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Java LoadBalancingPolicy類代碼示例

本文整理匯總了Java中com.datastax.driver.core.policies.LoadBalancingPolicy類的典型用法代碼示例。如果您正苦於以下問題：Java LoadBalancingPolicy類的具體用法？Java LoadBalancingPolicy怎麽用？Java LoadBalancingPolicy使用的例子？那麽, 這裏精選的類代碼示例或許可以為您提供幫助。


LoadBalancingPolicy類屬於com.datastax.driver.core.policies包，在下文中一共展示了LoadBalancingPolicy類的15個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Java代碼示例。

示例1: connect

import com.datastax.driver.core.policies.LoadBalancingPolicy; //導入依賴的package包/類
static Session connect() {
	String contactPoint = "localhost";
	String keySpace = "ks1";
	
	if(session == null) {
		
		DCAwareRoundRobinPolicy dcAwarePolicy = new DCAwareRoundRobinPolicy.Builder().build();
		LoadBalancingPolicy policy = new TokenAwarePolicy(dcAwarePolicy);
		
		cluster = Cluster.builder().addContactPoint(contactPoint)
				.withLoadBalancingPolicy(policy).build();
		cluster.init();
		for (Host host : cluster.getMetadata().getAllHosts()) {
			System.out.printf("Address: %s, Rack: %s, Datacenter: %s, Tokens: %s\n", host.getAddress(),
					host.getDatacenter(), host.getRack(), host.getTokens());
		}
	}
	return session;
}
開發者ID:abulbasar，項目名稱:cassandra-java-driver-examples，代碼行數:20，代碼來源:LoadBalancingPolicyExample.java

示例2: parseLbPolicy

import com.datastax.driver.core.policies.LoadBalancingPolicy; //導入依賴的package包/類
/**
 * Parse the load balancing policy.
 */
public static LoadBalancingPolicy parseLbPolicy(String loadBalancingPolicyString) throws InstantiationException,
    IllegalAccessException, ClassNotFoundException, NoSuchMethodException, SecurityException,
    IllegalArgumentException, InvocationTargetException {
    String lb_regex = "([a-zA-Z]*Policy)(\\()(.*)(\\))";
    Pattern lb_pattern = Pattern.compile(lb_regex);
    if (!loadBalancingPolicyString.contains("(")) {
        loadBalancingPolicyString += "()";
    }
    Matcher lb_matcher = lb_pattern.matcher(loadBalancingPolicyString);

    if (lb_matcher.matches()) {
        if (lb_matcher.groupCount() > 0) {
            // Primary LB policy has been specified
            String primaryLoadBalancingPolicy = lb_matcher.group(1);
            String loadBalancingPolicyParams = lb_matcher.group(3);
            return getLbPolicy(primaryLoadBalancingPolicy, loadBalancingPolicyParams);
        }
    }
    return null;
}
開發者ID:dalbelap，項目名稱:flipper-reverse-image-search，代碼行數:24，代碼來源:CassandraProperties.java

示例3: connect

import com.datastax.driver.core.policies.LoadBalancingPolicy; //導入依賴的package包/類
/**
 * Connect to a cassandra cluster at a given host/port
 */
public void connect() {
    try {
        lock.lock();
    } catch (IOException e) {
        throw new IllegalStateException("There appears to be another health check running", e);
    }
    final List<InetSocketAddress> whiteList= new ArrayList<>();
    whiteList.add(new InetSocketAddress(host, port));

    final LoadBalancingPolicy loadBalancingPolicy = new WhiteListPolicy(new RoundRobinPolicy(), whiteList);
    final Cluster.Builder cb = Cluster.builder()
            .addContactPoint(host)
            .withPort(port)
            .withLoadBalancingPolicy(loadBalancingPolicy)
            .withRetryPolicy(retryPolicy);
    if (username != null) {
        cb.withCredentials(username, password);
    }
    cluster = cb.build();
    session = cluster.connect();
    hosts = cluster.getMetadata().getAllHosts();
}
開發者ID:lookout，項目名稱:cassandra-health-check，代碼行數:26，代碼來源:CassandraHealthCheck.java

示例4: build

import com.datastax.driver.core.policies.LoadBalancingPolicy; //導入依賴的package包/類
@Override
public LoadBalancingPolicy build() {
    LatencyAwarePolicy.Builder builder = LatencyAwarePolicy.builder(subPolicy.build());

    if (exclusionThreshold != null) {
        builder.withExclusionThreshold(exclusionThreshold);
    }

    if (minimumMeasurements != null) {
        builder.withMininumMeasurements(minimumMeasurements);
    }

    if (retryPeriod != null) {
        builder.withRetryPeriod(retryPeriod.getQuantity(), retryPeriod.getUnit());
    }

    if (scale != null) {
        builder.withScale(scale.getQuantity(), scale.getUnit());
    }

    if (updateRate != null) {
        builder.withUpdateRate(updateRate.getQuantity(), updateRate.getUnit());
    }

    return builder.build();
}
開發者ID:composable-systems，項目名稱:dropwizard-cassandra，代碼行數:27，代碼來源:LatencyAwarePolicyFactory.java

