workflow/src/main/java/org/apache/oodt/cas/workflow/cli/action/WorkflowCliAction.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF 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 org.apache.oodt.cas.workflow.cli.action;


import org.apache.commons.lang.Validate;
import org.apache.oodt.cas.cli.action.CmdLineAction;
import org.apache.oodt.cas.workflow.system.WorkflowManagerClient;
import org.apache.oodt.cas.workflow.system.rpc.RpcCommunicationFactory;

import java.net.MalformedURLException;
import java.net.URL;

/**
 * Base {@link CmdLineAction} for Workflow Manager.
 *
 * @author bfoster (Brian Foster)
 */
public abstract class WorkflowCliAction extends CmdLineAction {

    private WorkflowManagerClient client;

    public String getUrl() {
        return System.getProperty("org.apache.oodt.cas.workflow.url");
    }

    protected synchronized WorkflowManagerClient getClient() throws MalformedURLException {
        Validate.notNull(getUrl());

        if (client == null) {
            client = RpcCommunicationFactory.createClient(new URL(getUrl()));
        }

        return client;
    }

    public void setClient(WorkflowManagerClient client) {
        this.client = client;
    }

    /**
     * This is not the best way to close the client. For the time being, we go with this way.
     *
     * @throws Throwable
     */
    @Override
    public void finalize() throws Throwable {
        if (client != null) {
            client.close();
        }

        super.finalize();
    }
}