* PolicyEngineUtils
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * Modified Copyright (C) 2018 Samsung Electronics Co., Ltd.
* ================================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
em.persist(bMEntity);
em.flush();
} else {
- // Check for other Master(s)
- ArrayList<BackUpMonitorEntity> masterEntities = new ArrayList<>();
- // Check for self.
- BackUpMonitorEntity selfEntity = null;
- // Check backup monitor entities.
- for (int i = 0; i < bMList.size(); i++) {
- BackUpMonitorEntity bMEntity = (BackUpMonitorEntity) bMList.get(i);
- LOGGER.info("Refreshing Entity. ");
- em.refresh(bMEntity);
- if (bMEntity.getFlag().equalsIgnoreCase(MASTER)) {
- masterEntities.add(bMEntity);
- }
- if (bMEntity.getResourceName().equals(resourceName)) {
- selfEntity = bMEntity;
- }
- }
- if (selfEntity != null) {
- LOGGER.info("Resource Name already Exists: " + resourceName);
- if (selfEntity.getFlag().equalsIgnoreCase(MASTER)) {
- // Already Master Mode.
- setFlag(true);
- LOGGER.info(resourceName + " is on Master Mode");
- selfEntity.setTimeStamp(new Date());
- selfEntity.setNotificationRecord(notificationRecord);
- em.persist(selfEntity);
- em.flush();
- setLastNotification(null);
- if (!masterEntities.contains(selfEntity)) {
- masterEntities.add(selfEntity);
- }
- } else {
- // Already Slave Mode.
- setFlag(false);
- selfEntity.setTimeStamp(new Date());
- selfEntity.setNotificationRecord(notificationRecord);
- em.persist(selfEntity);
- em.flush();
- LOGGER.info(resourceName + " is on Slave Mode");
- }
- } else {
- // Resource name is null -> No resource with same name.
- selfEntity = new BackUpMonitorEntity();
- selfEntity.setResourceNodeName(resourceNodeName);
- selfEntity.setResourceName(resourceName);
- selfEntity.setTimeStamp(new Date());
- selfEntity = setSlave(selfEntity);
- setLastNotification(null);
- LOGGER.info("Creating: " + resourceName + " on Slave Mode");
- em.persist(selfEntity);
- em.flush();
- }
- // Correct the database if any errors and perform monitor checks.
- if (masterEntities.size() != 1 || !getFlag()) {
- // We are either not master or there are more masters or no masters.
- if (masterEntities.isEmpty()) {
- // No Masters is a problem Convert ourselves to Master.
- selfEntity = setMaster(selfEntity);
- selfEntity.setTimeStamp(new Date());
- selfEntity.setNotificationRecord(notificationRecord);
- LOGGER.info(resourceName + " changed to Master Mode - No Masters available.");
- em.persist(selfEntity);
- em.flush();
- } else {
- if (masterEntities.size() > 1) {
- // More Masters is a problem, Fix the issue by looking for the latest one and make others
- // Slave.
- BackUpMonitorEntity masterEntity = null;
- for (BackUpMonitorEntity currentEntity : masterEntities) {
- if (currentEntity.getFlag().equalsIgnoreCase(MASTER)) {
- if (masterEntity == null) {
- masterEntity = currentEntity;
- } else if (currentEntity.getTimeStamp().getTime() > masterEntity.getTimeStamp()
- .getTime()) {
- // False Master, Update master to slave and take currentMaster as Master.
- masterEntity.setFlag(SLAVE);
- masterEntity.setTimeStamp(new Date());
- em.persist(masterEntity);
- em.flush();
- masterEntity = currentEntity;
- } else {
- currentEntity.setFlag(SLAVE);
- currentEntity.setTimeStamp(new Date());
- em.persist(currentEntity);
- em.flush();
- }
- }
- }
- masterEntities = new ArrayList<>();
- masterEntities.add(masterEntity);
- }
- if (masterEntities.size() == 1) {
- // Correct Size, Check if Master is Latest, if not Change Master to Slave and Slave to
- // Master.
