org.apache.curator.retry.BoundedExponentialBackoffRetry Java Examples

public static void init() {
    try {
        curatorClient = CuratorFrameworkFactory
                .builder()
                .connectString(zkConfig.getZkAddrs())
                .sessionTimeoutMs(zkConfig.getZkSessionTimeoutMs())
                .retryPolicy(new BoundedExponentialBackoffRetry(zkConfig.getBaseSleepTimeMs(), zkConfig.getMaxSleepMs(), zkConfig.getMaxRetries()))
                .build();

        if (curatorClient.getState() == CuratorFrameworkState.LATENT) {
            curatorClient.start();
        }

        ZooKeeperConfigurationSource zkConfigSource = new ZooKeeperConfigurationSource(curatorClient, Constants.META_BASE_ZK_PATH);
        zkConfigSource.start();
        DynamicWatchedConfiguration zkDynamicConfig = new DynamicWatchedConfiguration(zkConfigSource);
        ConfigurationManager.install(zkDynamicConfig);
    } catch (Exception e) {
        LOGGER.error("ZkUtils getCuratorClient err:{}", e.getMessage(), e);
    }
}
 

public static void init() {
    try {
        curatorClient = CuratorFrameworkFactory
                .builder()
                .connectString(zkConfig.getZkAddrs())
                .sessionTimeoutMs(zkConfig.getZkSessionTimeoutMs())
                .retryPolicy(new BoundedExponentialBackoffRetry(zkConfig.getBaseSleepTimeMs(), zkConfig.getMaxSleepMs(), zkConfig.getMaxRetries()))
                .build();

        if (curatorClient.getState() == CuratorFrameworkState.LATENT) {
            curatorClient.start();
        }

        ZooKeeperConfigurationSource zkConfigSource = new ZooKeeperConfigurationSource(curatorClient, Constants.META_BASE_ZK_PATH);
        zkConfigSource.start();
        DynamicWatchedConfiguration zkDynamicConfig = new DynamicWatchedConfiguration(zkConfigSource);
        ConfigurationManager.install(zkDynamicConfig);
    } catch (Exception e) {
        LOGGER.error("ZkUtils getCuratorClient err:{}", e.getMessage(), e);
    }
}
 

@Before
public void init() throws Throwable {
    zkRootClient = CuratorFrameworkFactory.builder()
            .connectString(server.getConnectString())
            .retryPolicy(new BoundedExponentialBackoffRetry(10, 100, 7))
            .build();
    zkRootClient.start();

    ZooKeeper zk = zkRootClient.getZookeeperClient().getZooKeeper();
    ZKPaths.mkdirs(zk, "/"+ CloudConfigCommon.CONFIG_ROOT);
    ZKPaths.mkdirs(zk, "/"+CloudConfigCommon.PROPERTY_ROOT);

    zkConfigClient = zkRootClient.usingNamespace(CloudConfigCommon.CONFIG_ROOT);
    zkPropsClient  = zkRootClient.usingNamespace(CloudConfigCommon.PROPERTY_ROOT);

    prepare();
}
 

/**
 * Constructs a new {@link SharedCacheCoordinator}
 * 
 * @param namespace
 *            the Zookeeper namespace to use for grouping all entries created by this coordinator
 * @param zookeeperConnectionString
 *            the Zookeeper connection to use
 */
@Inject
public SharedCacheCoordinator(@ConfigProperty(name = "dw.cache.coordinator.namespace") String namespace,
                @ConfigProperty(name = "dw.warehouse.zookeepers") String zookeeperConnectionString, @ConfigProperty(
                                name = "dw.cacheCoordinator.evictionReaperIntervalSeconds", defaultValue = "30") int evictionReaperIntervalInSeconds,
                @ConfigProperty(name = "dw.cacheCoordinator.numLocks", defaultValue = "300") int numLocks, @ConfigProperty(
                                name = "dw.cacheCoordinator.maxRetries", defaultValue = "10") int maxRetries) {
    ArgumentChecker.notNull(namespace, zookeeperConnectionString);
    
    locks = new HashMap<>();
    localCounters = new HashMap<>();
    localBooleans = new HashMap<>();
    
    localTriStates = new HashMap<>();
    
    sharedCounters = new HashMap<>();
    sharedCountListeners = new HashMap<>();
    sharedBooleans = new HashMap<>();
    sharedBooleanListeners = new HashMap<>();
    
    sharedTriStates = new HashMap<>();
    sharedTriStateListeners = new HashMap<>();
    
