hnhzServer/node_modules/memdb-server/sample/mdbgoose.js

// Copyright 2015 The MemDB Authors.
//
// 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. See the AUTHORS file
// for names of contributors.

'use strict';

// Add the following index config in memdb.conf.js and restart memdbcluster
//
// collections : {
//     player : {
//         indexes : [
//             {
//                 keys : ['areaId'],
//                 valueIgnore : {
//                     areaId : ['', -1],
//                 },
//             },
//             {
//                 keys : ['deviceType', 'deviceId'],
//                 unique : true,
//             },
//         ]
//     }
// },

// npm install memdb-client
// run with node >= 0.12 with --harmony option

// We assume you have started shard 's1' on localhost:31017

var memdb = require('memdb-client');
var P = memdb.Promise;
var mdbgoose = memdb.goose;

// Define player schema
var playerSchema = new mdbgoose.Schema({
    _id : String,
    name : String,
    areaId : Number,
    deviceType : Number,
    deviceId : String,
    items : [mdbgoose.SchemaTypes.Mixed],
}, {collection : 'player'});
// Define player model
var Player = mdbgoose.model('player', playerSchema);

var main = P.coroutine(function*(){
    // Connect to memdb
    yield mdbgoose.connectAsync({
        shards : { // specify all shards here
            s1 : {host : '127.0.0.1', port: 31017},
            s2 : {host : '127.0.0.1', port: 31018},
        }
    });

    // Make a transaction in s1
    yield mdbgoose.transactionAsync(P.coroutine(function*(){

        var player = new Player({
            _id : 'p1',
            name: 'rain',
            areaId : 1,
            deviceType : 1,
            deviceId : 'id1',
            items : [],
        });

        // insert a player
        yield player.saveAsync();

        // find player by id
        var doc = yield Player.findByIdAsync('p1');
        console.log('%j', doc);

        // find player by areaId, return array of players
        var docs = yield Player.findAsync({areaId : 1});
        console.log('%j', docs);

        // find player by deviceType and deviceId
        player = yield Player.findOneAsync({deviceType : 1, deviceId : 'id1'});

        // update player
        player.areaId = 2;
        yield player.saveAsync();

        // remove the player
        yield player.removeAsync();

    }), 's1');
});

if (require.main === module) {
    main().finally(process.exit);
}