示例5: build

import com.datastax.driver.core.policies.LoadBalancingPolicy; //導入依賴的package包/類
@Override
public LoadBalancingPolicy build() {
    DCAwareRoundRobinPolicy.Builder builder = DCAwareRoundRobinPolicy.builder();

    if (allowRemoteDCsForLocalConsistencyLevel == Boolean.TRUE) {
        builder.allowRemoteDCsForLocalConsistencyLevel();
    }

    if (localDC != null) {
        builder.withLocalDc(localDC);
    }

    if (usedHostsPerRemoteDC != null) {
        builder.withUsedHostsPerRemoteDc(usedHostsPerRemoteDC);
    }

    return builder.build();
}
開發者ID:composable-systems，項目名稱:dropwizard-cassandra，代碼行數:19，代碼來源:DCAwareRoundRobinPolicyFactory.java

示例6: buildsPolicyWithNoParams

import com.datastax.driver.core.policies.LoadBalancingPolicy; //導入依賴的package包/類
@Test
public void buildsPolicyWithNoParams() throws Exception {
    final LatencyAwarePolicyFactory factory = new LatencyAwarePolicyFactory();
    factory.setSubPolicy(subPolicyFactory);

    final LoadBalancingPolicy policy = factory.build();

    assertThat(policy).isSameAs(resultingPolicy);
    verify(subPolicyFactory).build();

    verify(policyBuilder, never()).withExclusionThreshold(anyDouble());
    verify(policyBuilder, never()).withMininumMeasurements(anyInt());
    verify(policyBuilder, never()).withRetryPeriod(anyLong(), any(TimeUnit.class));
    verify(policyBuilder, never()).withScale(anyLong(), any(TimeUnit.class));
    verify(policyBuilder, never()).withUpdateRate(anyLong(), any(TimeUnit.class));
    verify(policyBuilder).build();
}
開發者ID:composable-systems，項目名稱:dropwizard-cassandra，代碼行數:18，代碼來源:LatencyAwarePolicyFactoryTest.java

示例7: buildsPolicyWithAllParams

import com.datastax.driver.core.policies.LoadBalancingPolicy; //導入依賴的package包/類
@Test
public void buildsPolicyWithAllParams() throws Exception {
    final LatencyAwarePolicyFactory factory = new LatencyAwarePolicyFactory();
    factory.setSubPolicy(subPolicyFactory);
    factory.setExclusionThreshold(1.0d);
    factory.setMinimumMeasurements(2);
    factory.setRetryPeriod(Duration.minutes(3));
    factory.setScale(Duration.milliseconds(100));
    factory.setUpdateRate(Duration.seconds(5));

    final LoadBalancingPolicy policy = factory.build();

    assertThat(policy).isSameAs(resultingPolicy);
    verify(subPolicyFactory).build();

    InOrder inOrder = inOrder(policyBuilder);
    inOrder.verify(policyBuilder).withExclusionThreshold(1.0d);
    inOrder.verify(policyBuilder).withMininumMeasurements(2);
    inOrder.verify(policyBuilder).withRetryPeriod(3L, TimeUnit.MINUTES);
    inOrder.verify(policyBuilder).withScale(100L, TimeUnit.MILLISECONDS);
    inOrder.verify(policyBuilder).withUpdateRate(5L, TimeUnit.SECONDS);
    inOrder.verify(policyBuilder).build();
}
開發者ID:composable-systems，項目名稱:dropwizard-cassandra，代碼行數:24，代碼來源:LatencyAwarePolicyFactoryTest.java

示例8: getInputCluster

import com.datastax.driver.core.policies.LoadBalancingPolicy; //導入依賴的package包/類
public static Cluster getInputCluster(String[] hosts, Configuration conf)
{
    int port = getInputNativePort(conf);
    Optional<AuthProvider> authProvider = getAuthProvider(conf);
    Optional<SSLOptions> sslOptions = getSSLOptions(conf);
    Optional<Integer> protocolVersion = getProtocolVersion(conf);
    LoadBalancingPolicy loadBalancingPolicy = getReadLoadBalancingPolicy(conf, hosts);
    SocketOptions socketOptions = getReadSocketOptions(conf);
    QueryOptions queryOptions = getReadQueryOptions(conf);
    PoolingOptions poolingOptions = getReadPoolingOptions(conf);
    
