lucee.runtime.net.ftp.FTPPoolImpl.java Source code

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Here is the source code for lucee.runtime.net.ftp.FTPPoolImpl.java

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/**
 *
 * Copyright (c) 2014, the Railo Company Ltd. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either 
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public 
 * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
 * 
 **/
package lucee.runtime.net.ftp;

import java.io.IOException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;

import lucee.commons.lang.StringUtil;
import lucee.runtime.exp.ApplicationException;

import org.apache.commons.net.ftp.FTPClient;

/**
 * Pool of FTP Client
 */
public final class FTPPoolImpl implements FTPPool {

    Map<String, FTPWrap> wraps = new HashMap<String, FTPWrap>();
    //ArrayList arr=new ArrayList();

    @Override
    public FTPClient get(FTPConnection conn) throws IOException, ApplicationException {
        FTPClient client = _get(conn).getClient();
        if (client == null)
            throw new ApplicationException("can't connect to server [" + conn.getServer() + "]");

        FTPWrap.setConnectionSettings(client, conn);

        return client;
    }

    /**
     * returns a client from given connection
     * @param conn
     * @return 
     * @return matching wrap
     * @throws IOException
     * @throws ApplicationException
     */
    protected FTPWrap _get(FTPConnection conn) throws IOException, ApplicationException {
        FTPWrap wrap = null;

        if (!conn.hasLoginData()) {
            if (StringUtil.isEmpty(conn.getName())) {
                throw new ApplicationException("can't connect ftp server, missing connection defintion");
            }

            wrap = wraps.get(conn.getName());
            if (wrap == null) {
                throw new ApplicationException(
                        "can't connect ftp server, missing connection [" + conn.getName() + "]");
            } else if (!wrap.getClient().isConnected()
                    || wrap.getConnection().getTransferMode() != conn.getTransferMode()) {
                wrap.reConnect(conn.getTransferMode());
            }
            return wrap;
        }
        String name = conn.hasName() ? conn.getName() : "__noname__";

        wrap = wraps.get(name);
        if (wrap != null) {
            if (conn.loginEquals(wrap.getConnection())) {
                return _get(new FTPConnectionImpl(name, null, null, null, conn.getPort(), conn.getTimeout(),
                        conn.getTransferMode(), conn.isPassive(), conn.getProxyServer(), conn.getProxyPort(),
                        conn.getProxyUser(), conn.getProxyPassword()));
            }
            disconnect(wrap.getClient());
        }

        wrap = new FTPWrap(conn);
        wraps.put(name, wrap);

        return wrap;
    }

    /**
     * disconnect a client
     * @param client
     */
    private void disconnect(FTPClient client) {
        try {
            if (client != null && client.isConnected()) {
                client.quit();
                client.disconnect();
            }
        } catch (IOException ioe) {
        }
    }

    @Override
    public FTPClient remove(FTPConnection conn) {
        return remove(conn.getName());
    }

    @Override
    public FTPClient remove(String name) {
        FTPWrap wrap = wraps.remove(name);
        if (wrap == null)
            return null;

        FTPClient client = wrap.getClient();
        disconnect(client);
        return client;
    }

    @Override
    public void clear() {
        if (!wraps.isEmpty()) {
            Iterator<Entry<String, FTPWrap>> it = wraps.entrySet().iterator();
            while (it.hasNext()) {
                try {
                    Entry<String, FTPWrap> entry = it.next();
                    FTPWrap wrap = entry.getValue();
                    if (wrap != null && wrap.getClient().isConnected())
                        wrap.getClient().disconnect();
                } catch (IOException e) {
                }
            }
            wraps.clear();
        }
    }
}