| /* |
| * 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.kinesis.consumer; |
| |
| import java.lang.reflect.Field; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.stream.IntStream; |
| import org.apache.samza.Partition; |
| import org.apache.samza.system.SystemStreamPartition; |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| |
| public class TestSSPAllocator { |
| @Test |
| public void testAllocateAndFree() throws NoAvailablePartitionException, NoSuchFieldException, IllegalAccessException { |
| int numPartitions = 2; |
| String system = "kinesis"; |
| String stream = "stream"; |
| List<SystemStreamPartition> ssps = new ArrayList<>(); |
| IntStream.range(0, numPartitions) |
| .forEach(i -> ssps.add(new SystemStreamPartition(system, stream, new Partition(i)))); |
| |
| SSPAllocator allocator = new SSPAllocator(); |
| ssps.forEach(allocator::free); |
| |
| Assert.assertTrue(isSspAvailable(allocator, ssps.get(0))); |
| Assert.assertTrue(isSspAvailable(allocator, ssps.get(1))); |
| |
| SystemStreamPartition ssp = allocator.allocate(stream); |
| Assert.assertFalse(isSspAvailable(allocator, ssps.get(0))); |
| Assert.assertTrue(isSspAvailable(allocator, ssps.get(1))); |
| Assert.assertEquals(ssp, ssps.get(0)); |
| |
| ssp = allocator.allocate(stream); |
| Assert.assertFalse(isSspAvailable(allocator, ssps.get(0))); |
| Assert.assertFalse(isSspAvailable(allocator, ssps.get(1))); |
| Assert.assertEquals(ssp, ssps.get(1)); |
| |
| allocator.free(ssps.get(1)); |
| Assert.assertFalse(isSspAvailable(allocator, ssps.get(0))); |
| Assert.assertTrue(isSspAvailable(allocator, ssps.get(1))); |
| |
| allocator.free(ssps.get(0)); |
| Assert.assertTrue(isSspAvailable(allocator, ssps.get(0))); |
| Assert.assertTrue(isSspAvailable(allocator, ssps.get(1))); |
| } |
| |
| @Test (expected = NoAvailablePartitionException.class) |
| public void testAssignMoreThanMaxPartitions() throws NoAvailablePartitionException { |
| int numPartitions = 2; |
| String system = "kinesis"; |
| String stream = "stream"; |
| List<SystemStreamPartition> ssps = new ArrayList<>(); |
| IntStream.range(0, numPartitions) |
| .forEach(i -> ssps.add(new SystemStreamPartition(system, stream, new Partition(i)))); |
| |
| SSPAllocator allocator = new SSPAllocator(); |
| ssps.forEach(allocator::free); |
| |
| allocator.allocate(stream); |
| allocator.allocate(stream); |
| allocator.allocate(stream); // An exception should be thrown at this point. |
| } |
| |
| @Test (expected = IllegalArgumentException.class) |
| public void testFreeSameSspTwice() throws NoAvailablePartitionException { |
| int numPartitions = 2; |
| String system = "kinesis"; |
| String stream = "stream"; |
| List<SystemStreamPartition> ssps = new ArrayList<>(); |
| IntStream.range(0, numPartitions) |
| .forEach(i -> ssps.add(new SystemStreamPartition(system, stream, new Partition(i)))); |
| |
| SSPAllocator allocator = new SSPAllocator(); |
| ssps.forEach(allocator::free); |
| |
| SystemStreamPartition ssp = allocator.allocate(stream); |
| allocator.free(ssp); |
| allocator.free(ssp); // An exception should be thrown at this point. |
| } |
| |
| @Test (expected = IllegalArgumentException.class) |
| public void testFreeUnallocatedSsp() throws NoAvailablePartitionException { |
| int numPartitions = 2; |
| String system = "kinesis"; |
| String stream = "stream"; |
| List<SystemStreamPartition> ssps = new ArrayList<>(); |
| IntStream.range(0, numPartitions) |
| .forEach(i -> ssps.add(new SystemStreamPartition(system, stream, new Partition(i)))); |
| |
| SSPAllocator allocator = new SSPAllocator(); |
| ssps.forEach(allocator::free); |
| |
| allocator.allocate(stream); |
| allocator.free(ssps.get(1)); // An exception should be thrown at this point. |
| } |
| |
| @SuppressWarnings("unchecked") |
| private boolean isSspAvailable(SSPAllocator sspAllocator, SystemStreamPartition ssp) throws NoSuchFieldException, IllegalAccessException { |
| Field f = sspAllocator.getClass().getDeclaredField("availableSsps"); |
| f.setAccessible(true); |
| Map<String, Set<SystemStreamPartition>> availableSsps = (Map<String, Set<SystemStreamPartition>>) f.get( |
| sspAllocator); |
| return availableSsps.containsKey(ssp.getStream()) && availableSsps.get(ssp.getStream()).contains(ssp); |
| } |
| } |