2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2018 Samsung Electronics Co., Ltd. All rights reserved.
6 * Modifications Copyright (C) 2019, 2021 AT&T Intellectual Property. All rights reserved.
7 * Modifications Copyright (C) 2019 Nordix Foundation.
8 * Modifications Copyright (C) 2022 Bell Canada. All rights reserved.
9 * ================================================================================
10 * Licensed under the Apache License, Version 2.0 (the "License");
11 * you may not use this file except in compliance with the License.
12 * You may obtain a copy of the License at
14 * http://www.apache.org/licenses/LICENSE-2.0
16 * Unless required by applicable law or agreed to in writing, software
17 * distributed under the License is distributed on an "AS IS" BASIS,
18 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
19 * See the License for the specific language governing permissions and
20 * limitations under the License.
22 * SPDX-License-Identifier: Apache-2.0
23 * ============LICENSE_END=========================================================
26 package org.onap.policy.api.main.rest.provider;
28 import org.onap.policy.api.main.rest.PolicyFetchMode;
29 import org.onap.policy.common.endpoints.report.HealthCheckReport;
30 import org.onap.policy.common.utils.network.NetworkUtil;
31 import org.onap.policy.models.base.PfModelException;
32 import org.onap.policy.models.base.PfModelRuntimeException;
33 import org.slf4j.Logger;
34 import org.slf4j.LoggerFactory;
35 import org.springframework.beans.factory.annotation.Autowired;
36 import org.springframework.stereotype.Service;
39 * Class to fetch health check of api service.
43 public class HealthCheckProvider {
45 private static final Logger LOGGER = LoggerFactory.getLogger(HealthCheckProvider.class);
47 private static final String ALIVE = "alive";
48 private static final String URL = NetworkUtil.getHostname();
49 private static final String NAME = "Policy API";
50 private static final String DB_CONN_FAILURE = "unable to connect with database";
53 private PolicyProvider policyProvider;
56 * Performs the health check of api service.
58 * @return Report containing health check status
60 public HealthCheckReport performHealthCheck() {
61 final var report = new HealthCheckReport();
62 final var dbConnectionStatus = verifyApiDatabase();
65 report.setHealthy(dbConnectionStatus);
66 report.setCode(dbConnectionStatus ? 200 : 503);
67 report.setMessage(dbConnectionStatus ? ALIVE : DB_CONN_FAILURE);
72 * Verifies the connectivity between api component & policy database.
74 * @return boolean signaling the verification result
76 private boolean verifyApiDatabase() {
78 policyProvider.fetchPolicies(null, null, null, null, PolicyFetchMode.BARE);
80 } catch (PfModelException | PfModelRuntimeException pfme) {
81 LOGGER.warn("Api to database connection check failed. Details - ", pfme);