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

Example 81 with Cluster

use of com.datastax.driver.core.Cluster in project beam by apache.

the class CassandraIOIT method dropTable.

private static void dropTable(CassandraIOITOptions options, String keyspace, String table) {
    try (Cluster cluster = getCluster(options);
        Session session = cluster.connect()) {
        session.execute("DROP KEYSPACE IF EXISTS " + keyspace);
        session.execute("DROP TABLE IF EXISTS " + keyspace + "." + table);
    }
}

Example 82 with Cluster

use of com.datastax.driver.core.Cluster in project YCSB by brianfrankcooper.

the class CassandraCQLClient method init.

/**
 * Initialize any state for this DB. Called once per DB instance; there is one
 * DB instance per client thread.
 */
@Override
public void init() throws DBException {
    // Keep track of number of calls to init (for later cleanup)
    INIT_COUNT.incrementAndGet();
    // cluster/session instance for all the threads.
    synchronized (INIT_COUNT) {
        // Check if the cluster has already been initialized
        if (cluster != null) {
            return;
        }
        try {
            debug = Boolean.parseBoolean(getProperties().getProperty("debug", "false"));
            trace = Boolean.valueOf(getProperties().getProperty(TRACING_PROPERTY, TRACING_PROPERTY_DEFAULT));
            String host = getProperties().getProperty(HOSTS_PROPERTY);
            if (host == null) {
                throw new DBException(String.format("Required property \"%s\" missing for CassandraCQLClient", HOSTS_PROPERTY));
            }
            String[] hosts = host.split(",");
            String port = getProperties().getProperty(PORT_PROPERTY, PORT_PROPERTY_DEFAULT);
            String username = getProperties().getProperty(USERNAME_PROPERTY);
            String password = getProperties().getProperty(PASSWORD_PROPERTY);
            String keyspace = getProperties().getProperty(KEYSPACE_PROPERTY, KEYSPACE_PROPERTY_DEFAULT);
            readConsistencyLevel = ConsistencyLevel.valueOf(getProperties().getProperty(READ_CONSISTENCY_LEVEL_PROPERTY, READ_CONSISTENCY_LEVEL_PROPERTY_DEFAULT));
            writeConsistencyLevel = ConsistencyLevel.valueOf(getProperties().getProperty(WRITE_CONSISTENCY_LEVEL_PROPERTY, WRITE_CONSISTENCY_LEVEL_PROPERTY_DEFAULT));
            Boolean useSSL = Boolean.parseBoolean(getProperties().getProperty(USE_SSL_CONNECTION, DEFAULT_USE_SSL_CONNECTION));
            if ((username != null) && !username.isEmpty()) {
                Cluster.Builder clusterBuilder = Cluster.builder().withCredentials(username, password).withPort(Integer.valueOf(port)).addContactPoints(hosts);
                if (useSSL) {
                    clusterBuilder = clusterBuilder.withSSL();
                }
                cluster = clusterBuilder.build();
            } else {
                cluster = Cluster.builder().withPort(Integer.valueOf(port)).addContactPoints(hosts).build();
            }
            String maxConnections = getProperties().getProperty(MAX_CONNECTIONS_PROPERTY);
            if (maxConnections != null) {
                cluster.getConfiguration().getPoolingOptions().setMaxConnectionsPerHost(HostDistance.LOCAL, Integer.valueOf(maxConnections));
            }
            String coreConnections = getProperties().getProperty(CORE_CONNECTIONS_PROPERTY);
            if (coreConnections != null) {
                cluster.getConfiguration().getPoolingOptions().setCoreConnectionsPerHost(HostDistance.LOCAL, Integer.valueOf(coreConnections));
            }
            String connectTimoutMillis = getProperties().getProperty(CONNECT_TIMEOUT_MILLIS_PROPERTY);
            if (connectTimoutMillis != null) {
                cluster.getConfiguration().getSocketOptions().setConnectTimeoutMillis(Integer.valueOf(connectTimoutMillis));
            }
            String readTimoutMillis = getProperties().getProperty(READ_TIMEOUT_MILLIS_PROPERTY);
            if (readTimoutMillis != null) {
                cluster.getConfiguration().getSocketOptions().setReadTimeoutMillis(Integer.valueOf(readTimoutMillis));
            }
            Metadata metadata = cluster.getMetadata();
            logger.info("Connected to cluster: {}\n", metadata.getClusterName());
            for (Host discoveredHost : metadata.getAllHosts()) {
                logger.info("Datacenter: {}; Host: {}; Rack: {}\n", discoveredHost.getDatacenter(), discoveredHost.getAddress(), discoveredHost.getRack());
            }
            session = cluster.connect(keyspace);
        } catch (Exception e) {
            throw new DBException(e);
        }
    }
// synchronized
}

