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Improve foscam library exception support #11701

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merged 5 commits into from
Jan 25, 2018
Merged

Improve foscam library exception support #11701

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3963701
Improve foscam library exception support
i-am-shodan Jan 16, 2018
0514943
Fixed line length
gavinlam Jan 16, 2018
dae839f
Changed exception and log handling
gavinlam Jan 18, 2018
b797240
Removed unused var
gavinlam Jan 19, 2018
c2f7807
Fix remaining issue
fabaff Jan 25, 2018
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28 changes: 18 additions & 10 deletions homeassistant/components/camera/foscam.py
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Original file line number Diff line number Diff line change
Expand Up @@ -75,20 +75,28 @@ def motion_detection_enabled(self):

def enable_motion_detection(self):
"""Enable motion detection in camera."""
ret, err = self._foscam_session.enable_motion_detection()
if ret == FOSCAM_COMM_ERROR:
_LOGGER.debug("Unable to communicate with Foscam Camera: %s", err)
self._motion_status = True
else:
try:
ret, err = self._foscam_session.enable_motion_detection()
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What's the use of returning an err code if it can also throw exceptions 🤔

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A question to the original author perhaps. This patch is a sticking plaster to fix a long standing bug.

if ret == FOSCAM_COMM_ERROR:
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This code makes no sense. If it is an error, log that an error has occurred and then assume the command was successful because we're setting the attribute to True ?

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If you loved this then you’ll love the constructor for this module. Who approved this in the first place???

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So if this is supposed to be the "positive" result, we should not log "Unable to communicate"? I know it is not your code, but if you're touching it, let's at least just remove that log statement.

_LOGGER.debug("Unable to communicate with Foscam Camera: %s", err)
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line too long (82 > 79 characters)

self._motion_status = True
else:
self._motion_status = False
except:
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Please specify the exceptions that Foscam can raise

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Without having the broad range of Foscam devices to test against this isn’t really achievable to fix this bug. There are at least two cases noted in the upstream repo.

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You should be able to see what the Python classes are of the exceptions that get raised

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Looks like both the issues upstream result in TypeErrors. I'll add just those

_LOGGER.debug("An exception occured when communicating with the Foscam Camera")
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line too long (91 > 79 characters)

self._motion_status = False

def disable_motion_detection(self):
"""Disable motion detection."""
ret, err = self._foscam_session.disable_motion_detection()
if ret == FOSCAM_COMM_ERROR:
_LOGGER.debug("Unable to communicate with Foscam Camera: %s", err)
self._motion_status = True
else:
try:
ret, err = self._foscam_session.disable_motion_detection()
if ret == FOSCAM_COMM_ERROR:
_LOGGER.debug("Unable to communicate with Foscam Camera: %s", err)
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line too long (82 > 79 characters)

self._motion_status = True
else:
self._motion_status = False
except:
_LOGGER.debug("An exception occured when communicating with the Foscam Camera")
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line too long (91 > 79 characters)

self._motion_status = False

@property
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