Auth Manager API part 4: RESTClient, HTTPClient

core/src/main/java/org/apache/iceberg/rest/BaseHTTPClient.java

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+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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 org.apache.iceberg.rest;
+
+import java.util.Map;
+import java.util.function.Consumer;
+import java.util.function.Supplier;
+import org.apache.iceberg.rest.HTTPRequest.HTTPMethod;
+import org.apache.iceberg.rest.auth.AuthSession;
+import org.apache.iceberg.rest.responses.ErrorResponse;
+
+/**
+ * A base class for {@link RESTClient} implementations.
+ *
+ * <p>All methods in {@link RESTClient} are implemented in the same way: first, an {@link
+ * HTTPRequest} is {@linkplain #buildRequest(HTTPMethod, String, Map, Map, Object) built from the
+ * method arguments}, then {@linkplain #execute(HTTPRequest, Class, Consumer, Consumer) executed}.
+ *
+ * <p>This allows subclasses to provide a consistent way to execute all requests, regardless of the
+ * method or arguments.
+ */
+public abstract class BaseHTTPClient implements RESTClient {
+
+  @Override
+  public abstract RESTClient withAuthSession(AuthSession session);
+
+  @Override
+  public void head(
+      String path, Supplier<Map<String, String>> headers, Consumer<ErrorResponse> errorHandler) {
+    HTTPRequest request = buildRequest(HTTPMethod.HEAD, path, null, headers.get(), null);
+    execute(request, null, errorHandler, h -> {});
+  }
+
+  @Override
+  public void head(String path, Map<String, String> headers, Consumer<ErrorResponse> errorHandler) {
+    HTTPRequest request = buildRequest(HTTPMethod.HEAD, path, null, headers, null);
+    execute(request, null, errorHandler, h -> {});
+  }
+
+  @Override
+  public <T extends RESTResponse> T delete(
+      String path,
+      Map<String, String> queryParams,
+      Class<T> responseType,
+      Supplier<Map<String, String>> headers,
+      Consumer<ErrorResponse> errorHandler) {
+    HTTPRequest request = buildRequest(HTTPMethod.DELETE, path, queryParams, headers.get(), null);
+    return execute(request, responseType, errorHandler, h -> {});
+  }
+
+  @Override
+  public <T extends RESTResponse> T delete(
+      String path,
+      Class<T> responseType,
+      Supplier<Map<String, String>> headers,
+      Consumer<ErrorResponse> errorHandler) {
+    HTTPRequest request = buildRequest(HTTPMethod.DELETE, path, null, headers.get(), null);
+    return execute(request, responseType, errorHandler, h -> {});
+  }
+
+  @Override
+  public <T extends RESTResponse> T delete(
+      String path,
+      Class<T> responseType,
+      Map<String, String> headers,
+      Consumer<ErrorResponse> errorHandler) {
+    HTTPRequest request = buildRequest(HTTPMethod.DELETE, path, null, headers, null);
+    return execute(request, responseType, errorHandler, h -> {});
+  }
+
+  @Override
+  public <T extends RESTResponse> T delete(
+      String path,
+      Map<String, String> queryParams,
+      Class<T> responseType,
+      Map<String, String> headers,
+      Consumer<ErrorResponse> errorHandler) {
+    HTTPRequest request = buildRequest(HTTPMethod.DELETE, path, queryParams, headers, null);
+    return execute(request, responseType, errorHandler, h -> {});
+  }
+
+  @Override
+  public <T extends RESTResponse> T get(
+      String path,
+      Class<T> responseType,
+      Supplier<Map<String, String>> headers,
+      Consumer<ErrorResponse> errorHandler) {
+    HTTPRequest request = buildRequest(HTTPMethod.GET, path, null, headers.get(), null);
+    return execute(request, responseType, errorHandler, h -> {});
+  }
+
+  @Override
+  public <T extends RESTResponse> T get(
+      String path,
+      Class<T> responseType,
+      Map<String, String> headers,
+      Consumer<ErrorResponse> errorHandler) {
