ActiveJ: deployment and extension guide for the RPC framework

ActiveJ is a high -performance Java framework that can be used to build scalable RPC (remote process call) system.This article will provide you with a guide to deployment and extension of the ActiveJ RPC framework.In the case, we will also provide Java code examples. The first step to deploy the ActiveJ RPC framework is to introduce ActiveJ dependencies in your project.You can achieve it by adding the following maven dependence in the construction file of the project: <dependency> <groupId>io.activej</groupId> <artifactId>activej-rpc</artifactId> <version>your-version</version> </dependency> Next, we will introduce how to build and deploy RPC services and clients in ActiveJ in detail. Build an RPC service To build an RPC service, you need to define your service interface.For example, assuming we have a simple mathematical computing service, we can define the following interface: public interface MathService { int add(int a, int b); int multiply(int a, int b); } Then, you need to implement a specific service class for this interface: public class MathServiceImpl implements MathService { @Override public int add(int a, int b) { return a + b; } @Override public int multiply(int a, int b) { return a * b; } } Next, in your service start -up class, you need the following steps: 1. Create an ActiveJ EVENTLOOP object, which is the core component of all events and tasks: Eventloop eventloop = Eventloop.create(); 2. Create an ActiveJ RPCSERVER object for deployment and providing RPC services: EventloopServer eventloopServer = EventloopServer.create(eventloop); 3. Add your service to the RPCSERVER object: eventloopServer.rpcRegistry() .register(MathService.class, new MathServiceImpl()); 4. Start RPCServer: eventloopServer.withListenSocket(new InetSocketAddress("localhost", 8080)) .withListenPort(8080) .withAcceptOnce() .withExceptionHandler(ExceptionHandlers::verboseExceptionHandler) .withWorkerThreadStateListener(ExceptionHandlers::logException) .run(); In this way, you successfully build and deploy an RPC service. Build an RPC client To build a RPC client, you need to complete the following steps: 1. Create an Activej EventLoop object: Eventloop eventloop = Eventloop.create(); 2. Create an ActiveJ RPCClient object to communicate with remote services: RpcClient rpcClient = RpcClient.create(eventloop); 3. Create a remote service agent: MathService mathService = rpcClient.createStub(MathService.class); 4. Make RPC call: Promise<Integer> addResult = mathService.add(5, 10); 5. Process RPC call result: addResult.whenComplete((result, exception) -> { if (exception == null) { // Processing successful results System.out.println("Result: " + result); } else { // Treatment abnormalities exception.printStackTrace(); } }); Through the above steps, you have successfully constructed an RPC client. Extend the ActiveJ RPC framework The ActiveJ RPC framework provides a variety of expansion functions that can meet your different needs.Here are some commonly used expansion methods: 1. Add certification mechanism: The ActiveJ RPC framework supports multiple authentication methods. You can add a custom certification mechanism by implementing the Authenticator interface. 2. Add current limit mechanism: You can use the Ratelimiter class of ACTIVEJ Meter to add a current limit mechanism to ensure the reliability and stability of the RPC service. 3. Add monitoring and indicators: The ActiveJ Metrics module provides tools for monitoring and indicators for collecting, recording and displaying services. 4. Add log tracking: By using the ActiveJ Tracer module, you can call RPC to add a log tracking function to better debug and check the problem. Summarize This article provides you with a guide to deployment and extension of the ActiveJ RPC framework.We introduced in detail how to build and deploy RPC services and clients, and provide corresponding Java code examples.We also briefly introduced some extensions of the ActiveJ RPC framework to allow you to customize according to your needs.I hope this information can help you use and extend the ActiveJ RPC framework smoothly.