fix fabric8io#3294 fabric8io#3303 exposing apigroups and apiresource

CHANGELOG.md

@@ -6,6 +6,9 @@
 #### Improvements
 #### Dependency Upgrade
 #### New Features
+* Fix #3294: Support fetching APIGroupList
+* Fix #3303: Support fetching APIResourceList
+
 #### _**Note**_: Breaking changes in the API
 
 ### 5.7.3 (2021-09-09)

kubernetes-client/src/main/java/io/fabric8/kubernetes/client/BaseClient.java

@@ -21,6 +21,9 @@
 import okhttp3.ConnectionPool;
 import okhttp3.Dispatcher;
 import okhttp3.OkHttpClient;
+import io.fabric8.kubernetes.api.model.APIGroup;
+import io.fabric8.kubernetes.api.model.APIGroupList;
+import io.fabric8.kubernetes.api.model.APIResourceList;
 import io.fabric8.kubernetes.api.model.RootPaths;
 import io.fabric8.kubernetes.client.dsl.base.BaseOperation;
 import io.fabric8.kubernetes.client.utils.HttpClientUtils;
@@ -32,6 +35,8 @@
 
 
 public abstract class BaseClient implements Client, HttpClientAware {
+
+  public static final String APIS = "/apis";
 
   protected OkHttpClient httpClient;
   private URL masterUrl;
@@ -53,7 +58,7 @@ public BaseClient(final Config config) {
 
   public BaseClient(final OkHttpClient httpClient, Config config) {
     try {
-      this.httpClient = httpClient;
+      this.httpClient = config.adaptClient(httpClient);
       this.namespace = config.getNamespace();
       this.configuration = config;
       this.apiVersion = config.getApiVersion();
@@ -134,8 +139,11 @@ public <C> C adapt(Class<C> type) {
 
   @Override
   public RootPaths rootPaths() {
-    return new BaseOperation(new OperationContext().withOkhttpClient(httpClient).withConfig(configuration)) {
-    }.getRootPaths();
+    return newBaseOperation(httpClient, configuration).getRootPaths();
+  }
+
+  static BaseOperation<?, ?, ?> newBaseOperation(OkHttpClient httpClient, Config configuration) {
+    return new BaseOperation(new OperationContext().withOkhttpClient(httpClient).withConfig(configuration)) {};
   }
 
   @Override
@@ -153,4 +161,19 @@ public boolean supportsApiPath(String apiPath) {
     }
     return false;
   }
+
+  @Override
+  public APIGroupList getApiGroups() {
+    return newBaseOperation(httpClient, configuration).restCall(APIGroupList.class, APIS);
+  }
+
+  @Override
+  public APIGroup getApiGroup(String name) {
+    return newBaseOperation(httpClient, configuration).restCall(APIGroup.class, APIS, name);
+  }
+
+  @Override
+  public APIResourceList getApiResources(String groupVersion) {
+    return newBaseOperation(httpClient, configuration).restCall(APIResourceList.class, APIS, groupVersion);
+  }
 }

kubernetes-client/src/main/java/io/fabric8/kubernetes/client/Client.java

@@ -16,6 +16,9 @@
 
 package io.fabric8.kubernetes.client;
 
+import io.fabric8.kubernetes.api.model.APIGroup;
+import io.fabric8.kubernetes.api.model.APIGroupList;
+import io.fabric8.kubernetes.api.model.APIResourceList;
 import io.fabric8.kubernetes.api.model.RootPaths;
 
 import java.io.Closeable;
@@ -48,5 +51,26 @@ public interface Client extends ConfigAware, Closeable {
    */
   boolean supportsApiPath(String path);
 
