Apache Avro IPC Framework Overview and Piece
Apache Avro IPC Framework Overview and How to Use
Overview:
Apache Avro IPC (Inter-PROCESS Communication) is an inter-communication framework based on the AVRO serialized protocol.It provides a simple and efficient method to exchange data between different applications.
AVRO is a data serialization system developed by the Apache Software Foundation.It defines the universal architecture of data to achieve fast serialization and derivativeization of data.In Avro, the data mode and protocol are defined in JSON format, which makes it easy to understand and expand.
AVRO IPC defines the protocol in JSON format to describe communication between clients and servers.It uses binary encoding for data transmission, so it has high performance and smaller data transmission volume.
Instructions:
The following will introduce how to use Apache Avro IPC in Java.
Step 1: Definition protocol and data mode
First, we need to define communication protocols and data modes between clients and servers.This can be implemented in the JSON format of Avro.For example, we can create an agreement called "MESSAGE", which defines a method of sending messages and corresponding data modes in this agreement.
json
{
"protocol": "Message",
"namespace": "com.example",
"doc": "Message Protocol",
"types": [
{
"name": "MessageContent",
"type": "record",
"fields": [
{"name": "id", "type": "int"},
{"name": "content", "type": "string"}
]
}
],
"messages": {
"sendMessage": {
"request": [{"name": "message", "type": "MessageContent"}],
"response": "null"
}
}
}
Step 2: Generate java code
Through the tools provided by AVRO, we can generate the corresponding Java code defined above.In the Maven project, we can add the following configuration to the pom.xml file:
<build>
<plugins>
<plugin>
<groupId>org.apache.avro</groupId>
<artifactId>avro-maven-plugin</artifactId>
<version>1.10.2</version>
<executions>
<execution>
<phase>generate-sources</phase>
<goals>
<goal>schema</goal>
<goal>protocol</goal>
</goals>
<configuration>
<sourceDirectory>${project.basedir}/src/main/avro</sourceDirectory>
</configuration>
</execution>
</executions>
<dependencies>
<dependency>
<groupId>org.apache.avro</groupId>
<artifactId>avro</artifactId>
<version>1.10.2</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</build>
Save the above protocol files in the SRC/main/Avro directory, and then perform Maven's Generate-SourceS target.This will automatically generate a Java code for processing communication.
Step 3: Realize the server
On the server, we need to implement the method defined in the above agreement.We can create a class that implements protocols and cover the SendMessage method to process the received messages.
public class MessageServer implements Message {
@Override
public void sendMessage(MessageContent message) {
System.out.println("Received message: " + message.getContent());
}
public void start() throws IOException {
Server server = new NettyServer(new SpecificResponder(Message.class, this), new InetSocketAddress("localhost", 8080));
server.start();
}
}
Step 4: Implement the client
On the client, we can use the tools provided by Avro to generate a proxy class to remotely call the server.
public class MessageClient {
public static void main(String[] args) throws IOException {
Message messageClient = SpecificRequestor.getClient(Message.class, new NettyTransceiver(new InetSocketAddress("localhost", 8080)));
MessageContent messageContent = new MessageContent();
messageContent.setId(1);
messageContent.setContent("Hello, Avro IPC!");
messageClient.sendMessage(messageContent);
}
}
In the main function, we create a MESSAGE client agent object and use the object to call the SendMessage method.
Summarize:
Through APACHE AVRO IPC, we can easily exchange data exchange between different applications.We can define protocols and data modes, use the AVRO tool to generate the corresponding Java code, and use these code to achieve the server and client.Using AVRO IPC can help us achieve high -efficiency and scalability inter -process communication.
