com.qwazr.library.cassandra.CassandraConnector.java Source code

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Here is the source code for com.qwazr.library.cassandra.CassandraConnector.java

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/**
 * Copyright 2014-2016 Emmanuel Keller / QWAZR
 * <p>
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 **/
package com.qwazr.library.cassandra;

import com.datastax.driver.core.ResultSet;
import com.datastax.driver.core.utils.UUIDs;
import com.fasterxml.jackson.annotation.JsonIgnore;
import com.qwazr.library.AbstractPasswordLibrary;
import org.apache.commons.io.IOUtils;

import java.io.Closeable;
import java.util.List;
import java.util.UUID;

public class CassandraConnector extends AbstractPasswordLibrary implements Closeable {

    public final List<String> hosts = null;

    public final String login = null;

    public final Integer timeout_connect_ms = null;
    public final Integer timeout_read_ms = null;

    public final Integer timeout_pool_ms = null;
    public final Integer pool_connections = null;

    @JsonIgnore
    private volatile CassandraCluster cluster = null;

    @JsonIgnore
    private String keyspace = null;

    @Override
    public void load() {
        cluster = new CassandraCluster(login, password, hosts, timeout_connect_ms, timeout_read_ms, timeout_pool_ms,
                pool_connections);
    }

    @Override
    public void close() {
        if (cluster != null) {
            IOUtils.closeQuietly(cluster);
            cluster = null;
        }
    }

    public ResultSet executeWithFetchSize(final String csql, final int fetchSize, final Object... values) {
        CassandraSession session = cluster.getSession(keyspace);
        return session.executeWithFetchSize(csql, fetchSize, values);
    }

    public ResultSet execute(final String csql, final Object... values) {
        CassandraSession session = cluster.getSession(keyspace);
        return session.execute(csql, values);
    }

    @JsonIgnore
    public UUID getTimeUUID() {
        return UUIDs.timeBased();
    }

    @JsonIgnore
    public long getTimeFromUUID(UUID uuid) {
        return UUIDs.unixTimestamp(uuid);
    }

}