Not handling exceptions while performing IO operations

[kimenye]

We need to handle errors related to image resizing and any file IO operations. An example of an error when trying to resize a profile picture

raceback (most recent call last):
  File "/home/deploy/apps/whatsapp/venv/bin/ongair-cli", line 18, in <module>
    main(sys.argv[1:])
  File "/home/deploy/apps/whatsapp/venv/bin/ongair-cli", line 14, in main
    client.loop()
  File "/home/deploy/apps/whatsapp/venv/local/lib/python2.7/site-packages/ongair/client.py", line 47, in loop
    stack.loop(timeout=5, discrete=0.5)  # this is the program mainloop
  File "/home/deploy/apps/whatsapp/venv/local/lib/python2.7/site-packages/yowsup/stacks/yowstack.py", line 187, in loop
    asyncore.loop(*args, **kwargs)
  File "/usr/lib/python2.7/asyncore.py", line 216, in loop
    poll_fun(timeout, map)
  File "/usr/lib/python2.7/asyncore.py", line 156, in poll
    read(obj)
  File "/usr/lib/python2.7/asyncore.py", line 87, in read
    obj.handle_error()
  File "/usr/lib/python2.7/asyncore.py", line 83, in read
    obj.handle_read_event()
  File "/usr/lib/python2.7/asyncore.py", line 449, in handle_read_event
    self.handle_read()
  File "/home/deploy/apps/whatsapp/venv/local/lib/python2.7/site-packages/yowsup/layers/network/layer.py", line 86, in handle_read
    self.receive(data)
  File "/home/deploy/apps/whatsapp/venv/local/lib/python2.7/site-packages/yowsup/layers/network/layer.py", line 94, in receive
    self.toUpper(data)
  File "/home/deploy/apps/whatsapp/venv/local/lib/python2.7/site-packages/yowsup/layers/__init__.py", line 59, in toUpper
    self.__upper.receive(data)
  File "/home/deploy/apps/whatsapp/venv/local/lib/python2.7/site-packages/yowsup/layers/stanzaregulator/layer.py", line 28, in receive
    self.processReceived()
  File "/home/deploy/apps/whatsapp/venv/local/lib/python2.7/site-packages/yowsup/layers/stanzaregulator/layer.py", line 51, in processReceived
    self.processReceived()
  File "/home/deploy/apps/whatsapp/venv/local/lib/python2.7/site-packages/yowsup/layers/stanzaregulator/layer.py", line 51, in processReceived
    self.processReceived()
  File "/home/deploy/apps/whatsapp/venv/local/lib/python2.7/site-packages/yowsup/layers/stanzaregulator/layer.py", line 48, in processReceived
    self.toUpper(oneMessageData)
  File "/home/deploy/apps/whatsapp/venv/local/lib/python2.7/site-packages/yowsup/layers/__init__.py", line 59, in toUpper
    self.__upper.receive(data)
  File "/home/deploy/apps/whatsapp/venv/local/lib/python2.7/site-packages/yowsup/layers/auth/layer_crypt.py", line 63, in receive
    self.toUpper(payload)
  File "/home/deploy/apps/whatsapp/venv/local/lib/python2.7/site-packages/yowsup/layers/__init__.py", line 59, in toUpper
    self.__upper.receive(data)
  File "/home/deploy/apps/whatsapp/venv/local/lib/python2.7/site-packages/yowsup/layers/coder/layer.py", line 35, in receive
    self.toUpper(node)
  File "/home/deploy/apps/whatsapp/venv/local/lib/python2.7/site-packages/yowsup/layers/__init__.py", line 59, in toUpper
    self.__upper.receive(data)
  File "/home/deploy/apps/whatsapp/venv/local/lib/python2.7/site-packages/yowsup/layers/logger/layer.py", line 14, in receive
    self.toUpper(data)
  File "/home/deploy/apps/whatsapp/venv/local/lib/python2.7/site-packages/yowsup/layers/__init__.py", line 59, in toUpper
    self.__upper.receive(data)
  File "/home/deploy/apps/whatsapp/venv/local/lib/python2.7/site-packages/yowsup/layers/axolotl/layer.py", line 126, in receive
    self.toUpper(protocolTreeNode)
  File "/home/deploy/apps/whatsapp/venv/local/lib/python2.7/site-packages/yowsup/layers/__init__.py", line 59, in toUpper
    self.__upper.receive(data)
  File "/home/deploy/apps/whatsapp/venv/local/lib/python2.7/site-packages/yowsup/layers/__init__.py", line 169, in receive
    s.receive(data)
  File "/home/deploy/apps/whatsapp/venv/local/lib/python2.7/site-packages/yowsup/layers/__init__.py", line 105, in receive
    recv(node)
  File "/home/deploy/apps/whatsapp/venv/local/lib/python2.7/site-packages/yowsup/layers/auth/layer_authentication.py", line 71, in handleSuccess
    self.toUpper(nodeEntity)
  File "/home/deploy/apps/whatsapp/venv/local/lib/python2.7/site-packages/yowsup/layers/__init__.py", line 59, in toUpper
    self.__upper.receive(data)
  File "/home/deploy/apps/whatsapp/venv/local/lib/python2.7/site-packages/yowsup/layers/interface/interface.py", line 98, in receive
    self.callbacks[entityType](entity)
  File "/home/deploy/apps/whatsapp/venv/local/lib/python2.7/site-packages/ongair/ongair.py", line 40, in onSuccess
    self.work()
  File "/home/deploy/apps/whatsapp/venv/local/lib/python2.7/site-packages/ongair/ongair.py", line 196, in work
    self.setProfilePicture(job)
  File "/home/deploy/apps/whatsapp/venv/local/lib/python2.7/site-packages/ongair/ongair.py", line 258, in setProfilePicture
    pictureData = src.resize((640, 640)).tobytes("jpeg", "RGB")
  File "/home/deploy/apps/whatsapp/venv/local/lib/python2.7/site-packages/PIL/Image.py", line 668, in tobytes
    e = _getencoder(self.mode, encoder_name, args)
  File "/home/deploy/apps/whatsapp/venv/local/lib/python2.7/site-packages/PIL/Image.py", line 430, in _getencoder
    return encoder(mode, *args + extra)
SystemError: unknown raw mode

[kimenye]

We also need a fix for this particular error. Its referenced as a closed issue in yowsup but its still happening.

[kenju254]

@kimenye could you reference where the link to the solved issue on Yowsup

[kimenye]

It's here https://github.com/tgalal/yowsup/issues/897

[kenju254]

Thanks @kimenye seen it ..