/**
* Return Stats of a particular Database in mongo to which user is connected to.
*
* @param dbName Name of Database
* @return Array of JSON Objects each containing a key value pair in Db Stats.
* @throws JSONException While parsing JSON
* @throws DatabaseException Error while performing this operation
* @throws ValidationException throw super type of EmptyDatabaseNameException
*/
public JSONArray getDbStats(String dbName)
throws DatabaseException, ValidationException, JSONException {
if (dbName == null) {
throw new DatabaseException(ErrorCodes.DB_NAME_EMPTY, "Database name is null");
}
if (dbName.equals("")) {
throw new DatabaseException(ErrorCodes.DB_NAME_EMPTY, "Database Name Empty");
}
JSONArray dbStats = new JSONArray();
try {
List<String> dbList = getDbList();
boolean dbPresent = dbList.contains(dbName);
if (!dbPresent) {
throw new DatabaseException(
ErrorCodes.DB_DOES_NOT_EXISTS, "DB with name '" + dbName + "' DOES NOT EXIST");
}
MongoDatabase db = mongoInstance.getDatabase(dbName);
Document stats = db.runCommand(new Document("dbStats", "1"));
Set<String> keys = stats.keySet();
Iterator<String> keyIterator = keys.iterator();
while (keyIterator.hasNext()) {
JSONObject temp = new JSONObject();
String key = keyIterator.next();
temp.put("Key", key);
String value = stats.get(key).toString();
temp.put("Value", value);
String type = stats.get(key).getClass().toString();
temp.put("Type", type.substring(type.lastIndexOf('.') + 1));
dbStats.put(temp);
}
} catch (MongoException m) {
throw new DatabaseException(ErrorCodes.GET_DB_STATS_EXCEPTION, m.getMessage());
}
return dbStats;
}
