Examples with MiniRaftCluster org.apache.ratis.MiniRaftCluster used on opensource projects

Example 11 with MiniRaftCluster

use of org.apache.ratis.MiniRaftCluster in project incubator-ratis by apache.

the class ReinitializationBaseTest method runTestReinitializeMultiGroups.

public static <T extends Throwable> void runTestReinitializeMultiGroups(MiniRaftCluster cluster, int[] idIndex, int chosen, CheckedBiConsumer<MiniRaftCluster, RaftGroup, T> checker) throws IOException, InterruptedException, T {
    if (chosen < 0) {
        chosen = ThreadLocalRandom.current().nextInt(idIndex.length);
    }
    final String type = cluster.getClass().getSimpleName() + Arrays.toString(idIndex) + "chosen=" + chosen;
    LOG.info("\n\nrunTestReinitializeMultiGroups with " + type + ": " + cluster.printServers());
    // Start server with an empty conf
    final RaftGroup emptyGroup = new RaftGroup(RaftGroupId.randomId());
    final List<RaftPeerId> ids = Arrays.stream(MiniRaftCluster.generateIds(idIndex[idIndex.length - 1], 0)).map(RaftPeerId::valueOf).collect(Collectors.toList());
    ids.forEach(id -> cluster.putNewServer(id, emptyGroup, true));
    LOG.info("putNewServer: " + cluster.printServers());
    cluster.start();
    LOG.info("start: " + cluster.printServers());
    // Make sure that there are no leaders.
    TimeUnit.SECONDS.sleep(1);
    Assert.assertNull(cluster.getLeader());
    // Reinitialize servers to three groups
    final List<RaftPeer> allPeers = cluster.getPeers();
    Collections.sort(allPeers, Comparator.comparing(p -> p.getId().toString()));
    final RaftGroup[] groups = new RaftGroup[idIndex.length];
    for (int i = 0; i < idIndex.length; i++) {
        final RaftGroupId gid = RaftGroupId.randomId();
        final int previous = i == 0 ? 0 : idIndex[i - 1];
        final RaftPeer[] peers = allPeers.subList(previous, idIndex[i]).toArray(RaftPeer.emptyArray());
        groups[i] = new RaftGroup(gid, peers);
        LOG.info(i + ") starting " + groups[i]);
        for (RaftPeer p : peers) {
            try (final RaftClient client = cluster.createClient(p.getId(), emptyGroup)) {
                client.reinitialize(groups[i], p.getId());
            }
        }
        Assert.assertNotNull(RaftTestUtil.waitForLeader(cluster, true, gid));
        checker.accept(cluster, groups[i]);
    }
    printThreadCount(type, "start groups");
    LOG.info("start groups: " + cluster.printServers());
    // randomly close two of the groups (i.e. reinitialize to empty peers)
    LOG.info("chosen = " + chosen + ", " + groups[chosen]);
    for (int i = 0; i < groups.length; i++) {
        if (i != chosen) {
            final RaftGroup g = groups[i];
            final RaftGroup newGroup = new RaftGroup(g.getGroupId());
            LOG.info(i + ") close " + cluster.printServers(g.getGroupId()));
            for (RaftPeer p : g.getPeers()) {
                try (final RaftClient client = cluster.createClient(p.getId(), g)) {
                    client.reinitialize(newGroup, p.getId());
                }
            }
        }
    }
    printThreadCount(type, "close groups");
    LOG.info("close groups: " + cluster.printServers());
    // update chosen group to use all the peers
    final RaftGroup newGroup = new RaftGroup(groups[chosen].getGroupId());
    for (int i = 0; i < groups.length; i++) {
        if (i != chosen) {
            LOG.info(i + ") reinitialize: " + cluster.printServers(groups[i].getGroupId()));
            for (RaftPeer p : groups[i].getPeers()) {
                try (final RaftClient client = cluster.createClient(p.getId(), groups[i])) {
                    client.reinitialize(newGroup, p.getId());
                }
            }
        }
    }
    LOG.info(chosen + ") setConfiguration: " + cluster.printServers(groups[chosen].getGroupId()));
    try (final RaftClient client = cluster.createClient(groups[chosen])) {
        client.setConfiguration(allPeers.toArray(RaftPeer.emptyArray()));
    }
    Assert.assertNotNull(RaftTestUtil.waitForLeader(cluster, true));
    checker.accept(cluster, groups[chosen]);
    LOG.info("update groups: " + cluster.printServers());
    printThreadCount(type, "update groups");
    cluster.shutdown();
    printThreadCount(type, "shutdown");
}

Example 12 with MiniRaftCluster

use of org.apache.ratis.MiniRaftCluster in project incubator-ratis by apache.

the class ReinitializationBaseTest method testReinitialize.

