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/*
* Copyright 2002-2018 the original author or authors.
*
* 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.springframework.messaging.core;
import java.util.Map;
import org.springframework.lang.Nullable;
import org.springframework.messaging.Message;
import org.springframework.messaging.MessagingException;
/**
* Operations for sending messages to and receiving the reply from a destination.
*
* @author Mark Fisher
* @author Rossen Stoyanchev
* @since 4.0
* @param the type of destination
* @see GenericMessagingTemplate
*/
public interface MessageRequestReplyOperations {
/**
* Send a request message and receive the reply from a default destination.
* @param requestMessage the message to send
* @return the reply, possibly {@code null} if the message could not be received,
* for example due to a timeout
*/
@Nullable
Message sendAndReceive(Message requestMessage) throws MessagingException;
/**
* Send a request message and receive the reply from the given destination.
* @param destination the target destination
* @param requestMessage the message to send
* @return the reply, possibly {@code null} if the message could not be received,
* for example due to a timeout
*/
@Nullable
Message sendAndReceive(D destination, Message requestMessage) throws MessagingException;
/**
* Convert the given request Object to serialized form, possibly using a
* {@link org.springframework.messaging.converter.MessageConverter}, send
* it as a {@link Message} to a default destination, receive the reply and convert
* its body of the specified target class.
* @param request payload for the request message to send
* @param targetClass the target type to convert the payload of the reply to
* @return the payload of the reply message, possibly {@code null} if the message
* could not be received, for example due to a timeout
*/
@Nullable
T convertSendAndReceive(Object request, Class targetClass) throws MessagingException;
/**
* Convert the given request Object to serialized form, possibly using a
* {@link org.springframework.messaging.converter.MessageConverter}, send
* it as a {@link Message} to the given destination, receive the reply and convert
* its body of the specified target class.
* @param destination the target destination
* @param request payload for the request message to send
* @param targetClass the target type to convert the payload of the reply to
* @return the payload of the reply message, possibly {@code null} if the message
* could not be received, for example due to a timeout
*/
@Nullable
T convertSendAndReceive(D destination, Object request, Class targetClass) throws MessagingException;
/**
* Convert the given request Object to serialized form, possibly using a
* {@link org.springframework.messaging.converter.MessageConverter}, send
* it as a {@link Message} with the given headers, to the specified destination,
* receive the reply and convert its body of the specified target class.
* @param destination the target destination
* @param request payload for the request message to send
* @param headers headers for the request message to send
* @param targetClass the target type to convert the payload of the reply to
* @return the payload of the reply message, possibly {@code null} if the message
* could not be received, for example due to a timeout
*/
@Nullable
T convertSendAndReceive(
D destination, Object request, @Nullable Map headers, Class targetClass)
throws MessagingException;
/**
* Convert the given request Object to serialized form, possibly using a
* {@link org.springframework.messaging.converter.MessageConverter},
* apply the given post processor and send the resulting {@link Message} to a
* default destination, receive the reply and convert its body of the given
* target class.
* @param request payload for the request message to send
* @param targetClass the target type to convert the payload of the reply to
* @param requestPostProcessor post process to apply to the request message
* @return the payload of the reply message, possibly {@code null} if the message
* could not be received, for example due to a timeout
*/
@Nullable
T convertSendAndReceive(
Object request, Class targetClass, @Nullable MessagePostProcessor requestPostProcessor)
throws MessagingException;
/**
* Convert the given request Object to serialized form, possibly using a
* {@link org.springframework.messaging.converter.MessageConverter},
* apply the given post processor and send the resulting {@link Message} to the
* given destination, receive the reply and convert its body of the given
* target class.
* @param destination the target destination
* @param request payload for the request message to send
* @param targetClass the target type to convert the payload of the reply to
* @param requestPostProcessor post process to apply to the request message
* @return the payload of the reply message, possibly {@code null} if the message
* could not be received, for example due to a timeout
*/
@Nullable
T convertSendAndReceive(D destination, Object request, Class targetClass,
MessagePostProcessor requestPostProcessor) throws MessagingException;
/**
* Convert the given request Object to serialized form, possibly using a
* {@link org.springframework.messaging.converter.MessageConverter},
* wrap it as a message with the given headers, apply the given post processor
* and send the resulting {@link Message} to the specified destination, receive
* the reply and convert its body of the given target class.
* @param destination the target destination
* @param request payload for the request message to send
* @param targetClass the target type to convert the payload of the reply to
* @param requestPostProcessor post process to apply to the request message
* @return the payload of the reply message, possibly {@code null} if the message
* could not be received, for example due to a timeout
*/
@Nullable
T convertSendAndReceive(
D destination, Object request, @Nullable Map headers, Class targetClass,
@Nullable MessagePostProcessor requestPostProcessor) throws MessagingException;
}
