Examples with RaftClientRequest org.apache.ratis.protocol.RaftClientRequest used on opensource projects

Example 1 with RaftClientRequest

use of org.apache.ratis.protocol.RaftClientRequest in project incubator-ratis by apache.

the class RetryCacheTests method testRetryOnNewLeader.

/**
 * Test retry while the leader changes to another peer
 */
@Test
public void testRetryOnNewLeader() throws Exception {
    final MiniRaftCluster cluster = getCluster();
    RaftTestUtil.waitForLeader(cluster);
    final RaftPeerId leaderId = cluster.getLeaderAndSendFirstMessage().getId();
    final RaftClient client = cluster.createClient(leaderId);
    RaftClientRpc rpc = client.getClientRpc();
    final long callId = 999;
    final long seqNum = 111;
    RaftClientRequest r = cluster.newRaftClientRequest(client.getId(), leaderId, callId, seqNum, new SimpleMessage("message"));
    RaftClientReply reply = rpc.sendRequest(r);
    Assert.assertEquals(callId, reply.getCallId());
    Assert.assertTrue(reply.isSuccess());
    long oldLastApplied = cluster.getLeader().getState().getLastAppliedIndex();
    // trigger the reconfiguration, make sure the original leader is kicked out
    PeerChanges change = cluster.addNewPeers(2, true);
    RaftPeer[] allPeers = cluster.removePeers(2, true, asList(change.newPeers)).allPeersInNewConf;
    // trigger setConfiguration
    cluster.setConfiguration(allPeers);
    RaftTestUtil.waitForLeader(cluster);
    final RaftPeerId newLeaderId = cluster.getLeader().getId();
    Assert.assertNotEquals(leaderId, newLeaderId);
    // same clientId and callId in the request
    r = cluster.newRaftClientRequest(client.getId(), newLeaderId, callId, seqNum, new SimpleMessage("message"));
    for (int i = 0; i < 10; i++) {
        try {
            reply = rpc.sendRequest(r);
            LOG.info("successfully sent out the retry request_" + i);
            Assert.assertEquals(client.getId(), reply.getClientId());
            Assert.assertEquals(callId, reply.getCallId());
            Assert.assertTrue(reply.isSuccess());
        } catch (Exception e) {
            LOG.info("hit exception while retrying the same request: " + e);
        }
        Thread.sleep(100);
    }
    // check the new leader and make sure the retry did not get committed
    Assert.assertEquals(oldLastApplied + 3, cluster.getLeader().getState().getLastAppliedIndex());
    client.close();
}

Example 2 with RaftClientRequest

use of org.apache.ratis.protocol.RaftClientRequest in project incubator-ratis by apache.

the class RetryCacheTests method testBasicRetry.

/**
 * make sure the retry cache can correct capture the retry from a client,
 * and returns the result from the previous request
 */
@Test
public void testBasicRetry() throws Exception {
    final MiniRaftCluster cluster = getCluster();
    RaftTestUtil.waitForLeader(cluster);
    final RaftPeerId leaderId = cluster.getLeaderAndSendFirstMessage().getId();
    long oldLastApplied = cluster.getLeader().getState().getLastAppliedIndex();
    final RaftClient client = cluster.createClient(leaderId);
    final RaftClientRpc rpc = client.getClientRpc();
    final long callId = 999;
    final long seqNum = 111;
    RaftClientRequest r = cluster.newRaftClientRequest(client.getId(), leaderId, callId, seqNum, new SimpleMessage("message"));
    RaftClientReply reply = rpc.sendRequest(r);
    Assert.assertEquals(callId, reply.getCallId());
    Assert.assertTrue(reply.isSuccess());
    // retry with the same callId
    for (int i = 0; i < 5; i++) {
        reply = rpc.sendRequest(r);
        Assert.assertEquals(client.getId(), reply.getClientId());
        Assert.assertEquals(callId, reply.getCallId());
        Assert.assertTrue(reply.isSuccess());
    }
    long leaderApplied = cluster.getLeader().getState().getLastAppliedIndex();
    // make sure retry cache has the entry
    for (RaftServerImpl server : cluster.iterateServerImpls()) {
        LOG.info("check server " + server.getId());
        if (server.getState().getLastAppliedIndex() < leaderApplied) {
            Thread.sleep(1000);
        }
        Assert.assertEquals(2, RaftServerTestUtil.getRetryCacheSize(server));
        Assert.assertNotNull(RaftServerTestUtil.getRetryEntry(server, client.getId(), callId));
        // make sure there is only one log entry committed
        Assert.assertEquals(oldLastApplied + 1, server.getState().getLastAppliedIndex());
    }
    client.close();
}

Example 3 with RaftClientRequest

use of org.apache.ratis.protocol.RaftClientRequest in project alluxio by Alluxio.

the class RaftJournalSystem method sendMessageAsync.

/**
 * Sends a message to a raft server asynchronously.
 *
 * @param server the raft peer id of the target server
 * @param message the message to send
 * @return a future to be completed with the client reply
 */
public synchronized CompletableFuture<RaftClientReply> sendMessageAsync(RaftPeerId server, Message message) {
    RaftClient client = createClient();
    RaftClientRequest request = RaftClientRequest.newBuilder().setClientId(mRawClientId).setServerId(server).setGroupId(RAFT_GROUP_ID).setCallId(nextCallId()).setMessage(message).setType(RaftClientRequest.staleReadRequestType(0)).setSlidingWindowEntry(null).build();
    return client.getClientRpc().sendRequestAsync(request).whenComplete((reply, t) -> {
        try {
            client.close();
        } catch (IOException e) {
            throw new CompletionException(e);
        }
    });
}

Example 4 with RaftClientRequest

use of org.apache.ratis.protocol.RaftClientRequest in project alluxio by Alluxio.

the class RaftJournalAppender method sendLocalRequest.

private CompletableFuture<RaftClientReply> sendLocalRequest(Message message, TimeDuration timeout) throws IOException {
    LOG.trace("Sending local message {}", message);
    // ClientId, ServerId, and GroupId must not be null
    RaftClientRequest request = RaftClientRequest.newBuilder().setClientId(mLocalClientId).setServerId(mServer.getId()).setGroupId(RaftJournalSystem.RAFT_GROUP_ID).setCallId(RaftJournalSystem.nextCallId()).setMessage(message).setType(RaftClientRequest.writeRequestType()).setSlidingWindowEntry(null).build();
    return mServer.submitClientRequestAsync(request);
}