def _fetchFile(self, filename, fileSystem=None, fetcher=None, closeOnError=True):
if not fileSystem:
fileSystem = FileSystem(self.config)
if not fetcher:
fetcher = CacheFetcher(self.config, fileSystem, self.connection)
if not os.path.isfile(filename):
error("file not found '%s'" % filename)
if closeOnError and not self.single: fetcher.sendExit()
return (filename, 1)
fileinfo = fileSystem.getFileInfo(filename)
destination = self.getDestination(fileSystem, filename)
if destination is None:
return (filename, 1)
log("destination: " + str(destination))
if os.path.isfile(destination):
wait = fetcher.isActive(destination)
while wait > 0:
log("file transfer in progress. wait %ds" % wait)
time.sleep(wait)
wait = fetcher.isActive(destination)
fileExists, canCopy, removed = fileSystem.destinationExists(fileinfo, destination)
if fileExists:
if removed:
log("removed " + destination)
fetcher.sendFileRemoved(fileinfo, destination)
if not canCopy:
error("cannot copy file to %s" % destination)
return (filename, 1)
else:
log("using existing file")
fileSystem.setATime(destination)
fetcher.sendFileLocation(fileinfo, destination)
return (destination, 0)
freeSpace, removed = fileSystem.checkFreeSpace(int(fileinfo[1]), destination)
if not freeSpace:
log("not enough free space in %s" % fileSystem.cacheDir)
if closeOnError and self.single: fetcher.sendExit()
return (filename, 1)
log("request: " + filename)
fetcher.requestFile(fileinfo, destination)
msg = self.connection.receiveMessage()
resultFile, ok, term = fetcher.handleMessage(fileinfo, destination, msg)
while not ok:
msg = self.connection.receiveMessage()
resultFile, ok, term = fetcher.handleMessage(fileinfo, destination, msg)
return (resultFile, 0)
