ReadOsgiExample1.java

import java.io.IOException;
import java.util.Dictionary;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Reference;
import org.apache.felix.scr.annotations.ReferenceCardinality;
import org.apache.felix.scr.annotations.ReferencePolicy;
import org.apache.felix.scr.annotations.Service;
import org.osgi.service.cm.Configuration;
import org.osgi.service.cm.ConfigurationAdmin;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Service to return configuration based on pid and Key
* @author yogeshupadhyay
*
*/
@Component
@Service
public class ConfigurationUtilImpl implements ConfigurationUtil{
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY, policy = ReferencePolicy.STATIC)
private ConfigurationAdmin configAdmin;
private Configuration conf = null;
private Logger logger = LoggerFactory.getLogger(ConfigurationUtilImpl.class); 
public String getConfig(String pid,String key){
try {
if(configAdmin!=null){
conf = configAdmin.getConfiguration(pid);
if(conf!=null){
if(null!=conf.getProperties() && null!=conf.getProperties().get(key)){
return conf.getProperties().get(key).toString();
}
}
}
else
logger.error("Configuration for pid "+pid+" is Null");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
/**
Get Configuration based on PID
*/
public Dictionary<?, ?> getConfig(String pid) {
try {
if(configAdmin!=null){
conf = configAdmin.getConfiguration(pid);
if(conf!=null){
return conf.getProperties();
}
}
else
logger.error("Configuration for pid "+pid+" is Null");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
}