    Cluster.Builder builder = Cluster.builder()
                                     .addContactPoints(hosts)
                                     .withPort(port)
                                     .withCompression(ProtocolOptions.Compression.NONE);

    if (authProvider.isPresent())
        builder.withAuthProvider(authProvider.get());
    if (sslOptions.isPresent())
        builder.withSSL(sslOptions.get());

    if (protocolVersion.isPresent()) {
        builder.withProtocolVersion(protocolVersion.get());
    }
    builder.withLoadBalancingPolicy(loadBalancingPolicy)
           .withSocketOptions(socketOptions)
           .withQueryOptions(queryOptions)
           .withPoolingOptions(poolingOptions);

    return builder.build();
}
開發者ID:vcostet，項目名稱:cassandra-kmean，代碼行數:32，代碼來源:CqlConfigHelper.java

示例9: configureLoadBalancingPolicy

import com.datastax.driver.core.policies.LoadBalancingPolicy; //導入依賴的package包/類
private void configureLoadBalancingPolicy() {
    final String dataCenterNameConfiguration = (String) configuration.get(TRIDENT_CASSANDRA_LOCAL_DATA_CENTER_NAME);
    if (StringUtils.isNotEmpty(dataCenterNameConfiguration)) {
        final LoadBalancingPolicy loadBalancingPolicy = new DCAwareRoundRobinPolicy(dataCenterNameConfiguration);
        builder = builder.withLoadBalancingPolicy(loadBalancingPolicy);
    }
}
開發者ID:hpcc-systems，項目名稱:storm-cassandra-cql，代碼行數:8，代碼來源:MapConfiguredCqlClientFactory.java

示例10: readExternal

import com.datastax.driver.core.policies.LoadBalancingPolicy; //導入依賴的package包/類
/** {@inheritDoc} */
@SuppressWarnings("unchecked")
@Override public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
    fetchSize = (Integer)in.readObject();
    readConsistency = (ConsistencyLevel)in.readObject();
    writeConsistency = (ConsistencyLevel)in.readObject();
    user = U.readString(in);
    pwd = U.readString(in);
    port = (Integer)in.readObject();
    contactPoints = (List<InetAddress>)in.readObject();
    contactPointsWithPorts = (List<InetSocketAddress>)in.readObject();
    maxSchemaAgreementWaitSeconds = (Integer)in.readObject();
    protoVer = (Integer)in.readObject();
    compression = U.readString(in);
    useSSL = (Boolean)in.readObject();
    collectMetrix = (Boolean)in.readObject();
    jmxReporting = (Boolean)in.readObject();
    creds = (Credentials)in.readObject();
    loadBalancingPlc = (LoadBalancingPolicy)readObject(in);
    reconnectionPlc = (ReconnectionPolicy)readObject(in);
    addrTranslator = (AddressTranslator)readObject(in);
    speculativeExecutionPlc = (SpeculativeExecutionPolicy)readObject(in);
    authProvider = (AuthProvider)readObject(in);
    sslOptions = (SSLOptions)readObject(in);
    poolingOptions = (PoolingOptions)readObject(in);
    sockOptions = (SocketOptions)readObject(in);
    nettyOptions = (NettyOptions)readObject(in);
}
開發者ID:apache，項目名稱:ignite，代碼行數:29，代碼來源:DataSource.java

示例11: serializationTest

import com.datastax.driver.core.policies.LoadBalancingPolicy; //導入依賴的package包/類
/**
 * Serialization test.
 */
@Test
public void serializationTest() {
    DataSource src = new DataSource();

    Credentials cred = new CassandraAdminCredentials();
    String[] points = new String[]{"127.0.0.1", "10.0.0.2", "10.0.0.3"};
    LoadBalancingPolicy plc = new MyLoadBalancingPolicy();

    src.setCredentials(cred);
    src.setContactPoints(points);
    src.setReadConsistency("ONE");
    src.setWriteConsistency("QUORUM");
    src.setLoadBalancingPolicy(plc);

    JavaSerializer serializer = new JavaSerializer();

    ByteBuffer buff = serializer.serialize(src);
    DataSource _src = (DataSource)serializer.deserialize(buff);

    Credentials _cred = (Credentials)getFieldValue(_src, "creds");
    List<InetAddress> _points = (List<InetAddress>)getFieldValue(_src, "contactPoints");
    ConsistencyLevel _readCons = (ConsistencyLevel)getFieldValue(_src, "readConsistency");
    ConsistencyLevel _writeCons = (ConsistencyLevel)getFieldValue(_src, "writeConsistency");
    LoadBalancingPolicy _plc = (LoadBalancingPolicy)getFieldValue(_src, "loadBalancingPlc");

    assertTrue("Incorrectly serialized/deserialized credentials for Cassandra DataSource",
        cred.getPassword().equals(_cred.getPassword()) && cred.getUser().equals(_cred.getUser()));

    assertTrue("Incorrectly serialized/deserialized contact points for Cassandra DataSource",
        "/127.0.0.1".equals(_points.get(0).toString()) &&
        "/10.0.0.2".equals(_points.get(1).toString()) &&
        "/10.0.0.3".equals(_points.get(2).toString()));

    assertTrue("Incorrectly serialized/deserialized consistency levels for Cassandra DataSource",
        ConsistencyLevel.ONE == _readCons && ConsistencyLevel.QUORUM == _writeCons);

    assertTrue("Incorrectly serialized/deserialized load balancing policy for Cassandra DataSource",
        _plc instanceof MyLoadBalancingPolicy);
}
開發者ID:apache，項目名稱:ignite，代碼行數:43，代碼來源:DatasourceSerializationTest.java

