OSGI Enroute IoT Circuit Application framework entrance tutorial
OSGI Enroute IoT Circuit Application framework entrance tutorial
This tutorial will introduce how to use OSGI Enroute IoT Circuit Application framework to construct an IoT circuit application.This framework aims to simplify IoT application development and provide easy -to -use API and components.
Preparation:
Before starting, you need to install the following software and tools:
-JAVA Development Tool Pack (JDK)
-Maven building tool
-Eclipse IDE (optional)
Step 1: Create a new Maven project
First, let's create a new Maven project to build our IoT circuit application.Perform the following commands in the command line or Eclipse IDE:
shell
$ mvn archetype:generate -DarchetypeGroupId=biz.aQute.bnd \
-DarchetypeArtifactId=bnd-maven-archetype -DarchetypeVersion=5.0.0 \
-DgroupId=com.example -DartifactId=my-iot-circuit-app \
-Dversion=1.0-SNAPSHOT
This will generate a Maven project called "My-Iot-Circuit-APP".
Step 2: Add dependencies
Add the following dependencies in the project's `pom.xml` file:
<dependencies>
<dependency>
<groupId>org.osgi</groupId>
<artifactId>org.osgi.core</artifactId>
<version>1.8.0</version>
</dependency>
<dependency>
<groupId>osgi.enroute.base.api</groupId>
<artifactId>org.osgi.enroute.base.api</artifactId>
<version>1.2.0</version>
</dependency>
<dependency>
<groupId>osgi.enroute.messaging.api</groupId>
<artifactId>org.osgi.enroute.messaging.api</artifactId>
<version>1.0.0</version>
</dependency>
</dependencies>
These dependencies will provide us the necessary APIs we use in applications.
Step 3: Write the application code
Create a java class file in the `src/main/java/com/example` directory, and add the following code:
package com.example;
import org.osgi.service.component.annotations.*;
import osgi.enroute.dto.api.DTOs;
import osgi.enroute.dto.api.UnknownData;
import java.util.Map;
@Component(service = Object.class)
public class MyIoTCircuitApp {
private final DTOs dtos;
public MyIoTCircuitApp(DTOs dtos) {
this.dtos = dtos;
}
@Activate
protected void activate(Map<String, Object> configuration) {
// The logic executed when applied activation
System.out.println("My IoT Circuit Application is activated!");
}
@Deactivate
protected void deactivate() {
// The logic executed when the application is discontinued
System.out.println("My IoT Circuit Application is deactivated!");
}
public void processData(UnknownData data) {
// Process the received data
System.out.println("Received data: " + dtos.convert(data, Map.class));
}
}
In the above example, we created a class called `myiotcircuitapp`, and use OSGI annotation`@Component` to mark it as an OSGI component.The `DTOS` object is injected by the constructor to process data conversion.
We also define the method of `@activate` and`@deactivate` to perform corresponding logic when applying activation and deactivation.
Finally, we added a method called `ProcessData` to process the received data.
Step 4: Construction and running application
Run the following commands to build an application:
shell
$ mvn clean install
After the construction is successful, you can deploy the generated jar file into your favorite OSGI container, such as Apache Felix or Eclipse Equinox.
After running the application, you will see the output message of "My IoT Circuit Application is Activated!".
Conclusion
In this tutorial, we briefly introduced how to use OSGI Enroute IoT Circuit Application framework to build an IoT circuit application.By following these simple steps, you can start developing your own OSGI -based IoT applications.
I hope this tutorial will help you, I wish you a happy development!
