using mongoexport for s3 archive

services/track-changes/app/coffee/DocArchiveManager.coffee

@@ -1,4 +1,5 @@
 MongoManager = require "./MongoManager"
+MongoAWS = require "./MongoAWS"
 logger = require "logger-sharelatex"
 _ = require "underscore"
 async = require "async"
@@ -21,29 +22,6 @@ module.exports = DocArchiveManager =
 
 
 	archiveDocChanges: (project_id, doc_id, callback)->
-		MongoManager.getDocChanges doc_id, (error, docChanges) ->
-			logger.log project_id: project_id, doc_id: doc_id, "sending doc changes to s3"
-			options = DocArchiveManager.buildS3Options(docChanges, project_id+"/changes-"+doc_id)
-			request.put options, (err, res)->
-				md5lines = crypto.createHash("md5").update(JSON.stringify(docChanges)).digest("hex")
-				md5response = res.headers.etag.toString().replace(/\"/g, '')
-				if err? || res.statusCode != 200
-					logger.err err:err, res:res, "something went wrong archiving doc changes in aws"
-					return callback new Error("Error in S3 request")
-				if md5lines != md5response
-					logger.err responseMD5:md5response, linesMD5:md5lines, "error in response md5 from s3"
-					return callback new Error("Error in S3 md5 response")
-				#MongoManager.markDocAsArchived doc._id, doc.rev, (error) ->
-				#	return callback(error) if error?
+		MongoAWS.archiveDocHistory project_id, doc_id, (error) ->
+			logger.log doc_id:doc_id, error: error, "mongoexport"
 			callback()
-
-	buildS3Options: (content, key)->
-		return {
-				aws:
-					key: settings.filestore.s3.key
-					secret: settings.filestore.s3.secret
-					bucket: settings.filestore.stores.user_files
-				timeout: thirtySeconds
-				json: content
-				uri:"https://#{settings.filestore.stores.user_files}.s3.amazonaws.com/#{key}"
-		}

services/track-changes/app/coffee/MongoAWS.coffee

@@ -0,0 +1,69 @@
+settings = require "settings-sharelatex"
+child_process = require "child_process"
+mongoUri = require "mongo-uri";
+logger = require "logger-sharelatex"
+AWS = require 'aws-sdk'
+fs = require 'fs'
+
+
+module.exports = MongoAWS =
+
+	archiveDocHistory: (project_id, doc_id, callback = (error) ->) ->
+		MongoAWS.mongoDumpDocHistory doc_id, (error,filepath) ->
+			MongoAWS.s3upload project_id, doc_id, filepath, callback
+
+	mongoDumpDocHistory: (doc_id, callback = (error, filepath) ->) ->
+		uriData = mongoUri.parse(settings.mongo.url);
+		filepath = settings.path.dumpFolder + '/' + doc_id + '.json' 
+
+		args = []
+		args.push '-h' 
+		args.push uriData.hosts[0]
+		args.push '-d'
+		args.push uriData.database
+		args.push '-c' 
+		args.push 'docHistory'
+		args.push '-q'
+		args.push "{doc_id: ObjectId('#{doc_id}') }"
+		args.push '-o' 
+		args.push filepath
+
+		proc = child_process.spawn "mongoexport", args
+
+		proc.on "error", callback
+
+		stderr = ""
+		proc.stderr.on "data", (chunk) -> stderr += chunk.toString()
+
+		proc.on "close", (code) ->
+			if code == 0
+				return callback(null,filepath)
+			else
+				return callback(new Error("mongodump failed: #{stderr}"),null)
+
+	s3upload: (project_id, doc_id, filepath, callback = (error) ->) ->
+
+		AWS.config.update {
+			accessKeyId: settings.filestore.s3.key
+			secretAccessKey: settings.filestore.s3.secret
+		}
+
+		s3Stream = require('s3-upload-stream')(new AWS.S3());
+
+		upload = s3Stream.upload {
+		  "Bucket": settings.filestore.stores.user_files,
+		  "Key": project_id+"/changes-"+doc_id
+		}
+
+		read = fs.createReadStream filepath
+
+		#Handle errors.
+		upload.on 'error', callback
+
+		#Handle upload completion.
+		upload.on 'uploaded', (details) ->
+			return callback(null)
+
+		#Pipe the incoming filestream and up to S3.
+		read.pipe(upload);
+

services/track-changes/config/settings.defaults.coffee

@@ -1,3 +1,6 @@
+Path = require('path')
+TMP_DIR = Path.resolve(Path.join(__dirname, "../../", "tmp"))
+
 module.exports =
 	mongo:
 		url: 'mongodb://127.0.0.1/sharelatex'
@@ -23,7 +26,10 @@ module.exports =
 	#filestore:
 	#	backend: "s3"
 	#	stores:
-	#		user_files: "sharelatex-dev"
+	#		user_files: ""
 	#	s3:
 	#		key: ""
 	#		secret: ""
+
+	path:
+		dumpFolder:   Path.join(TMP_DIR, "dumpFolder")

services/track-changes/package.json

@@ -18,7 +18,9 @@
     "request": "~2.33.0",
     "redis-sharelatex": "~0.0.4",
     "redis": "~0.10.1",
-    "underscore": "~1.7.0"
+    "underscore": "~1.7.0",
+    "mongo-uri": "^0.1.2",
+    "s3-upload-stream": "^1.0.7"
   },
   "devDependencies": {
     "chai": "~1.9.0",