    this.numLocks = numLocks;
    this.evictionReaperIntervalInSeconds = evictionReaperIntervalInSeconds;
    this.maxRetries = maxRetries;
    
    curatorClient = CuratorFrameworkFactory.builder().namespace(namespace).retryPolicy(new BoundedExponentialBackoffRetry(100, 5000, 10))
                    .connectString(zookeeperConnectionString).build();
    
    evictionReaper = new Timer("cache-eviction-reaper-" + namespace, true);
}
 

@Test
public void testDeserializeBoundedExponentialBackoffRetry() {
    ZooKeeperConfiguration config = parse(ImmutableMap.of("retryPolicy",
            ImmutableMap.builder()
                    .put("type", "boundedExponentialBackoff")
                    .put("baseSleepTimeMs", 50)
                    .put("maxSleepTimeMs", 500)
                    .put("maxRetries", 3)
                    .build()));
    assertTrue(config.getRetryPolicy().get() instanceof BoundedExponentialBackoffRetry);
}
 

@Override
RetryPolicy build(Config config) {
  return new BoundedExponentialBackoffRetry(
      getMillis(config, "baseSleepDuration"),
      getMillis(config, "maxSleepDuration"),
      config.getInt("maxRetries"));
}
 

private static void prepare(TestingServer server) throws Exception {
        CuratorFramework zkRootClient = null;
        try {
            zkRootClient = CuratorFrameworkFactory.builder()
                    .connectString(server.getConnectString())
                    .retryPolicy(new BoundedExponentialBackoffRetry(10, 100, 7))
                    .build();
            zkRootClient.start();

            ZooKeeper zk = zkRootClient.getZookeeperClient().getZooKeeper();
            ZKPaths.mkdirs(zk, "/" + CloudConfigCommon.CONFIG_ROOT);
            ZKPaths.mkdirs(zk, "/"+CloudConfigCommon.PROPERTY_ROOT);

            CuratorFramework zkConfigClient = zkRootClient.usingNamespace(CloudConfigCommon.CONFIG_ROOT);
//        CuratorFramework zkPropsClient  = zkRootClient.usingNamespace(CloudConfigCommon.PROPERTY_ROOT);

            String config = "{\n" +
                    "    \"driverClassName\" : \"com.mysql.jdbc.Driver\",\n" +
                    "    \"userName\" : \"root\",\n" +
                    "    \"password\" : \"1111\", \n"+
                    "    \"jdbcUrl\" : \"jdbc:mysql://127.0.0.1:3306/a?characterEncoding=utf8&createDatabaseIfNotExist=true\"\n"+
                    "}";

            zkConfigClient.create().creatingParentsIfNeeded().forPath("/database/mydb", config.getBytes());
        } finally {
            if(zkRootClient!=null) {
                zkRootClient.close();
            }
        }
    }
 

public ZkRegistry(ZkConfig zkConfig) {

        zkClient = CuratorFrameworkFactory.builder().connectString(zkConfig.getZkAddress())
                .sessionTimeoutMs(zkConfig.getZkTimeout())
                .retryPolicy(new BoundedExponentialBackoffRetry(zkConfig.getBaseSleepTimeMs(),
                        zkConfig.getMaxSleepTimeMs(), zkConfig.getMaxRetries()))
                .build();

        zkClient.start();
    }
 

@BeforeMethod
private void setup() throws Exception {
    _zooKeeperServer = new TestingServer();
    _curator = CuratorFrameworkFactory.newClient(_zooKeeperServer.getConnectString(),
            new BoundedExponentialBackoffRetry(100, 1000, 5));
    _curator.start();
}
 

public void init(Map<String, Object> conf, String participantId) {
    Preconditions.checkNotNull(participantId, "participantId can not be null");
    Preconditions.checkNotNull(conf, "conf can not be null");

    this.conf = conf;
    this.serverUrl = participantId;
    this.leaderLatchListener = createLeaderLatchListener();

    LOG.info("Received configuration : [{}]", conf);

