Send content-length header when getting file

services/filestore/app/coffee/FSPersistorManager.coffee

@@ -28,12 +28,13 @@ module.exports =
   getFileStream: (location, name, callback = (err, res)->)->
     filteredName = filterName name
     logger.log location:location, name:filteredName, "getting file"
-    sourceStream = fs.createReadStream "#{location}/#{filteredName}"
+    path = "#{location}/#{filteredName}"
+    fs.stat path, (error, stat) ->
+      sourceStream = fs.createReadStream path
       sourceStream.on 'error', (err) ->
         logger.err err:err, location:location, name:name, "Error reading from file"
         callback err
-    callback null,sourceStream
-
+      callback null, sourceStream, stat.size
 
   copyFile: (location, fromName, toName, callback = (err)->)->
     filteredFromName=filterName fromName

services/filestore/app/coffee/FileController.coffee

@@ -12,7 +12,7 @@ module.exports =
 		{key, bucket} = req
 		{format, style} = req.query
 		logger.log key:key, bucket:bucket, format:format, style:style, "reciving request to get file"
-		FileHandler.getFile bucket, key, {format:format,style:style}, (err, fileStream)->
+		FileHandler.getFile bucket, key, {format:format,style:style}, (err, fileStream, size)->
 			if err?
 				logger.err err:err, key:key, bucket:bucket, format:format, style:style, "problem getting file"
 				if !res.finished and res?.send? 
@@ -22,6 +22,7 @@ module.exports =
 				res.send 200
 			else
 				logger.log key:key, bucket:bucket, format:format, style:style, "sending file to response"
+				res.header("Content-Length", size)
 				fileStream.pipe res
 
 	insertFile: (req, res)->

services/filestore/app/coffee/FileHandler.coffee

@@ -22,20 +22,20 @@ module.exports =
 			(done)-> PersistorManager.deleteFile bucket, convetedKey, done
 		], callback
 
-	getFile: (bucket, key, opts = {}, callback)->
+	getFile: (bucket, key, opts = {}, callback = (err, fileStream, size) ->)->
 		logger.log bucket:bucket, key:key, opts:opts, "getting file"
 		if !opts.format? and !opts.style?
 			@_getStandardFile bucket, key, opts, callback
 		else
 			@_getConvertedFile bucket, key, opts, callback
 
-	_getStandardFile: (bucket, key, opts, callback)->
-		PersistorManager.getFileStream bucket, key, (err, fileStream)->
+	_getStandardFile: (bucket, key, opts, callback = (err, fileStream, size) ->)->
+		PersistorManager.getFileStream bucket, key, (err, fileStream, size)->
 			if err?
 				logger.err  bucket:bucket, key:key, opts:opts, "error getting fileStream"
-			callback err, fileStream
+			callback err, fileStream, size
 
-	_getConvertedFile: (bucket, key, opts, callback)->
+	_getConvertedFile: (bucket, key, opts, callback = (err, fileStream, size) ->)->
 		convetedKey = KeyBuilder.addCachingToKey(key, opts)
 		PersistorManager.checkIfFileExists bucket, convetedKey, (err, exists)=>
 			if exists

services/filestore/app/coffee/S3PersistorManager.coffee

@@ -67,7 +67,7 @@ module.exports =
 				return callback(err)
 			@sendFile bucketName, key, fsPath, callback
 			
-	getFileStream: (bucketName, key, callback = (err, res)->)->
+	getFileStream: (bucketName, key, callback = (err, res, size)->)->
 		logger.log bucketName:bucketName, key:key, "getting file from s3"
 		s3Client = knox.createClient
 			key: settings.filestore.s3.key
@@ -76,7 +76,7 @@ module.exports =
 		s3Stream = s3Client.get(key)
 		s3Stream.end()
 		s3Stream.on 'response', (res) ->
-			callback null, res
+			callback null, res, res.headers["content-length"]
 		s3Stream.on 'error', (err) ->
 			logger.err err:err, bucketName:bucketName, key:key, "error getting file stream from s3"
 			callback err

services/filestore/test/unit/coffee/FSPersistorManagerTests.coffee

@@ -66,11 +66,12 @@ describe "FSPersistorManagerTests", ->
 
   describe "getFileStream", ->
     it "should use correct file location", (done) ->
-      @Fs.createReadStream.returns(
-        on:->
-      )
-      @FSPersistorManager.getFileStream @location, @name1, (err,res)=>
+      @Fs.createReadStream.returns(@stream = on:->)
+      @Fs.stat = sinon.stub().callsArgWith(1, null, { size: @size = 42 })
+      @FSPersistorManager.getFileStream @location, @name1, (err, res, size)=>
         @Fs.createReadStream.calledWith("#{@location}/#{@name1Filtered}").should.equal.true
+        res.should.equal @stream
+        size.should.equal @size
         done()
 
   describe "copyFile", ->

services/filestore/test/unit/coffee/FileControllerTests.coffee

@@ -43,15 +43,16 @@ describe "FileController", ->
 				project_id:@project_id
 				file_id:@file_id
 		@res =
-			setHeader: ->
+			header: sinon.stub()
 		@fileStream = {}
 
 	describe "getFile", ->
 
 		it "should pipe the stream", (done)->
-			@FileHandler.getFile.callsArgWith(3, null, @fileStream)
+			@FileHandler.getFile.callsArgWith(3, null, @fileStream, @size = 42)
 			@fileStream.pipe = (res)=>
 				res.should.equal @res
+				res.header.calledWith("Content-Length", @size).should.equal true
 				done()
 			@controller.getFile @req, @res
 

services/filestore/test/unit/coffee/S3PersistorManagerTests.coffee

@@ -45,11 +45,20 @@ describe "S3PersistorManagerTests", ->
 
 
 		it "should use correct key", (done)->
-			@stubbedKnoxClient.get.returns(
-				on:->
+			@response =
+				headers:
+					"content-length": @size = 42
+
+			@stubbedKnoxClient.get.returns(@stream = 
+				on: (e, callback) =>
+					if e == "response"
+						callback(@response)
 				end:->
+				
 			)
-			@S3PersistorManager.getFileStream @bucketName, @key, @fsPath, (err)=>
+			@S3PersistorManager.getFileStream @bucketName, @key, (err, res, size) =>
+				res.should.equal @response
+				size.should.equal @size
 				@stubbedKnoxClient.get.calledWith(@key).should.equal true
 				done()