain4j.vertexai.runtime.gemini.VertxAiGeminiRestApi;
 import io.quarkus.arc.ClientProxy;
 import io.quarkus.test.QuarkusUnitTest;
 
@@ -111,11 +111,13 @@ void test() {
     }
 
     @Singleton
-    public static class DummyAuthProvider implements VertxAiGeminiRestApi.AuthProvider {
+    public static class DummyAuthProvider implements ModelAuthProvider {
+
         @Override
-        public String getBearerToken() {
-            return API_KEY;
+        public String getAuthorization(Input input) {
+            return "Bearer " + API_KEY;
         }
+
     }
 
 }

model-providers/vertex-ai-gemini/runtime/src/main/java/io/quarkiverse/langchain4j/vertexai/runtime/gemini/VertxAiGeminiRestApi.java

@@ -5,15 +5,19 @@
 
 import java.io.IOException;
 import java.io.UncheckedIOException;
+import java.net.URI;
 import java.util.concurrent.ExecutorService;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
-import jakarta.enterprise.context.ApplicationScoped;
+import jakarta.enterprise.inject.Instance;
+import jakarta.inject.Inject;
 import jakarta.ws.rs.BeanParam;
 import jakarta.ws.rs.POST;
 import jakarta.ws.rs.Path;
+import jakarta.ws.rs.core.MultivaluedMap;
 
+import org.eclipse.microprofile.context.ManagedExecutor;
 import org.eclipse.microprofile.rest.client.annotation.RegisterProvider;
 import org.jboss.logging.Logger;
 import org.jboss.resteasy.reactive.RestPath;
@@ -25,7 +29,9 @@
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.google.auth.oauth2.GoogleCredentials;
 
-import io.quarkus.arc.DefaultBean;
+import io.quarkiverse.langchain4j.runtime.auth.ModelAuthProvider;
+import io.quarkiverse.langchain4j.runtime.auth.ModelAuthProvider.Input;
+import io.quarkiverse.langchain4j.vertexai.runtime.gemini.config.ChatModelConfig;
 import io.quarkus.rest.client.reactive.jackson.ClientObjectMapper;
 import io.vertx.core.Handler;
 import io.vertx.core.MultiMap;
@@ -102,17 +108,10 @@ public ApiMetadata build() {
         }
     }
 
-    interface AuthProvider {
-
-        String getBearerToken();
-    }
-
-    @ApplicationScoped
-    @DefaultBean
-    class ApplicationDefaultAuthProvider implements AuthProvider {
+    class ApplicationDefaultAuthProvider implements ModelAuthProvider {
 
         @Override
-        public String getBearerToken() {
+        public String getAuthorization(Input input) {
             try {
                 var credentials = GoogleCredentials.getApplicationDefault();
                 credentials.refreshIfExpired();
@@ -126,11 +125,17 @@ public String getBearerToken() {
     class TokenFilter implements ResteasyReactiveClientRequestFilter {
 
         private final ExecutorService executorService;
-        private final AuthProvider authProvider;
+        private final ModelAuthProvider defaultAuthorizer;
+        private final ModelAuthProvider authorizer;
+
+        @Inject
+        Instance<ChatModelConfig> model;
 
-        public TokenFilter(ExecutorService executorService, AuthProvider authProvider) {
+        public TokenFilter(ManagedExecutor executorService) {
             this.executorService = executorService;
-            this.authProvider = authProvider;
+            this.defaultAuthorizer = new ApplicationDefaultAuthProvider();
+            this.authorizer = ModelAuthProvider.resolve(
+                    model != null && model.isResolvable() ? model.get().modelId() : null).orElse(null);
         }
 
         @Override
@@ -140,14 +145,25 @@ public void filter(ResteasyReactiveClientRequestContext context) {
                 @Override
                 public void run() {
                     try {
-                        context.getHeaders().add("Authorization", "Bearer " + authProvider.getBearerToken());
+                        final Input authInput = new AuthInputImpl(context.getMethod(), context.getUri(), context.getHeaders());
+                        String authorization = authorizer != null ? authorizer.getAuthorization(authInput) : null;
+                        if (authorization == null) {
+                            authorization = defaultAuthorizer.getAuthorization(authInput);
+                        }
+                        context.getHeaders().add("Authorization", authorization);
                         context.resume();
                     } catch (Exception e) {
                         context.resume(e);
                     }
                 }
             });
         }
+
+        private record AuthInputImpl(
+                String method,
+                URI uri,
+                MultivaluedMap<String, Object> headers) implements ModelAuthProvider.Input {
+        }
     }
 
     class VertxAiClientLogger implements ClientLogger {

model-providers/vertex-ai-gemini/runtime/src/main/java/io/quarkiverse/langchain4j/vertexai/runtime/gemini/config/LangChain4jVertexAiGeminiConfig.java

@@ -61,7 +61,7 @@ interface VertexAiGeminiConfig {
         Optional<String> baseUrl();
 
         /**
-         * Whether to enable the integration. Defaults to {@code true}, which means requests are made to the Anthropic
+         * Whether to enable the integration. Defaults to {@code true}, which means requests are made to the Vertex AI Gemini
          * provider.
          * Set to {@code false} to disable all requests.
          */

pom.xml

@@ -42,6 +42,8 @@
     <module>model-providers/vertex-ai-gemini</module>
     <module>model-providers/watsonx</module>
 
+    <module>model-auth-providers/oidc-model-auth-provider</module>
+
     <module>quarkus-integrations/websockets-next</module>
 
     <module>rag/easy-rag</module>
@@ -199,6 +201,7 @@
         <module>samples/review-triage</module>
         <module>samples/fraud-detection</module>
         <module>samples/secure-fraud-detection</module>
+        <module>samples/secure-vertex-ai-gemini-poem</module>
         <module>samples/chatbot</module>
         <module>samples/chatbot-easy-rag</module>
         <module>samples/sql-chatbot</module>