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shipr-provider.js
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shipr-provider.js
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var mongo = require('mongodb');
ShiprProvider = function(host,app,server) {
// var self = this
// this.db = new Db('shipr',
// new Server(host,port,{auto_reconnect: true}),{safe:true})
// this.db.open(function() {
// console.log('[+] Shipr successfully connected to MongoDB!')
// console.log('[~] Deploying application...')
// app.listen(app_port,function() {
// console.log('[+] Shipr is deployed on localhost:' + app.get('port'));
// })
// })
this.db = null
self = this
console.log(' - MongoURI: ' + host)
mongo.Db.connect(host, function(err,db) {
if (err) {
console.log('[-] Error connecting to Mongo: ' + err)
}
self.db = db
console.log('[+] Shipr successfully connected to MongoDB!')
console.log('[~] Deploying application...')
server.listen(app.get('port'),function() {
console.log('[+] Shipr is deployed on port ' + app.get('port'));
setTimeout(function() {
console.log('[~] Testing database...')
app.shiprProvider.db.collection('matches',function(err,matches) {
if (err) { throw err; }
else {
matches.findOne({test:'response'},function(err,res) {
if (err) { throw err; }
else {
if (res != null) {
console.log('[+] Test response received!')
} else {
console.log('[-] Test response failed.')
}
}
})
}
})
},2000)
})
})
}
ShiprProvider.prototype.getMatches = function(callback) {
this.db.collection('matches',function(err,matches) {
if (err) {
console.log(' [-] Error finding matches.')
callback(err)
} else {
callback(null,matches)
}
})
}
ShiprProvider.prototype.getCache = function(callback) {
this.db.collection('cache',function(err,matches) {
if (err) {
console.log(' [-] Error finding cached data.')
callback(err)
} else {
callback(null,matches)
}
})
}
ShiprProvider.prototype.findNetwork = function(uid,callback) {
this.getCache(function(err,cache) {
if (err) {
console.log(' [-] Error when finding network for ' + uid)
} else {
cache.findOne({root:uid},function(err,res) {
if (err) {
console.log(' [-] Error when updating network for ' + uid)
callback(err)
} else {
if (res) {
console.log(' [+] Successfully retrieved network ' + uid + ' (' + res.time + ')')
callback(null,res)
} else {
console.log(' [+] No network found for ' + uid)
callback(null,null)
}
}
})
}
})
}
ShiprProvider.prototype.writeNetwork = function(nw,callback) {
this.getCache(function(err,cache) {
if (err) {
console.log(' [-] Error when updating network for ' + nw.root)
} else {
cache.update({root:nw.root},{$set:{root:nw.root,time:nw.time,adj:nw.adj}},{upsert:true},function(err,res) {
if (err) {
console.log(' [-] Error when updating network for ' + nw.root)
callback(err)
} else {
console.log(' [+] Successfully wrote network ' + nw.root + ' (' + nw.time + ')')
callback(null,nw.time)
}
})
}
})
}
ShiprProvider.prototype.findMatchesByIds = function(idlist,callback) {
this.getMatches(function(err,matches) {
matches.find({$and:[{a:{$in:idlist}},{b:{$in:idlist}}]}).toArray(function(err,res) {
if (err) {
console.log(' [-] Error when reading matches from list.')
callback(err)
} else {
callback(null,res)
}
})
})
}
ShiprProvider.prototype.findMatchesById = function(id1,id2,callback) {
// The second ID will should be greater than the first
if (parseInt(id1) > parseInt(id2)) {
var tmp = id1
id1 = id2
id2 = tmp
}
if (id2 == null) {
this.getMatches(function(err,matches) {
matches.find({$or:[{a:id1},{b:id1}]}).toArray(function(err,res) {
if (err) {
console.log(' [-] Error when reading match(' + id1 + ', * )')
callback(err)
} else {
callback(null,res)
}
})
})
} else {
this.getMatches(function(err,matches) {
matches.findOne({a:id1,b:id2},function(err,res) {
if (err) {
console.log(' [-] Error when reading match(' + id1 + ', * )')
callback(err)
} else {
callback(null,res)
}
})
})
}
}
ShiprProvider.prototype.updateMatchById = function(uid,id1,id2,r,callback) {
// The second ID will should be greater than the first
if (parseInt(id1) > parseInt(id2)) {
var tmp = id1
id1 = id2
id2 = tmp
}
var info = {
a:id1,
b:id2,
up:0,
down:0,
skip:0
}
info[r] = 1
this.getMatches(function(err,matches) {
matches.findOne({a:id1,b:id2},function(err,res) {
if (err) {
console.log(' [-] Error when finding match(' + id1 + ',' + id2 + ',' + r + ')')
callback(err)
} else {
// No entry found...
if (!res || Object.keys(res).length < 5) {
info.voted = {}
info.voted[uid] = r
var msg = 'Voted new pair: (' + id1 + ',' + id2 + ',' + r + ')'
updateEntry(matches,callback,info,id1,id2,r,msg)
// uid is not present...
} else if (!(uid in res.voted)) {
res.voted[uid] = r
info.up += res.up
info.down += res.down
info.skip += res.skip
info.voted = res.voted
info._id = res._id
var msg = 'Vote casted: (' + id1 + ',' + id2 + ',' + r + ')'
updateEntry(matches,callback,info,id1,id2,r,msg)
// uid is present...
} else {
var prevr = res.voted[uid]
if (r != prevr) {
info[prevr] = -1
res.voted[uid] = r
info.up += res.up
info.down += res.down
info.skip += res.skip
info.voted = res.voted
info._id = res._id
var msg = 'Vote updated: (' + id1 + ',' + id2 + ',' + r + ')'
updateEntry(matches,callback,info,id1,id2,r,msg)
} else {
callback(null,'No change.')
}
}
}
})
})
}
function updateEntry(matches,callback,info,id1,id2,r,message) {
matches.save(info,function(err,res) {
if (err) {
console.log(' [-] Error when updating match(' + id1 + ',' + id2 + ') with ' + r)
callback(err)
} else {
callback(null,message)
console.log(' [+] ' + message)
}
})
}
exports.ShiprProvider = ShiprProvider