| /* |
| * Copyright 2015 Open Networking Laboratory |
| * |
| * Licensed 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.onosproject.store.intent.impl; |
| |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.onlab.junit.NullScheduledExecutor; |
| import org.onlab.packet.IpAddress; |
| import org.onosproject.cluster.ClusterServiceAdapter; |
| import org.onosproject.cluster.ControllerNode; |
| import org.onosproject.cluster.DefaultControllerNode; |
| import org.onosproject.cluster.Leadership; |
| import org.onosproject.cluster.LeadershipEvent; |
| import org.onosproject.cluster.LeadershipEventListener; |
| import org.onosproject.cluster.LeadershipService; |
| import org.onosproject.cluster.LeadershipServiceAdapter; |
| import org.onosproject.cluster.NodeId; |
| import org.onosproject.net.intent.Key; |
| |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.Objects; |
| import java.util.Set; |
| import java.util.concurrent.CompletableFuture; |
| |
| import static junit.framework.TestCase.assertFalse; |
| import static org.easymock.EasyMock.anyObject; |
| import static org.easymock.EasyMock.anyString; |
| import static org.easymock.EasyMock.createMock; |
| import static org.easymock.EasyMock.expect; |
| import static org.easymock.EasyMock.expectLastCall; |
| import static org.easymock.EasyMock.replay; |
| import static org.easymock.EasyMock.reset; |
| import static org.easymock.EasyMock.verify; |
| import static org.junit.Assert.assertTrue; |
| |
| /** |
| * Unit tests for the PartitionManager class. |
| */ |
| public class PartitionManagerTest { |
| |
| private final LeadershipEvent event |
| = new LeadershipEvent(LeadershipEvent.Type.LEADER_ELECTED, |
| new Leadership(ELECTION_PREFIX + "0", |
| MY_NODE_ID, 0, 0)); |
| |
| private static final NodeId MY_NODE_ID = new NodeId("local"); |
| private static final NodeId OTHER_NODE_ID = new NodeId("other"); |
| private static final NodeId INACTIVE_NODE_ID = new NodeId("inactive"); |
| |
| private static final String ELECTION_PREFIX = "intent-partition-"; |
| |
| private LeadershipService leadershipService; |
| private LeadershipEventListener leaderListener; |
| |
| private PartitionManager partitionManager; |
| |
| @Before |
| public void setUp() { |
| leadershipService = createMock(LeadershipService.class); |
| |
| leadershipService.addListener(anyObject(LeadershipEventListener.class)); |
| expectLastCall().andDelegateTo(new TestLeadershipService()); |
| for (int i = 0; i < PartitionManager.NUM_PARTITIONS; i++) { |
| expect(leadershipService.runForLeadership(ELECTION_PREFIX + i)) |
| .andReturn(CompletableFuture.completedFuture(null)) |
| .times(1); |
| } |
| |
| partitionManager = new PartitionManager() |
| .withScheduledExecutor(new NullScheduledExecutor()); |
| |
| partitionManager.clusterService = new TestClusterService(); |
| partitionManager.leadershipService = leadershipService; |
| } |
| |
| /** |
| * Configures a mock leadership service to have the specified number of |
| * partitions owned by the local node and all other partitions owned by a |
| * (fake) remote node. |
| * |
| * @param numMine number of partitions that should be owned by the local node |
| */ |
| private void setUpLeadershipService(int numMine) { |
| |
| Map<String, Leadership> leaderBoard = new HashMap<>(); |
| |
| for (int i = 0; i < numMine; i++) { |
| expect(leadershipService.getLeader(ELECTION_PREFIX + i)) |
| .andReturn(MY_NODE_ID).anyTimes(); |
| leaderBoard.put(ELECTION_PREFIX + i, |
| new Leadership(ELECTION_PREFIX + i, MY_NODE_ID, 0, 0)); |
| } |
| |
| for (int i = numMine; i < PartitionManager.NUM_PARTITIONS; i++) { |
| expect(leadershipService.getLeader(ELECTION_PREFIX + i)) |
| .andReturn(OTHER_NODE_ID).anyTimes(); |
| |
| leaderBoard.put(ELECTION_PREFIX + i, |
| new Leadership(ELECTION_PREFIX + i, OTHER_NODE_ID, 0, 0)); |
| } |
| |
| expect(leadershipService.getLeaderBoard()).andReturn(leaderBoard).anyTimes(); |
| } |
| |
| /** |
| * Tests that the PartitionManager's activate method correctly runs for |
| * all the leader elections that it should. |
| */ |
| @Test |
| public void testActivate() { |
| reset(leadershipService); |
| |
| leadershipService.addListener(anyObject(LeadershipEventListener.class)); |
| |
| for (int i = 0; i < PartitionManager.NUM_PARTITIONS; i++) { |
| expect(leadershipService.runForLeadership(ELECTION_PREFIX + i)) |
| .andReturn(CompletableFuture.completedFuture(null)) |
| .times(1); |
| } |
| |
| replay(leadershipService); |
| |
| partitionManager.activate(); |
| |
| verify(leadershipService); |
| } |
| |
| /** |
| * Tests that the isMine method returns the correct result based on the |
| * underlying leadership service data. |
| */ |
| @Test |
| public void testIsMine() { |
| // We'll own only the first partition |
| setUpLeadershipService(1); |
| replay(leadershipService); |
| |
