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Brian Gough 2015-05-21 11:33:13 +01:00
parent 66fc2715dc
commit 44e1dc8c0c
1 changed files with 4 additions and 2 deletions
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6
services/clsi/app/coffee/UrlFetcher.coffee
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@ -20,8 +20,9 @@ module.exports = UrlFetcher =
logger.log url:url, filePath: filePath, "started downloading url to cache"
urlStream = request.get({url: url, timeout: oneMinute})
urlStream.pause()
urlStream.pause() # stop data flowing until we are ready
# attach handlers before setting up pipes
urlStream.on "error", (error) ->
logger.error err: error, url:url, filePath: filePath, "error downloading url"
callbackOnce(error or new Error("Something went wrong downloading the URL #{url}"))
@ -33,6 +34,7 @@ module.exports = UrlFetcher =
if res.statusCode >= 200 and res.statusCode < 300
fileStream = fs.createWriteStream(filePath)
# attach handlers before setting up pipes
fileStream.on 'error', (error) ->
logger.error err: error, url:url, filePath: filePath, "error writing file into cache"
fs.unlink filePath, (err) ->
@ -48,7 +50,7 @@ module.exports = UrlFetcher =
logger.log url:url, filePath: filePath, "piping into filestream"
urlStream.pipe(fileStream)
urlStream.resume()
urlStream.resume() # now we are ready to handle the data
else
logger.error statusCode: res.statusCode, url:url, filePath: filePath, "unexpected status code downloading url to cache"
# https://nodejs.org/api/http.html#http_class_http_clientrequest