Examples with BoundExponentialBackoffRetryPolicy org.apache.bookkeeper.zookeeper.BoundExponentialBackoffRetryPolicy used on opensource projects

Example 1 with BoundExponentialBackoffRetryPolicy

use of org.apache.bookkeeper.zookeeper.BoundExponentialBackoffRetryPolicy in project distributedlog by twitter.

the class BKDistributedLogNamespace method createBKZKClientBuilder.

private static ZooKeeperClientBuilder createBKZKClientBuilder(String zkcName, DistributedLogConfiguration conf, String zkServers, StatsLogger statsLogger) {
    RetryPolicy retryPolicy = null;
    if (conf.getZKNumRetries() > 0) {
        retryPolicy = new BoundExponentialBackoffRetryPolicy(conf.getBKClientZKRetryBackoffStartMillis(), conf.getBKClientZKRetryBackoffMaxMillis(), conf.getBKClientZKNumRetries());
    }
    ZooKeeperClientBuilder builder = ZooKeeperClientBuilder.newBuilder().name(zkcName).sessionTimeoutMs(conf.getBKClientZKSessionTimeoutMilliSeconds()).retryThreadCount(conf.getZKClientNumberRetryThreads()).requestRateLimit(conf.getBKClientZKRequestRateLimit()).zkServers(zkServers).retryPolicy(retryPolicy).statsLogger(statsLogger).zkAclId(conf.getZkAclId());
    LOG.info("Created shared zooKeeper client builder {}: zkServers = {}, numRetries = {}, sessionTimeout = {}, retryBackoff = {}," + " maxRetryBackoff = {}, zkAclId = {}.", new Object[] { zkcName, zkServers, conf.getBKClientZKNumRetries(), conf.getBKClientZKSessionTimeoutMilliSeconds(), conf.getBKClientZKRetryBackoffStartMillis(), conf.getBKClientZKRetryBackoffMaxMillis(), conf.getZkAclId() });
    return builder;
}

Example 2 with BoundExponentialBackoffRetryPolicy

use of org.apache.bookkeeper.zookeeper.BoundExponentialBackoffRetryPolicy in project distributedlog by twitter.

the class DLAuditor method calculateLedgerSpaceUsage.

public long calculateLedgerSpaceUsage(URI uri) throws IOException {
    List<URI> uris = Lists.newArrayList(uri);
    String zkServers = validateAndGetZKServers(uris);
    RetryPolicy retryPolicy = new BoundExponentialBackoffRetryPolicy(conf.getZKRetryBackoffStartMillis(), conf.getZKRetryBackoffMaxMillis(), Integer.MAX_VALUE);
    ZooKeeperClient zkc = ZooKeeperClientBuilder.newBuilder().name("DLAuditor-ZK").zkServers(zkServers).sessionTimeoutMs(conf.getZKSessionTimeoutMilliseconds()).retryPolicy(retryPolicy).zkAclId(conf.getZkAclId()).build();
    ExecutorService executorService = Executors.newCachedThreadPool();
    try {
        BKDLConfig bkdlConfig = resolveBKDLConfig(zkc, uris);
        logger.info("Resolved bookkeeper config : {}", bkdlConfig);
        BookKeeperClient bkc = BookKeeperClientBuilder.newBuilder().name("DLAuditor-BK").dlConfig(conf).zkServers(bkdlConfig.getBkZkServersForWriter()).ledgersPath(bkdlConfig.getBkLedgersPath()).build();
        try {
            return calculateLedgerSpaceUsage(bkc, executorService);
        } finally {
            bkc.close();
        }
    } finally {
        zkc.close();
        executorService.shutdown();
    }
}

Example 3 with BoundExponentialBackoffRetryPolicy

use of org.apache.bookkeeper.zookeeper.BoundExponentialBackoffRetryPolicy in project distributedlog by twitter.

the class DLAuditor method collectLedgers.