    CuratorFrameworkFactory.Builder builder = CuratorFrameworkFactory.builder();
    String url = (String) conf.get(CONNECT_URL);
    String rootPrefix = (String) conf.get("root");
    builder.connectString(url);
    builder.connectionTimeoutMs((Integer) conf.getOrDefault(CONNECTION_TIMEOUT_MS, DEFAULT_CONN_TIMOUT));
    builder.sessionTimeoutMs((Integer) conf.getOrDefault(SESSION_TIMEOUT_MS, DEFAULT_SESSION_TIMEOUT));

    builder.retryPolicy(
            new BoundedExponentialBackoffRetry(
                    (Integer) conf.getOrDefault(RETRY_BASE_SLEEP_TIME_MS, DEFAULT_BASE_SLEEP_TIME),
                    (Integer) conf.getOrDefault(RETRY_MAX_SLEEP_TIME_MS, DEFAULT_MAX_SLEEP_TIME),
                    (Integer) conf.getOrDefault(RETRY_LIMIT, DEFAULT_RETRY_LIMIT)

            ));

    curatorFramework = builder.build();
    leaderLatchPath = rootPrefix + LEADER_LOCK_NODE_PATH;
    leaderLatchRef = new AtomicReference<>(createLeaderLatch());
    curatorFramework.start();
}
 

@Bean
public RetryPolicy retryPolicy() {
    int baseSleepTimeMs = Integer.parseInt(env.getProperty(
            "rpc.client.zookeeper.base.sleep.time.ms", "1000"));
    int maxSleepTimeMs = Integer.parseInt(env.getProperty(
            "rpc.client.zookeeper.max.sleep.time.ms", "5000"));
    int maxRetries = Integer.parseInt(env.getProperty(
            "rpc.client.zookeeper.max.retries", "29"));
    return new BoundedExponentialBackoffRetry(baseSleepTimeMs,
            maxSleepTimeMs, maxRetries);
}
 

public RetryPolicy retryPolicy() {
	int baseSleepTimeMs = Integer.parseInt(env.getProperty(
			"rpc.server.zookeeper.base.sleep.time.ms", "1000"));
	int maxSleepTimeMs = Integer.parseInt(env.getProperty(
			"rpc.server.zookeeper.max.sleep.time.ms", "5000"));
	int maxRetries = Integer.parseInt(env.getProperty(
			"rpc.server.zookeeper.max.retries", "29"));
	return new BoundedExponentialBackoffRetry(baseSleepTimeMs,
			maxSleepTimeMs, maxRetries);
}
 

public RetryPolicy retryPolicy() {
    /**
     * int baseSleepTimeMs, int maxSleepTimeMs, int maxRetries
     **/
    int baseSleepTimeMs = Integer.parseInt(env.getProperty(
            "rpc.client.zookeeper.base.sleep.time.ms", "1000"));
    int maxSleepTimeMs = Integer.parseInt(env.getProperty(
            "rpc.client.zookeeper.max.sleep.time.ms", "5000"));
    int maxRetries = Integer.parseInt(env.getProperty(
            "rpc.client.zookeeper.max.retries", "29"));
    return new BoundedExponentialBackoffRetry(baseSleepTimeMs,
            maxSleepTimeMs, maxRetries);
}
 

/**
 * 初始化一个Curator
 * @param zkConnetcionStrings
 * @return
 */
private static CuratorFramework createCurator(String zkConnetcionStrings) {
    FixedEnsembleProvider ensembleProvider = new FixedEnsembleProvider(zkConnetcionStrings);
    int sessionTimeout = 60000;
    int connectionTimeout = 15000;
    int retryTimes = 5;
    int retryInterval = 1000;
    int retryCeiling = 60000;
    CuratorFrameworkFactory.Builder builder = CuratorFrameworkFactory.builder();
    RetryPolicy retryPolicy = new BoundedExponentialBackoffRetry(retryInterval, retryCeiling, retryTimes);
    builder.ensembleProvider(ensembleProvider).connectionTimeoutMs(connectionTimeout).sessionTimeoutMs(sessionTimeout).retryPolicy(retryPolicy);
    CuratorFramework framework = builder.build();
    return framework;
}
 

@Test
public void testEmbeddedModeCollectorZK() throws Exception {


  BoundedExponentialBackoffRetry retryPolicyMock = PowerMock.createMock(BoundedExponentialBackoffRetry.class);
  expectNew(BoundedExponentialBackoffRetry.class, 1000, 10000, 1).andReturn(retryPolicyMock);

  CuratorZookeeperClient clientMock = PowerMock.createMock(CuratorZookeeperClient.class);
  expectNew(CuratorZookeeperClient.class, "zkQ", 10000, 2000, null, retryPolicyMock)
    .andReturn(clientMock);

  clientMock.start();
  expectLastCall().once();

  clientMock.close();
  expectLastCall().once();

