/*
* Copyright (c) 2011 Imaginea Technologies Private Ltd.
* Hyderabad, India
*
* 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.imaginea.mongodb.controllers;
import com.imaginea.mongodb.exceptions.DatabaseException;
import com.imaginea.mongodb.exceptions.ErrorCodes;
import com.imaginea.mongodb.services.AuthService;
import com.imaginea.mongodb.services.CollectionService;
import com.imaginea.mongodb.services.DatabaseService;
import com.imaginea.mongodb.services.impl.AuthServiceImpl;
import com.imaginea.mongodb.services.impl.CollectionServiceImpl;
import com.imaginea.mongodb.services.impl.DatabaseServiceImpl;
import com.mongodb.Mongo;
import com.mongodb.MongoException;
import org.apache.log4j.Logger;
import org.json.JSONException;
import javax.servlet.http.HttpServletRequest;
import javax.ws.rs.*;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
/**
* Defines resources for getting statistics of mongo Server and statistics of a
* particualr database present in mongo and statistics of a collection present
* inside a database.
* <p/>
* The resources also form a error JSON response when any exception occur while
* performing the operation.
*
* @author Rachit Mittal
* @since 7 July 2011
*/
@Path("/stats")
public class StatisticsController extends BaseController {
private final static Logger logger = Logger.getLogger(StatisticsController.class);
private AuthService authService = AuthServiceImpl.getInstance();
/**
* Default Constructor
*/
public StatisticsController() {
}
/**
* Get Statistics of Mongo Server.
*
* @param connectionId Mongo Db Configuration provided by user to connect to.
* @param request Get the HTTP request context to extract session parameters
* @return String of JSON Format with server Stats.
*/
@GET
@Produces(MediaType.APPLICATION_JSON)
public String getServerStats(@QueryParam("connectionId") final String connectionId, @Context final HttpServletRequest request) throws JSONException {
String response = new ResponseTemplate().execute(logger, connectionId, request, new ResponseCallback() {
public Object execute() throws Exception {
Mongo mongoInstance = authService.getMongoInstance(connectionId);
// Get Server Stats
try {
return mongoInstance.getDB("admin").command("serverStatus");
} catch (MongoException e) {
throw new DatabaseException(ErrorCodes.GET_DB_STATS_EXCEPTION, e.getMessage());
}
}
});
return response;
}
/**
* GET Statistics of a particular database.
*
* @param dbName : Name of Database for which to get DbStats.
* @param connectionId Mongo Db Configuration provided by user to connect to.
* @return : String of JSON Format with Db Stats.
*/
@GET
@Path("/db/{dbName}")
@Produces(MediaType.APPLICATION_JSON)
public String getDbStats(@PathParam("dbName") final String dbName, @QueryParam("connectionId") final String connectionId, @Context final HttpServletRequest request) throws JSONException {
String response = new ResponseTemplate().execute(logger, connectionId, request, new ResponseCallback() {
public Object execute() throws Exception {
DatabaseService databaseService = new DatabaseServiceImpl(connectionId);
return databaseService.getDbStats(dbName);
}
});
return response;
}
/**
* GET Statistics of Collections in a Database present in mongo.
*
* @param dbName : Name of Database
* @param collectionName : Name of Collection
* @param request : Get the HTTP request context to extract session parameters
* @param connectionId Mongo Db Configuration provided by user to connect to.
* @return : A String of JSON Format with key <result> and value Collection
* Stats.
*/
@GET
@Path("/db/{dbName}/collection/{collectionName}")
@Produces(MediaType.APPLICATION_JSON)
public String getCollStats(@PathParam("dbName") final String dbName, @PathParam("collectionName") final String collectionName, @QueryParam("connectionId") final String connectionId,
@Context final HttpServletRequest request) throws JSONException {
String response = new ResponseTemplate().execute(logger, connectionId, request, new ResponseCallback() {
public Object execute() throws Exception {
CollectionService collectionService = new CollectionServiceImpl(connectionId);
// Get the result;
return collectionService.getCollStats(dbName, collectionName);
}
});
return response;
}
}