Example 83 with Cluster

use of com.datastax.driver.core.Cluster in project tutorials by eugenp.

the class CassandraTemplateIntegrationTest method startCassandraEmbedded.

// 
@BeforeClass
public static void startCassandraEmbedded() throws InterruptedException, TTransportException, ConfigurationException, IOException {
    EmbeddedCassandraServerHelper.startEmbeddedCassandra();
    final Cluster cluster = Cluster.builder().addContactPoints("127.0.0.1").withPort(9142).build();
    LOGGER.info("Server Started at 127.0.0.1:9142... ");
    final Session session = cluster.connect();
    session.execute(KEYSPACE_CREATION_QUERY);
    session.execute(KEYSPACE_ACTIVATE_QUERY);
    LOGGER.info("KeySpace created and activated.");
    Thread.sleep(5000);
}

Example 84 with Cluster

use of com.datastax.driver.core.Cluster in project ASAP by salmant.

the class SS1 method Fetch_AVG_response_time_metric.

// ///////////////////////////////////////////
public static double Fetch_AVG_response_time_metric(String metric_name, String haproxy_agentid, String event_date) {
    Cluster cluster;
    Session session;
    cluster = Cluster.builder().addContactPoints("194.249.1.175").withCredentials("catascopia_user", "catascopia_pass").withPort(9042).withRetryPolicy(DowngradingConsistencyRetryPolicy.INSTANCE).withReconnectionPolicy(new ConstantReconnectionPolicy(1000L)).build();
    session = cluster.connect("jcatascopiadb");
    haproxy_agentid = haproxy_agentid + ":" + metric_name;
    ResultSet results = session.execute("select value from jcatascopiadb.metric_value_table where metricid=\'" + haproxy_agentid + "\' and event_date=\'" + event_date + "\' ORDER BY event_timestamp DESC LIMIT 1");
    double AVG_response_time_metric = 0.0;
    for (Row row : results) {
        AVG_response_time_metric = Double.parseDouble(row.getString("value"));
    }
    return Math.abs(AVG_response_time_metric);
}

Example 85 with Cluster

use of com.datastax.driver.core.Cluster in project ASAP by salmant.

the class SS1 method Fetch_request_rate_metric.

// ///////////////////////////////////////////
public static double Fetch_request_rate_metric(String metric_name, String haproxy_agentid, String event_date) {
    Cluster cluster;
    Session session;
    cluster = Cluster.builder().addContactPoints("194.249.1.175").withCredentials("catascopia_user", "catascopia_pass").withPort(9042).withRetryPolicy(DowngradingConsistencyRetryPolicy.INSTANCE).withReconnectionPolicy(new ConstantReconnectionPolicy(1000L)).build();
    session = cluster.connect("jcatascopiadb");
    haproxy_agentid = haproxy_agentid + ":" + metric_name;
    ResultSet results = session.execute("select value from jcatascopiadb.metric_value_table where metricid=\'" + haproxy_agentid + "\' and event_date=\'" + event_date + "\' ORDER BY event_timestamp DESC LIMIT 1");
    double GoodPut = 0.0;
    for (Row row : results) {
        GoodPut = Double.parseDouble(row.getString("value"));
    }
    return Math.abs(GoodPut);
}