  ZooKeeper zkMock = PowerMock.createMock(ZooKeeper.class);
  expect(clientMock.getZooKeeper()).andReturn(zkMock).once();

  expect(zkMock.exists("/ambari-metrics-cluster", false)).andReturn(null).once();

  replayAll();
  MetricCollectorHAHelper metricCollectorHAHelper = new MetricCollectorHAHelper("zkQ", 1, 1000);
  Collection<String> liveInstances = metricCollectorHAHelper.findLiveCollectorHostsFromZNode();
  verifyAll();
  Assert.assertTrue(liveInstances.isEmpty());
}
 

@Before
public void setUp() throws Exception {
    InstanceSpec spec = new InstanceSpec(null, -1, -1, -1, true, -1);
    testingZooKeeperServer = new TestingZooKeeperServer(new QuorumConfigBuilder(spec));
    testingZooKeeperServer.start();
    
    cacheCoordinator = new SharedCacheCoordinator("CredentialsCacheBeanTest", spec.getConnectString(), 30, 300, 10);
    
    curatorClient = CuratorFrameworkFactory.builder().namespace("CredentialsCacheBeanTest").retryPolicy(new BoundedExponentialBackoffRetry(100, 200, 3))
                    .connectionTimeoutMs(200).sessionTimeoutMs(100).connectString(spec.getConnectString()).build();
    Whitebox.setInternalState(cacheCoordinator, CuratorFramework.class, curatorClient);
    
    cacheCoordinator.start();
}
 

/**
 * Create a new curator instance off the root path; using configuration
 * options provided in the service configuration to set timeouts and
 * retry policy.
 * @return the newly created creator
 */
private CuratorFramework createCurator() throws IOException {
  Configuration conf = getConfig();
  createEnsembleProvider();
  int sessionTimeout = conf.getInt(KEY_REGISTRY_ZK_SESSION_TIMEOUT,
      DEFAULT_ZK_SESSION_TIMEOUT);
  int connectionTimeout = conf.getInt(KEY_REGISTRY_ZK_CONNECTION_TIMEOUT,
      DEFAULT_ZK_CONNECTION_TIMEOUT);
  int retryTimes = conf.getInt(KEY_REGISTRY_ZK_RETRY_TIMES,
      DEFAULT_ZK_RETRY_TIMES);
  int retryInterval = conf.getInt(KEY_REGISTRY_ZK_RETRY_INTERVAL,
      DEFAULT_ZK_RETRY_INTERVAL);
  int retryCeiling = conf.getInt(KEY_REGISTRY_ZK_RETRY_CEILING,
      DEFAULT_ZK_RETRY_CEILING);

  if (LOG.isDebugEnabled()) {
    LOG.debug("Creating CuratorService with connection {}",
        connectionDescription);
  }
  CuratorFramework framework;

  synchronized (CuratorService.class) {
    // set the security options

    // build up the curator itself
    CuratorFrameworkFactory.Builder builder = CuratorFrameworkFactory.builder();
    builder.ensembleProvider(ensembleProvider)
     .connectionTimeoutMs(connectionTimeout)
     .sessionTimeoutMs(sessionTimeout)

     .retryPolicy(new BoundedExponentialBackoffRetry(retryInterval,
         retryCeiling,
         retryTimes));

    // set up the builder AND any JVM context
    registrySecurity.applySecurityEnvironment(builder);
    //log them
    securityConnectionDiagnostics = buildSecurityDiagnostics();
    framework = builder.build();
    framework.start();
  }

  return framework;
}
 

/**
 * Create a new curator instance off the root path; using configuration
 * options provided in the service configuration to set timeouts and
 * retry policy.
 * @return the newly created creator
 */
private CuratorFramework createCurator() throws IOException {
  Configuration conf = getConfig();
  createEnsembleProvider();
  int sessionTimeout = conf.getInt(KEY_REGISTRY_ZK_SESSION_TIMEOUT,
      DEFAULT_ZK_SESSION_TIMEOUT);
  int connectionTimeout = conf.getInt(KEY_REGISTRY_ZK_CONNECTION_TIMEOUT,
      DEFAULT_ZK_CONNECTION_TIMEOUT);
  int retryTimes = conf.getInt(KEY_REGISTRY_ZK_RETRY_TIMES,
      DEFAULT_ZK_RETRY_TIMES);
  int retryInterval = conf.getInt(KEY_REGISTRY_ZK_RETRY_INTERVAL,
      DEFAULT_ZK_RETRY_INTERVAL);
  int retryCeiling = conf.getInt(KEY_REGISTRY_ZK_RETRY_CEILING,
      DEFAULT_ZK_RETRY_CEILING);

  if (LOG.isDebugEnabled()) {
    LOG.debug("Creating CuratorService with connection {}",
        connectionDescription);
  }
  CuratorFramework framework;

  synchronized (CuratorService.class) {
    // set the security options

    // build up the curator itself
    CuratorFrameworkFactory.Builder builder = CuratorFrameworkFactory.builder();
    builder.ensembleProvider(ensembleProvider)
     .connectionTimeoutMs(connectionTimeout)
     .sessionTimeoutMs(sessionTimeout)

