Examples with QuorumServer org.apache.zookeeper.server.quorum.QuorumPeer.QuorumServer used on opensource projects

Example 11 with QuorumServer

use of org.apache.zookeeper.server.quorum.QuorumPeer.QuorumServer in project zookeeper by apache.

the class ReconfigTest method testUnspecifiedClientAddress.

@Test
public void testUnspecifiedClientAddress() throws Exception {
    int[] ports = new int[3];
    for (int port : ports) {
        port = PortAssignment.unique();
    }
    String server = "server.0=localhost:" + ports[0] + ":" + ports[1] + ";" + ports[2];
    QuorumServer qs = new QuorumServer(0, server);
    Assert.assertEquals(qs.clientAddr.getHostString(), "0.0.0.0");
    Assert.assertEquals(qs.clientAddr.getPort(), ports[2]);
}

Example 12 with QuorumServer

use of org.apache.zookeeper.server.quorum.QuorumPeer.QuorumServer in project rest.li by linkedin.

the class ZKQuorum method createNewPeerData.

private void createNewPeerData(int id) {
    int clientPort = ZKTestUtil.getRandomPort();
    int quorumPort = ZKTestUtil.getRandomPort() + 1000;
    int electionPort = ZKTestUtil.getRandomPort() + 1001;
    ZKPeer zkpeer = new ZKPeer(id, ZKTestUtil.createTempDir("zkdata" + id), ZKTestUtil.createTempDir("zklog" + id), HOST, clientPort, quorumPort, electionPort);
    _peers.put(id, zkpeer);
    _peersView.put(Long.valueOf(id), new QuorumServer(id, new InetSocketAddress(HOST, quorumPort), new InetSocketAddress(HOST, electionPort), LearnerType.PARTICIPANT));
    _log.info("Created peer #" + id + " with ports:" + clientPort + "/" + quorumPort + "/" + electionPort + "  peer server addr:" + _peersView.get(Long.valueOf(id)).addr + "  peer server electionAddr:" + _peersView.get(Long.valueOf(id)).electionAddr);
}

Example 13 with QuorumServer

use of org.apache.zookeeper.server.quorum.QuorumPeer.QuorumServer in project zookeeper by apache.

the class Follower method followLeader.

/**
 * the main method called by the follower to follow the leader
 *
 * @throws InterruptedException
 */
void followLeader() throws InterruptedException {
    self.end_fle = Time.currentElapsedTime();
    long electionTimeTaken = self.end_fle - self.start_fle;
    self.setElectionTimeTaken(electionTimeTaken);
    LOG.info("FOLLOWING - LEADER ELECTION TOOK - {} {}", electionTimeTaken, QuorumPeer.FLE_TIME_UNIT);
    self.start_fle = 0;
    self.end_fle = 0;
    fzk.registerJMX(new FollowerBean(this, zk), self.jmxLocalPeerBean);
    try {
        QuorumServer leaderServer = findLeader();
        try {
            connectToLeader(leaderServer.addr, leaderServer.hostname);
            long newEpochZxid = registerWithLeader(Leader.FOLLOWERINFO);
            if (self.isReconfigStateChange())
                throw new Exception("learned about role change");
            // check to see if the leader zxid is lower than ours
            // this should never happen but is just a safety check
            long newEpoch = ZxidUtils.getEpochFromZxid(newEpochZxid);
            if (newEpoch < self.getAcceptedEpoch()) {
                LOG.error("Proposed leader epoch " + ZxidUtils.zxidToString(newEpochZxid) + " is less than our accepted epoch " + ZxidUtils.zxidToString(self.getAcceptedEpoch()));
                throw new IOException("Error: Epoch of leader is lower");
            }
            syncWithLeader(newEpochZxid);
            QuorumPacket qp = new QuorumPacket();
            while (this.isRunning()) {
                readPacket(qp);
                processPacket(qp);
            }
        } catch (Exception e) {
            LOG.warn("Exception when following the leader", e);
            try {
                sock.close();
            } catch (IOException e1) {
                e1.printStackTrace();
            }
            // clear pending revalidations
            pendingRevalidations.clear();
        }
    } finally {
        zk.unregisterJMX((Learner) this);
    }
}

Example 14 with QuorumServer

use of org.apache.zookeeper.server.quorum.QuorumPeer.QuorumServer in project zookeeper by apache.

the class Learner method findLeader.

/**
 * Returns the address of the node we think is the leader.
 */
protected QuorumServer findLeader() {
    QuorumServer leaderServer = null;
    // Find the leader by id
    Vote current = self.getCurrentVote();
    for (QuorumServer s : self.getView().values()) {
        if (s.id == current.getId()) {
            leaderServer = s;
            break;
        }
    }
    if (leaderServer == null) {
        LOG.warn("Couldn't find the leader with id = " + current.getId());
    }
    return leaderServer;
}

Example 15 with QuorumServer

use of org.apache.zookeeper.server.quorum.QuorumPeer.QuorumServer in project zookeeper by apache.

the class QuorumHierarchical method parse.

/**
 * Parse properties if configuration given in a separate file.
 * Assumes that allMembers has been already assigned
 * @throws ConfigException
 */
private void parse(Properties quorumProp) throws ConfigException {
    for (Entry<Object, Object> entry : quorumProp.entrySet()) {
        String key = entry.getKey().toString();
        String value = entry.getValue().toString();
        if (key.startsWith("server.")) {
            int dot = key.indexOf('.');
            long sid = Long.parseLong(key.substring(dot + 1));
            QuorumServer qs = new QuorumServer(sid, value);
            allMembers.put(Long.valueOf(sid), qs);
            if (qs.type == LearnerType.PARTICIPANT)
                participatingMembers.put(Long.valueOf(sid), qs);
            else {
                observingMembers.put(Long.valueOf(sid), qs);
            }
        } else if (key.startsWith("group")) {
            int dot = key.indexOf('.');
            long gid = Long.parseLong(key.substring(dot + 1));
            numGroups++;
            String[] parts = value.split(":");
            for (String s : parts) {
                long sid = Long.parseLong(s);
                if (serverGroup.containsKey(sid))
                    throw new ConfigException("Server " + sid + "is in multiple groups");
                else
                    serverGroup.put(sid, gid);
            }
        } else if (key.startsWith("weight")) {
            int dot = key.indexOf('.');
            long sid = Long.parseLong(key.substring(dot + 1));
            serverWeight.put(sid, Long.parseLong(value));
        } else if (key.equals("version")) {
            version = Long.parseLong(value, 16);
        }
    }
    for (QuorumServer qs : allMembers.values()) {
        Long id = qs.id;
        if (qs.type == LearnerType.PARTICIPANT) {
            if (!serverGroup.containsKey(id))
                throw new ConfigException("Server " + id + "is not in a group");
            if (!serverWeight.containsKey(id))
                serverWeight.put(id, (long) 1);
        }
    }
    computeGroupWeight();
}