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authorRam Krishna Verma <ram_krishna.verma@bell.ca>2021-08-19 11:00:52 -0400
committerRam Krishna Verma <ram_krishna.verma@bell.ca>2021-08-19 15:56:50 -0400
commit2877524892371091bb41d2cad3a45c3c5835feb8 (patch)
treefb3a816aa633533f50128480505749b1800e12d4 /main
parenta64891e0525af75c5ea8becf3e9234ac0c1297b4 (diff)
Add check to verify api to db connectivity
Adding a method in policy/api HealthCheckProvider to verify database connectivity. The same can then be reported in policy consolidated heath check done by PAP as well. Issue-ID: POLICY-2896 Change-Id: Id80ade57829b37ace15ae19caeefd08af61aebd5 Signed-off-by: Ram Krishna Verma <ram_krishna.verma@bell.ca>
Diffstat (limited to 'main')
-rw-r--r--main/src/main/java/org/onap/policy/api/main/rest/provider/HealthCheckProvider.java37
1 files changed, 34 insertions, 3 deletions
diff --git a/main/src/main/java/org/onap/policy/api/main/rest/provider/HealthCheckProvider.java b/main/src/main/java/org/onap/policy/api/main/rest/provider/HealthCheckProvider.java
index f4019d9a..b5a198a2 100644
--- a/main/src/main/java/org/onap/policy/api/main/rest/provider/HealthCheckProvider.java
+++ b/main/src/main/java/org/onap/policy/api/main/rest/provider/HealthCheckProvider.java
@@ -24,9 +24,14 @@
package org.onap.policy.api.main.rest.provider;
+import org.onap.policy.api.main.rest.PolicyFetchMode;
import org.onap.policy.api.main.startstop.ApiActivator;
import org.onap.policy.common.endpoints.report.HealthCheckReport;
import org.onap.policy.common.utils.network.NetworkUtil;
+import org.onap.policy.models.base.PfModelException;
+import org.onap.policy.models.base.PfModelRuntimeException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
/**
* Class to fetch health check of api service.
@@ -34,10 +39,13 @@ import org.onap.policy.common.utils.network.NetworkUtil;
*/
public class HealthCheckProvider {
+ private static final Logger LOGGER = LoggerFactory.getLogger(HealthCheckProvider.class);
+
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 API";
+ private static final String DB_CONN_FAILURE = "unable to connect with database";
/**
* Performs the health check of api service.
@@ -48,9 +56,32 @@ public class HealthCheckProvider {
final var report = new HealthCheckReport();
report.setName(NAME);
report.setUrl(URL);
- report.setHealthy(ApiActivator.isAlive());
- report.setCode(ApiActivator.isAlive() ? 200 : 500);
- report.setMessage(ApiActivator.isAlive() ? ALIVE : NOT_ALIVE);
+ boolean heathStatus = ApiActivator.isAlive();
+ if (heathStatus) {
+ boolean dbConnectionStatus = verifyApiDatabase();
+ report.setHealthy(dbConnectionStatus);
+ report.setCode(dbConnectionStatus ? 200 : 503);
+ report.setMessage(dbConnectionStatus ? ALIVE : DB_CONN_FAILURE);
+ } else {
+ report.setHealthy(heathStatus);
+ report.setCode(500);
+ report.setMessage(NOT_ALIVE);
+ }
return report;
}
+
+ /**
+ * Verifies the connectivity between api component & policy database.
+ *
+ * @return boolean signaling the verification result
+ */
+ private boolean verifyApiDatabase() {
+ try (var policyProvider = new PolicyProvider()) {
+ policyProvider.fetchPolicies(null, null, null, null, PolicyFetchMode.BARE);
+ return true;
+ } catch (PfModelException | PfModelRuntimeException pfme) {
+ LOGGER.warn("Api to database connection check failed. Details - ", pfme);
+ return false;
+ }
+ }
}