Thrfit从入门到精通
0 likes126 views
Thrift is an open-source framework for scalable cross-language services development. It uses a code generation engine to build services that work efficiently between multiple languages like C++, Java, Python, and others. Thrift defines data types and service definitions that are used to generate code to implement remote procedure calls and data objects efficiently across languages.
![接⼜描述语⾔-IDL
service <name> {
<returntype> <name>(<arguments>) [throws (<exceptions>)] ...
}
service Calculator extends shared.SharedService {
void ping(),
i32 add(1:i32 num1, 2:i32 num2),
i32 calculate(1:i32 logid, 2:Work w) throws (1:InvalidOperation ouch),
oneway void zip()
}](https://image.slidesharecdn.com/thrfit-170329014517/85/Thrfit-7-320.jpg)
Thrfit从入门到精通
- 2. Definition The Apache Thrift software framework, for scalable cross-language services development, combines a software stack with a code generation engine to build services that work efficiently and seamlessly between C++, Java, Python, PHP, Ruby, Erlang, Perl, Haskell, C#, Cocoa, JavaScript, Node.js, Smalltalk, OCaml and Delphi and other languages.
- 4. 数据结构 Basic Types：bool、byte、i16、i32、i64、double、 string、enum(i32) Containers：list<type>、set<type>、map<type1,type2> Structs：A struct has a set of strongly typed fields, each with a unique name identifier， Fields：Struct或者Message中都可以包含0个或多个 Field，结尾都会有⼀个STOP标记 Messages：Thrift报⽂单元
- 6. 数据结构-structs /** * Structs are the basic complex data structures. They are comprised of fields * which each have an integer identifier, a type, a symbolic name, and an * optional default value. * * Fields can be declared "optional", which ensures they will not be included * in the serialized output if they aren't set. Note that this requires some * manual management in some languages. */ struct Work { 1: i32 num1 = 0, 2: i32 num2, 3: Operation op, 4: optional string comment, }
- 7. 接⼜描述语⾔-IDL service <name> { <returntype> <name>(<arguments>) [throws (<exceptions>)] ... } service Calculator extends shared.SharedService { void ping(), i32 add(1:i32 num1, 2:i32 num2), i32 calculate(1:i32 logid, 2:Work w) throws (1:InvalidOperation ouch), oneway void zip() }
- 8. Example def main(): # Make socket transport = TSocket.TSocket('localhost', 9090) # Buffering is critical. Raw sockets are very slow transport = TTransport.TBufferedTransport(transport) # Wrap in a protocol protocol = TBinaryProtocol.TBinaryProtocol(transport) # Create a client to use the protocol encoder client = Calculator.Client(protocol) # Connect! transport.open() client.ping() print('ping()') sum_ = client.add(1, 1) try { handler = new CalculatorHandler(); processor = new Calculator.Processor(handler); TServerTransport serverTransport = new TServerSocket(9090); TServer server = new TSimpleServer(new Args(serverTransport).processor(processor)); // Use this for a multithreaded server // TServer server = new TThreadPoolServer(new TThreadPoolServer.Args(serverTransport).processor(processo r)); System.out.println("Starting the simple server..."); server.serve(); } catch (Exception e) { e.printStackTrace(); }
- 11. TBinaryProtocol TMessage Method Name(string) Type(8) Field Id(16) Value(string)Length(32) Field(string) Type(8) Field Id(16) Value Type(8) Key Type(8) Field(map) Key Value …… FieldStop Sequence Id (32) Method Name Length(32) Size(32) Version | Message Type(32)
- 12. TMessageType
- 13. TType
- 14. TBinaryProtocol-演⽰ CALL calculate REPLY calculate
- 15. TTransport TTransport TServerTransport accept listen close read write close open flush open
- 17. TServer TSimpleServer：单线程阻塞IO，同时只能接受⼀个客户端连接 TNonblockingServer：单线程⾮阻塞IO，同时可以接受多个客户端连 接，Messages are processed by the same thread that calls select() THsHaServer：单IO线程多Worker线程⾮阻塞IO，It uses a single thread for network I/O, and a separate pool of worker threads to handle message processing TThreadedSelectorServer：多IO线程多Worker线程⾮阻塞IO， ThreadedSelectorServer allows you to have multiple threads for network I/O TThreadPoolServer：多线程阻塞IO
- 18. TFramedTransport /** * TFramedTransport is a buffered TTransport that ensures a fully read message * every time by preceding messages with a 4-byte frame size. */ 为了解决NIO半包问题，当服务端为⾮阻塞实现时，客户端必须使⽤TFramedTransport
- 20. Service Request Service Client TProtocol TTransport Service Handler TProcessor TProtocol TTransport Client Server TServer Workflow Generated Code
- 21. Workflow
- 24. 基于Proxy的扩展 PHP Thrift Client Java Thrift Client Node.js Thrift Client Local Proxy Local Proxy Local Proxy PHP Thrift Server Java Thrift Server Node.js Thrift Server 服务发现、容错、负载均衡、断路器都可以由Local Proxy来实现，统⼀了编程语⾔，减少开销和复杂度
- 25. 谢谢！