     .retryPolicy(new BoundedExponentialBackoffRetry(retryInterval,
         retryCeiling,
         retryTimes));

    // set up the builder AND any JVM context
    registrySecurity.applySecurityEnvironment(builder);
    //log them
    securityConnectionDiagnostics = buildSecurityDiagnostics();
    framework = builder.build();
    framework.start();
  }

  return framework;
}
 

@BeforeClass
public void setup() throws Exception {
    _lifeCycle = new SimpleLifeCycleRegistry();
    _healthChecks = mock(HealthCheckRegistry.class);

    // Start test instance of ZooKeeper in the current JVM
    TestingServer testingServer = new TestingServer();
    _lifeCycle.manage(testingServer);

    // Connect to ZooKeeper
    RetryPolicy retry = new BoundedExponentialBackoffRetry(100, 1000, 5);
    final CuratorFramework curator = CuratorFrameworkFactory.newClient(testingServer.getConnectString(), retry);
    _lifeCycle.manage(curator).start();

    Injector injector = Guice.createInjector(new AbstractModule() {
        @Override
        protected void configure() {
            bind(LifeCycleRegistry.class).toInstance(_lifeCycle);
            bind(HealthCheckRegistry.class).toInstance(_healthChecks);
            bind(TaskRegistry.class).toInstance(mock(TaskRegistry.class));

            bind(BlobStoreConfiguration.class).toInstance(new BlobStoreConfiguration()
                    .setValidTablePlacements(ImmutableSet.of(TABLE_PLACEMENT))
                    .setCassandraClusters(ImmutableMap.of(
                            "media_global", new TestCassandraConfiguration("media_global", "ugc_blob"))));

            DataStoreConfiguration dataStoreConfiguration = new DataStoreConfiguration()
                    .setValidTablePlacements(ImmutableSet.of("app_global:sys", "ugc_global:ugc"))
                    .setCassandraClusters(ImmutableMap.of(
                            "ugc_global", new TestCassandraConfiguration("ugc_global", "ugc_delta_v2"),
                            "app_global", new TestCassandraConfiguration("app_global", "sys_delta_v2")))
                    .setHistoryTtl(Duration.ofDays(2));

            bind(DataStoreConfiguration.class).toInstance(dataStoreConfiguration);

            bind(String.class).annotatedWith(SystemTablePlacement.class).toInstance("app_global:sys");

            bind(DataStore.class).annotatedWith(SystemDataStore.class).toInstance(mock(DataStore.class));
            bind(BlobStore.class).annotatedWith(SystemBlobStore.class).toInstance(mock(BlobStore.class));
            bind(JobService.class).toInstance(mock(JobService.class));
            bind(JobHandlerRegistry.class).toInstance(mock(JobHandlerRegistry.class));

            bind(DataCenterConfiguration.class).toInstance(new DataCenterConfiguration()
                    .setCurrentDataCenter("datacenter1")
                    .setSystemDataCenter("datacenter1")
                    .setDataCenterServiceUri(URI.create("http://localhost:8080"))
                    .setDataCenterAdminUri(URI.create("http://localhost:8080")));

            bind(CqlDriverConfiguration.class).toInstance(new CqlDriverConfiguration());

            bind(String.class).annotatedWith(ServerCluster.class).toInstance("local_default");
            bind(String.class).annotatedWith(InvalidationService.class).toInstance("emodb-cachemgr");

            bind(CuratorFramework.class).annotatedWith(Global.class).toInstance(curator);
            bind(CuratorFramework.class).annotatedWith(BlobStoreZooKeeper.class)
                    .toInstance(ZKNamespaces.usingChildNamespace(curator, "applications/emodb-blob"));
            bind(CuratorFramework.class).annotatedWith(DataStoreZooKeeper.class)
                    .toInstance(ZKNamespaces.usingChildNamespace(curator, "applications/emodb-sor"));
            bind(CuratorFramework.class).annotatedWith(GlobalFullConsistencyZooKeeper.class)
                    .toInstance(ZKNamespaces.usingChildNamespace(curator, "applications/emodb-fct"));

