| /* |
| * 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.samza.system; |
| |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.ImmutableMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.NoSuchElementException; |
| import org.apache.samza.Partition; |
| import org.junit.Assert; |
| import org.junit.Test; |
| import org.mockito.stubbing.OngoingStubbing; |
| |
| import static org.mockito.Mockito.any; |
| import static org.mockito.Mockito.anyLong; |
| import static org.mockito.Mockito.mock; |
| import static org.mockito.Mockito.when; |
| |
| |
| public class TestBoundedSSPIterator { |
| private static final SystemStreamPartition SSP = new SystemStreamPartition("test", "test", new Partition(0)); |
| |
| @Test |
| public void testHasNextFalseWhenEnvelopeOutOfBounds() throws InterruptedException { |
| SystemConsumer mockConsumer = mock(SystemConsumer.class); |
| SystemAdmin mockAdmin = buildMockSystemAdmin(); |
| |
| int numMessages = 10; |
| long endOffset = 5; |
| |
| OngoingStubbing<Map<SystemStreamPartition, List<IncomingMessageEnvelope>>> stubbing = |
| when(mockConsumer.poll(any(), anyLong())); |
| for (int i = 0; i < numMessages; i++) { |
| IncomingMessageEnvelope ime = new IncomingMessageEnvelope(SSP, String.valueOf(i), null, i); |
| stubbing = stubbing.thenReturn(ImmutableMap.of(SSP, ImmutableList.of(ime))); |
| } |
| stubbing.thenReturn(ImmutableMap.of(SSP, ImmutableList.of())); |
| |
| BoundedSSPIterator iter = new BoundedSSPIterator(mockConsumer, SSP, String.valueOf(endOffset), mockAdmin); |
| |
| int consumed = 0; |
| while (iter.hasNext()) { |
| iter.next(); |
| consumed++; |
| } |
| Assert.assertEquals(consumed, endOffset + 1); |
| |
| try { |
| iter.next(); |
| Assert.fail("Iterator next call should have failed due to bound check"); |
| } catch (NoSuchElementException e) { |
| } |
| } |
| |
| @Test |
| public void testConsumeAllWithNullBound() throws InterruptedException { |
| SystemConsumer mockConsumer = mock(SystemConsumer.class); |
| SystemAdmin mockAdmin = buildMockSystemAdmin(); |
| |
| int numMessages = 10; |
| String endOffset = null; |
| |
| OngoingStubbing<Map<SystemStreamPartition, List<IncomingMessageEnvelope>>> stubbing = |
| when(mockConsumer.poll(any(), anyLong())); |
| for (int i = 0; i < numMessages; i++) { |
| IncomingMessageEnvelope ime = new IncomingMessageEnvelope(SSP, String.valueOf(i), null, i); |
| stubbing = stubbing.thenReturn(ImmutableMap.of(SSP, ImmutableList.of(ime))); |
| } |
| stubbing.thenReturn(ImmutableMap.of(SSP, ImmutableList.of())); |
| |
| BoundedSSPIterator iter = new BoundedSSPIterator(mockConsumer, SSP, endOffset, mockAdmin); |
| |
| int consumed = 0; |
| while (iter.hasNext()) { |
| iter.next(); |
| consumed++; |
| } |
| |
| Assert.assertEquals(consumed, numMessages); |
| |
| Assert.assertFalse(iter.hasNext()); |
| try { |
| iter.next(); |
| Assert.fail("Iterator next call should have failed due to bound check"); |
| } catch (NoSuchElementException e) { |
| } |
| } |
| |
| private SystemAdmin buildMockSystemAdmin() { |
| SystemAdmin mockAdmin = mock(SystemAdmin.class); |
| when(mockAdmin.offsetComparator(any(), any())).thenAnswer(invocation -> { |
| String offset1 = invocation.getArgumentAt(0, String.class); |
| String offset2 = invocation.getArgumentAt(1, String.class); |
| |
| if (offset1 == null || offset2 == null) { |
| return -1; |
| } |
| |
| return Long.valueOf(offset1).compareTo(Long.valueOf(offset2)); |
| }); |
| return mockAdmin; |
| } |
| } |