private boolean isStaleConfiguration(Configuration config) {
String delimiter = "-";
String configId = config.getId();
// Bypasses item of "global" and folders of "version", just check db configurations.
if (configId == null || configId.equals(Constants.GLOBAL_ID) || !configId.contains(delimiter)) {
return false;
}
if (_serviceInfo.getId().endsWith(Constants.STANDALONE_ID)) {
if (!configId.equals(_serviceInfo.getId())) {
return true;
}
} else {
CoordinatorClientInetAddressMap nodeMap = _coordinator.getInetAddessLookupMap();
int nodeCount = nodeMap.getControllerNodeIPLookupMap().size();
String nodeIndex = configId.split(delimiter)[1];
if (Constants.STANDALONE_ID.equalsIgnoreCase(nodeIndex)
|| Integer.parseInt(nodeIndex) > nodeCount) {
return true;
}
}
return false;
}
/** Check offline event info to see if dbsvc/geodbsvc on this node could get started */
private void checkDBOfflineInfo() {
Configuration config =
_coordinator.queryConfiguration(
_coordinator.getSiteId(), Constants.DB_DOWNTIME_TRACKER_CONFIG, _serviceInfo.getName());
DbOfflineEventInfo dbOfflineEventInfo = new DbOfflineEventInfo(config);
String localNodeId = _coordinator.getInetAddessLookupMap().getNodeId();
Long lastActiveTimestamp = dbOfflineEventInfo.geLastActiveTimestamp(localNodeId);
long zkTimeStamp =
(lastActiveTimestamp == null) ? TimeUtils.getCurrentTime() : lastActiveTimestamp;
File localDbDir = new File(dbDir);
Date lastModified = getLastModified(localDbDir);
boolean isDirEmpty = lastModified == null || localDbDir.list().length == 0;
long localTimeStamp = (isDirEmpty) ? TimeUtils.getCurrentTime() : lastModified.getTime();
_log.info("Service timestamp in ZK is {}, local file is: {}", zkTimeStamp, localTimeStamp);
long diffTime = (zkTimeStamp > localTimeStamp) ? (zkTimeStamp - localTimeStamp) : 0;
if (diffTime >= MAX_SERVICE_OUTAGE_TIME) {
String errMsg =
String.format(
"We detect database files on local disk are more than %s days older "
+ "than last time it was seen in the cluster. It may bring stale data into the database, "
+ "so the service cannot continue to boot. It may be the result of a VM snapshot rollback. "
+ "Please contact with EMC support engineer for solution.",
diffTime / TimeUtils.DAYS);
alertLog.error(errMsg);
throw new IllegalStateException(errMsg);
}
Long offlineTime = dbOfflineEventInfo.getOfflineTimeInMS(localNodeId);
if (!isDirEmpty && offlineTime != null && offlineTime >= MAX_SERVICE_OUTAGE_TIME) {
String errMsg =
String.format(
"This node is offline for more than %s days. It may bring stale data into "
+ "database, so the service cannot continue to boot. Please poweroff this node and follow our "
+ "node recovery procedure to recover this node",
offlineTime / TimeUtils.DAYS);
alertLog.error(errMsg);
throw new IllegalStateException(errMsg);
}
}
/**
* Checks and registers db configuration information, this is one time when cluster is coming up
* for the first time
*/
private Configuration checkConfiguration() {
String configKind = _coordinator.getDbConfigPath(_serviceInfo.getName());
Configuration config =
_coordinator.queryConfiguration(_coordinator.getSiteId(), configKind, _serviceInfo.getId());
if (config == null) {
// check if it is upgraded from previous version to yoda - configuration may be stored in
// zk global area /config. Since SeedProvider still need access that, so we remove the config
// from global in migration callback after migration is done.
config = _coordinator.queryConfiguration(configKind, _serviceInfo.getId());
if (config != null) {
_log.info("Upgrade from pre-yoda release, move dbconfig to new location");
_coordinator.persistServiceConfiguration(_coordinator.getSiteId(), config);
return config;
}
// this is a new node
// 1. register its configuration with coordinator
// 2. assume autobootstrap configuration
// this means that when a node is added, it take 1/2 of biggest token rage and
// copies its data over
ConfigurationImpl cfg = new ConfigurationImpl();
cfg.setId(_serviceInfo.getId());
cfg.setKind(configKind);
cfg.setConfig(DbConfigConstants.NODE_ID, _coordinator.getInetAddessLookupMap().getNodeId());
cfg.setConfig(DbConfigConstants.AUTOBOOT, Boolean.TRUE.toString());
// check other existing db nodes
List<Configuration> configs =
_coordinator.queryAllConfiguration(_coordinator.getSiteId(), configKind);
if (configs.isEmpty()) {
// we are the first node - turn off autobootstrap
cfg.setConfig(DbConfigConstants.AUTOBOOT, Boolean.FALSE.toString());
}
// persist configuration
_coordinator.persistServiceConfiguration(_coordinator.getSiteId(), cfg);
config = cfg;
}
return config;
}
