content: /*
   * 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.kafka.clients.admin.internals;
  
  import org.apache.kafka.clients.admin.FenceProducersOptions;
  import org.apache.kafka.clients.admin.internals.AdminApiHandler.ApiResult;
  import org.apache.kafka.common.Node;
  import org.apache.kafka.common.message.InitProducerIdResponseData;
  import org.apache.kafka.common.protocol.Errors;
  import org.apache.kafka.common.requests.InitProducerIdRequest;
  import org.apache.kafka.common.requests.InitProducerIdResponse;
  import org.apache.kafka.common.utils.LogContext;
  import org.apache.kafka.common.utils.ProducerIdAndEpoch;
  
  import org.junit.jupiter.api.Test;
  
  import java.util.Set;
  
  import static java.util.Collections.emptyList;
  import static java.util.Collections.emptyMap;
  import static java.util.Collections.singleton;
  import static java.util.Collections.singletonList;
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertInstanceOf;
  
  public class FenceProducersHandlerTest {
      private final LogContext logContext = new LogContext();
      private final Node node = new Node(1, "host", 1234);
      private final int requestTimeoutMs = 30000;
      private final FenceProducersOptions options = new FenceProducersOptions();
  
      @Test
      public void testBuildRequest() {
          FenceProducersHandler handler = new FenceProducersHandler(options, logContext, requestTimeoutMs);
          Set.of("foo", "bar", "baz").forEach(transactionalId -> assertLookup(handler, transactionalId, requestTimeoutMs));
      }
  
      @Test
      public void testBuildRequestOptionsTimeout() {
          final int optionsTimeoutMs = 50000;
          options.timeoutMs(optionsTimeoutMs);
          FenceProducersHandler handler = new FenceProducersHandler(options, logContext, requestTimeoutMs);
          Set.of("foo", "bar", "baz").forEach(transactionalId -> assertLookup(handler, transactionalId, optionsTimeoutMs));
      }
  
      @Test
      public void testHandleSuccessfulResponse() {
          String transactionalId = "foo";
          CoordinatorKey key = CoordinatorKey.byTransactionalId(transactionalId);
  
          FenceProducersHandler handler = new FenceProducersHandler(options, logContext, requestTimeoutMs);
  
          short epoch = 57;
          long producerId = 7;
          InitProducerIdResponse response = new InitProducerIdResponse(new InitProducerIdResponseData()
              .setProducerEpoch(epoch)
              .setProducerId(producerId));
  
          ApiResult<CoordinatorKey, ProducerIdAndEpoch> result = handler.handleSingleResponse(
              node, key, response);
  
          assertEquals(emptyList(), result.unmappedKeys);
          assertEquals(emptyMap(), result.failedKeys);
          assertEquals(singleton(key), result.completedKeys.keySet());
  
          ProducerIdAndEpoch expected = new ProducerIdAndEpoch(producerId, epoch);
          assertEquals(expected, result.completedKeys.get(key));
      }
  
      @Test
      public void testHandleErrorResponse() {
          String transactionalId = "foo";
          FenceProducersHandler handler = new FenceProducersHandler(options, logContext, requestTimeoutMs);
          assertFatalError(handler, transactionalId, Errors.TRANSACTIONAL_ID_AUTHORIZATION_FAILED);
          assertFatalError(handler, transactionalId, Errors.CLUSTER_AUTHORIZATION_FAILED);
          assertFatalError(handler, transactionalId, Errors.UNKNOWN_SERVER_ERROR);
          assertFatalError(handler, transactionalId, Errors.PRODUCER_FENCED);
          assertFatalError(handler, transactionalId, Errors.TRANSACTIONAL_ID_NOT_FOUND);
          assertFatalError(handler, transactionalId, Errors.INVALID_PRODUCER_EPOCH);
          assertRetriableError(handler, transactionalId, Errors.COORDINATOR_LOAD_IN_PROGRESS);
          assertUnmappedKey(handler, transactionalId, Errors.NOT_COORDINATOR);
          assertUnmappedKey(handler, transactionalId, Errors.COORDINATOR_NOT_AVAILABLE);
          assertRetriableError(handler, transactionalId, Errors.CONCURRENT_TRANSACTIONS);
      }
  
      private void assertFatalError(
          FenceProducersHandler handler,
          String transactionalId,
          Errors error
      ) {
          CoordinatorKey key = CoordinatorKey.byTransactionalId(transactionalId);
          ApiResult<CoordinatorKey, ProducerIdAndEpoch> result = handleResponseError(handler, transactionalId, error);
          assertEquals(emptyList(), result.unmappedKeys);
          assertEquals(Set.of(key), result.failedKeys.keySet());
  
          Throwable throwable = result.failedKeys.get(key);
          assertInstanceOf(error.exception().getClass(), throwable);
      }
  
      private void assertRetriableError(
          FenceProducersHandler handler,
          String transactionalId,
          Errors error
      ) {
          ApiResult<CoordinatorKey, ProducerIdAndEpoch> result = handleResponseError(handler, transactionalId, error);
          assertEquals(emptyList(), result.unmappedKeys);
          assertEquals(emptyMap(), result.failedKeys);
      }
  
      private void assertUnmappedKey(
          FenceProducersHandler handler,
          String transactionalId,
          Errors error
      ) {
          CoordinatorKey key = CoordinatorKey.byTransactionalId(transactionalId);
          ApiResult<CoordinatorKey, ProducerIdAndEpoch> result = handleResponseError(handler, transactionalId, error);
          assertEquals(emptyMap(), result.failedKeys);
          assertEquals(singletonList(key), result.unmappedKeys);
      }
  
      private ApiResult<CoordinatorKey, ProducerIdAndEpoch> handleResponseError(
          FenceProducersHandler handler,
          String transactionalId,
          Errors error
      ) {
          CoordinatorKey key = CoordinatorKey.byTransactionalId(transactionalId);
          Set<CoordinatorKey> keys = Set.of(key);
  
          InitProducerIdResponse response = new InitProducerIdResponse(new InitProducerIdResponseData()
              .setErrorCode(error.code()));
  
          ApiResult<CoordinatorKey, ProducerIdAndEpoch> result = handler.handleResponse(node, keys, response);
          assertEquals(emptyMap(), result.completedKeys);
          return result;
      }
  
      private void assertLookup(FenceProducersHandler handler, String transactionalId, int txnTimeoutMs) {
          CoordinatorKey key = CoordinatorKey.byTransactionalId(transactionalId);
          InitProducerIdRequest.Builder request = handler.buildSingleRequest(1, key);
          assertEquals(transactionalId, request.data.transactionalId());
          assertEquals(txnTimeoutMs, request.data.transactionTimeoutMs());
      }
  }
  