            bind(new TypeLiteral<Supplier<Boolean>>(){}).annotatedWith(CqlForScans.class)
                    .toInstance(Suppliers.ofInstance(true));
            bind(new TypeLiteral<Supplier<Boolean>>(){}).annotatedWith(CqlForMultiGets.class)
                    .toInstance(Suppliers.ofInstance(true));

            bind(ServerFactory.class).toInstance(new SimpleServerFactory());

            bind(ServiceRegistry.class).toInstance(mock(ServiceRegistry.class));

            bind(Clock.class).toInstance(Clock.systemDefaultZone());

            bind(String.class).annotatedWith(CompControlApiKey.class).toInstance("CompControlApiKey");
            bind(CompactionControlSource.class).annotatedWith(LocalCompactionControl.class).toInstance(mock(CompactionControlSource.class));

            bind(Environment.class).toInstance(mock(Environment.class));

            EmoServiceMode serviceMode = EmoServiceMode.STANDARD_ALL;
            install(new SelfHostAndPortModule());
            install(new DataCenterModule(serviceMode));
            install(new CacheManagerModule());
            install(new DataStoreModule(serviceMode));
            install(new BlobStoreModule(serviceMode, "bv.emodb.blob", new MetricRegistry()));
        }
    });
    _store = injector.getInstance(BlobStore.class);

    _lifeCycle.start();
    TableOptions options = new TableOptionsBuilder().setPlacement(TABLE_PLACEMENT).build();
    Audit audit = new AuditBuilder().setLocalHost().build();
    _store.createTable(TABLE, options, ImmutableMap.of(), audit);
}
 

@BeforeClass
public void setup() throws Exception {
    _lifeCycle = new SimpleLifeCycleRegistry();
    _healthChecks = mock(HealthCheckRegistry.class);

    // Start test instance of ZooKeeper in the current JVM
    TestingServer testingServer = new TestingServer();
    _lifeCycle.manage(testingServer);

    // Connect to ZooKeeper
    final CuratorFramework curator = CuratorFrameworkFactory.newClient(testingServer.getConnectString(),
            new BoundedExponentialBackoffRetry(100, 1000, 5));
    _lifeCycle.manage(curator).start();

    // Setup the DataStoreModule
    Injector injector = Guice.createInjector(new AbstractModule() {
        @Override
        protected void configure() {
            bind(LifeCycleRegistry.class).toInstance(_lifeCycle);
            bind(HealthCheckRegistry.class).toInstance(_healthChecks);
            bind(TaskRegistry.class).toInstance(mock(TaskRegistry.class));

            DataStoreConfiguration dataStoreConfiguration = new DataStoreConfiguration()
                    .setValidTablePlacements(ImmutableSet.of("app_global:sys", "ugc_global:ugc"))
                    .setCassandraClusters(ImmutableMap.<String, CassandraConfiguration>of(
                            "ugc_global", new TestCassandraConfiguration("ugc_global", "ugc_delta_v2"),
                            "app_global", new TestCassandraConfiguration("app_global", "sys_delta_v2")))
                    .setHistoryTtl(Duration.ofDays(2));

            bind(DataStoreConfiguration.class).toInstance(dataStoreConfiguration);

            bind(String.class).annotatedWith(SystemTablePlacement.class).toInstance("app_global:sys");

            bind(DataStore.class).annotatedWith(SystemDataStore.class).toInstance(mock(DataStore.class));
            bind(JobService.class).toInstance(mock(JobService.class));
            bind(JobHandlerRegistry.class).toInstance(mock(JobHandlerRegistry.class));

            bind(DataCenterConfiguration.class).toInstance(new DataCenterConfiguration()
                    .setCurrentDataCenter("datacenter1")
                    .setSystemDataCenter("datacenter1")
                    .setDataCenterServiceUri(URI.create("http://localhost:8080"))
                    .setDataCenterAdminUri(URI.create("http://localhost:8080")));

            bind(CqlDriverConfiguration.class).toInstance(new CqlDriverConfiguration());

            bind(KeyspaceDiscovery.class).annotatedWith(Names.named("blob")).toInstance(mock(KeyspaceDiscovery.class));
            bind(String.class).annotatedWith(ServerCluster.class).toInstance("local_default");

