How to use the "FINAGLE Thrift" framework in the Java library
How to use the "FINAGLE Thrift" framework in the Java library
FINAGLE Thrift is a Java -based framework that is used to build scalable and efficient distributed systems.It combines Twitter's FINAGLE network service framework and Apache Thrift protocol codec to provide developers with a simple way to build a reliable distributed application.
To use the FINAGLE Thrift framework in the Java library, you need to follow the following steps:
Step 1: Configure item
First, make sure to add dependencies to the construction tool of the project.In the Maven project, you can add the following dependencies to the pom.xml file:
<dependency>
<groupId>com.twitter</groupId>
<artifactId>finagle-core_2.13</artifactId>
<version>21.9.0</version>
</dependency>
<dependency>
<groupId>com.twitter</groupId>
<artifactId>finagle-thrift_2.13</artifactId>
<version>21.9.0</version>
</dependency>
Step 2: Define Thrift service
Create a Thrift interface definition file (.thrift) to define your service interface and data type.For example, create a file called "Calculator.thrift", which contains the following:
thrift
namespace java com.example.calculator
service Calculator {
i32 add(1: i32 num1, 2: i32 num2)
}
Step 3: Generate java class
Use the THRIFT compiler to generate the Java class.You can run the following commands in the command line:
thrift --gen java Calculator.thrift
After the command is executed, the Java class that matches the interface definition will be generated.
Step 4: Implement THRIFT service
Create a Java class to implement the THRIFT service interface.For example, creating a class called "Calculatorimpl.java", which implements the "ADD" method in the "Calculator" interface::
package com.example.calculator;
import com.twitter.finagle.Service;
import com.twitter.util.Future;
public class CalculatorImpl implements Calculator.ServiceIface {
@Override
public Future<Integer> add(int num1, int num2) {
int result = num1 + num2;
return Future.value(result);
}
}
Step 5: Start the THRIFT service
In your application, you can use FINAGLE to start the Thrift service.For example, creating a class called "Calculatorserver.java", which starts the Thrift service and monitors a specific port:
import com.twitter.finagle.ListeningServer;
import com.twitter.finagle.Thrift;
import com.twitter.util.Await;
import java.net.InetSocketAddress;
public class CalculatorServer {
public static void main(String[] args) throws Exception {
CalculatorImpl calculatorImpl = new CalculatorImpl();
Service<byte[], byte[]> service = new Calculator.Service(calculatorImpl, new TBinaryProtocol.Factory());
ListeningServer server = Thrift.server()
.serveIface(new InetSocketAddress(9090), service);
Await.ready(server);
}
}
Step 6: Call the Thrift service
In the client application, you can use FINAGLE to create a Thrift client to call the Thrift service.For example, creating a class called "CalculatorClient.java", which sends a request for the "ADD" method to the Thrift service and prints the result:
import com.twitter.finagle.ListeningServer;
import com.twitter.finagle.Thrift;
import com.twitter.util.Await;
import com.example.calculator.Calculator;
public class CalculatorClient {
public static void main(String[] args) throws Exception {
Calculator.ServiceIface client = Thrift.client()
.newIface("localhost:9090", Calculator.ServiceIface.class);
CompletableFuture<Integer> future = client.add(10, 20);
future.thenAccept(result -> {
System.out.println("Addition result: " + result);
});
Await.ready(future);
}
}
The above is the basic step of using the "FINAGLE Thrift" framework in the Java library.By following these steps, you can start to build a reliable and efficient distributed system.
