Package io.fathom.auto.zookeeper.model

Examples of io.fathom.auto.zookeeper.model.ClusterState

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        while (!zk.isRunning()) {
            log.info("Checking zookeeper cluster creation state");

            try {
                ClusterState clusterState = cluster.readClusterState();
                if (clusterState != null && clusterState.isCreated()) {
                    log.info("Zookeeper cluster is created");
                    break;
                } else {
                    log.info("Zookeeper cluster state: {}", clusterState);
                }
            } catch (IOException e) {
                log.warn("Error reading cluster state", e);
                TimeSpan.seconds(10).sleep();
                continue;
            }

            try {
                if (cluster.getLock().tryLock(1, TimeUnit.MINUTES)) {
                    // We've got the lock...
                    ClusterSnapshot snapshot = cluster.getSnapshot();

                    ClusterState state = snapshot.getClusterState();
                    if (state == null || !state.isCreated()) {
                        // If we haven't created the data yet, everybody should
                        // be an observer
                        for (ZookeeperClusterRegistration server : snapshot.servers.values()) {
                            if (!server.isObserver()) {
                                // TODO: It may be that the leader crashed
                                // mid-create...
                                throw new IllegalStateException("Found non-observer server in uninitialized cluster");
                            }
                        }

                        registration.type = ZookeeperClusterRegistration.PARTICIPANT;
                        cluster.writeRegistration(myid, registration);

                        snapshot.servers.put(myid, registration);

                        config.writeHosts(snapshot);
                        config.writeConfig(snapshot, myid);

                        zk.start();

                        if (state == null) {
                            state = new ClusterState();
                        }
                        state.createdBy = String.valueOf(myid);

                        cluster.writeClusterState(state);
                    }
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        }
        return JsonCodec.gson.fromJson(json, ClusterState.class);
    }

    public ClusterSnapshot getSnapshot() throws IOException {
        ClusterState state = readClusterState();

        Map<Integer, ZookeeperClusterRegistration> servers = getServers();

        return new ClusterSnapshot(state, servers);
    }
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Related Classes of io.fathom.auto.zookeeper.model.ClusterState

  • io.fathom.auto.zookeeper.ZookeeperCluster
  • io.fathom.auto.zookeeper.ZookeeperInstance
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