forked from community/device-mgt-core
commit
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/*
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* Copyright (c) 2018 - 2023, Entgra (Pvt) Ltd. (http://www.entgra.io) All Rights Reserved.
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*
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* Entgra (Pvt) Ltd. licenses this file to you under the Apache License,
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* Version 2.0 (the "License"); you may not use this file except
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* in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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package io.entgra.device.mgt.core.analytics.mgt.grafana.proxy.api.impl.util;
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import io.entgra.device.mgt.core.analytics.mgt.grafana.proxy.core.service.GrafanaQueryService;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.wso2.carbon.context.PrivilegedCarbonContext;
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public class GrafanaMgtAPIUtils {
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private static final Log log = LogFactory.getLog(GrafanaMgtAPIUtils.class);
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private static volatile GrafanaQueryService grafanaQueryService;
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/**
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* Accessing GrafanaQueryService from OSGI service context
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* @return GrafanaQueryService instance
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*/
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public static GrafanaQueryService getGrafanaQueryService() {
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if (grafanaQueryService == null) {
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synchronized (GrafanaMgtAPIUtils.class) {
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if (grafanaQueryService == null) {
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PrivilegedCarbonContext ctx = PrivilegedCarbonContext.getThreadLocalCarbonContext();
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grafanaQueryService =
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(GrafanaQueryService) ctx.getOSGiService(GrafanaQueryService.class, null);
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if (grafanaQueryService == null) {
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String msg = "Grafana Query service has not initialized.";
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log.error(msg);
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throw new IllegalStateException(msg);
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}
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}
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}
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}
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return grafanaQueryService;
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}
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}
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