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authorBenjamin, Max (mb388a) <mb388a@us.att.com>2019-06-17 10:51:08 -0400
committerBenjamin, Max (mb388a) <mb388a@us.att.com>2019-06-17 11:03:23 -0400
commit1a592b9e45f95d694fbf649f41304f148e3c40fe (patch)
tree90a9749a8b6e59e375b67206529d5118a7facf5e /common/src/main
parent984f8da49f06c1563b4496572c54147014aa94bb (diff)
Changes related to eviction of connections
These are changes related to ASDC controller for evicting database connection pool when ip address changes Included other appllications such as requestDB, CatalogDB, API Handler, BPMN, OpenstackAdapter etc Change-Id: I9a96ea12fb0c10643a204a58d55360bebba326fe Issue-ID: SO-2018 Signed-off-by: Benjamin, Max (mb388a) <mb388a@us.att.com>
Diffstat (limited to 'common/src/main')
-rw-r--r--common/src/main/java/org/onap/so/db/connections/DbDnsIpAddress.java20
-rw-r--r--common/src/main/java/org/onap/so/db/connections/ScheduledDnsLookup.java78
2 files changed, 98 insertions, 0 deletions
diff --git a/common/src/main/java/org/onap/so/db/connections/DbDnsIpAddress.java b/common/src/main/java/org/onap/so/db/connections/DbDnsIpAddress.java
new file mode 100644
index 0000000000..8ee63a487b
--- /dev/null
+++ b/common/src/main/java/org/onap/so/db/connections/DbDnsIpAddress.java
@@ -0,0 +1,20 @@
+package org.onap.so.db.connections;
+
+import org.springframework.context.annotation.Scope;
+import org.springframework.stereotype.Component;
+
+@Component
+@Scope("singleton")
+public class DbDnsIpAddress {
+
+ private String ipAddress;
+
+ public String getIpAddress() {
+ return ipAddress;
+ }
+
+ public void setIpAddress(String ipAddress) {
+ this.ipAddress = ipAddress;
+ }
+
+}
diff --git a/common/src/main/java/org/onap/so/db/connections/ScheduledDnsLookup.java b/common/src/main/java/org/onap/so/db/connections/ScheduledDnsLookup.java
new file mode 100644
index 0000000000..14f2f5e9b7
--- /dev/null
+++ b/common/src/main/java/org/onap/so/db/connections/ScheduledDnsLookup.java
@@ -0,0 +1,78 @@
+package org.onap.so.db.connections;
+
+import java.lang.management.ManagementFactory;
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+import java.util.Set;
+import javax.management.JMX;
+import javax.management.MBeanServer;
+import javax.management.ObjectInstance;
+import javax.management.ObjectName;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Profile;
+import org.springframework.scheduling.annotation.Scheduled;
+import org.springframework.stereotype.Component;
+import com.zaxxer.hikari.HikariPoolMXBean;
+
+@Component
+@Profile("!test")
+public class ScheduledDnsLookup {
+
+ private static final String JMX_HIKARI_DB_POOL_LOOKUP = "com.zaxxer.hikari:type=Pool (*,*";
+
+ private static final String DB_HOST = "DB_HOST";
+
+ @Autowired
+ private DbDnsIpAddress dnsIpAddress;
+
+ private static Logger logger = LoggerFactory.getLogger(ScheduledDnsLookup.class);
+
+ @Scheduled(fixedRate = 15000)
+ public void performDnsLookup() {
+
+ String dnsUrl = System.getenv(DB_HOST);
+
+ try {
+ if (dnsUrl == null) {
+ logger.error("Database DNS is not provided. Please verify the configuration");
+ return;
+ }
+
+ InetAddress inetAddress = java.net.InetAddress.getByName(dnsUrl);
+ String ipAddress = inetAddress.getHostAddress();
+ String currentIpAddress = dnsIpAddress.getIpAddress();
+ /* This is in initial state */
+ if (currentIpAddress == null) {
+ dnsIpAddress.setIpAddress(ipAddress);
+ return;
+ }
+
+ if ((ipAddress != null) && (!ipAddress.equalsIgnoreCase(currentIpAddress))) {
+ logger.debug("Switched Database IP Address from {} to {}", currentIpAddress, ipAddress);
+ softEvictConnectionPool();
+ dnsIpAddress.setIpAddress(ipAddress);
+ }
+ } catch (UnknownHostException e) {
+ logger.warn("Database DNS %s is not resolvable to an IP Address", dnsUrl);
+ }
+
+ }
+
+ private void softEvictConnectionPool() {
+ try {
+ MBeanServer mBeanServer = ManagementFactory.getPlatformMBeanServer();
+ ObjectName queryObj = new ObjectName(JMX_HIKARI_DB_POOL_LOOKUP);
+ Set<ObjectInstance> objects = mBeanServer.queryMBeans(queryObj, null);
+ for (ObjectInstance objectInstance : objects) {
+ ObjectName poolObject = objectInstance.getObjectName();
+ HikariPoolMXBean poolProxy = JMX.newMXBeanProxy(mBeanServer, poolObject, HikariPoolMXBean.class);
+ logger.debug("database connection pool is soft evicted for connections");
+ poolProxy.softEvictConnections();
+ }
+ } catch (Exception e) {
+ logger.warn("Error encountered in evicting DB connection pool", e);
+ }
+ }
+}