@Test
public void testReinitialize() throws Exception {
    final MiniRaftCluster cluster = getCluster(0);
    LOG.info("Start testReinitialize" + cluster.printServers());
    // Start server with an empty conf
    final RaftGroupId groupId = RaftGroupId.randomId();
    final RaftGroup group = new RaftGroup(groupId);
    final List<RaftPeerId> ids = Arrays.stream(MiniRaftCluster.generateIds(3, 0)).map(RaftPeerId::valueOf).collect(Collectors.toList());
    ids.forEach(id -> cluster.putNewServer(id, group, true));
    LOG.info("putNewServer: " + cluster.printServers());
    cluster.start();
    LOG.info("start: " + cluster.printServers());
    // Make sure that there are no leaders.
    TimeUnit.SECONDS.sleep(1);
    Assert.assertNull(cluster.getLeader());
    // Reinitialize servers
    final RaftGroup newGroup = new RaftGroup(groupId, cluster.getPeers());
    final RaftClient client = cluster.createClient(newGroup);
    for (RaftPeer p : newGroup.getPeers()) {
        client.reinitialize(newGroup, p.getId());
    }
    Assert.assertNotNull(RaftTestUtil.waitForLeader(cluster, true));
    cluster.shutdown();
}

Example 13 with MiniRaftCluster

use of org.apache.ratis.MiniRaftCluster in project incubator-ratis by apache.

the class ServerInformationBaseTest method runTest.

private void runTest(int num) throws Exception {
    LOG.info("Running server info test with " + num);
    final MiniRaftCluster cluster = newCluster(num);
    cluster.start();
    // all the peers in the cluster are in the same group, get it.
    RaftGroup group = cluster.getGroup();
    List<RaftPeer> peers = cluster.getPeers();
    // is requested.
    for (RaftPeer peer : peers) {
        try (final RaftClient client = cluster.createClient(peer.getId())) {
            RaftClientReply reply = client.serverInformation(peer.getId());
            assertTrue(reply instanceof ServerInformationReply);
            ServerInformationReply info = (ServerInformationReply) reply;
            assertTrue(sameGroup(group, info.getGroup()));
        }
    }
    final int numMessages = 5;
    final long maxCommit;
    {
        // send some messages and get max commit from the last reply
        final RaftClientReply reply = sendMessages(numMessages, cluster);
        maxCommit = reply.getCommitInfos().stream().mapToLong(CommitInfoProto::getCommitIndex).max().getAsLong();
    }
    // kill a follower
    final RaftPeerId killedFollower = cluster.getFollowers().iterator().next().getId();
    cluster.killServer(killedFollower);
    {
        // send more messages and check last reply
        final RaftClientReply reply = sendMessages(numMessages, cluster);
        for (CommitInfoProto i : reply.getCommitInfos()) {
            if (RaftPeerId.valueOf(i.getServer().getId()).equals(killedFollower)) {
                Assert.assertTrue(i.getCommitIndex() <= maxCommit);
            } else {
                Assert.assertTrue(i.getCommitIndex() > maxCommit);
            }
        }
    }
    // check serverInformation
    for (RaftPeer peer : peers) {
        if (peer.getId().equals(killedFollower)) {
            continue;
        }
        try (final RaftClient client = cluster.createClient(peer.getId())) {
            RaftClientReply reply = client.serverInformation(peer.getId());
            assertTrue(reply instanceof ServerInformationReply);
            ServerInformationReply info = (ServerInformationReply) reply;
            assertTrue(sameGroup(group, info.getGroup()));
            for (CommitInfoProto i : info.getCommitInfos()) {
                if (RaftPeerId.valueOf(i.getServer().getId()).equals(killedFollower)) {
                    Assert.assertTrue(i.getCommitIndex() <= maxCommit);
                } else {
                    Assert.assertTrue(i.getCommitIndex() > maxCommit);
                }
            }
        }
    }
    cluster.shutdown();
}