except RequestError:
feed = Feed(name="temperature")
temperature = aio.create_feed(feed)
#
# Adding data
#
aio.send_data(temperature.key, 42)
# works the same as send now
aio.append(temperature.key, 52)
# setup batch data with custom created_at values
yesterday = (datetime.datetime.today() - datetime.timedelta(1)).isoformat()
today = datetime.datetime.now().isoformat()
data_list = [Data(value=50, created_at=today), Data(value=33, created_at=yesterday)]
# send batch data
aio.send_batch_data(temperature.key, data_list)
#
# Retrieving data
#
data = aio.receive_next(temperature.key)
print(data)
data = aio.receive(temperature.key)
print(data)
data = aio.receive_previous(temperature.key)
print(data)
class AdafruitClientIO(object):
'''
Implements the Adafruit IO custom client class
using groups to send/update multiple feeds with one request
See: https://github.com/adafruit/Adafruit_IO_Python/tree/master/Adafruit_IO
'''
# The Adafruit IO Client and Group
aio = None
group = None
def __init__(self, update_sec=30, cfg_file="aiocfg.txt"):
# Update period
# Rate limit is 30 updates every 60 seconds = 6 feeds every 12 seconds
if update_sec > 60/(30/6):
self.update_sec = datetime.timedelta(seconds=update_sec)
else:
self.update_sec = datetime.timedelta(seconds=12)
# Force feed update when the send_data_all_feeds() is called for the first time
self._crt_time = datetime.datetime.utcnow()
self._last_time = datetime.datetime.utcnow() - self.update_sec
# Read the access info
self.cfg_file = os.path.join(Path(__file__).parent.absolute(), cfg_file)
try:
with open(self.cfg_file,'r') as f:
aio_info = f.read().split('\n')
# Access
self.aio_acc = aio_info[0].split(',',2)
# Feed group
self.aio_grp = aio_info[1].split(',',2)
if DEBUG:
print(f"Read config file {self.cfg_file}:")
print(self.aio_grp)
# Feed names
self.aio_feednames = aio_info[2].split(',',6)
if DEBUG:
print(self.aio_feednames)
# Location (lat, lon and ele)
self.aio_loc = aio_info[3].split(',',3)
if DEBUG:
print(self.aio_loc)
except IOError:
print(f"Adafruit IO:: Configuration file '{self.cfg_file}' read error (not found or cannot be read)! Exiting!")
raise
# Create an instance of the REST client.
self.aio = Client(self.aio_acc[0], self.aio_acc[1])
# Get/Create the group
try:
# Get the WS group
self.group = self.aio.groups(self.aio_grp[1])
except errors.RequestError:
# The returned object will contain all the details about the created group.
self.group = self.aio.create_group(Group(name=self.aio_grp[0]))
pass
# Get/Create the feeds
if len(self.group.feeds):
# Get the feed names
self._feednames = dict()
for _idx in range(len(self.group.feeds)):
self._feednames[self.group.feeds[_idx].name] = _idx
if DEBUG > 1:
print(self._feednames)
self._direction = self.group.feeds[self._feednames[self.aio_feednames[0]]]
self._temperature = self.group.feeds[self._feednames[self.aio_feednames[1]]]
self._speed = self.group.feeds[self._feednames[self.aio_feednames[2]]]
self._pressure = self.group.feeds[self._feednames[self.aio_feednames[3]]]
self._humidity = self.group.feeds[self._feednames[self.aio_feednames[4]]]
self._rssi = self.group.feeds[self._feednames[self.aio_feednames[5]]]
if DEBUG:
print(f"Got group {self.group.name} with {len(self.group.feeds)} feeds.")
else:
# Create feeds in the group
feed = Feed(name=self.aio_feednames[0])
self._direction = self.aio.create_feed(feed, self.group.name)
feed = Feed(name=self.aio_feednames[1])
self._temperature = self.aio.create_feed(feed, self.group.name)
feed = Feed(name=self.aio_feednames[2])
self._speed = self.aio.create_feed(feed, self.group.name)
feed = Feed(name=self.aio_feednames[3])
self._pressure = self.aio.create_feed(feed, self.group.name)
feed = Feed(name=self.aio_feednames[4])
self._humidity = self.aio.create_feed(feed, self.group.name)
feed = Feed(name=self.aio_feednames[5])
self._rssi = self.aio.create_feed(feed, self.group.name)
if DEBUG:
print(f"Created group {self.group.name} with {len(self.group.feeds)} feeds.")
def send_data_all_feeds(self, data_dict, metadata=None):
# Trigger update with the set time period
self._crt_time = datetime.datetime.utcnow()
if self._crt_time >= self._last_time + self.update_sec:
# Time update
self._last_time = datetime.datetime.utcnow()
# Metadata
metadata = metadata or {'lat': float(self.aio_loc[0]),
'lon': float(self.aio_loc[1]),
'ele': float(self.aio_loc[2]),
'created_at': self._crt_time.isoformat()}
# Send data to all feeds
try:
self.aio.send_data(self._direction.key, data_dict['N'], metadata)
self.aio.send_data(self._temperature.key, data_dict['T'], metadata)
self.aio.send_data(self._speed.key, data_dict['S'], metadata)
self.aio.send_data(self._pressure.key, data_dict['P'], metadata)
self.aio.send_data(self._humidity.key, data_dict['H'], metadata)
self.aio.send_data(self._rssi.key, data_dict['Rssi'], metadata)
except (gaierror, ConnectionError, NewConnectionError, MaxRetryError, JSONDecodeError):
pass
if DEBUG:
print(f"Data {data_dict} sent to {len(self.group.feeds)} feeds with metadata {metadata}")
def send_batch_data(self, feed, data_list, created_at=None):
# Setup batch data with custom created_at values
if created_at is None:
time = datetime.datetime.utcnow().isoformat()
else:
time = created_at.isoformat()
# The data batch
data_tuplelist = [Data(value=data_list[_idx], created_at=time) for _idx in range(len(data_list))]
# Send batch data
self.aio.send_batch_data(feed.key, data_tuplelist)