Examples with Cluster com.datastax.driver.core.Cluster used on opensource projects

Example 41 with Cluster

use of com.datastax.driver.core.Cluster in project janusgraph by JanusGraph.

the class CQLStoreManager method initializeCluster.

Cluster initializeCluster() throws PermanentBackendException {
    final Configuration configuration = getStorageConfig();
    final List<InetSocketAddress> contactPoints;
    try {
        contactPoints = Array.of(this.hostnames).map(hostName -> hostName.split(":")).map(array -> Tuple.of(array[0], array.length == 2 ? Integer.parseInt(array[1]) : this.port)).map(tuple -> new InetSocketAddress(tuple._1, tuple._2)).toJavaList();
    } catch (SecurityException | ArrayIndexOutOfBoundsException | NumberFormatException e) {
        throw new PermanentBackendException("Error initialising cluster contact points", e);
    }
    final Builder builder = Cluster.builder().addContactPointsWithPorts(contactPoints).withClusterName(configuration.get(CLUSTER_NAME));
    if (configuration.get(PROTOCOL_VERSION) != 0) {
        builder.withProtocolVersion(ProtocolVersion.fromInt(configuration.get(PROTOCOL_VERSION)));
    }
    if (configuration.has(AUTH_USERNAME) && configuration.has(AUTH_PASSWORD)) {
        builder.withCredentials(configuration.get(AUTH_USERNAME), configuration.get(AUTH_PASSWORD));
    }
    if (configuration.has(LOCAL_DATACENTER)) {
        builder.withLoadBalancingPolicy(new TokenAwarePolicy(DCAwareRoundRobinPolicy.builder().withLocalDc(configuration.get(LOCAL_DATACENTER)).build()));
    }
    if (configuration.get(SSL_ENABLED)) {
        try {
            final TrustManager[] trustManagers;
            try (final FileInputStream keyStoreStream = new FileInputStream(configuration.get(SSL_TRUSTSTORE_LOCATION))) {
                final KeyStore keystore = KeyStore.getInstance("jks");
                keystore.load(keyStoreStream, configuration.get(SSL_TRUSTSTORE_PASSWORD).toCharArray());
                final TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
                trustManagerFactory.init(keystore);
                trustManagers = trustManagerFactory.getTrustManagers();
            }
            final SSLContext sslContext = SSLContext.getInstance("TLS");
            sslContext.init(null, trustManagers, null);
            final JdkSSLOptions sslOptions = JdkSSLOptions.builder().withSSLContext(sslContext).build();
            builder.withSSL(sslOptions);
        } catch (NoSuchAlgorithmException | CertificateException | IOException | KeyStoreException | KeyManagementException e) {
            throw new PermanentBackendException("Error initialising SSL connection properties", e);
        }
    }
    // Build the PoolingOptions based on the configurations
    PoolingOptions poolingOptions = new PoolingOptions();
    poolingOptions.setMaxRequestsPerConnection(HostDistance.LOCAL, configuration.get(LOCAL_MAX_REQUESTS_PER_CONNECTION)).setMaxRequestsPerConnection(HostDistance.REMOTE, configuration.get(REMOTE_MAX_REQUESTS_PER_CONNECTION));
    poolingOptions.setConnectionsPerHost(HostDistance.LOCAL, configuration.get(LOCAL_CORE_CONNECTIONS_PER_HOST), configuration.get(LOCAL_MAX_CONNECTIONS_PER_HOST)).setConnectionsPerHost(HostDistance.REMOTE, configuration.get(REMOTE_CORE_CONNECTIONS_PER_HOST), configuration.get(REMOTE_MAX_CONNECTIONS_PER_HOST));
    return builder.withPoolingOptions(poolingOptions).build();
}