org.asteriskjava.manager.internal.ResponseBuilderImpl Maven / Gradle / Ivy

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/*
 * Copyright 2004-2006 Stefan Reuter
 *
 * 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.asteriskjava.manager.internal;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;

import org.asteriskjava.manager.response.CommandResponse;
import org.asteriskjava.manager.response.ManagerError;
import org.asteriskjava.manager.response.ManagerResponse;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Default implementation of the ResponseBuilder interface.
 * 
 * @see org.asteriskjava.manager.response.ManagerResponse
 * @author srt
 * @version $Id$
 */
class ResponseBuilderImpl extends AbstractBuilder implements ResponseBuilder {

    private static final Logger logger = LoggerFactory.getLogger(ResponseBuilderImpl.class);

    private static final Set ignoredAttributes = new HashSet<>(Arrays.asList("attributes",
            "proxyresponse", ManagerReader.COMMAND_RESULT_RESPONSE_KEY));

    private static final String RESPONSE_KEY = "response";
    private static final String PROXY_RESPONSE_KEY = "proxyresponse";
    private static final String RESPONSE_TYPE_ERROR = "error";

    public ManagerResponse buildResponse(Class responseClass,
            Map attributes) {
        final ManagerResponse response;
        final String responseType = (String) attributes.get(RESPONSE_KEY);

        if (RESPONSE_TYPE_ERROR.equalsIgnoreCase(responseType)) {
            response = new ManagerError();
        } else if (responseClass == null) {
            response = new ManagerResponse();
        } else {
            try {
                response = responseClass.newInstance();
            } catch (Exception ex) {
                logger.error("Unable to create new instance of " + responseClass.getName(), ex);
                return null;
            }
        }

        setAttributes(response, attributes, ignoredAttributes);

        if (response instanceof CommandResponse) {
            final CommandResponse commandResponse = (CommandResponse) response;
            final List result = new ArrayList<>();
            for (String resultLine : ((String) attributes
                    .get(ManagerReader.COMMAND_RESULT_RESPONSE_KEY)).split("\n")) {
                // on error there is a leading space
                if (!resultLine.equals("--END COMMAND--")
                        && !resultLine.equals(" --END COMMAND--")) {
                    result.add(resultLine);
                }
            }
            commandResponse.setResult(result);
        }

        if (response.getResponse() != null && attributes.get(PROXY_RESPONSE_KEY) != null) {
            response.setResponse((String) attributes.get(PROXY_RESPONSE_KEY));
        }

        // make the map of all attributes available to the response
        // but clone it as it is reused by the ManagerReader
        response.setAttributes(new HashMap(attributes));

        return response;
    }
}