我尝试过使用Kura DataService的简单实现
这是我制作的 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>
我尝试使用这些文件创建一个项目,我成功创建了.dp文件并将其安装到Kura Web UI,但似乎没有显示任何内容并且没有向代理发送任何内容(我在mosquitto代理控制台中检查过)。 / p>
这些代码有什么问题?还是从这些代码中遗漏了一些东西以使其完整和正常工作?
感谢。
答案 0 :(得分:0)
您是否检查过日志文件(/var/log/kura.log和/var/log/kura-console.log)?你看到了你的发布好吗&#34;日志中的消息?您还可以使用&#39; ss&#39;来检查您的捆绑包与OSGi控制台(telnet localhost 5002)。和&#39; ls&#39;命令。这将显示捆绑包是否正确解析。
我还要添加DataServiceListener [1]。这将有助于使用DataService跟踪事件。