Java tutorial
/** * Copyright (C) 2012 Cardinal Info.Tech.Co.,Ltd. * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License, version 3, * as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package net.cit.tetrad.rrd.dao; import java.util.ArrayList; import java.util.HashMap; import java.util.Iterator; import java.util.List; import java.util.Map; import java.util.Set; import net.cit.tetrad.model.Device; import net.cit.tetrad.rrd.utils.JasonUtil; import org.springframework.dao.DataAccessResourceFailureException; import com.mongodb.BasicDBObject; import com.mongodb.CommandResult; import com.mongodb.DB; import com.mongodb.DBCollection; import com.mongodb.DBCursor; import com.mongodb.DBObject; import com.mongodb.Mongo; import com.mongodb.MongoException; public class MongoStatusToMonitorImpl implements MongoStatusToMonitor { public Map<String, Object> readMongoStatus(Mongo mongo, Device device, String command, String databaseName) throws MongoException, Exception { Map<String, Object> deviceStatus = new HashMap<String, Object>(); try { DB db = mongo.getDB(databaseName); CommandResult commandResult = db.command(command); deviceStatus = JasonUtil.getEntryValue(commandResult, "", deviceStatus); } catch (DataAccessResourceFailureException e) { e.printStackTrace(); throw new MongoException(e.getMessage()); } catch (MongoException e) { // alarm ? e.printStackTrace(); throw e; } catch (Exception e) { e.printStackTrace(); throw e; } finally { } return deviceStatus; } public List<Object> readMongoShards(Mongo mongo, String collection, String databaseName) throws MongoException, Exception { List<Object> dboLst = new ArrayList<Object>(); try { DB db = mongo.getDB(databaseName); DBCollection dbcollection = db.getCollectionFromString(collection); DBCursor cr = dbcollection.find(); Iterator<DBObject> it = cr.iterator(); DBObject dbo; while (it.hasNext()) { dbo = it.next(); Map<String, Object> deviceStatus = new HashMap<String, Object>(); deviceStatus = JasonUtil.getEntryValue(dbo, "", deviceStatus); dboLst.add(deviceStatus); } } catch (DataAccessResourceFailureException e) { e.printStackTrace(); throw new MongoException(e.getMessage()); } catch (MongoException e) { e.printStackTrace(); throw e; } catch (Exception e) { e.printStackTrace(); throw e; } finally { } return dboLst; } public List<Object> readMongoChunksGrp(Mongo mongo, String collName, List<Object> dboLst) throws MongoException, Exception { try { DB db = mongo.getDB("config"); DBCollection dbcollection = db.getCollectionFromString("chunks"); DBObject dbo = dbcollection.group(new BasicDBObject("shard", true), new BasicDBObject("ns", collName), new BasicDBObject("nChunks", 0), "function (doc, out) {out.nChunks++;}"); Iterator<String> keys = dbo.keySet().iterator(); BasicDBObject getDbo; while (keys.hasNext()) { String key = keys.next(); getDbo = (BasicDBObject) dbo.get(key); getDbo.put("collName", collName); dboLst.add(getDbo); } } catch (DataAccessResourceFailureException e) { e.printStackTrace(); throw new MongoException(e.getMessage()); } catch (MongoException e) { e.printStackTrace(); throw e; } catch (Exception e) { e.printStackTrace(); throw e; } finally { } return dboLst; } public Set<String> readMongoCollectionName(Mongo mongo, String dbName) throws MongoException, Exception { Set<String> collNameLst = null; try { DB db = mongo.getDB(dbName); collNameLst = db.getCollectionNames(); } catch (DataAccessResourceFailureException e) { e.printStackTrace(); throw new MongoException(e.getMessage()); } catch (MongoException e) { e.printStackTrace(); throw e; } catch (Exception e) { e.printStackTrace(); throw e; } finally { } return collNameLst; } public CommandResult getCommandResult(Mongo mongo, Device device, String command, String databaseName) throws MongoException, Exception { CommandResult commandResult = null; try { DB db = mongo.getDB(databaseName); commandResult = db.command(command); } catch (DataAccessResourceFailureException e) { e.printStackTrace(); throw new MongoException(e.getMessage()); } catch (MongoException e) { // alarm ? e.printStackTrace(); throw e; } catch (Exception e) { e.printStackTrace(); throw e; } finally { } return commandResult; } public Map<String, Object> readMongoStatus(Mongo mongo, Device device, String command) throws MongoException, Exception { return readMongoStatus(mongo, device, command, "admin"); } public String getAllServerStatus(Mongo mongo, Device device, String command, String databaseName) throws MongoException, Exception { String objtoString; try { DB db = mongo.getDB(databaseName); CommandResult commandResult = db.command(command); objtoString = commandResult.toString(); } catch (DataAccessResourceFailureException e) { e.printStackTrace(); throw new MongoException(e.getMessage()); } catch (MongoException e) { // alarm ? e.printStackTrace(); throw e; } catch (Exception e) { e.printStackTrace(); throw e; } finally { } return objtoString; } public String getAllServerStatus(Mongo mongo, Device device) throws MongoException, Exception { return getAllServerStatus(mongo, device, "serverStatus", "admin"); } }