org.iplantcollaborative.irods.DataStoreClientManager.java Source code

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Here is the source code for org.iplantcollaborative.irods.DataStoreClientManager.java

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/*
 * Copyright 2015 iychoi.
 *
 * 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 org.iplantcollaborative.irods;

import java.io.Closeable;
import java.io.IOException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.iplantcollaborative.conf.DataStoreConf;

/**
 *
 * @author iychoi
 */
public class DataStoreClientManager implements Closeable {

    private static final Log LOG = LogFactory.getLog(DataStoreClientManager.class);

    private DataStoreConf datastoreConf;
    private DataStoreClient currentDatastoreClient;

    public DataStoreClientManager(DataStoreConf datastoreConf) {
        if (datastoreConf == null) {
            throw new IllegalArgumentException("datastoreConf is null");
        }

        this.datastoreConf = datastoreConf;
    }

    private DataStoreClient createNewConnection() throws IOException {
        DataStoreClient dataStoreClient = new DataStoreClient(this.datastoreConf);
        dataStoreClient.connect();

        return dataStoreClient;
    }

    public synchronized DataStoreClient getDatastoreClientInstance() throws IOException {
        if (this.currentDatastoreClient == null) {
            this.currentDatastoreClient = createNewConnection();
            return this.currentDatastoreClient;
        }

        // check alive
        return this.currentDatastoreClient;
    }

    public synchronized DataStoreClient getDatastoreClientInstance(boolean newconn) throws IOException {
        if (this.currentDatastoreClient == null) {
            this.currentDatastoreClient = createNewConnection();
            return this.currentDatastoreClient;
        }

        if (newconn) {
            refreshClient();
        }

        return this.currentDatastoreClient;
    }

    public synchronized void refreshClient() {
        if (this.currentDatastoreClient != null) {
            try {
                this.currentDatastoreClient.close();
            } catch (IOException ex) {
                LOG.info(ex);
            }
            this.currentDatastoreClient = null;
        }
    }

    @Override
    public synchronized void close() throws IOException {
        if (this.currentDatastoreClient != null) {
            this.currentDatastoreClient.close();
            this.currentDatastoreClient = null;
        }
    }
}