com.aerospike.examples.BatchUpdateTTL.java Source code

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Here is the source code for com.aerospike.examples.BatchUpdateTTL.java

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/* 
 * Copyright 2012-2015 Aerospike, Inc.
 *
 * Portions may be licensed to Aerospike, Inc. under one or more contributor
 * license agreements.
 *
 * 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 http://www.apache.org/licenses/LICENSE-2.0
 *
 * 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.aerospike.examples;

import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.List;

import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.CommandLineParser;
import org.apache.commons.cli.HelpFormatter;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.PosixParser;
import org.apache.log4j.Logger;

import com.aerospike.client.AerospikeClient;
import com.aerospike.client.AerospikeException;
import com.aerospike.client.Key;
import com.aerospike.client.policy.Policy;
import com.aerospike.client.policy.WritePolicy;
import com.aerospike.client.query.RecordSet;
import com.aerospike.client.query.Statement;

/**
@author peter Milne
*/
public class BatchUpdateTTL {
    private AerospikeClient client;
    private String seedHost;
    private int port;
    private String namespace;
    private String set;
    private WritePolicy writePolicy;
    private Policy policy;

    private static Logger log = Logger.getLogger(BatchUpdateTTL.class);

    public BatchUpdateTTL(String host, int port, String namespace, String set) throws AerospikeException {
        this.client = new AerospikeClient(host, port);
        this.seedHost = host;
        this.port = port;
        this.namespace = namespace;
        this.set = set;
        this.writePolicy = new WritePolicy();
        this.policy = new Policy();
    }

    public BatchUpdateTTL(AerospikeClient client, String namespace, String set) throws AerospikeException {
        this.client = client;
        this.namespace = namespace;
        this.set = set;
        this.writePolicy = new WritePolicy();
        this.policy = new Policy();
    }

    public static void main(String[] args) throws AerospikeException {
        try {
            Options options = new Options();
            options.addOption("h", "host", true, "Server hostname (default: 127.0.0.1)");
            options.addOption("p", "port", true, "Server port (default: 3000)");
            options.addOption("n", "namespace", true, "Namespace (default: test)");
            options.addOption("s", "set", true, "Set (default: demo)");
            options.addOption("u", "usage", false, "Print usage.");

            CommandLineParser parser = new PosixParser();
            CommandLine cl = parser.parse(options, args, false);

            String host = cl.getOptionValue("h", "127.0.0.1");
            String portString = cl.getOptionValue("p", "3000");
            int port = Integer.parseInt(portString);
            String namespace = cl.getOptionValue("n", "test");
            String set = cl.getOptionValue("s", "demo");
            log.debug("Host: " + host);
            log.debug("Port: " + port);
            log.debug("Namespace: " + namespace);
            log.debug("Set: " + set);

            @SuppressWarnings("unchecked")
            List<String> cmds = cl.getArgList();
            if (cmds.size() == 0 && cl.hasOption("u")) {
                logUsage(options);
                return;
            }

            BatchUpdateTTL as = new BatchUpdateTTL(host, port, namespace, set);

            as.work();

        } catch (Exception e) {
            log.error("Critical error", e);
        }
    }

    /**
     * Write usage to console.
     */
    private static void logUsage(Options options) {
        HelpFormatter formatter = new HelpFormatter();
        StringWriter sw = new StringWriter();
        PrintWriter pw = new PrintWriter(sw);
        String syntax = BatchUpdateTTL.class.getName() + " [<options>]";
        formatter.printHelp(pw, 100, syntax, "options:", options, 0, 2, null);
        log.info(sw.toString());
    }

    public void work() throws Exception {
        /*
         * Form a statement to Query with a filter,
         * OR without a filter to scant a whole namespace/set
         */
        Statement stmt = new Statement();
        stmt.setNamespace(this.namespace);
        stmt.setSetName(this.set);
        //stmt.setFilters(Filter.equal("name", "bill"));
        /*
         * WritePolicy with new TTL
         */
        WritePolicy wp = new WritePolicy(client.writePolicyDefault);
        wp.expiration = 1800; //expire in 30 mins
        /*
         * Query
         */
        RecordSet recordSet = client.query(null, stmt);
        try {
            while (recordSet.next()) {
                Key key = recordSet.getKey();
                this.client.touch(wp, key);
            }
        } finally {
            recordSet.close();
        }

    }

}