示例12: getCluster

import com.datastax.driver.core.policies.LoadBalancingPolicy; //導入依賴的package包/類
public static Cluster getCluster(String[] hosts, Configuration conf, int port)
{
    Optional<AuthProvider> authProvider = getAuthProvider(conf);
    Optional<SSLOptions> sslOptions = getSSLOptions(conf);
    Optional<Integer> protocolVersion = getProtocolVersion(conf);
    LoadBalancingPolicy loadBalancingPolicy = getReadLoadBalancingPolicy(hosts);
    SocketOptions socketOptions = getReadSocketOptions(conf);
    QueryOptions queryOptions = getReadQueryOptions(conf);
    PoolingOptions poolingOptions = getReadPoolingOptions(conf);

    Cluster.Builder builder = Cluster.builder()
            .addContactPoints(hosts)
            .withPort(port)
            .withCompression(ProtocolOptions.Compression.NONE);

    if (authProvider.isPresent())
        builder.withAuthProvider(authProvider.get());
    if (sslOptions.isPresent())
        builder.withSSL(sslOptions.get());

    if (protocolVersion.isPresent()) {
        builder.withProtocolVersion(ProtocolVersion.fromInt(protocolVersion.get()));
    }
    builder.withLoadBalancingPolicy(loadBalancingPolicy)
            .withSocketOptions(socketOptions)
            .withQueryOptions(queryOptions)
            .withPoolingOptions(poolingOptions);

    return builder.build();
}
開發者ID:scylladb，項目名稱:scylla-tools-java，代碼行數:31，代碼來源:CqlConfigHelper.java

示例13: build

import com.datastax.driver.core.policies.LoadBalancingPolicy; //導入依賴的package包/類
@Override
public LoadBalancingPolicy build() {
    ErrorAwarePolicy.Builder builder = ErrorAwarePolicy.builder(subPolicy.build());

    if (maxErrorsPerMinute != null) {
        builder.withMaxErrorsPerMinute(maxErrorsPerMinute);
    }

    if (retryPeriod != null) {
        builder.withRetryPeriod(retryPeriod.getQuantity(), retryPeriod.getUnit());
    }

    return builder.build();
}
開發者ID:composable-systems，項目名稱:dropwizard-cassandra，代碼行數:15，代碼來源:ErrorAwarePolicyFactory.java

示例14: buildsPolicyWithNoParams

import com.datastax.driver.core.policies.LoadBalancingPolicy; //導入依賴的package包/類
@Test
public void buildsPolicyWithNoParams() throws Exception {
    final DCAwareRoundRobinPolicyFactory factory = new DCAwareRoundRobinPolicyFactory();

    final LoadBalancingPolicy policy = factory.build();

    assertThat(policy).isExactlyInstanceOf(DCAwareRoundRobinPolicy.class);
}
開發者ID:composable-systems，項目名稱:dropwizard-cassandra，代碼行數:9，代碼來源:DCAwareRoundRobinPolicyFactoryTest.java

示例15: buildsPolicyWithAllParams

import com.datastax.driver.core.policies.LoadBalancingPolicy; //導入依賴的package包/類
@Test
public void buildsPolicyWithAllParams() throws Exception {
    final DCAwareRoundRobinPolicyFactory factory = new DCAwareRoundRobinPolicyFactory();
    factory.setLocalDC("dc1");
    factory.setUsedHostsPerRemoteDC(1);
    factory.setAllowRemoteDCsForLocalConsistencyLevel(true);

    final LoadBalancingPolicy policy = factory.build();

    assertThat(policy).isExactlyInstanceOf(DCAwareRoundRobinPolicy.class);
}
開發者ID:composable-systems，項目名稱:dropwizard-cassandra，代碼行數:12，代碼來源:DCAwareRoundRobinPolicyFactoryTest.java


注：本文中的com.datastax.driver.core.policies.LoadBalancingPolicy類示例由純淨天空整理自Github/MSDocs等開源代碼及文檔管理平台，相關代碼片段篩選自各路編程大神貢獻的開源項目，源碼版權歸原作者所有，傳播和使用請參考對應項目的License；未經允許，請勿轉載。