added filestoreDomainOveride

services/clsi/app/coffee/UrlFetcher.coffee

@@ -1,6 +1,8 @@
 request = require("request").defaults(jar: false)
 fs = require("fs")
 logger = require "logger-sharelatex"
+settings = require("settings-sharelatex")
+URL = require('url');
 
 oneMinute = 60 * 1000
 
@@ -11,6 +13,9 @@ module.exports = UrlFetcher =
 			_callback(error)
 			_callback = () ->
 
+		if settings.filestoreDomainOveride?
+			p = URL.parse(url).path
+			url = "#{settings.filestoreDomainOveride}#{p}"
 		timeoutHandler = setTimeout () ->
 			timeoutHandler = null
 			logger.error url:url, filePath: filePath, "Timed out downloading file to cache"
@@ -31,6 +36,7 @@ module.exports = UrlFetcher =
 			logger.log url:url, filePath: filePath, "finished downloading file into cache"
 
 		urlStream.on "response", (res) ->
+			console.log
 			if res.statusCode >= 200 and res.statusCode < 300
 				fileStream = fs.createWriteStream(filePath)
 

services/clsi/config/settings.defaults.coffee

@@ -32,6 +32,7 @@ module.exports =
 	smokeTest: process.env["SMOKE_TEST"] or false
 	project_cache_length_ms: 1000 * 60 * 60 * 24
 	parallelFileDownloads:1
+	filestoreDomainOveride: process.env["FILESTORE_DOMAIN_OVERRIDE"]
 
 
 if process.env["DOCKER_RUNNER"]

services/clsi/test/unit/coffee/UrlFetcherTests.coffee

@@ -7,16 +7,47 @@ EventEmitter = require("events").EventEmitter
 describe "UrlFetcher", ->
 	beforeEach ->
 		@callback = sinon.stub()
-		@url = "www.example.com/file"
+		@url = "https://www.example.com/file/here?query=string"
 		@UrlFetcher = SandboxedModule.require modulePath, requires:
 			request: defaults: @defaults = sinon.stub().returns(@request = {})
 			fs: @fs = {}
 			"logger-sharelatex": @logger = { log: sinon.stub(), error: sinon.stub() }
+			"settings-sharelatex": @settings = {}
 
 	it "should turn off the cookie jar in request", ->
 		@defaults.calledWith(jar: false)
 			.should.equal true
-		
+
+	describe "rewrite url domain if filestoreDomainOveride is set", ->
+		beforeEach ->
+			@path = "/path/to/file/on/disk"
+			@request.get = sinon.stub().returns(@urlStream = new EventEmitter)
+			@urlStream.pipe = sinon.stub()
+			@urlStream.pause = sinon.stub()
+			@urlStream.resume = sinon.stub()
+			@fs.createWriteStream = sinon.stub().returns(@fileStream = new EventEmitter)
+			@fs.unlink = (file, callback) -> callback()
+
+		it "should use the normal domain when override not set", (done)->
+			@UrlFetcher.pipeUrlToFile @url, @path, =>
+				@request.get.args[0][0].url.should.equal @url
+				done()
+			@res = statusCode: 200
+			@urlStream.emit "response", @res
+			@urlStream.emit "end"
+			@fileStream.emit "finish"
+
+
+		it "should use override domain when filestoreDomainOveride is set", (done)->
+			@settings.filestoreDomainOveride = "192.11.11.11"
+			@UrlFetcher.pipeUrlToFile @url, @path, =>
+				@request.get.args[0][0].url.should.equal "192.11.11.11/file/here?query=string"
+				done()
+			@res = statusCode: 200
+			@urlStream.emit "response", @res
+			@urlStream.emit "end"
+			@fileStream.emit "finish"
+
 	describe "pipeUrlToFile", ->
 		beforeEach (done)->
 			@path = "/path/to/file/on/disk"