asterix-installer/src/main/java/edu/uci/ics/asterix/installer/command/UninstallCommand.java

/*
 * Copyright 2009-2012 by The Regents of the University of California
 * 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 from
 * 
 *     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 edu.uci.ics.asterix.installer.command;

import org.kohsuke.args4j.Option;

import edu.uci.ics.asterix.event.schema.pattern.Patterns;
import edu.uci.ics.asterix.installer.driver.InstallerDriver;
import edu.uci.ics.asterix.installer.driver.InstallerUtil;
import edu.uci.ics.asterix.installer.events.PatternCreator;
import edu.uci.ics.asterix.installer.model.AsterixInstance;
import edu.uci.ics.asterix.installer.model.AsterixInstance.State;
import edu.uci.ics.asterix.installer.service.ILookupService;
import edu.uci.ics.asterix.installer.service.ServiceProvider;

public class UninstallCommand extends AbstractCommand {

    @Override
    protected void execCommand() throws Exception {
        InstallerDriver.initConfig();
        UninstallConfig uninstallConfig = ((UninstallConfig) config);
        String instanceName = uninstallConfig.name;
        InstallerUtil.validateAsterixInstanceExists(instanceName, State.INACTIVE);
        ILookupService lookupService = ServiceProvider.INSTANCE.getLookupService();
        AsterixInstance instance = lookupService.getAsterixInstance(instanceName);
        PatternCreator pc = new PatternCreator();
        Patterns patterns = pc.getLibraryUninstallPattern(instance, uninstallConfig.dataverseName,
                uninstallConfig.libraryName);
        InstallerUtil.getEventrixClient(instance.getCluster()).submit(patterns);
        LOGGER.info("Uninstalled library " + uninstallConfig.libraryName);
    }

    @Override
    protected CommandConfig getCommandConfig() {
        return new UninstallConfig();
    }

    @Override
    protected String getUsageDescription() {
        return "Uninstalls a library from an asterix instance." + "\n" + "Arguments/Options\n"
                + "-n  Name of Asterix Instance\n"
                + "-d  Name of the dataverse under which the library will be installed\n" + "-l  Name of the library\n"
                + "-l  Name of the library";
    }

}

class UninstallConfig extends CommandConfig {

    @Option(name = "-n", required = true, usage = "Name of Asterix Instance")
    public String name;

    @Option(name = "-d", required = true, usage = "Name of the dataverse under which the library will be installed")
    public String dataverseName;

    @Option(name = "-l", required = true, usage = "Name of the library")
    public String libraryName;

}