DeviceUtils.java
/*
* Copyright (c) 2017, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
* WSO2 Inc. licenses this file to you under the Apache License,
* Version 2.0 (the "License"); you may not use this file except
* in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.wso2.extension.siddhi.device.utils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.wso2.carbon.context.PrivilegedCarbonContext;
import org.wso2.carbon.device.mgt.core.service.DeviceManagementProviderService;
import org.wso2.carbon.device.mgt.core.service.GroupManagementProviderService;
/**
* This class holds utility methods to retrieve data.
*/
public class DeviceUtils {
private static Log log = LogFactory.getLog(DeviceUtils.class);
private static DeviceManagementProviderService deviceManagementProviderService;
private static GroupManagementProviderService groupManagementProviderService;
private DeviceUtils(){
}
public static DeviceManagementProviderService getDeviceManagementProviderService() {
if (deviceManagementProviderService != null) {
return deviceManagementProviderService;
}
PrivilegedCarbonContext ctx = PrivilegedCarbonContext.getThreadLocalCarbonContext();
deviceManagementProviderService =
(DeviceManagementProviderService) ctx.getOSGiService(DeviceManagementProviderService.class, null);
if (deviceManagementProviderService == null) {
String msg = "Device Management service has not initialized.";
log.error(msg);
throw new IllegalStateException(msg);
}
return deviceManagementProviderService;
}
public static GroupManagementProviderService getGroupManagementProviderService() {
if (groupManagementProviderService != null) {
return groupManagementProviderService;
}
PrivilegedCarbonContext ctx = PrivilegedCarbonContext.getThreadLocalCarbonContext();
groupManagementProviderService =
(GroupManagementProviderService) ctx.getOSGiService(GroupManagementProviderService.class, null);
if (groupManagementProviderService == null) {
String msg = "Group Management service has not initialized.";
log.error(msg);
throw new IllegalStateException(msg);
}
return groupManagementProviderService;
}
}