amqp

AMQP (rabbitmq) identify origin of bad message

99封情书 提交于 2020-01-06 05:29:08
问题 What is the best way to identify the origin of a (bad) AMQP message in rabbitmq? The scenario is several clients posts messages to a server which if successful result in messages posted to a fanout exchange (for pub/sub use). The client is also a subscriber to this queue and does not have a reply queue of its own. If the server decides a message is invalid it nacks and discards it. There are two additional things we want: to publish a message which either the client or a monitoring system

AMQP-CPP - RabbitMQ Event Loop is not working

廉价感情. 提交于 2020-01-06 04:09:45
问题 I dont get the Event Loop with the RabbitMQ CPP (CopernicaMarketingSoftware/AMQP-CPP) Library from https://github.com/CopernicaMarketingSoftware/AMQP-CPP running properly. I have set up a rabbitmq server, and it works fine. My code looks like this: #include <iostream> #include <sys/select.h> #include <cop_amqpcpp.h> #include <cop_amqpcpp/linux_tcp.h> using namespace std; fd_set rfds; class MyTcpHandler : public AMQP::TcpHandler { private: /** * Method that is called when the connection

rabbitmq ReturnCallback stuck while declaring queue on NO_ROUTE(312)

笑着哭i 提交于 2020-01-05 06:26:10
问题 I am trying to use the publisher returns callback to declare queue and bindings if no route is available so that messages aren't dropped again. This is because my queue is auto-delete and would be deleted if my consumer goes down. But the ReturnCallback thread gets stuck in returnedMessage() at admin.declareQueue(queue). On Further debugging I see that it is stuck in RabbitAdmin.declareQueue() at: DeclareOk[] declared = declareQueues(channel, queue); Though this call is stuck, I see the queue

快速学习-Spring AMQP

谁都会走 提交于 2020-01-04 09:33:08
3.Spring AMQP 3.1.简介 Sprin有很多不同的项目,其中就有对AMQP的支持: Spring AMQP的页面:http://spring.io/projects/spring-amqp 注意这里一段描述: ​ Spring-amqp是对AMQP协议的抽象实现,而spring-rabbit 是对协议的具体实现,也是目前的唯一实现。底层使用的就是RabbitMQ。 2.2.依赖和配置 添加AMQP的启动器: < dependency > < groupId > org.springframework.boot </ groupId > < artifactId > spring-boot-starter-amqp </ artifactId > </ dependency > 在 application.yml 中添加RabbitMQ地址: spring : rabbitmq : host : 192.168.56.101 username : leyou password : leyou virtual-host : /leyou 2.3.监听者 在SpringAmqp中,对消息的消费者进行了封装和抽象,一个普通的JavaBean中的普通方法,只要通过简单的注解,就可以成为一个消费者。 @Component public class Listener {

Wireshark: display filters vs nested dissectors

寵の児 提交于 2020-01-04 06:11:47
问题 I have an application that sends JSON objects over AMQP, and I want to inspect the network traffic with Wireshark. The AMQP dissector gives the payload as a series of bytes in the field amqp.payload , but I'd like to extract and filter on specific fields in the JSON object, so I'm trying to write a plugin in Lua for that. Wireshark already has a dissector for JSON, so I was hoping to piggy-back on that, and not have to deal with JSON parsing myself. Here is my code: local amqp_json_p = Proto(

Possible bug with Mule AMQP transport 3.6.2 community

别说谁变了你拦得住时间么 提交于 2020-01-04 05:11:48
问题 I've been tracking down some strange behavior and I've finally managed to isolate it, and I believe that it is a bug. To reproduce the behaviour I have created 4 test flows (in 4 different mule files): <flow name="testhttpFlow"> <http:listener config-ref="HTTP_Listener_AMIAB" path="/testsend" allowedMethods="GET, POST" doc:name="HTTP"/> <amqp:outbound-endpoint exchangeName="AMQP.DEFAULT.EXCHANGE" routingKey="masterMeep" exchangeType="direct" responseTimeout="10000" exchange-pattern="request

Spring AMQP 错误处理策略详解

核能气质少年 提交于 2020-01-04 00:07:03
1.介绍 异步消息传递是一种松耦合的分布式通信,在事件驱动体系结构实现中越来越受欢迎。幸运的是,Spring框架提供了Spring AMQP项目,可以帮助我们构建基于AMQP的消息传递解决方案。 另一方面,在这种环境中处理错误并不简单。本文将讨论错误处理策略。 2.配置环境 这里使用RabbitMQ实现AMQP标准。此外,Spring AMQP还提供了spring-rabbit模块,让集成更容易。 RabbitMQ作为独立服务器运行。执行下面命令,在Docker容器中运行: docker run -d -p 5672:5672 -p 15672:15672 --name my-rabbit rabbitmq:3-management 了解更多配置信息和项目依赖项设置,请参阅Spring AMQP教程。 3.失败场景 由于分布式特性,相比一个独立整体的应用程序,通常基于消息传递的系统发生的错误类型会更多。 下面列举了一些异常类型: 网络或I/O相关故障:网络连接和I/O操作故障; 协议或基础架构相关错误:消息传递基础架构配置错误; 代理(Broker)相关故障:客户端与AMQP代理之间配置不正确。例如,达到定义的限制或阈值、身份验证或策略配置无效。 应用程序和消息相关的异常:表现为违反某些业务或应用程序规则的异常; 当然,上述故障列表并不全面,但包含了最常见的错误类型。 应该注意到

Integrating Spring Cloud Sleuth with Spring boot amqp

白昼怎懂夜的黑 提交于 2020-01-03 16:52:08
问题 Looking for an example that shows integrating spring cloud sleuth with spring boot amqp (rabbit) publisher and subscriber. I do see the following messages in the log 2016-10-21 08:35:15.708 INFO [producer,9148f56490e5742f,943ed050691842ab,false] 30928 --- [nio-8080-exec-1] a.b.c.controllers.MessagingController : Received Request to pulish with Activity OrderShipped 2016-10-21 08:35:15.730 INFO [producer,9148f56490e5742f,943ed050691842ab,false] 30928 --- [nio-8080-exec-1] a.b.c.service

Java code for Converting string message into Jena model

荒凉一梦 提交于 2020-01-03 06:19:08
问题 I have a string message from an AMQP message broker that consists of RDF statements. I want to covert it into a Jena model using Java and then merge the converted model with another one into single model. How can I do this? 回答1: This can be divided into three logical steps. Some of these, you may have already done: Isolate the RDF statements from non-rdf text Identify the syntax used for the RDF (can be part of #1) Parse the resulting string into an Apache Jena Model . As the first two are

How to send message to Azure event hub with amqp in python

旧城冷巷雨未停 提交于 2020-01-03 05:53:32
问题 Anyone knows how to send a message to Azure event hub with amqp in python? I need to send the message with partition key(not the partition id). Thanks very much. 回答1: According to the section Use of partition keys of the offical document Partitioned queues and topics , as below, you can send a message with partition key via set the PartitionKey property of the message. PartitionKey : If a message has the BrokeredMessage.PartitionKey property but not the BrokeredMessage.SessionId property set,