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;
}
private void removeStaleVersionedDbConfiguration() {
String configKind =
_coordinator.getVersionedDbConfigPath(_serviceInfo.getName(), _serviceInfo.getVersion());
List<Configuration> configs =
_coordinator.queryAllConfiguration(_coordinator.getSiteId(), configKind);
for (Configuration config : configs) {
if (isStaleConfiguration(config)) {
_coordinator.removeServiceConfiguration(_coordinator.getSiteId(), config);
_log.info("Remove stale version db config, id: {}", config.getId());
}
}
}
private void removeStaleServiceConfiguration() {
boolean isGeoDBSvc = isGeoDbsvc();
boolean resetAutoBootFlag = false;
String configKind = _coordinator.getDbConfigPath(_serviceInfo.getName());
List<Configuration> configs =
_coordinator.queryAllConfiguration(_coordinator.getSiteId(), configKind);
for (Configuration config : configs) {
if (isStaleConfiguration(config)) {
boolean autoboot = Boolean.parseBoolean(config.getConfig(DbConfigConstants.AUTOBOOT));
String configId = config.getId();
if (isGeoDBSvc && !autoboot && (configId.equals("geodb-4") || configId.equals("geodb-5"))) {
// for geodbsvc, if restore with the backup of 5 nodes to 3 nodes and the backup is made
// on the cluster that the 'autoboot=false' is set on vipr4 or vipr5
// we should set the autoboot=false on the current node or no node with autoboot=false
// TODO:This is a temporary/safest solution in Yoda, we'll provide a better soltuion post
// Yoda
resetAutoBootFlag = true;
}
if (isStaleConfiguration(config)) {
_coordinator.removeServiceConfiguration(_coordinator.getSiteId(), config);
_log.info("Remove stale db config, id: {}", config.getId());
}
}
}
if (resetAutoBootFlag) {
_log.info("set autoboot flag to false on {}", _serviceInfo.getId());
Configuration config =
_coordinator.queryConfiguration(
_coordinator.getSiteId(), configKind, _serviceInfo.getId());
config.setConfig(DbConfigConstants.AUTOBOOT, Boolean.FALSE.toString());
_coordinator.persistServiceConfiguration(_coordinator.getSiteId(), config);
}
}
/**
* We select seeds based on the following rules - For DR standby sites, use all nodes in active
* site as seeds For DR active site, use local nodes as seeds. The rule to select local seed is -
* first boot node(AUTOBOOT = false) uses itself as seed nodes so that it could boot and
* initialize schema - subsquent node(AUTOBOOT = true) uses other successfully booted(JOINED =
* true) nodes as seeds
*/
@Override
public List<InetAddress> getSeeds() {
try {
CoordinatorClientInetAddressMap nodeMap = _client.getInetAddessLookupMap();
List<Configuration> configs =
_client.queryAllConfiguration(_client.getSiteId(), Constants.DB_CONFIG);
List<InetAddress> seeds = new ArrayList<>();
// If we are upgrading from pre-2.5 releases, dbconfig exists in zk global area
List<Configuration> leftoverConfig = _client.queryAllConfiguration(Constants.DB_CONFIG);
configs.addAll(leftoverConfig);
// Add extra seeds - seeds from remote sites
for (String seed : extraSeeds) {
if (StringUtils.isNotEmpty(seed)) {
seeds.add(InetAddress.getByName(seed));
}
}
// On DR standby site, only use seeds from active site. On active site
// we use local seeds
if (isDrActiveSite) {
for (int i = 0; i < configs.size(); i++) {
Configuration config = configs.get(i);
// Bypasses item of "global" and folders of "version", just check db configurations.
if (config.getId() == null || config.getId().equals(Constants.GLOBAL_ID)) {
continue;
}
String nodeIndex = config.getId().split("-")[1];
String nodeId = config.getConfig(DbConfigConstants.NODE_ID);
if (nodeId == null) {
// suppose that they are existing znodes from a previous version
// set the NODE_ID config, id is like db-x
nodeId = "vipr" + nodeIndex;
config.setConfig(DbConfigConstants.NODE_ID, nodeId);
config.removeConfig(DbConfigConstants.DB_IP);
_client.persistServiceConfiguration(_client.getSiteId(), config);
}
if (!Boolean.parseBoolean(config.getConfig(DbConfigConstants.AUTOBOOT))
|| (!config.getId().equals(_id)
&& Boolean.parseBoolean(config.getConfig(DbConfigConstants.JOINED)))) {
// all non autobootstrap nodes + other nodes are used as seeds
InetAddress ip = null;
if (nodeMap != null) {
String ipAddress = nodeMap.getConnectableInternalAddress(nodeId);
_logger.debug("ip[" + i + "]: " + ipAddress);
ip = InetAddress.getByName(ipAddress);
} else {
ip = InetAddress.getByName(nodeId);
}
seeds.add(ip);
_logger.info("Seed {}", ip);
}
}
}
_logger.info("Seeds list {}", StringUtils.join(seeds.toArray(), ","));
return seeds;
} catch (Exception e) {
throw new IllegalStateException(e);
}
}