com.ning.metrics.collector.processing.db.CollectorMysqlTestingHelper.java Source code

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Here is the source code for com.ning.metrics.collector.processing.db.CollectorMysqlTestingHelper.java

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/*
 * Copyright 2010-2013 Ning, Inc.
 *
 * Ning licenses this file to you 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.ning.metrics.collector.processing.db;

import com.mysql.management.MysqldResource;
import com.mysql.management.MysqldResourceI;
import java.io.File;
import java.io.IOException;
import java.net.ServerSocket;
import java.util.HashMap;
import java.util.Map;
import junit.framework.Assert;
import org.apache.commons.io.FileUtils;
import org.apache.commons.io.IOUtils;
import org.skife.jdbi.v2.DBI;
import org.skife.jdbi.v2.Handle;
import org.skife.jdbi.v2.IDBI;
import org.skife.jdbi.v2.tweak.HandleCallback;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class CollectorMysqlTestingHelper {
    private static final Logger log = LoggerFactory.getLogger(CollectorMysqlTestingHelper.class);

    public final static String USERNAME = "root";
    public final static String PASSWORD = "root";

    private File dbDir;
    private MysqldResource mysqldResource;
    private int port = 0;

    public int getPort() {
        return port;
    }

    public void startMysql() throws IOException {
        ServerSocket socket = new ServerSocket(0);

        port = socket.getLocalPort();
        socket.close();

        dbDir = File.createTempFile("mysqldb", ".db");
        Assert.assertTrue(dbDir.delete());
        Assert.assertTrue(dbDir.mkdir());

        mysqldResource = new MysqldResource(dbDir);

        Map<String, String> dbOpts = new HashMap<String, String>();

        dbOpts.put(MysqldResourceI.PORT, Integer.toString(port));
        dbOpts.put(MysqldResourceI.INITIALIZE_USER, "true");
        dbOpts.put(MysqldResourceI.INITIALIZE_USER_NAME, USERNAME);
        dbOpts.put(MysqldResourceI.INITIALIZE_PASSWORD, PASSWORD);

        mysqldResource.start("test-mysqld-thread", dbOpts);

        if (!mysqldResource.isRunning()) {
            throw new IllegalStateException("MySQL did not start.");
        }
    }

    public void stopMysql() {
        mysqldResource.shutdown();
        FileUtils.deleteQuietly(dbDir);
    }

    public void clear() {
        final IDBI dbi = new DBI(getJdbcUrl(), USERNAME, PASSWORD);
        dbi.withHandle(new HandleCallback<Void>() {

            @Override
            public Void withHandle(Handle handle) throws Exception {
                handle.execute("delete from subscriptions");
                handle.execute("delete from feed_events");
                handle.execute("delete from feeds");
                handle.execute("delete from metrics_buffer");
                handle.execute("delete from metrics_daily");
                return null;
            }

        });
    }

    public String getJdbcUrl() {
        final String jdbcUrl = "jdbc:mysql://localhost:" + port
                + "/collector_events?createDatabaseIfNotExist=true&allowMultiQueries=true";
        return jdbcUrl;
    }

    public void initDb() throws IOException {
        final String jdbcUrl = getJdbcUrl();
        final IDBI dbi = new DBI(jdbcUrl, USERNAME, PASSWORD);
        final String feed_ddl = IOUtils
                .toString(CollectorMysqlTestingHelper.class.getResourceAsStream("/db/mysql/collector_events.sql"));
        final String counter_ddl = IOUtils.toString(
                CollectorMysqlTestingHelper.class.getResourceAsStream("/db/mysql/collector_counter_events.sql"));

        log.info(String.format("Creating embedded db for url %s", jdbcUrl));
        log.info("Adding tables to the embedded db");
        dbi.withHandle(new HandleCallback<Void>() {
            @Override
            public Void withHandle(Handle handle) throws Exception {
                handle.createScript(feed_ddl).execute();
                handle.createScript(counter_ddl).execute();
                return null;
            }
        });
        log.info("Finished adding tables to the embedded db");

        log.info("Finished initializing the embedded db");
    }
}