AvailableSlotsTest.java example

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 * 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
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 * Unless required by applicable law or agreed to in writing, software
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package org.apache.flink.runtime.instance;

import org.apache.flink.api.common.JobID;
import org.apache.flink.runtime.clusterframework.types.AllocationID;
import org.apache.flink.runtime.clusterframework.types.ResourceID;
import org.apache.flink.runtime.clusterframework.types.ResourceProfile;
import org.apache.flink.runtime.jobmanager.slots.AllocatedSlot;
import org.apache.flink.runtime.jobmanager.slots.SlotAndLocality;
import org.apache.flink.runtime.jobmanager.slots.TaskManagerGateway;
import org.apache.flink.runtime.taskmanager.TaskManagerLocation;
import org.junit.Test;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

public class AvailableSlotsTest {

	static final ResourceProfile DEFAULT_TESTING_PROFILE = new ResourceProfile(1.0, 512);

	static final ResourceProfile DEFAULT_TESTING_BIG_PROFILE = new ResourceProfile(2.0, 1024);

	@Test
	public void testAddAndRemove() throws Exception {
		SlotPool.AvailableSlots availableSlots = new SlotPool.AvailableSlots();

		final ResourceID resource1 = new ResourceID("resource1");
		final ResourceID resource2 = new ResourceID("resource2");

		final AllocatedSlot slot1 = createAllocatedSlot(resource1);
		final AllocatedSlot slot2 = createAllocatedSlot(resource1);
		final AllocatedSlot slot3 = createAllocatedSlot(resource2);

		availableSlots.add(slot1, 1L);
		availableSlots.add(slot2, 2L);
		availableSlots.add(slot3, 3L);

		assertEquals(3, availableSlots.size());
		assertTrue(availableSlots.contains(slot1.getSlotAllocationId()));
		assertTrue(availableSlots.contains(slot2.getSlotAllocationId()));
		assertTrue(availableSlots.contains(slot3.getSlotAllocationId()));
		assertTrue(availableSlots.containsTaskManager(resource1));
		assertTrue(availableSlots.containsTaskManager(resource2));

		availableSlots.removeAllForTaskManager(resource1);

		assertEquals(1, availableSlots.size());
		assertFalse(availableSlots.contains(slot1.getSlotAllocationId()));
		assertFalse(availableSlots.contains(slot2.getSlotAllocationId()));
		assertTrue(availableSlots.contains(slot3.getSlotAllocationId()));
		assertFalse(availableSlots.containsTaskManager(resource1));
		assertTrue(availableSlots.containsTaskManager(resource2));

		availableSlots.removeAllForTaskManager(resource2);

		assertEquals(0, availableSlots.size());
		assertFalse(availableSlots.contains(slot1.getSlotAllocationId()));
		assertFalse(availableSlots.contains(slot2.getSlotAllocationId()));
		assertFalse(availableSlots.contains(slot3.getSlotAllocationId()));
		assertFalse(availableSlots.containsTaskManager(resource1));
		assertFalse(availableSlots.containsTaskManager(resource2));
	}

	@Test
	public void testPollFreeSlot() {
		SlotPool.AvailableSlots availableSlots = new SlotPool.AvailableSlots();

		final ResourceID resource1 = new ResourceID("resource1");
		final AllocatedSlot slot1 = createAllocatedSlot(resource1);

		availableSlots.add(slot1, 1L);

		assertEquals(1, availableSlots.size());
		assertTrue(availableSlots.contains(slot1.getSlotAllocationId()));
		assertTrue(availableSlots.containsTaskManager(resource1));

		assertNull(availableSlots.poll(DEFAULT_TESTING_BIG_PROFILE, null));

		SlotAndLocality slotAndLocality = availableSlots.poll(DEFAULT_TESTING_PROFILE, null);
		assertEquals(slot1, slotAndLocality.slot());
		assertEquals(0, availableSlots.size());
		assertFalse(availableSlots.contains(slot1.getSlotAllocationId()));
		assertFalse(availableSlots.containsTaskManager(resource1));
	}

	static AllocatedSlot createAllocatedSlot(final ResourceID resourceId) {
		TaskManagerLocation mockTaskManagerLocation = mock(TaskManagerLocation.class);
		when(mockTaskManagerLocation.getResourceID()).thenReturn(resourceId);

		TaskManagerGateway mockTaskManagerGateway = mock(TaskManagerGateway.class);

		return new AllocatedSlot(
			new AllocationID(),
			new JobID(),
			mockTaskManagerLocation,
			0,
			DEFAULT_TESTING_PROFILE,
			mockTaskManagerGateway);
	}
}