| Key myKey = new ControllableHashKey(0); |
| Key notMyKey = new ControllableHashKey(1); |
| |
| assertTrue(partitionManager.isMine(myKey)); |
| assertFalse(partitionManager.isMine(notMyKey)); |
| |
| // Make us the owner of 4 partitions now |
| reset(leadershipService); |
| setUpLeadershipService(4); |
| replay(leadershipService); |
| |
| assertTrue(partitionManager.isMine(myKey)); |
| // notMyKey is now my key because because we're in control of that |
| // partition now |
| assertTrue(partitionManager.isMine(notMyKey)); |
| |
| assertFalse(partitionManager.isMine(new ControllableHashKey(4))); |
| } |
| |
| /** |
| * Tests sending in LeadershipServiceEvents in the case when we have |
| * too many partitions. The event will trigger the partition manager to |
| * schedule a rebalancing activity. |
| */ |
| @Test |
| public void testRebalanceScheduling() { |
| // We have all the partitions so we'll need to relinquish some |
| setUpLeadershipService(PartitionManager.NUM_PARTITIONS); |
| |
| replay(leadershipService); |
| |
| partitionManager.activate(); |
| // Send in the event |
| leaderListener.event(event); |
| |
| assertTrue(partitionManager.rebalanceScheduled.get()); |
| |
| verify(leadershipService); |
| } |
| |
| /** |
| * Tests rebalance will trigger the right now of leadership withdraw calls. |
| */ |
| @Test |
| public void testRebalance() { |
| // We have all the partitions so we'll need to relinquish some |
| setUpLeadershipService(PartitionManager.NUM_PARTITIONS); |
| |
| expect(leadershipService.withdraw(anyString())) |
| .andReturn(CompletableFuture.completedFuture(null)) |
| .times(7); |
| |
| replay(leadershipService); |
| |
| partitionManager.activate(); |
| |
| // trigger rebalance |
| partitionManager.doRebalance(); |
| |
| verify(leadershipService); |
| } |
| |
| /** |
| * Tests that attempts to rebalance when the paritions are already |
| * evenly distributed does not result in any relinquish attempts. |
| */ |
| @Test |
| public void testNoRebalance() { |
| // Partitions are already perfectly balanced among the two active instances |
| setUpLeadershipService(PartitionManager.NUM_PARTITIONS / 2); |
| replay(leadershipService); |
| |
| partitionManager.activate(); |
| |
| // trigger rebalance |
| partitionManager.doRebalance(); |
| |
| verify(leadershipService); |
| |
| reset(leadershipService); |
| // We have a smaller share than we should |
| setUpLeadershipService(PartitionManager.NUM_PARTITIONS / 2 - 1); |
| replay(leadershipService); |
| |
| // trigger rebalance |
| partitionManager.doRebalance(); |
| |
| verify(leadershipService); |
| } |
| |
| /** |
| * LeadershipService that allows us to grab a reference to |
| * PartitionManager's LeadershipEventListener. |
| */ |
| public class TestLeadershipService extends LeadershipServiceAdapter { |
| @Override |
| public void addListener(LeadershipEventListener listener) { |
| leaderListener = listener; |
| } |
| } |
| |
| /** |
| * ClusterService set up with a very simple cluster - 3 nodes, one is the |
| * current node, one is a different active node, and one is an inactive node. |
| */ |
| private class TestClusterService extends ClusterServiceAdapter { |
| |
| private final ControllerNode self = |
| new DefaultControllerNode(MY_NODE_ID, IpAddress.valueOf(1)); |
| private final ControllerNode otherNode = |
| new DefaultControllerNode(OTHER_NODE_ID, IpAddress.valueOf(2)); |
| private final ControllerNode inactiveNode = |
| new DefaultControllerNode(INACTIVE_NODE_ID, IpAddress.valueOf(3)); |
| |
| Set<ControllerNode> nodes; |
| |
| public TestClusterService() { |
| nodes = new HashSet<>(); |
| nodes.add(self); |
| nodes.add(otherNode); |
| nodes.add(inactiveNode); |
| } |
| |
| @Override |
| public ControllerNode getLocalNode() { |
| return self; |
| } |
| |
| @Override |
| public Set<ControllerNode> getNodes() { |
| return nodes; |
| } |
| |
| @Override |
| public ControllerNode getNode(NodeId nodeId) { |
| return nodes.stream() |
| .filter(c -> c.id().equals(nodeId)) |
| .findFirst() |
| .get(); |
| } |
| |
| @Override |
| public ControllerNode.State getState(NodeId nodeId) { |
| return nodeId.equals(INACTIVE_NODE_ID) ? ControllerNode.State.INACTIVE : |
| ControllerNode.State.ACTIVE; |
| } |
| } |
| |
| /** |
| * A key that always hashes to a value provided to the constructor. This |
| * allows us to control the hash of the key for unit tests. |
| */ |
| private class ControllableHashKey extends Key { |
| |
| protected ControllableHashKey(long hash) { |
| super(hash); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(hash()); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (!(obj instanceof ControllableHashKey)) { |
| return false; |
| } |
| |
| ControllableHashKey that = (ControllableHashKey) obj; |
| |
| return Objects.equals(this.hash(), that.hash()); |
| } |
| } |
| } |