def handle_getlist(key):
"""Return a tuple containing True if the key contained a list and
the message to send back to the client."""
return_value = exists, value = handle_get(key)
if not isinstance(value, list):
return (
False,
'ERROR: Key [{}] contains non-list value ([{}])'.format(key, value)
)
else:
return return_value
def handle_append(key, value):
"""Return a tuple containing True if the key's value could be appended to
and the message to send back to the client."""
exists, list_value = handle_get(key)
try:
DATABASE_DICT[key]
DATABASE_DICT[key].append(value)
except KeyError:
operation_status = False
return_msg = 'ERROR: Key [{}] does not exists'.format(key)
except AttributeError:
operation_status = False
return_msg = 'ERROR: Key [{}] contains non-list value ([{}])'.format(key, value)
else:
operation_status = True
return_msg = 'Key [{}] had value [{}] appended'.format(key, value)
return operation_status, return_msg
def handle_increment(key):
"""Return a tuple containing True if the key's value could be incremented
and the message to send back to the client."""
exists, value = handle_get(key)
try:
DATABASE_DICT[key]
DATABASE_DICT[key] = value + 1
except KeyError:
operation_status = False
return_msg = 'ERROR: Key [{}] does not exists'.format(key)
except TypeError:
operation_status = False
return_msg = 'ERROR: Key [{}] contains non-int value ([{}])'.format(key, value)
else:
operation_status = True
return_msg = 'Key [{}] incremented'.format(key)
return operation_status, return_msg