+  @Override
   void close();
+
+  /**
+   * Returns the api groups
+   * @return the {@link APIGroupList} metadata
+   */
+  APIGroupList getApiGroups();
+
+  /**
+   * Return a single api group
+   * @param name of the group
+   * @return the {@link APIGroup} metadata
+   */
+  APIGroup getApiGroup(String name);
+
+  /**
+   * Return the api resource metadata for the given groupVersion
+   * @param the groupVersion - group/version
+   * @return the {@link APIResourceList} for the groupVersion
+   */
+  APIResourceList getApiResources(String groupVersion);
 }

kubernetes-client/src/main/java/io/fabric8/kubernetes/client/Config.java

@@ -55,6 +55,7 @@
 import io.fabric8.kubernetes.client.utils.Serialization;
 import io.fabric8.kubernetes.client.utils.Utils;
 import io.sundr.builder.annotations.Buildable;
+import okhttp3.OkHttpClient;
 import okhttp3.TlsVersion;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
@@ -1341,4 +1342,8 @@ public Readiness getReadiness() {
     return Readiness.getInstance();
   }
 
+  public OkHttpClient adaptClient(OkHttpClient httpClient) {
+    return httpClient;
+  }
+
 }

kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/base/BaseOperation.java

@@ -195,10 +195,18 @@ public T getMandatory() {
  }
 
   public RootPaths getRootPaths() {
+    return restCall(RootPaths.class);
+  }
+
+  public <Res> Res restCall(Class<Res> result, String... path) {
     try {
       URL requestUrl = new URL(config.getMasterUrl());
-      Request.Builder req = new Request.Builder().get().url(requestUrl);
-      return handleResponse(req, RootPaths.class);
+      String url = requestUrl.toString();
+      if (path != null && path.length > 0) {
+        url = URLUtils.join(url, URLUtils.pathJoin(path));
+      }
+      Request.Builder req = new Request.Builder().get().url(url);
+      return handleResponse(req, result);
     } catch (KubernetesClientException e) {
       if (e.getCode() != HttpURLConnection.HTTP_NOT_FOUND) {
         throw e;

kubernetes-itests/src/test/java/io/fabric8/kubernetes/ApiGroupResourceListsIT.java

@@ -0,0 +1,68 @@
+/**
+ * Copyright (C) 2015 Red Hat, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.fabric8.kubernetes;
+
+import io.fabric8.kubernetes.api.model.APIGroup;
+import io.fabric8.kubernetes.api.model.APIGroupList;
+import io.fabric8.kubernetes.api.model.APIResourceList;
+import io.fabric8.kubernetes.client.KubernetesClient;
+import org.arquillian.cube.kubernetes.api.Session;
+import org.arquillian.cube.kubernetes.impl.requirement.RequiresKubernetes;
+import org.arquillian.cube.requirement.ArquillianConditionalRunner;
+import org.jboss.arquillian.test.api.ArquillianResource;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
+
+@RunWith(ArquillianConditionalRunner.class)
+@RequiresKubernetes
+public class ApiGroupResourceListsIT {
+
+  @ArquillianResource
+  KubernetesClient client;
+
+  @ArquillianResource
+  Session session;
+
+  @Test
+  public void testApiGroups() throws InterruptedException {
+    APIGroupList list = client.getApiGroups();
+
+    assertTrue(list.getGroups().stream().anyMatch(g -> "apps".equals(g.getName())));
+  }
+
+  @Test
+  public void testApiGroup() throws InterruptedException {
+    APIGroup group = client.getApiGroup("apps");
+
+    assertNotNull(group);
+
+    group = client.getApiGroup("apps-that-wont-exist");
+
+    assertNull(group);
+  }
+
+  @Test
+  public void testApiResources() throws InterruptedException {
+    APIResourceList list = client.getApiResources("apps/v1");
+
+    assertTrue(list.getResources().stream().anyMatch(r -> "deployments".equals(r.getName())));
+  }
+}

kubernetes-itests/src/test/java/io/fabric8/kubernetes/EventsIT.java

@@ -28,9 +28,6 @@
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
-import java.time.OffsetDateTime;
-import java.time.format.DateTimeFormatter;
-
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertTrue;

kubernetes-model-generator/kubernetes-model-core/cmd/generate/generate.go

@@ -39,6 +39,8 @@ type Schema struct {
 	Info                 apimachineryversion.Info
 	APIGroup             metav1.APIGroup
 	APIGroupList         metav1.APIGroupList
+	APIResource          metav1.APIResource
+	APIResourceList      metav1.APIResourceList
 	BaseKubernetesList   metav1.List
 	ObjectMeta           metav1.ObjectMeta
 	TypeMeta             metav1.TypeMeta