com.jbrisbin.vpc.jobsched.sql.SqlMessageConverter.java Source code

Introduction

Here is the source code for com.jbrisbin.vpc.jobsched.sql.SqlMessageConverter.java

Source

/*
 * Copyright 2010 by J. Brisbin <jon@jbrisbin.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 com.jbrisbin.vpc.jobsched.sql;

import com.jbrisbin.vpc.jobsched.SecureMessageConverter;
import org.springframework.amqp.core.Message;
import org.springframework.amqp.core.MessageProperties;
import org.springframework.amqp.support.converter.MessageConversionException;

import java.io.IOException;

/**
 * @author Jon Brisbin <jon@jbrisbin.com>
 */
public class SqlMessageConverter extends SecureMessageConverter {

    public Message toMessage(Object object, MessageProperties props) throws MessageConversionException {
        if (object instanceof SqlMessage) {
            SqlMessage msg = (SqlMessage) object;
            props.setCorrelationId(msg.getId().getBytes());
            byte[] bytes;
            try {
                bytes = unmapObject(msg.getResults());
            } catch (IOException e) {
                throw new MessageConversionException(e.getMessage(), e);
            }
            props.setContentType("application/json");

            return new Message(bytes, props);
        } else {
            throw new MessageConversionException(
                    "Cannot convert object " + String.valueOf(object) + " using " + getClass().toString());
        }
    }

    public Object fromMessage(Message message) throws MessageConversionException {
        MessageProperties props = message.getMessageProperties();
        if (isAuthorized(props)) {
            //Map<String, Object> headers = props.getHeaders();
            byte[] bytes = message.getBody();
            SqlMessage msg;
            try {
                msg = mapObject(bytes, SqlMessage.class);
                msg.setId(new String(props.getCorrelationId()));
                msg.setReplyTo(props.getReplyTo().toString());
                if (log.isDebugEnabled()) {
                    log.debug(String.format(" MSG: %s", msg));
                }
            } catch (IOException e) {
                throw new MessageConversionException(e.getMessage(), e);
            }

            return msg;
        } else {
            throw new MessageConversionException("Invalid security key.");
        }
    }
}