Java tutorial
/** * Copyright (C) 2010 EdgyTech LLC. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.edgytech.umongo; import com.edgytech.swingfast.XmlUnit; import com.mongodb.*; import java.util.ArrayList; import java.util.List; import java.util.logging.Level; import javax.swing.ImageIcon; /** * * @author antoine */ public class MongoNode extends BaseTreeNode { MongoClient mongo; boolean specifiedDb; List<String> dbs; public MongoNode(MongoClient mongo, List<String> dbs) { this.mongo = mongo; this.dbs = dbs; this.specifiedDb = dbs != null; try { xmlLoad(Resource.getXmlDir(), Resource.File.mongoNode, null); } catch (Exception ex) { getLogger().log(Level.SEVERE, null, ex); } markStructured(); } public MongoClient getMongoClient() { return mongo; } @Override protected void populateChildren() { // first ask list of db, will also trigger discovery of nodes List<String> dbnames = new ArrayList<String>(); try { dbnames = mongo.getDatabaseNames(); } catch (Exception e) { getLogger().log(Level.WARNING, e.getMessage(), e); } List<ServerAddress> addrs = mongo.getServerAddressList(); if (addrs.size() <= 1) { // check if mongos boolean added = false; ServerAddress addr = addrs.get(0); ServerNode node = new ServerNode(mongo, false, false); try { CommandResult res = node.getServerDB().command("isdbgrid"); if (res.ok()) { addChild(new RouterNode(addr, mongo)); added = true; } } catch (Exception e) { getLogger().log(Level.INFO, e.getMessage(), e); } if (mongo.getReplicaSetStatus() != null) { // could be replset of 1, check try { CommandResult res = node.getServerDB().command(new BasicDBObject("isMaster", 1), mongo.getOptions()); if (res.containsField("setName")) { addChild(new ReplSetNode(mongo.getReplicaSetStatus().getName(), mongo, null)); added = true; } } catch (Exception e) { getLogger().log(Level.INFO, e.getMessage(), e); } } if (!added) addChild(node); } else { addChild(new ReplSetNode(mongo.getReplicaSetStatus().getName(), mongo, null)); } if (specifiedDb) { // user specified list of DB dbnames = dbs; } else { dbs = dbnames; if (dbnames.isEmpty()) { // could not get any dbs, add test at least dbnames.add("test"); } } if (dbnames != null) { // get all DBs to populate map for (String dbname : dbnames) { addChild(new DbNode(mongo.getDB(dbname))); } } } @Override protected void updateNode() { label = "Mongo: ?"; // following op may fail, e.g. if SSL is broken label = "Mongo: " + mongo.getConnectPoint(); } @Override protected void refreshNode() { // do dummy command to pick up exception mongo.getDatabaseNames(); } BasicDBList getShards() { XmlUnit child = getChild(0); if (child instanceof RouterNode) { return ((RouterNode) child).getShards(); } return null; } String[] getShardNames() { XmlUnit child = getChild(0); if (child instanceof RouterNode) { return ((RouterNode) child).getShardNames(); } return null; } List<DBObject> summarizeData() { List<DBObject> global = new ArrayList<DBObject>(); for (DbNode node : getChildrenOfClass(DbNode.class)) { List<DBObject> res = node.summarizeData(); global.addAll(res); } return global; } }