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.common.security.oauthbearer.internals.secured;
  
  import org.apache.kafka.common.utils.MockTime;
  import org.apache.kafka.common.utils.Time;
  
  import org.junit.jupiter.api.Test;
  
  import java.io.IOException;
  import java.util.concurrent.ExecutionException;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  
  public class RetryTest extends OAuthBearerTest {
  
      @Test
      public void test() throws ExecutionException {
          Exception[] attempts = new Exception[] {
              new IOException("pretend connect error"),
              new IOException("pretend timeout error"),
              new IOException("pretend read error"),
              null    // success!
          };
          long retryWaitMs = 1000;
          long maxWaitMs = 10000;
          Retryable<String> call = createRetryable(attempts);
  
          Time time = new MockTime(0, 0, 0);
          assertEquals(0L, time.milliseconds());
          Retry<String> r = new Retry<>(time, retryWaitMs, maxWaitMs);
          r.execute(call);
  
          long secondWait = retryWaitMs * 2;
          long thirdWait = retryWaitMs * 4;
          long totalWait = retryWaitMs + secondWait + thirdWait;
          assertEquals(totalWait, time.milliseconds());
      }
  
      @Test
      public void testIOExceptionFailure() {
          Exception[] attempts = new Exception[] {
              new IOException("pretend connect error"),
              new IOException("pretend timeout error"),
              new IOException("pretend read error"),
              new IOException("pretend another read error"),
          };
          long retryWaitMs = 1000;
          long maxWaitMs = 1000 + 2000 + 3999;
          Retryable<String> call = createRetryable(attempts);
  
          Time time = new MockTime(0, 0, 0);
          assertEquals(0L, time.milliseconds());
          Retry<String> r = new Retry<>(time, retryWaitMs, maxWaitMs);
  
          assertThrows(ExecutionException.class, () -> r.execute(call));
  
          assertEquals(maxWaitMs, time.milliseconds());
      }
  
      @Test
      public void testRuntimeExceptionFailureOnLastAttempt() {
          Exception[] attempts = new Exception[] {
              new IOException("pretend connect error"),
              new IOException("pretend timeout error"),
              new NullPointerException("pretend JSON node /userId in response is null")
          };
          long retryWaitMs = 1000;
          long maxWaitMs = 10000;
          Retryable<String> call = createRetryable(attempts);
  
          Time time = new MockTime(0, 0, 0);
          assertEquals(0L, time.milliseconds());
          Retry<String> r = new Retry<>(time, retryWaitMs, maxWaitMs);
  
          assertThrows(RuntimeException.class, () -> r.execute(call));
  
          long secondWait = retryWaitMs * 2;
          long totalWait = retryWaitMs + secondWait;
          assertEquals(totalWait, time.milliseconds());
      }
  
      @Test
      public void testRuntimeExceptionFailureOnFirstAttempt() {
          Exception[] attempts = new Exception[] {
              new NullPointerException("pretend JSON node /userId in response is null"),
              null
          };
          long retryWaitMs = 1000;
          long maxWaitMs = 10000;
          Retryable<String> call = createRetryable(attempts);
  
          Time time = new MockTime(0, 0, 0);
          assertEquals(0L, time.milliseconds());
          Retry<String> r = new Retry<>(time, retryWaitMs, maxWaitMs);
  
          assertThrows(RuntimeException.class, () -> r.execute(call));
  
          assertEquals(0, time.milliseconds());
      }
  
      @Test
      public void testUseMaxTimeout() {
          Exception[] attempts = new Exception[] {
              new IOException("pretend connect error"),
              new IOException("pretend timeout error"),
              new IOException("pretend read error")
          };
          long retryWaitMs = 5000;
          long maxWaitMs = 5000;
          Retryable<String> call = createRetryable(attempts);
  
          Time time = new MockTime(0, 0, 0);
          assertEquals(0L, time.milliseconds());
          Retry<String> r = new Retry<>(time, retryWaitMs, maxWaitMs);
  
          assertThrows(ExecutionException.class, () -> r.execute(call));
  
          assertEquals(maxWaitMs, time.milliseconds());
      }
  
  }
  