overleaf/services/web/app/coffee/infrastructure/Monitor/MongoDB.coffee

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2014-02-12 10:23:40 +00:00
Connection = require("mongoose/node_modules/mongodb/lib/mongodb/connection/connection").Connection
MongoReply = require("mongoose/node_modules/mongodb/lib/mongodb/responses/mongo_reply").MongoReply
Metrics = require("../Metrics")
logger = require "logger-sharelatex"
_ = require("underscore")
connectionMonitor =
newConnection: (id, db) ->
Metrics.inc "mongo-requests"
@connections[id] =
timer: new Metrics.Timer("mongo-request-times")
db: db
start: new Date()
setTimeout (=> @connectionDone(id)), 60000
connectionDone: (id) ->
queryIsNoise = (query)->
isNoise = false
if query? && _.isObject(query)
keys = _.keys(query)
if keys[0] == "ismaster" or keys[0] == "ping"
isNoise = true
return isNoise
logItOut = (db)->
logger.log
request_id: db.requestId,
query: db.query,
collection: db.collectionName,
"response-time": new Date() - start
"mongo request"
if @connections[id]?
@connections[id].timer.done()
db = @connections[id].db
start = @connections[id].start
if !queryIsNoise(db.query)
logItOut(db)
delete @connections[id]
connections: {}
monkeyPatchMongo = () ->
write = Connection::write
Connection::write = (db) ->
write.apply(this, arguments)
connectionMonitor.newConnection db.requestId, db
parseHeader = MongoReply::parseHeader
MongoReply::parseHeader = () ->
parseHeader.apply this, arguments
connectionMonitor.connectionDone this.responseTo
module.exports.monitor = monkeyPatchMongo