thrift

Service Multiplexing using Apache Thrift

由 本秂侑毒 提交于 2019-12-19 09:06:29
问题 Server code: TMultiplexedProcessor processor = new TMultiplexedProcessor(); processor.registerProcessor( "AddService", new AddService.Processor(new AddHandler())); processor.registerProcessor( "MultiplyService", new MultiplyService.Processor(new MultiplyHandler())); TServerTransport serverTransport = new TServerSocket(7911); TSimpleServer server = new TSimpleServer(new TSimpleServer.Args(serverTransport). processor(processor)); System.out.println("Starting server on port 7911 ..."); server

Thrift: Is it possible to do only serialization with C++ Thrift library?

由 混江龙づ霸主 提交于 2019-12-18 15:31:54
问题 With C++ Apache Thrift library, is it possible to use only Serialization/Deserialization and not use RPC services? As I understand from this page, it is possible to do with Java library. However, I could not find the similar classes for C++ library. 回答1: Yes it is possible. Thrift lacks documentation about this subject. Well, about anything really. Here i found this: http://mail-archives.apache.org/mod_mbox/thrift-user/201010.mbox/%3C5EF8F634-79A2-45C4-9A04-6D96D3B7A84F@manbert.com%3E i

Union in thrift shows all values setted in c++

由 ↘锁芯ラ 提交于 2019-12-18 09:06:22
问题 I made a simple union of three fields union example{ 1:string STRING, 2:i64 INT64, 3:double DOUBLE } And I instantiate the example union in the client as: example ex; ex.__set_STRING("Example"); ex.__isset.STRING = true; And send the example via a method that accepts example as an argument In the server, the method that's called is done like this: void get(const example &ex) { cout << ex.__isset.STRING << ' ' << ex.__isset.INT64 << ' ' << ex.__isset.DOUBLE << endl; cout << ex << endl; } And

Union in thrift shows all values setted in c++

由 ≡放荡痞女 提交于 2019-12-18 09:05:59
问题 I made a simple union of three fields union example{ 1:string STRING, 2:i64 INT64, 3:double DOUBLE } And I instantiate the example union in the client as: example ex; ex.__set_STRING("Example"); ex.__isset.STRING = true; And send the example via a method that accepts example as an argument In the server, the method that's called is done like this: void get(const example &ex) { cout << ex.__isset.STRING << ' ' << ex.__isset.INT64 << ' ' << ex.__isset.DOUBLE << endl; cout << ex << endl; } And

Preloading java classes/libraries at jar startup?

由 為{幸葍}努か 提交于 2019-12-18 05:55:46
问题 I've written a Thrift server in Java to take advantage of a specific Java package/library, but I'm not a java programmer. The problem is; I'm seeing a time-out for the first RPC call to the server. Subsequest requests are executed without any issues, and its only affecting clients written in certain (but essential) languages. My current thought is that the server times-out on the response because upon first call it has to load all the libraries required for the request. Some Thrift client

How do I make a required thrift field optional?

由 这一生的挚爱 提交于 2019-12-18 04:55:11
问题 What is the best process for making a required field optional in thrift. For example, I have a struct... struct Message { 1: required double userID; 2: required string content; ... } ... but I want to make content optional. EDIT: To clarify, I already have consumers that use this struct, so I would need to update it without breaking those consumers. A staged upgrade is fine (ie - add a new optional field, update the downstream clients, then remove--or stop using--the old required field). 回答1:

maven can't add files in generated-sources for compilation phase

由 佐手、 提交于 2019-12-18 03:10:51
问题 I use Apache Thrift to generate code in target/generated-sources . The Thrift compiler produces a directory named gen-java which contains all the Java code. When I execute mvn compile , the code is generated correctly in target/generated-source/gen-java , but in compilation phase, it complains can't find the classes which defined in gen-java . In my understanding, Maven 2 automatically adds generated sources, is that right? And what if my testing code also depends on the generated-sources ,

Difference between Thrift and CQL 3 Columns/Rows

由 痴心易碎 提交于 2019-12-18 03:00:24
问题 At the Cassandra Summit, it was mentioned that Thrift and CQL 3 have subtle differences in their definitions of columns and rows. The Google hasn't helped me understand this difference. The only information I can find is that the metadata is different, and as such, I shouldn't mix thrift and CQL. What is the subtle difference (I've read a bit about metadata representations...)? in what way does it break the compatibility? Why is the change better? I'm happy to read any docs that will help me,

Difference between Thrift and CQL 3 Columns/Rows

由 不羁岁月 提交于 2019-12-18 02:59:33
问题 At the Cassandra Summit, it was mentioned that Thrift and CQL 3 have subtle differences in their definitions of columns and rows. The Google hasn't helped me understand this difference. The only information I can find is that the metadata is different, and as such, I shouldn't mix thrift and CQL. What is the subtle difference (I've read a bit about metadata representations...)? in what way does it break the compatibility? Why is the change better? I'm happy to read any docs that will help me,

详解RPC远程调用和消息队列MQ的区别

由 北城余情 提交于 2019-12-17 21:38:29
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 什么是RPC RPC（Remote Procedure Call）远程过程调用，主要解决远程通信间的问题，不需要了解底层网络的通信机制。 RPC服务框架有哪些 知名度较高的有Thrift(FB的)、dubbo(阿里的) RPC的一般需要经历4个步骤： 1、建立通信 首先要解决通讯的问题：即A机器想要调用B机器，首先得建立起通信连接，主要是通过在客户端和服务器之间建立TCP连接。 2、服务寻址 要解决寻址的问题，A服务器上如何连接到B服务器（如主机或IP地址）以及特定的端口，方法的名称是什么。 3、网络传输 1）序列化 当A服务器上的应用发起一个RPC调用时，调用方法和参数数据都需要先进行序列化。 2）反序列化 当B服务器接收到A服务器的请求之后，又需要对接收到的参数等信息进行反序列化操作。 4、服务调用 B服务器进行本地调用（通过代理Proxy）之后得到了返回值，此时还需要再把返回值发送回A服务器，同样也需要经过序列化操作，然后再经过网络传输将二进制数据发送回A服务器。 通常，一次完整的PRC调用需要经历如上4个步骤。 MQ(消息队列) 消息队列（MQ）是一种能实现生产者到消费者单向通信的通信模型，一般来说是指实现这个模型的中间件。 典型的特点： 1、解耦 2、可靠投递 3、广播 4、最终一致性 5、流量削峰
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