Package org.springframework.cloud.stream.binder.rabbit

Class RabbitExpressionEvaluatingInterceptor

java.lang.Object
org.springframework.cloud.stream.binder.rabbit.RabbitExpressionEvaluatingInterceptor
All Implemented Interfaces:
org.springframework.messaging.support.ChannelInterceptor
public class RabbitExpressionEvaluatingInterceptor extends Object implements org.springframework.messaging.support.ChannelInterceptor
Interceptor to evaluate expressions for outbound messages before serialization.
Since:
2.0
Author:
Gary Russell, Oleg Zhurakousky

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final String
    DELAY_HEADER
    Default name for delay header.
    static final org.springframework.expression.ExpressionParser
    PARSER
    Instance of ExpressionParser.
    static final String
    ROUTING_KEY_HEADER
    Default name for routing key header.

  • Constructor Summary

    Constructors
    Constructor
    Description
    RabbitExpressionEvaluatingInterceptor(org.springframework.expression.Expression routingKeyExpression, org.springframework.expression.Expression delayExpression, org.springframework.expression.EvaluationContext evaluationContext)
    Construct an instance with the provided expressions and evaluation context.

  • Method Summary

    Modifier and Type
    Method
    Description
    org.springframework.messaging.Message<?>
    preSend(org.springframework.messaging.Message<?> message, org.springframework.messaging.MessageChannel channel)
     

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    Methods inherited from interface org.springframework.messaging.support.ChannelInterceptor

    afterReceiveCompletion, afterSendCompletion, postReceive, postSend, preReceive

  • Field Details

    • PARSER

      public static final org.springframework.expression.ExpressionParser PARSER
      Instance of ExpressionParser.

    • ROUTING_KEY_HEADER

      public static final String ROUTING_KEY_HEADER
      Default name for routing key header.
      See Also:

    • DELAY_HEADER

      public static final String DELAY_HEADER
      Default name for delay header.
      See Also:

  • Constructor Details

    • RabbitExpressionEvaluatingInterceptor

      public RabbitExpressionEvaluatingInterceptor(org.springframework.expression.Expression routingKeyExpression, org.springframework.expression.Expression delayExpression, org.springframework.expression.EvaluationContext evaluationContext)
      Construct an instance with the provided expressions and evaluation context. At least one expression muse be non-null.
      Parameters:
      routingKeyExpression - the routing key expresssion.
      delayExpression - the delay expression.
      evaluationContext - the evaluation context.

  • Method Details

    • preSend

      public org.springframework.messaging.Message<?> preSend(org.springframework.messaging.Message<?> message, org.springframework.messaging.MessageChannel channel)
      Specified by:
      preSend in interface org.springframework.messaging.support.ChannelInterceptor