public Pair<Set<Long>, Set<Long>> collectLedgers(List<URI> uris, List<List<String>> allocationPaths) throws IOException {
    Preconditions.checkArgument(uris.size() > 0, "No uri provided to audit");
    String zkServers = validateAndGetZKServers(uris);
    RetryPolicy retryPolicy = new BoundExponentialBackoffRetryPolicy(conf.getZKRetryBackoffStartMillis(), conf.getZKRetryBackoffMaxMillis(), Integer.MAX_VALUE);
    ZooKeeperClient zkc = ZooKeeperClientBuilder.newBuilder().name("DLAuditor-ZK").zkServers(zkServers).sessionTimeoutMs(conf.getZKSessionTimeoutMilliseconds()).retryPolicy(retryPolicy).zkAclId(conf.getZkAclId()).build();
    ExecutorService executorService = Executors.newCachedThreadPool();
    try {
        BKDLConfig bkdlConfig = resolveBKDLConfig(zkc, uris);
        logger.info("Resolved bookkeeper config : {}", bkdlConfig);
        BookKeeperClient bkc = BookKeeperClientBuilder.newBuilder().name("DLAuditor-BK").dlConfig(conf).zkServers(bkdlConfig.getBkZkServersForWriter()).ledgersPath(bkdlConfig.getBkLedgersPath()).build();
        try {
            Set<Long> bkLedgers = collectLedgersFromBK(bkc, executorService);
            Set<Long> dlLedgers = collectLedgersFromDL(uris, allocationPaths);
            return Pair.of(bkLedgers, dlLedgers);
        } finally {
            bkc.close();
        }
    } finally {
        zkc.close();
        executorService.shutdown();
    }
}

Example 4 with BoundExponentialBackoffRetryPolicy

use of org.apache.bookkeeper.zookeeper.BoundExponentialBackoffRetryPolicy in project distributedlog by twitter.

the class ZooKeeperClient method buildZooKeeper.

private ZooKeeper buildZooKeeper() throws ZooKeeperConnectionException, InterruptedException {
    Watcher watcher = new Watcher() {

        @Override
        public void process(WatchedEvent event) {
            switch(event.getType()) {
                case None:
                    switch(event.getState()) {
                        case Expired:
                            if (null == retryPolicy) {
                                LOG.info("ZooKeeper {}' session expired. Event: {}", name, event);
                                closeInternal();
                            }
                            authenticated = false;
                            break;
                        case Disconnected:
                            if (null == retryPolicy) {
                                LOG.info("ZooKeeper {} is disconnected from zookeeper now," + " but it is OK unless we received EXPIRED event.", name);
                            }
                            // Mark as not authenticated if expired or disconnected. In both cases
                            // we lose any attached auth info. Relying on Expired/Disconnected is
                            // sufficient since all Expired/Disconnected events are processed before
                            // all SyncConnected events, and the underlying member is not updated until
                            // SyncConnected is received.
                            authenticated = false;
                            break;
                        default:
                            break;
                    }
            }
            try {
                for (Watcher watcher : watchers) {
                    try {
                        watcher.process(event);
                    } catch (Throwable t) {
                        LOG.warn("Encountered unexpected exception from watcher {} : ", watcher, t);
                    }
                }
            } catch (Throwable t) {
                LOG.warn("Encountered unexpected exception when firing watched event {} : ", event, t);
            }
        }
    };
    Set<Watcher> watchers = new HashSet<Watcher>();
    watchers.add(watcher);
    ZooKeeper zk;
    try {
        RetryPolicy opRetryPolicy = null == retryPolicy ? new BoundExponentialBackoffRetryPolicy(sessionTimeoutMs, sessionTimeoutMs, 0) : retryPolicy;
        RetryPolicy connectRetryPolicy = null == retryPolicy ? new BoundExponentialBackoffRetryPolicy(sessionTimeoutMs, sessionTimeoutMs, 0) : new BoundExponentialBackoffRetryPolicy(sessionTimeoutMs, sessionTimeoutMs, Integer.MAX_VALUE);
        zk = org.apache.bookkeeper.zookeeper.ZooKeeperClient.newBuilder().connectString(zooKeeperServers).sessionTimeoutMs(sessionTimeoutMs).watchers(watchers).operationRetryPolicy(opRetryPolicy).connectRetryPolicy(connectRetryPolicy).statsLogger(statsLogger).retryThreadCount(retryThreadCount).requestRateLimit(requestRateLimit).build();
    } catch (KeeperException e) {
        throw new ZooKeeperConnectionException("Problem connecting to servers: " + zooKeeperServers, e);
    } catch (IOException e) {
        throw new ZooKeeperConnectionException("Problem connecting to servers: " + zooKeeperServers, e);
    }
    return zk;
}

