Examples with Exhibitors org.apache.curator.ensemble.exhibitor.Exhibitors used on opensource projects

Example 1 with Exhibitors

use of org.apache.curator.ensemble.exhibitor.Exhibitors in project storm by apache.

the class Utils method setupBuilder.

protected static void setupBuilder(CuratorFrameworkFactory.Builder builder, final String zkStr, Map conf, ZookeeperAuthInfo auth) {
    List<String> exhibitorServers = getStrings(conf.get(Config.STORM_EXHIBITOR_SERVERS));
    if (!exhibitorServers.isEmpty()) {
        // use exhibitor servers
        builder.ensembleProvider(new ExhibitorEnsembleProvider(new Exhibitors(exhibitorServers, Utils.getInt(conf.get(Config.STORM_EXHIBITOR_PORT)), new Exhibitors.BackupConnectionStringProvider() {

            @Override
            public String getBackupConnectionString() throws Exception {
                // use zk servers as backup if they exist
                return zkStr;
            }
        }), new DefaultExhibitorRestClient(), Utils.getString(conf.get(Config.STORM_EXHIBITOR_URIPATH)), Utils.getInt(conf.get(Config.STORM_EXHIBITOR_POLL)), new StormBoundedExponentialBackoffRetry(Utils.getInt(conf.get(Config.STORM_EXHIBITOR_RETRY_INTERVAL)), Utils.getInt(conf.get(Config.STORM_EXHIBITOR_RETRY_INTERVAL_CEILING)), Utils.getInt(conf.get(Config.STORM_EXHIBITOR_RETRY_TIMES)))));
    } else {
        builder.connectString(zkStr);
    }
    builder.connectionTimeoutMs(Utils.getInt(conf.get(Config.STORM_ZOOKEEPER_CONNECTION_TIMEOUT))).sessionTimeoutMs(Utils.getInt(conf.get(Config.STORM_ZOOKEEPER_SESSION_TIMEOUT))).retryPolicy(new StormBoundedExponentialBackoffRetry(Utils.getInt(conf.get(Config.STORM_ZOOKEEPER_RETRY_INTERVAL)), Utils.getInt(conf.get(Config.STORM_ZOOKEEPER_RETRY_INTERVAL_CEILING)), Utils.getInt(conf.get(Config.STORM_ZOOKEEPER_RETRY_TIMES))));
    if (auth != null && auth.scheme != null && auth.payload != null) {
        builder.authorization(auth.scheme, auth.payload);
    }
}

Example 2 with Exhibitors

use of org.apache.curator.ensemble.exhibitor.Exhibitors in project druid by druid-io.

the class CuratorModule method makeEnsembleProvider.

@Provides
@LazySingleton
public EnsembleProvider makeEnsembleProvider(CuratorConfig config, ExhibitorConfig exConfig) {
    if (exConfig.getHosts().isEmpty()) {
        return new FixedEnsembleProvider(config.getZkHosts());
    }
    return new ExhibitorEnsembleProvider(new Exhibitors(exConfig.getHosts(), exConfig.getRestPort(), newBackupProvider(config.getZkHosts())), new DefaultExhibitorRestClient(exConfig.getUseSsl()), exConfig.getRestUriPath(), exConfig.getPollingMs(), new BoundedExponentialBackoffRetry(BASE_SLEEP_TIME_MS, MAX_SLEEP_TIME_MS, MAX_RETRIES)) {

        @Override
        public void start() throws Exception {
            log.info("Poll the list of zookeeper servers for initial ensemble");
            this.pollForInitialEnsemble();
            super.start();
        }
    };
}

Example 3 with Exhibitors

use of org.apache.curator.ensemble.exhibitor.Exhibitors in project exhibitor by soabase.

the class ExhibitorCreator method makeCurator.

private CuratorFramework makeCurator(final String connectString, int baseSleepTimeMs, int maxRetries, int exhibitorPort, String exhibitorRestPath, int pollingMs) {
    List<String> hostnames = Lists.newArrayList();
    String[] parts = connectString.split(",");
    for (String spec : parts) {
        String[] subParts = spec.split(":");
        try {
            if (subParts.length != 2) {
                log.error("Bad connection string: " + connectString);
                return null;
            }
        } catch (NumberFormatException e) {
            log.error("Bad connection string: " + connectString);
            return null;
        }
        hostnames.add(subParts[0]);
    }
    ExponentialBackoffRetry retryPolicy = new ExponentialBackoffRetry(baseSleepTimeMs, maxRetries);
    Exhibitors.BackupConnectionStringProvider backupConnectionStringProvider = new Exhibitors.BackupConnectionStringProvider() {

        @Override
        public String getBackupConnectionString() throws Exception {
            return connectString;
        }
    };
    CuratorFrameworkFactory.Builder builder = CuratorFrameworkFactory.builder().connectString(connectString).retryPolicy(retryPolicy);
    if (exhibitorPort > 0) {
        Exhibitors exhibitors = new Exhibitors(hostnames, exhibitorPort, backupConnectionStringProvider);
        ExhibitorEnsembleProvider ensembleProvider = new ExhibitorEnsembleProvider(exhibitors, new DefaultExhibitorRestClient(), exhibitorRestPath + "exhibitor/v1/cluster/list", pollingMs, retryPolicy);
        builder = builder.ensembleProvider(ensembleProvider);
    } else {
        log.warn("Exhibitor on the shared ZooKeeper config ensemble is not being used.");
    }
    return builder.build();
}

Example 4 with Exhibitors

use of org.apache.curator.ensemble.exhibitor.Exhibitors in project chassis by Kixeye.

the class CuratorFrameworkBuilder method withExhibitors.

public CuratorFrameworkBuilder withExhibitors(int port, final String... exhibitors) {
    Preconditions.checkNotNull(exhibitors);
    Preconditions.checkArgument(exhibitors.length > 0);
    Preconditions.checkArgument(port > 0);
    if (this.zookeeperConnectionString != null) {
        BootstrapException.zookeeperExhibitorConflict();
    }
    this.exhibitors = new Exhibitors(Arrays.asList(exhibitors), port, new Exhibitors.BackupConnectionStringProvider() {

        @Override
        public String getBackupConnectionString() throws Exception {
            //no backup zookeeper connection string
            return "";
        }
    });
    return this;
}