com.dell.cpsd.common.rabbitmq.producer.AbstractAmqpMessageProducer Maven / Gradle / Ivy
/**
* Copyright © 2017 Dell Inc. or its subsidiaries. All Rights Reserved.
* Dell EMC Confidential/Proprietary Information
*/
package com.dell.cpsd.common.rabbitmq.producer;
import com.dell.cpsd.common.logging.ILogger;
import com.dell.cpsd.common.rabbitmq.log.RabbitMQLoggingManager;
import com.dell.cpsd.common.rabbitmq.log.RabbitMQMessageCode;
import com.dell.cpsd.common.rabbitmq.message.MessagePropertiesHelper;
import com.dell.cpsd.common.rabbitmq.processor.PropertiesPostProcessor;
import org.springframework.amqp.AmqpException;
import org.springframework.amqp.core.Exchange;
import org.springframework.amqp.core.MessageProperties;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import java.util.Calendar;
import java.util.HashMap;
import java.util.Map;
/**
* This is the service message producer.
*
*
* Copyright © 2017 Dell Inc. or its subsidiaries. All Rights Reserved.
* Dell EMC Confidential/Proprietary Information
*
*
* @since 1.1
*/
public abstract class AbstractAmqpMessageProducer
{
/*
* The logger for this class.
*/
private static final ILogger LOGGER = RabbitMQLoggingManager.getLogger(AbstractAmqpMessageProducer.class);
/*
* The exchanges used by this producer to send messages.
*/
private Map exchanges;
/*
* The RabbitTemplate used by this producer.
*/
private RabbitTemplate rabbitTemplate;
/*
* The Calendar used for timestamps.
*/
private Calendar calendar = null;
/*
* The host name of the service.
*/
private String hostname = null;
/**
* AbstractAmqpMessageProducer constructor.
*
* @param rabbitTemplate The RabbitMQ templage used by this producer.
* @param hostname The host name of the service.
* @throws IllegalArgumentException Thrown if the parameters are null.
* @since 1.0
*/
public AbstractAmqpMessageProducer(final RabbitTemplate rabbitTemplate, final String hostname)
{
super();
this.exchanges = new HashMap();
this.calendar = Calendar.getInstance();
this.setRabbitTemplate(rabbitTemplate);
this.setHostname(hostname);
}
/**
* This returns the Exchanges for this producer.
*
* @return The Exchanges for this producer.
* @since 1.0
*/
public Map getExchanges()
{
return this.exchanges;
}
/**
* This adds an Exchange for this producer.
*
* @param name The name of the exchange.
* @param exchange The Exchange to add.
* @throws IllegalArgumentException Thrown if the arguments are null.
* @since 1.0
*/
public void addExchange(final String name, final Exchange exchange)
{
if (name == null)
{
throw new IllegalArgumentException("The exchange name is not set.");
}
if (exchange == null)
{
throw new IllegalArgumentException("The exchange is not set.");
}
this.exchanges.put(name, exchange);
}
/**
* This removes an Exchange for this producer.
*
* @param name The name of the exchange.
* @since 1.0
*/
public Exchange removeExchange(final String name)
{
return this.exchanges.remove(name);
}
/**
* This returns the Exchange with the specified name.
*
* @param name The name of the exchange.
* @since 1.0
*/
public Exchange lookupExchange(final String name)
{
return this.exchanges.get(name);
}
/**
* This returns the RabbitTemplate for this producer.
*
* @return The RabbitTemplate for this producer.
* @since 1.0
*/
public RabbitTemplate getRabbitTemplate()
{
return this.rabbitTemplate;
}
/**
* This sets the RabbitTemplate for this producer.
*
* @param rabbitTemplate The RabbitTemplate for this producer.
* @throws IllegalArgumentException Thrown if the template is null.
* @since 1.0
*/
public void setRabbitTemplate(final RabbitTemplate rabbitTemplate)
{
if (rabbitTemplate == null)
{
throw new IllegalArgumentException("The rabbit template is not set.");
}
this.rabbitTemplate = rabbitTemplate;
}
/**
* This returns the host name of the service.
*
* @return The host name of the service.
* @since 1.0
*/
public String getHostname()
{
return this.hostname;
}
/**
* This sets the host name of the service.
*
* @param hostname The host name of the service.
* @throws IllegalArgumentException Thrown if the host name is null.
* @since 1.0
*/
public void setHostname(String hostname)
{
if (hostname == null)
{
throw new IllegalArgumentException("The host name is not set.");
}
this.hostname = hostname;
}
/**
* This returns the Calendar used by this message producer.
*
* @return The Calendar used by this message producer.
* @since 1.0
*/
public Calendar getCalendar()
{
return this.calendar;
}
/**
* This publishes a message to a specified exchange.
*
* @param correlationId The correlation identifier.
* @param replyTo The reply to destination.
* @param exchangeName The exchange to publish on.
* @param routingKey The routing key.
* @param message The message to publish.
*
* throws AmqpException Thrown if the message fails to publish.
* @since 1.0
*/
protected void publishMessage(final String correlationId, final String replyTo, final String exchangeName, final String routingKey,
final Object message) throws AmqpException
{
final MessageProperties messageProperties = MessagePropertiesHelper
.makeMessageProperties(this.getCalendar().getTime(), correlationId, replyTo);
final PropertiesPostProcessor messagePostProcessor = new PropertiesPostProcessor(messageProperties);
final Exchange exchange = this.lookupExchange(exchangeName);
if (exchange == null)
{
final Object[] logParams = {exchangeName};
final String logMessage = LOGGER.error(RabbitMQMessageCode.NO_EXCHANGE_FOUND_E.getMessageCode(), logParams);
throw new AmqpException(logMessage);
}
if (LOGGER.isDebugEnabled())
{
StringBuilder builder = new StringBuilder();
builder.append(" publishMessage : ");
builder.append("exchange [").append(exchange.getName());
builder.append("], message [").append(message).append("]");
LOGGER.debug(builder.toString());
}
this.getRabbitTemplate().convertAndSend(exchange.getName(), routingKey, message, messagePostProcessor);
}
}