Example 5 with BoundExponentialBackoffRetryPolicy

use of org.apache.bookkeeper.zookeeper.BoundExponentialBackoffRetryPolicy in project distributedlog by twitter.

the class BookKeeperClient method initialize.

private synchronized void initialize() throws IOException {
    if (null != this.bkc) {
        return;
    }
    boolean registerExpirationHandler;
    if (null == this.zkc) {
        int zkSessionTimeout = conf.getBKClientZKSessionTimeoutMilliSeconds();
        RetryPolicy retryPolicy = null;
        if (conf.getBKClientZKNumRetries() > 0) {
            retryPolicy = new BoundExponentialBackoffRetryPolicy(conf.getBKClientZKRetryBackoffStartMillis(), conf.getBKClientZKRetryBackoffMaxMillis(), conf.getBKClientZKNumRetries());
        }
        Credentials credentials = Credentials.NONE;
        if (conf.getZkAclId() != null) {
            credentials = new DigestCredentials(conf.getZkAclId(), conf.getZkAclId());
        }
        this.zkc = new ZooKeeperClient(name + ":zk", zkSessionTimeout, 2 * zkSessionTimeout, zkServers, retryPolicy, statsLogger.scope("bkc_zkc"), conf.getZKClientNumberRetryThreads(), conf.getBKClientZKRequestRateLimit(), credentials);
    }
    registerExpirationHandler = conf.getBKClientZKNumRetries() <= 0;
    try {
        commonInitialization(conf, ledgersPath, channelFactory, statsLogger, requestTimer, registerExpirationHandler);
    } catch (InterruptedException e) {
        throw new DLInterruptedException("Interrupted on creating bookkeeper client " + name + " : ", e);
    } catch (KeeperException e) {
        throw new ZKException("Error on creating bookkeeper client " + name + " : ", e);
    }
    if (ownZK) {
        LOG.info("BookKeeper Client created {} with its own ZK Client : ledgersPath = {}, numRetries = {}, " + "sessionTimeout = {}, backoff = {}, maxBackoff = {}, dnsResolver = {}, registerExpirationHandler = {}", new Object[] { name, ledgersPath, conf.getBKClientZKNumRetries(), conf.getBKClientZKSessionTimeoutMilliSeconds(), conf.getBKClientZKRetryBackoffStartMillis(), conf.getBKClientZKRetryBackoffMaxMillis(), conf.getBkDNSResolverOverrides(), registerExpirationHandler });
    } else {
        LOG.info("BookKeeper Client created {} with shared zookeeper client : ledgersPath = {}, numRetries = {}, " + "sessionTimeout = {}, backoff = {}, maxBackoff = {}, dnsResolver = {}, registerExpirationHandler = {}", new Object[] { name, ledgersPath, conf.getZKNumRetries(), conf.getZKSessionTimeoutMilliseconds(), conf.getZKRetryBackoffStartMillis(), conf.getZKRetryBackoffMaxMillis(), conf.getBkDNSResolverOverrides(), registerExpirationHandler });
    }
}