Refactor the way the dynamic OidcClient is used

security-openid-connect-client-quickstart/src/main/java/org/acme/security/openid/connect/client/FrontendResource.java

@@ -1,15 +1,9 @@
 package org.acme.security.openid.connect.client;
 
-import java.util.Map;
-
-import org.eclipse.microprofile.config.inject.ConfigProperty;
 import org.eclipse.microprofile.rest.client.inject.RestClient;
 
-import io.quarkus.oidc.client.OidcClient;
-import io.quarkus.oidc.client.OidcClientConfig;
-import io.quarkus.oidc.client.OidcClientConfig.Grant.Type;
-import io.quarkus.oidc.client.OidcClients;
 import io.quarkus.oidc.client.Tokens;
+import io.quarkus.oidc.client.runtime.TokensHelper;
 import io.smallrye.mutiny.Uni;
 import jakarta.inject.Inject;
 import jakarta.ws.rs.GET;
@@ -19,11 +13,9 @@
 @Path("/frontend")
 public class FrontendResource {
     @Inject 
-    OidcClients oidcClients;
-
-    @ConfigProperty(name = "quarkus.oidc.auth-server-url")
-    String oidcProviderAddress;
-
+    OidcClientCreator oidcClientCreator;
+    TokensHelper tokenHelper = new TokensHelper();
+
     @Inject
     @RestClient
     RestClientWithOidcClientFilter restClientWithOidcClientFilter;
@@ -54,54 +46,34 @@ public Uni<String> getAdminNameWithOidcClientToken() {
     @Path("user-name-with-oidc-client-token-header-param")
     @Produces("text/plain")
     public Uni<String> getUserNameWithOidcClientTokenHeaderParam() {
-    	Uni<OidcClient> oidcClient = createOidcClientDynamically(); 
-        return oidcClient.onItem()
-        		.transformToUni(client -> client.getTokens().onItem()
-        		.transformToUni(tokens -> restClientWithTokenHeaderParam.getUserName("Bearer " + tokens.getAccessToken())));
+    	return tokenHelper.getTokens(oidcClientCreator.getOidcClient()).onItem()
+        		.transformToUni(tokens -> restClientWithTokenHeaderParam.getUserName("Bearer " + tokens.getAccessToken()));
     }
 
     @GET
     @Path("admin-name-with-oidc-client-token-header-param")
     @Produces("text/plain")
     public Uni<String> getAdminNameWithOidcClientTokenHeaderParam() {
-    	Uni<OidcClient> oidcClient = createOidcClientDynamically();
-    	return oidcClient.onItem()
-        		.transformToUni(client -> client.getTokens().onItem()
-        		.transformToUni(tokens -> restClientWithTokenHeaderParam.getAdminName("Bearer " + tokens.getAccessToken())));
+    	return tokenHelper.getTokens(oidcClientCreator.getOidcClient()).onItem()
+        		.transformToUni(tokens -> restClientWithTokenHeaderParam.getAdminName("Bearer " + tokens.getAccessToken()));
     }
 
     @GET
     @Path("user-name-with-oidc-client-token-header-param-blocking")
     @Produces("text/plain")
     public String getUserNameWithOidcClientTokenHeaderParamBlocking() {
-    	Uni<OidcClient> oidcClient = createOidcClientDynamically(); 
-    	OidcClient client = oidcClient.await().indefinitely();
-        Tokens tokens = client.getTokens().await().indefinitely();
+    	Tokens tokens = tokenHelper.getTokens(oidcClientCreator.getOidcClient()).await().indefinitely();
         return restClientWithTokenHeaderParam.getUserName("Bearer " + tokens.getAccessToken()).await().indefinitely();
     }
 
     @GET
     @Path("admin-name-with-oidc-client-token-header-param-blocking")
     @Produces("text/plain")
     public String getAdminNameWithOidcClientTokenHeaderParamBlocking() {
-    	Uni<OidcClient> oidcClient = createOidcClientDynamically();
-    	OidcClient client = oidcClient.await().indefinitely();
-        Tokens tokens = client.getTokens().await().indefinitely();
+    	Tokens tokens = tokenHelper.getTokens(oidcClientCreator.getOidcClient()).await().indefinitely();
         return restClientWithTokenHeaderParam.getAdminName("Bearer " + tokens.getAccessToken()).await().indefinitely();
     }
 
-    private Uni<OidcClient> createOidcClientDynamically() {
-    	OidcClientConfig cfg = new OidcClientConfig();
-        cfg.setId("myclient");
-        cfg.setAuthServerUrl(oidcProviderAddress);
-        cfg.setClientId("backend-service");
-        cfg.getCredentials().setSecret("secret");
-        cfg.getGrant().setType(Type.PASSWORD);
-        cfg.setGrantOptions(Map.of("password",
-        		Map.of("username", "alice", "password", "alice")));
-        return oidcClients.newClient(cfg);
-	}
-
 	@GET
     @Path("user-name-with-propagated-token")
     @Produces("text/plain")

security-openid-connect-client-quickstart/src/main/java/org/acme/security/openid/connect/client/OidcClientCreator.java

@@ -0,0 +1,46 @@
+package org.acme.security.openid.connect.client;
+
+import java.util.Map;
+
+import org.eclipse.microprofile.config.inject.ConfigProperty;
+
+import io.quarkus.oidc.client.OidcClient;
+import io.quarkus.oidc.client.OidcClientConfig;
+import io.quarkus.oidc.client.OidcClientConfig.Grant.Type;
+import io.quarkus.oidc.client.OidcClients;
+import io.quarkus.runtime.StartupEvent;
+import io.smallrye.mutiny.Uni;
+import jakarta.enterprise.context.ApplicationScoped;
+import jakarta.enterprise.event.Observes;
+import jakarta.inject.Inject;
+
+@ApplicationScoped
+public class OidcClientCreator {
+
+    @Inject
+    OidcClients oidcClients;
+    @ConfigProperty(name = "quarkus.oidc.auth-server-url")
+    String oidcProviderAddress;
+
+    private volatile OidcClient oidcClient;
+
+    public void startup(@Observes StartupEvent event) {
+    	createOidcClient().subscribe().with(client -> {oidcClient = client;});
+    }
+
+    public OidcClient getOidcClient() {
+        return oidcClient;
+    }
+
+    private Uni<OidcClient> createOidcClient() {
+        OidcClientConfig cfg = new OidcClientConfig();
+        cfg.setId("myclient");
+        cfg.setAuthServerUrl(oidcProviderAddress);
+        cfg.setClientId("backend-service");
+        cfg.getCredentials().setSecret("secret");
+        cfg.getGrant().setType(Type.PASSWORD);
+        cfg.setGrantOptions(Map.of("password",
+        		Map.of("username", "alice", "password", "alice")));
+        return oidcClients.newClient(cfg);
+    }
+}