org.jclouds.vcloud.terremark.xml.KeyPairByNameHandler.java Source code

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Here is the source code for org.jclouds.vcloud.terremark.xml.KeyPairByNameHandler.java

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/**
 *
 * Copyright (C) 2010 Cloud Conscious, LLC. <info@cloudconscious.com>
 *
 * ====================================================================
 * 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.jclouds.vcloud.terremark.xml;

import java.util.NoSuchElementException;

import javax.annotation.Resource;
import javax.inject.Inject;

import org.jclouds.http.functions.ParseSax;
import org.jclouds.logging.Logger;
import org.jclouds.vcloud.terremark.domain.KeyPair;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;

import com.google.common.base.Predicate;
import com.google.common.collect.Iterables;

/**
 * @author Adrian Cole
 */
public class KeyPairByNameHandler extends ParseSax.HandlerForGeneratedRequestWithResult<KeyPair> {

    @Resource
    protected Logger logger = Logger.NULL;
    private final KeyPairsHandler handler;

    @Inject
    public KeyPairByNameHandler(KeyPairsHandler handler) {
        this.handler = handler;
    }

    @Override
    public KeyPair getResult() {
        final String name = getRequest().getArgs().get(1).toString();
        try {
            return Iterables.find(handler.getResult(), new Predicate<KeyPair>() {

                @Override
                public boolean apply(KeyPair input) {
                    return input.getName().equals(name);
                }

            });
        } catch (NoSuchElementException e) {
            logger.debug("keypair %s/%s not found in %s", getRequest().getArgs().get(0), name, handler.getResult());
            return null;
        }
    }

    @Override
    public void startElement(String uri, String localName, String qName, Attributes attributes)
            throws SAXException {
        handler.startElement(uri, localName, qName, attributes);
    }

    public void endElement(String uri, String name, String qName) {
        handler.endElement(uri, name, qName);
    }

    public void characters(char ch[], int start, int length) {
        handler.characters(ch, start, length);
    }

}