def download_airframes_maybe():
""" download the airframes.xml if it does not exist or it's older than a day.
returns True if the file can be used
"""
airframes_file = get_airframes_filename()
need_download = False
if os.path.exists(airframes_file):
elapsed_sec = time.time() - os.path.getmtime(airframes_file)
if elapsed_sec / 3600 > 24:
need_download = True
os.unlink(airframes_file)
else:
need_download = True
if need_download:
print("Downloading airframes from " + get_airframes_url())
try:
urlretrieve(get_airframes_url(), airframes_file)
except Exception as e:
print("Download error: " + str(e))
return False
return True
def __get_airframe_data(airframe_id):
""" cached version of get_airframe_data()
"""
airframe_xml = get_airframes_filename()
if download_file_maybe(airframe_xml, get_airframes_url()):
try:
e = xml.etree.ElementTree.parse(airframe_xml).getroot()
for airframe_group in e.findall('airframe_group'):
for airframe in airframe_group.findall('airframe'):
if str(airframe_id) == airframe.get('id'):
ret = {'name': airframe.get('name')}
try:
ret['type'] = airframe.find('type').text
except:
pass
return ret
except:
pass
return None
def get_airframe_data(airframe_id):
""" return a dict of aiframe data ('name' & 'type') from an autostart id.
Downloads aiframes if necessary. Returns None on error
"""
airframe_xml = get_airframes_filename()
if download_file_maybe(airframe_xml, get_airframes_url()):
try:
e = xml.etree.ElementTree.parse(airframe_xml).getroot()
for airframe_group in e.findall('airframe_group'):
for airframe in airframe_group.findall('airframe'):
if str(airframe_id) == airframe.get('id'):
ret = {'name': airframe.get('name')}
try:
ret['type'] = airframe.find('type').text
except:
pass
return ret
except:
pass
return None