+    HTTPRequest request = buildRequest(HTTPMethod.GET, path, null, headers, null);
+    return execute(request, responseType, errorHandler, h -> {});
+  }
+
+  @Override
+  public <T extends RESTResponse> T get(
+      String path,
+      Map<String, String> queryParams,
+      Class<T> responseType,
+      Supplier<Map<String, String>> headers,
+      Consumer<ErrorResponse> errorHandler) {
+    HTTPRequest request = buildRequest(HTTPMethod.GET, path, queryParams, headers.get(), null);
+    return execute(request, responseType, errorHandler, h -> {});
+  }
+
+  @Override
+  public <T extends RESTResponse> T get(
+      String path,
+      Map<String, String> queryParams,
+      Class<T> responseType,
+      Map<String, String> headers,
+      Consumer<ErrorResponse> errorHandler) {
+    HTTPRequest request = buildRequest(HTTPMethod.GET, path, queryParams, headers, null);
+    return execute(request, responseType, errorHandler, h -> {});
+  }
+
+  @Override
+  public <T extends RESTResponse> T post(
+      String path,
+      RESTRequest body,
+      Class<T> responseType,
+      Supplier<Map<String, String>> headers,
+      Consumer<ErrorResponse> errorHandler) {
+    HTTPRequest request = buildRequest(HTTPMethod.POST, path, null, headers.get(), body);
+    return execute(request, responseType, errorHandler, h -> {});
+  }
+
+  @Override
+  public <T extends RESTResponse> T post(
+      String path,
+      RESTRequest body,
+      Class<T> responseType,
+      Supplier<Map<String, String>> headers,
+      Consumer<ErrorResponse> errorHandler,
+      Consumer<Map<String, String>> responseHeaders) {
+    HTTPRequest request = buildRequest(HTTPMethod.POST, path, null, headers.get(), body);
+    return execute(request, responseType, errorHandler, responseHeaders);
+  }
+
+  @Override
+  public <T extends RESTResponse> T post(
+      String path,
+      RESTRequest body,
+      Class<T> responseType,
+      Map<String, String> headers,
+      Consumer<ErrorResponse> errorHandler,
+      Consumer<Map<String, String>> responseHeaders) {
+    HTTPRequest request = buildRequest(HTTPMethod.POST, path, null, headers, body);
+    return execute(request, responseType, errorHandler, responseHeaders);
+  }
+
+  @Override
+  public <T extends RESTResponse> T post(
+      String path,
+      RESTRequest body,
+      Class<T> responseType,
+      Map<String, String> headers,
+      Consumer<ErrorResponse> errorHandler) {
+    HTTPRequest request = buildRequest(HTTPMethod.POST, path, null, headers, body);
+    return execute(request, responseType, errorHandler, h -> {});
+  }
+
+  @Override
+  public <T extends RESTResponse> T postForm(
+      String path,
+      Map<String, String> formData,
+      Class<T> responseType,
+      Supplier<Map<String, String>> headers,
+      Consumer<ErrorResponse> errorHandler) {
+    HTTPRequest request = buildRequest(HTTPMethod.POST, path, null, headers.get(), formData);
+    return execute(request, responseType, errorHandler, h -> {});
+  }
+
+  @Override
+  public <T extends RESTResponse> T postForm(
+      String path,
+      Map<String, String> formData,
+      Class<T> responseType,
+      Map<String, String> headers,
+      Consumer<ErrorResponse> errorHandler) {
+    HTTPRequest request = buildRequest(HTTPMethod.POST, path, null, headers, formData);
+    return execute(request, responseType, errorHandler, h -> {});
+  }
+
+  protected abstract HTTPRequest buildRequest(
+      HTTPMethod method,
+      String path,
+      Map<String, String> queryParams,
+      Map<String, String> headers,
+      Object body);
+
+  protected abstract <T extends RESTResponse> T execute(
+      HTTPRequest request,
+      Class<T> responseType,
+      Consumer<ErrorResponse> errorHandler,
+      Consumer<Map<String, String>> responseHeaders);
+}