- BackUpMonitorEntity masterEntity = masterEntities.get(0);
- if (!masterEntity.getResourceName().equals(selfEntity.getResourceName())) {
- Date currentTime = new Date();
- long timeDiff;
- timeDiff = currentTime.getTime() - masterEntity.getTimeStamp().getTime();
- if (timeDiff > (pingInterval + 1500)) {
- // This is down or has an issue and we need to become Master while turning the
- // Master to slave.
- masterEntity.setFlag(SLAVE);
- String lastNotification = null;
- if (masterEntity.getNotificationRecord() != null) {
- lastNotification = calculatePatch(masterEntity.getNotificationRecord());
- }
- setLastNotification(lastNotification);
- em.persist(masterEntity);
- em.flush();
- // Lets Become Master.
- selfEntity = setMaster(selfEntity);
- LOGGER.info("Changing " + resourceName + " from slave to Master Mode");
- selfEntity.setTimeStamp(new Date());
- selfEntity.setNotificationRecord(notificationRecord);
- em.persist(selfEntity);
- em.flush();
- }
- }
- } else {
- LOGGER.error(
- "Backup Monitor Issue, Masters out of sync, This will be fixed in next interval.");
- }
- }
- }
+ checkOtherMaster(bMList);
}
et.commit();
} catch (Exception e) {
}
}
+ private void checkOtherMaster(List<?> bMList) {
+ // Check for other Master(s)
+ ArrayList<BackUpMonitorEntity> masterEntities = new ArrayList<>();
+ // Check for self.
+ BackUpMonitorEntity selfEntity = null;
+ // Check backup monitor entities.
+ for (int i = 0; i < bMList.size(); i++) {
+ BackUpMonitorEntity bMEntity = (BackUpMonitorEntity) bMList.get(i);
+ LOGGER.info("Refreshing Entity. ");
+ em.refresh(bMEntity);
+ if (bMEntity.getFlag().equalsIgnoreCase(MASTER)) {
+ masterEntities.add(bMEntity);
+ }
+ if (bMEntity.getResourceName().equals(resourceName)) {
+ selfEntity = bMEntity;
+ }
+ }
+ if (selfEntity != null) {
+ LOGGER.info("Resource Name already Exists: " + resourceName);
+ if (selfEntity.getFlag().equalsIgnoreCase(MASTER)) {
+ // Already Master Mode.
+ setFlag(true);
+ LOGGER.info(resourceName + " is on Master Mode");
+ selfEntity.setTimeStamp(new Date());
+ selfEntity.setNotificationRecord(notificationRecord);
+ em.persist(selfEntity);
+ em.flush();
+ setLastNotification(null);
+ if (!masterEntities.contains(selfEntity)) {
+ masterEntities.add(selfEntity);
+ }
+ } else {
+ // Already Slave Mode.
+ setFlag(false);
+ selfEntity.setTimeStamp(new Date());
+ selfEntity.setNotificationRecord(notificationRecord);
+ em.persist(selfEntity);
+ em.flush();
+ LOGGER.info(resourceName + " is on Slave Mode");
+ }
+ } else {
+ // Resource name is null -> No resource with same name.
+ selfEntity = new BackUpMonitorEntity();
+ selfEntity.setResourceNodeName(resourceNodeName);
+ selfEntity.setResourceName(resourceName);
+ selfEntity.setTimeStamp(new Date());
+ selfEntity = setSlave(selfEntity);
+ setLastNotification(null);
+ LOGGER.info("Creating: " + resourceName + " on Slave Mode");
+ em.persist(selfEntity);
+ em.flush();
+ }
+ // Correct the database if any errors and perform monitor checks.
+ if (masterEntities.size() != 1 || !getFlag()) {
+ // We are either not master or there are more masters or no masters.
+ if (masterEntities.isEmpty()) {
+ // No Masters is a problem Convert ourselves to Master.
