/**
* Check startup mode on disk. Startup mode is specified by a property file on disk
* ${dbdir}/startupmode
*
* @param config The Confiugration instance
* @return BootMode instance if detected, null for no on-disk startup mode
*/
private StartupMode checkStartupModeOnDisk(Configuration config) throws IOException {
String modeType = readStartupModeFromDisk();
if (modeType != null) {
if (Constants.STARTUPMODE_HIBERNATE.equalsIgnoreCase(modeType)) {
HibernateMode mode = new HibernateMode(config);
mode.setCoordinator(_coordinator);
mode.setSchemaUtil(_schemaUtil);
mode.setDbDir(dbDir);
return mode;
} else if (Constants.STARTUPMODE_RESTORE_REINIT.equalsIgnoreCase(modeType)) {
_log.info(
"GeodbRestore startup mode found. Current vdc list {}",
_schemaUtil.getVdcList().size());
if (isGeoDbsvc() && _schemaUtil.getVdcList().size() > 1) {
GeodbRestoreMode mode = new GeodbRestoreMode(config);
mode.setCoordinator(_coordinator);
mode.setSchemaUtil(_schemaUtil);
mode.setDbDir(dbDir);
return mode;
}
} else {
throw new IllegalStateException("Unexpected startup mode " + modeType);
}
}
return null;
}
/**
* Determine current startup mode. See BootMode for detailed explanation of each mode.
*
* @param config
* @return
*/
private StartupMode checkStartupMode(Configuration config) throws IOException {
// Check on disk mode first
StartupMode bootMode = checkStartupModeOnDisk(config);
if (bootMode != null) {
return bootMode;
}
// Check geodb restore flag in zk
if (checkConfigBool(config, Constants.STARTUPMODE_RESTORE_REINIT)) {
_log.info("Found geodbrestore config: {}", Constants.STARTUPMODE_RESTORE_REINIT);
GeodbRestoreMode mode = new GeodbRestoreMode(config);
mode.setCoordinator(_coordinator);
mode.setSchemaUtil(_schemaUtil);
mode.setDbDir(dbDir);
return mode;
}
// Check geodb reinit ZK flag for add-vdc
if (checkConfigBool(config, Constants.REINIT_DB)) {
_log.info("Found reinit config: {}", Constants.REINIT_DB);
// reinit both system table and StorageOS tables
DbReinitMode mode = new DbReinitMode(config);
mode.setCoordinator(_coordinator);
mode.setSchemaUtil(_schemaUtil);
mode.setDbDir(dbDir);
return mode;
}
// check geodb cleanup mode for remove-vdc
List<String> obsoletePeers = checkConfigList(config, Constants.OBSOLETE_CASSANDRA_PEERS);
if (!obsoletePeers.isEmpty()) {
// drop peers ip/tokens from system table
ObsoletePeersCleanupMode mode = new ObsoletePeersCleanupMode(config);
mode.setCoordinator(_coordinator);
mode.setSchemaUtil(_schemaUtil);
mode.setObsoletePeers(obsoletePeers);
return mode;
} else {
NormalMode mode = new NormalMode(config);
mode.setCoordinator(_coordinator);
mode.setSchemaUtil(_schemaUtil);
return mode;
}
}