/**
* Copies entries from an existing environment db to a new one. If historyMap is not provided,
* only logs the entries that would have been copied.
*
* @param sourceDir existing environment database directory
* @param historyMap new environment db (or null for a dry run)
* @return number of records
* @throws DatabaseException
*/
private static int copyPersistEnv(File sourceDir, StoredSortedMap<String, Map> historyMap)
throws DatabaseException {
int count = 0;
// open the source env history DB, copying entries to target env
EnhancedEnvironment sourceEnv = setupCopyEnvironment(sourceDir, true);
StoredClassCatalog sourceClassCatalog = sourceEnv.getClassCatalog();
DatabaseConfig historyDbConfig = HISTORY_DB_CONFIG.toDatabaseConfig();
historyDbConfig.setReadOnly(true);
Database sourceHistoryDB = sourceEnv.openDatabase(null, URI_HISTORY_DBNAME, historyDbConfig);
StoredSortedMap<String, Map> sourceHistoryMap =
new StoredSortedMap<String, Map>(
sourceHistoryDB,
new StringBinding(),
new SerialBinding<Map>(sourceClassCatalog, Map.class),
true);
Iterator<Entry<String, Map>> iter = sourceHistoryMap.entrySet().iterator();
while (iter.hasNext()) {
Entry<String, Map> item = iter.next();
if (logger.isLoggable(Level.FINE)) {
logger.fine(item.getKey() + " " + new JSONObject(item.getValue()));
}
if (historyMap != null) {
historyMap.put(item.getKey(), item.getValue());
}
count++;
}
StoredIterator.close(iter);
sourceHistoryDB.close();
sourceEnv.close();
return count;
}
/**
* Populates a new environment db from an old environment db or a persist log. If path to new
* environment is not provided, only logs the entries that would have been populated.
*
* @param sourcePath source of old entries: can be a path to an existing environment db, or a URL
* or path to a persist log
* @param envFile path to new environment db (or null for a dry run)
* @return number of records
* @throws DatabaseException
* @throws IOException
*/
public static int populatePersistEnv(String sourcePath, File envFile) throws IOException {
int count = 0;
StoredSortedMap<String, Map> historyMap = null;
EnhancedEnvironment targetEnv = null;
StoredClassCatalog classCatalog = null;
Database historyDB = null;
if (envFile != null) {
// set up target environment
FileUtils.ensureWriteableDirectory(envFile);
targetEnv = setupCopyEnvironment(envFile);
classCatalog = targetEnv.getClassCatalog();
historyDB =
targetEnv.openDatabase(null, URI_HISTORY_DBNAME, HISTORY_DB_CONFIG.toDatabaseConfig());
historyMap =
new StoredSortedMap<String, Map>(
historyDB,
new StringBinding(),
new SerialBinding<Map>(classCatalog, Map.class),
true);
}
try {
count = copyPersistSourceToHistoryMap(new File(sourcePath), historyMap);
} finally {
// in finally block so that we unlock the target env even if we
// failed to populate it
if (envFile != null) {
logger.info(count + " records imported from " + sourcePath + " to BDB env " + envFile);
historyDB.sync();
historyDB.close();
targetEnv.close();
} else {
logger.info(count + " records found in " + sourcePath);
}
}
return count;
}