+ selfEntity = setMaster(selfEntity);
+ selfEntity.setTimeStamp(new Date());
+ selfEntity.setNotificationRecord(notificationRecord);
+ LOGGER.info(resourceName + " changed to Master Mode - No Masters available.");
+ em.persist(selfEntity);
+ em.flush();
+ } else {
+ if (masterEntities.size() > 1) {
+ masterEntities = multipleMasterEntity(masterEntities);
+ }
+ if (masterEntities.size() == 1) {
+ singleMasterEntity(masterEntities, selfEntity);
+ } else {
+ LOGGER.error(
+ "Backup Monitor Issue, Masters out of sync, This will be fixed in next interval.");
+ }
+ }
+ }
+ }
+
+ private void singleMasterEntity(ArrayList<BackUpMonitorEntity> masterEntities, BackUpMonitorEntity selfEntity) {
+ // Correct Size, Check if Master is Latest, if not Change Master to Slave and Slave to
+ // Master.
+ BackUpMonitorEntity masterEntity = masterEntities.get(0);
+ if (!masterEntity.getResourceName().equals(selfEntity.getResourceName())) {
+ Date currentTime = new Date();
+ long timeDiff;
+ timeDiff = currentTime.getTime() - masterEntity.getTimeStamp().getTime();
+ if (timeDiff > (pingInterval + 1500)) {
+ // This is down or has an issue and we need to become Master while turning the
+ // Master to slave.
+ masterEntity.setFlag(SLAVE);
+ String lastNotification = null;
+ if (masterEntity.getNotificationRecord() != null) {
+ lastNotification = calculatePatch(masterEntity.getNotificationRecord());
+ }
+ setLastNotification(lastNotification);
+ em.persist(masterEntity);
+ em.flush();
+ // Lets Become Master.
+ selfEntity = setMaster(selfEntity);
+ LOGGER.info("Changing " + resourceName + " from slave to Master Mode");
+ selfEntity.setTimeStamp(new Date());
+ selfEntity.setNotificationRecord(notificationRecord);
+ em.persist(selfEntity);
+ em.flush();
+ }
+ }
+ }
+
+ private ArrayList<BackUpMonitorEntity> multipleMasterEntity(ArrayList<BackUpMonitorEntity> masterEntities) {
+ // More Masters is a problem, Fix the issue by looking for the latest one and make others
+ // Slave.
+ BackUpMonitorEntity masterEntity = null;
+ for (BackUpMonitorEntity currentEntity : masterEntities) {
+ if (currentEntity.getFlag().equalsIgnoreCase(MASTER)) {
+ if (masterEntity == null) {
+ masterEntity = currentEntity;
+ } else if (currentEntity.getTimeStamp().getTime() > masterEntity.getTimeStamp()
+ .getTime()) {
+ // False Master, Update master to slave and take currentMaster as Master.
+ masterEntity.setFlag(SLAVE);
+ masterEntity.setTimeStamp(new Date());
+ em.persist(masterEntity);
+ em.flush();
+ masterEntity = currentEntity;
+ } else {
+ currentEntity.setFlag(SLAVE);
+ currentEntity.setTimeStamp(new Date());
+ em.persist(currentEntity);
+ em.flush();
+ }
+ }
+ }
+ masterEntities = new ArrayList<>();
+ masterEntities.add(masterEntity);
+ return masterEntities;
+ }
+
private static void setNotificationRecord() throws BackUpMonitorException {
try {
notificationRecord = PolicyUtils.objectToJsonString(NotificationStore.getNotificationRecord());
LOGGER.error("Error generating Patched " + e.getMessage(), e);
return null;
}
- }
+ }
- /**
+ /**
* Updates Notification in the Database while Performing the health check.
*
* @param notification
} catch (Exception e) {
LOGGER.error("Error in Clients Handler Object : " + e.getMessage(), e);
}
-
- }
- // Used to set LastMasterNotification Record.
+ }
+
+ // Used to set LastMasterNotification Record.
private static void setLastNotification(String notification) {
synchronized (notificationLock) {
lastMasterNotification = notification;
Code Review / policy / engine.git / blobdiff