Examples with RaftServer org.apache.ignite.internal.raft.server.RaftServer used on opensource projects

Example 1 with RaftServer

use of org.apache.ignite.internal.raft.server.RaftServer in project ignite-3 by apache.

the class ItMetaStorageRaftGroupTest method testRangeNextWorksCorrectlyAfterLeaderChange.

/**
 * Tests that {@link MetaStorageService#range(ByteArray, ByteArray, long)}} next command works correctly
 * after leader changing.
 *
 * @throws Exception If failed.
 */
@Test
public void testRangeNextWorksCorrectlyAfterLeaderChange() throws Exception {
    final AtomicInteger replicatorStartedCounter = new AtomicInteger(0);
    final AtomicInteger replicatorStoppedCounter = new AtomicInteger(0);
    when(mockStorage.range(EXPECTED_RESULT_ENTRY1.key().bytes(), new byte[] { 4 })).thenAnswer(invocation -> {
        List<org.apache.ignite.internal.metastorage.server.Entry> entries = new ArrayList<>(List.of(EXPECTED_SRV_RESULT_ENTRY1, EXPECTED_SRV_RESULT_ENTRY2));
        return new Cursor<org.apache.ignite.internal.metastorage.server.Entry>() {

            private final Iterator<org.apache.ignite.internal.metastorage.server.Entry> it = entries.iterator();

            @Override
            public void close() {
            }

            @NotNull
            @Override
            public Iterator<org.apache.ignite.internal.metastorage.server.Entry> iterator() {
                return it;
            }

            @Override
            public boolean hasNext() {
                return it.hasNext();
            }

            @Override
            public org.apache.ignite.internal.metastorage.server.Entry next() {
                return it.next();
            }
        };
    });
    List<Pair<RaftServer, RaftGroupService>> raftServersRaftGroups = prepareJraftMetaStorages(replicatorStartedCounter, replicatorStoppedCounter);
    List<RaftServer> raftServers = raftServersRaftGroups.stream().map(p -> p.key).collect(Collectors.toList());
    NetworkAddress oldLeader = raftServersRaftGroups.get(0).value.leader().address();
    Optional<RaftServer> oldLeaderServer = raftServers.stream().filter(s -> s.clusterService().topologyService().localMember().address().equals(oldLeader)).findFirst();
    // Server that will be alive after we stop leader.
    Optional<RaftServer> liveServer = raftServers.stream().filter(s -> !s.clusterService().topologyService().localMember().address().equals(oldLeader)).findFirst();
    if (oldLeaderServer.isEmpty() || liveServer.isEmpty()) {
        fail();
    }
    RaftGroupService raftGroupServiceOfLiveServer = raftServersRaftGroups.stream().filter(p -> p.key.equals(liveServer.get())).findFirst().get().value;
    MetaStorageService metaStorageSvc = new MetaStorageServiceImpl(raftGroupServiceOfLiveServer, "some_node");
    Cursor<Entry> cursor = metaStorageSvc.range(EXPECTED_RESULT_ENTRY1.key(), new ByteArray(new byte[] { 4 }));
    assertTrue(TestUtils.waitForCondition(() -> replicatorStartedCounter.get() == 2, 5_000), replicatorStartedCounter.get() + "");
    assertTrue(cursor.hasNext());
    assertEquals(EXPECTED_RESULT_ENTRY1, (cursor.iterator().next()));
    // Ensure that leader has not been changed.
    // In a stable topology unexpected leader election shouldn't happen.
    assertTrue(TestUtils.waitForCondition(() -> replicatorStartedCounter.get() == 2, 5_000), replicatorStartedCounter.get() + "");
    // stop leader
    oldLeaderServer.get().stopRaftGroup(METASTORAGE_RAFT_GROUP_NAME);
    oldLeaderServer.get().stop();
    cluster.stream().filter(c -> c.topologyService().localMember().address().equals(oldLeader)).findFirst().get().stop();
    raftGroupServiceOfLiveServer.refreshLeader().get();
    assertNotSame(oldLeader, raftGroupServiceOfLiveServer.leader().address());
    // ensure that leader has been changed only once
    assertTrue(TestUtils.waitForCondition(() -> replicatorStartedCounter.get() == 4, 5_000), replicatorStartedCounter.get() + "");
    assertTrue(TestUtils.waitForCondition(() -> replicatorStoppedCounter.get() == 2, 5_000), replicatorStoppedCounter.get() + "");
    assertTrue(cursor.hasNext());
    assertEquals(EXPECTED_RESULT_ENTRY2, (cursor.iterator().next()));
}

Example 2 with RaftServer

use of org.apache.ignite.internal.raft.server.RaftServer in project ignite-3 by apache.

the class ItJraftCounterServerTest method testCreateSnapshotGracefulFailure.

@Test
public void testCreateSnapshotGracefulFailure() throws Exception {
    listenerFactory = () -> new CounterListener() {

        @Override
        public void onSnapshotSave(Path path, Consumer<Throwable> doneClo) {
            doneClo.accept(new IgniteInternalException("Very bad"));
        }
    };
    startCluster();
    RaftGroupService client1 = clients.get(0);
    RaftGroupService client2 = clients.get(1);
    client1.refreshLeader().get();
    client2.refreshLeader().get();
    RaftServer server = servers.get(0);
    Peer peer = server.localPeer(COUNTER_GROUP_0);
    long val = applyIncrements(client1, 1, 10);
    assertEquals(sum(10), val);
    try {
        client1.snapshot(peer).get();
        fail();
    } catch (Exception e) {
        assertTrue(e.getCause() instanceof RaftException);
    }
}