            bind(String.class).annotatedWith(ReplicationKey.class).toInstance("password");
            bind(String.class).annotatedWith(InvalidationService.class).toInstance("emodb-cachemgr");

            bind(CuratorFramework.class).annotatedWith(Global.class).toInstance(curator);
            bind(CuratorFramework.class).annotatedWith(DataStoreZooKeeper.class)
                    .toInstance(ZKNamespaces.usingChildNamespace(curator, "applications/emodb-sor"));
            bind(CuratorFramework.class).annotatedWith(GlobalFullConsistencyZooKeeper.class)
                    .toInstance(ZKNamespaces.usingChildNamespace(curator, "applications/emodb-fct"));

            bind(new TypeLiteral<Supplier<Boolean>>(){}).annotatedWith(CqlForScans.class)
                    .toInstance(Suppliers.ofInstance(true));
            bind(new TypeLiteral<Supplier<Boolean>>(){}).annotatedWith(CqlForMultiGets.class)
                    .toInstance(Suppliers.ofInstance(true));

            bind(ServerFactory.class).toInstance(new SimpleServerFactory());

            bind(ServiceRegistry.class).toInstance(mock(ServiceRegistry.class));

            bind(Clock.class).toInstance(Clock.systemDefaultZone());

            bind(String.class).annotatedWith(CompControlApiKey.class).toInstance("CompControlApiKey");
            bind(CompactionControlSource.class).annotatedWith(LocalCompactionControl.class).toInstance(mock(CompactionControlSource.class));

            bind(Environment.class).toInstance(new Environment("emodb", Jackson.newObjectMapper(),
                    Validation.buildDefaultValidatorFactory().getValidator(),
                    new MetricRegistry(), ClassLoader.getSystemClassLoader()));

            EmoServiceMode serviceMode = EmoServiceMode.STANDARD_ALL;
            install(new SelfHostAndPortModule());
            install(new DataCenterModule(serviceMode));
            install(new CacheManagerModule());
            install(new DataStoreModule(serviceMode));
        }
    });
    _store = injector.getInstance(DataStore.class);
    _lifeCycle.start();

    Map<String, Object> template = Collections.emptyMap();
    _store.createTable(TABLE, new TableOptionsBuilder().setPlacement("ugc_global:ugc").build(), template, newAudit("create table"));
}
 

/**
 * Returns a configured, started Curator for a given location, or absent if the location does not
 * use host discovery.
 */
public static Optional<CuratorFramework> getCuratorForLocation(URI location) {
    final String defaultConnectionString;
    final String namespace;

    if (getLocationType(location) != LocationType.EMO_HOST_DISCOVERY) {
        // Only host discovery may require ZooKeeper
        return Optional.absent();
    }

    if (getHostOverride(location).isPresent()) {
        // Fixed host discovery doesn't require ZooKeeper
        return Optional.absent();
    }

    Matcher matcher = getLocatorMatcher(location);
    checkArgument(matcher.matches(), "Invalid location: %s", location);

    if (matcher.group("universe") != null) {
        // Normal host discovery
        String universe = matcher.group("universe");
        Region region = getRegion(Objects.firstNonNull(matcher.group("region"), DEFAULT_REGION));
        namespace = format("%s/%s", universe, region);
        defaultConnectionString = DEFAULT_ZK_CONNECTION_STRING;
    } else {
        // Local host discovery; typically for developer testing
        namespace = null;
        defaultConnectionString = DEFAULT_LOCAL_ZK_CONNECTION_STRING;
    }

    String connectionString = getZkConnectionStringOverride(location).or(defaultConnectionString);

    CuratorFramework curator = CuratorFrameworkFactory.builder()
            .ensembleProvider(new ResolvingEnsembleProvider(connectionString))
            .retryPolicy(new BoundedExponentialBackoffRetry(100, 1000, 10))
            .threadFactory(new ThreadFactoryBuilder().setNameFormat("emo-zookeeper-%d").build())
            .namespace(namespace)
            .build();

    curator.start();

    return Optional.of(curator);
}
 

private RetryPolicy retryPolicy() {
	return new BoundedExponentialBackoffRetry(baseSleepTimeMs,
			maxSleepTimeMs, maxRetries);
}
 

public RetryPolicy createBoundedExponentialBackoffRetry(int baseSleepTimeMs, int maxSleepTimeMs, int maxRetries) {
    RetryPolicy retryPolicy = new BoundedExponentialBackoffRetry(baseSleepTimeMs, maxSleepTimeMs, maxRetries);

    return retryPolicy;
}
 

@Provides
@Singleton
CuratorFramework provideCuratorFramework(
    ShutdownRegistry shutdownRegistry,
    @ServiceDiscoveryBindings.ZooKeeper Iterable<InetSocketAddress> zooKeeperCluster,
    ACLProvider aclProvider,
    StatsProvider statsProvider) {

