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December 17, 2015 20:00
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Quick hack to get the fastest route from/to home to/from work, and post it to mqtt so that Home Assistant/Openhab can pick it up. I had issues getting the paho mqtt library working for some reason, so I just resorted to using the mosquitto_pub client.
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- platform: mqtt | |
state_topic: "traffic/worktohome/fastest" | |
name: "Traffic work to home" | |
unit_of_measurement: "minutes" | |
state_format: "json:minutes" | |
- platform: mqtt | |
state_topic: "traffic/hometowork/fastest" | |
name: "Traffic home to work" | |
unit_of_measurement: "minutes" | |
state_format: "json:minutes" |
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import googlemaps | |
import json | |
from datetime import datetime | |
from collections import OrderedDict | |
API_KEY = 'API KEY from google traffic api' | |
home = 'home street address' | |
work = 'work street address' | |
def getRoute(fromAddr, toAddr): | |
gmaps = googlemaps.Client(key=API_KEY) | |
now = datetime.now() | |
results = OrderedDict() | |
directions_result = gmaps.directions(fromAddr, | |
toAddr, | |
mode="driving", | |
departure_time=now, | |
alternatives=True) | |
results['description'] = "{fromAddr} to {toAddr}".format(fromAddr=fromAddr, toAddr=toAddr) | |
results['fastest'] = {'time': None, 'text': None, 'name': None} | |
for route in directions_result: | |
# print json.dumps(directions_result, indent=4) | |
# print route['summary'] | |
total_distance = 0.0 | |
total_time = 0.0 | |
results[route['summary']] = OrderedDict(legs=[]) | |
for leg in route['legs']: | |
# print leg['distance'] | |
total_distance += leg['distance']['value'] | |
total_time += leg['duration']['value'] | |
for step in leg['steps']: | |
results[route['summary']]['legs'].append("{distance} {duration} {desc}".format( | |
distance=step['distance']['text'], | |
duration=step['duration']['text'], | |
desc=step['html_instructions'] | |
)) | |
# print "\t", step['distance']['text'], step['duration']['text'], step['html_instructions'] | |
results[route['summary']]['total_miles'] = (total_distance * 0.00062137) | |
results[route['summary']]['total_minutes'] = (total_time / 60) | |
if not results['fastest']['time'] or results['fastest']['time'] > total_time: | |
# new fastest route | |
results['fastest'].update(time=total_time, | |
name=route['summary'], | |
text="{minutes:.2f} min via {name}".format(minutes=results[route['summary']]['total_minutes'], name=route['summary'])) | |
# print "Total Distance: %.2f miles" % (total_distance * 0.00062137) | |
# print "Total Duration: %.2f minutes" % (total_time / 60) | |
# print "" | |
return results | |
res = { | |
'worktohome': getRoute(work, home), | |
'hometowork': getRoute(home, work) | |
} | |
print json.dumps(res, indent=4) | |
from subprocess import check_output | |
msgs = [] | |
for x in res: | |
res[x]['fastest']['minutes'] = res[x]['fastest']['time'] / 60 | |
print "creating msg %s: %r" % (x, res[x]['fastest']) | |
print "sending message to mqtt: %s" % json.dumps(res[x]['fastest']) | |
print check_output(['/usr/bin/mosquitto_pub', | |
'-d', | |
'-h', 'mqtt', | |
'-p', '8884', | |
'-u', 'USERNAME', | |
'-P', 'PASSWORD', | |
'--cafile', '/root/cacert.pem', | |
'-q', '1', | |
'-t', 'traffic/%s/fastest' % x, | |
'-r', | |
'-m', json.dumps(res[x]['fastest']) | |
]) |
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