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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2019 Nordix Foundation.
* Modifications Copyright (C) 2019, 2021 AT&T Intellectual Property.
* Modifications Copyright (C) 2021-2022 Bell Canada. All rights reserved.
* ================================================================================
* Licensed 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.
*
* SPDX-License-Identifier: Apache-2.0
* ============LICENSE_END=========================================================
*/
package org.onap.policy.pap.main.rest;
import org.onap.policy.common.endpoints.report.HealthCheckReport;
import org.onap.policy.common.utils.network.NetworkUtil;
import org.onap.policy.common.utils.services.Registry;
import org.onap.policy.models.base.PfModelRuntimeException;
import org.onap.policy.pap.main.PapConstants;
import org.onap.policy.pap.main.startstop.PapActivator;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
/**
* Class to fetch health check of PAP service.
*
* @author Ram Krishna Verma (ram.krishna.verma@est.tech)
*/
@Service
public class HealthCheckProvider {
private static final String NOT_ALIVE = "not alive";
private static final String ALIVE = "alive";
private static final String URL = NetworkUtil.getHostname();
private static final String NAME = "Policy PAP";
@Autowired
private PolicyStatusProvider policyStatusProvider;
private static final Logger LOGGER = LoggerFactory.getLogger(HealthCheckProvider.class);
/**
* Performs the health check of PAP service.
*
* @param checkDbConnectivity flag to enable pap to db connectivity verification
* @return Report containing health check status
*/
public HealthCheckReport performHealthCheck(boolean checkDbConnectivity) {
final var report = new HealthCheckReport();
report.setName(NAME);
report.setUrl(URL);
boolean alive = Registry.get(PapConstants.REG_PAP_ACTIVATOR, PapActivator.class).isAlive();
if (alive && checkDbConnectivity) {
alive = verifyPapDbConnectivity();
}
report.setHealthy(alive);
report.setCode(alive ? 200 : 503);
report.setMessage(alive ? ALIVE : NOT_ALIVE);
return report;
}
/**
* Verifies the connectivity between pap component & policy database.
*
* @return boolean signaling the verification result
*/
private boolean verifyPapDbConnectivity() {
try {
policyStatusProvider.getPolicyStatus();
return true;
} catch (PfModelRuntimeException pfModelRuntimeException) {
LOGGER.warn("Policy pap to database connection check failed. Details - ", pfModelRuntimeException);
return false;
}
}
}
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