  String connectString =
      FluentIterable.from(zooKeeperCluster)
          .transform(InetSocketAddressHelper::toString)
          .join(Joiner.on(','));

  if (zooKeeperConfig.getChrootPath().isPresent()) {
    connectString = connectString + zooKeeperConfig.getChrootPath().get();
  }

  // export current connection state
  for (ConnectionState connectionState : ConnectionState.values()) {
    statsProvider.makeGauge(
        zkConnectionGaugeName(connectionState),
        new Supplier<Integer>() {
          @Override
          public Integer get() {
            return connectionState.equals(currentState) ? 1 : 0;
          }
        }
    );
  }

  // connection state counter
  AtomicLong zkConnectionConnectedCounter =
      statsProvider.makeCounter(zkConnectionStateCounterName(ConnectionState.CONNECTED));
  AtomicLong zkConnectionReadonlyCounter =
      statsProvider.makeCounter(zkConnectionStateCounterName(ConnectionState.READ_ONLY));
  AtomicLong zkConnectionSuspendedCounter =
      statsProvider.makeCounter(zkConnectionStateCounterName(ConnectionState.SUSPENDED));
  AtomicLong zkConnectionReconnectedCounter =
      statsProvider.makeCounter(zkConnectionStateCounterName(ConnectionState.RECONNECTED));
  AtomicLong zkConnectionLostCounter =
      statsProvider.makeCounter(zkConnectionStateCounterName(ConnectionState.LOST));

  // This emulates the default BackoffHelper configuration used by the legacy commons/zookeeper
  // stack. BackoffHelper is unbounded, this dies after around 5 minutes using the 10 retries.
  // NB: BoundedExponentialBackoffRetry caps max retries at 29 if you send it a larger value.
  RetryPolicy retryPolicy =
      new BoundedExponentialBackoffRetry(
          Amount.of(1, Time.SECONDS).as(Time.MILLISECONDS),
          Amount.of(1, Time.MINUTES).as(Time.MILLISECONDS),
          10);

  CuratorFrameworkFactory.Builder builder = CuratorFrameworkFactory.builder()
      .dontUseContainerParents() // Container nodes are only available in ZK 3.5+.
      .connectString(connectString)
      .canBeReadOnly(false) // We must be able to write to perform leader election.
      .sessionTimeoutMs(zooKeeperConfig.getSessionTimeout().as(Time.MILLISECONDS))
      .connectionTimeoutMs(zooKeeperConfig.getConnectionTimeout().as(Time.MILLISECONDS))
      .retryPolicy(retryPolicy)
      .aclProvider(aclProvider);

  if (zooKeeperConfig.getCredentials().isPresent()) {
    Credentials credentials = zooKeeperConfig.getCredentials().get();
    builder.authorization(credentials.scheme(), credentials.authToken());
  }

  CuratorFramework curatorFramework = builder.build();
  Listenable<ConnectionStateListener> connectionStateListener = curatorFramework
      .getConnectionStateListenable();
  connectionStateListener.addListener((CuratorFramework client, ConnectionState newState) -> {
    currentState = newState;
    switch (newState) {
      case CONNECTED:
        zkConnectionConnectedCounter.getAndIncrement();
        break;
      case READ_ONLY:
        zkConnectionReadonlyCounter.getAndIncrement();
        break;
      case SUSPENDED:
        zkConnectionSuspendedCounter.getAndIncrement();
        break;
      case RECONNECTED:
        zkConnectionReconnectedCounter.getAndIncrement();
        break;
      case LOST:
        zkConnectionLostCounter.getAndIncrement();
        break;
      default:
        currentState = null;
        break;
    }
  });

  // TODO(John Sirois): It would be nice to use a Service to control the lifecycle here, but other
  // services (org.apache.aurora.scheduler.http.JettyServerModule.RedirectMonitor) rely on this
  // service being started 1st which is not deterministic as things stand.  Find a way to leverage
  // the Service system for services with Service dependencies.
  curatorFramework.start();
  shutdownRegistry.addAction(curatorFramework::close);

  return curatorFramework;
}