Kura DataService简单实现

Question

我试着做了一个使用库拉DataService的简单实现

下面是我创建的LampuPintar.java的java类

package org.eclipse.kura.smarthome.lampupintar;
import org.eclipse.kura.data.DataService;
import org.osgi.service.component.ComponentContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class LampuPintar {
    private DataService m_dataservice;

    private static final Logger s_logger = LoggerFactory.getLogger(LampuPintar.class);

    private static final String APP_ID = "lampupintar";

    public void setDataService(DataService dataService){
        m_dataservice = dataService;
    }

    public void unsetDataService(DataService dataService){
        m_dataservice = null;
    }

    protected void activate(ComponentContext componentContext) {
        s_logger.info("Bundle " + APP_ID + " has started!");
        s_logger.debug(APP_ID + ": This is a debug message.");
    }

    protected void deactivate(ComponentContext componentContext) {
        s_logger.info("Bundle " + APP_ID + " has stopped!");
    }

    public void publish() {
        String topic = "smarthome/lampupintar";
        String payload = "Hello";
        int qos = 2;
        boolean retain = false;
        for (int i=0; i<20;i++){
            try {
                m_dataservice.publish(topic, payload.getBytes(), qos, retain, 2);
                s_logger.info("Publish ok");
            } catch (Exception e) {
                s_logger.error("Error while publishing", e);
            }
        } 

    }
}

这是组件定义文件component.xml

<?xml version="1.0" encoding="UTF-8"?>
<scr:component xmlns:scr="http://www.osgi.org/xmlns/scr/v1.1.0" 
    activate="activate" deactivate="deactivate" 
    name="org.eclipse.kura.smarthome.lampupintar">
<implementation class="org.eclipse.kura.smarthome.lampupintar.LampuPintar"/>
<reference bind="setDataService" 
    cardinality="1..1" 
    interface="org.eclipse.kura.data.DataService" 
    name="DataService" 
    policy="static" 
    unbind="unsetDataService"/>
</scr:component>

我试着用这些文件做一个项目，我成功地创建了.dp文件并将其安装到Kura中，但是它似乎什么也没有显示，也没有向代理发送任何东西(我签入了蚊帐代理控制台)。

这些密码怎么了?？或者是那些代码中遗漏的东西，使其完整并正常工作?？

谢谢。

Answer 1

您是否检查了日志文件(/var/ log /kura.log和/var/log/kura-控制台日志)？你在日志中看到你的“发布ok”消息了吗？您还可以使用'ss‘和'ls’命令使用OSGi控制台( 5002)检查包。这将显示包和解析是否正确。

我还会添加DataServiceListener 1，这将有助于使用DataService跟踪事件。

1