openWB Forum

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/var/www/html/openWB/modules/soc_mercedes/

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# thanks to https://developer.byu.edu/docs/consume-api/use-api/oauth-20/oauth-20-python-sample-code

"""
this file should be called in an interactive shell, as it generates output and expects user input.
It needs to be called only once at the beginning (and in cases where the refresh token has expired)
"""

import requests, json

from myAppDetails import authorize_url, token_url, callback_uri, client_id, client_secret

# simulate a request from a browser on the authorize_url - will return an authorization code after the user is
# prompted for credentials. The code can be found in the address line of the browser
authorization_redirect_url = authorize_url + '?response_type=code&client_id=' + client_id + '&redirect_uri=' + callback_uri + '&scope=mb:vehicle:mbdata:evstatus'

print("go to the following url on the browser and enter the code from the returned url: ")
print("---  " + authorization_redirect_url + "  ---")
authorization_code = input('code: ')

# turn the authorization code into a access token, etc
data = {'grant_type': 'authorization_code', 'code': authorization_code, 'redirect_uri': callback_uri}
print("requesting access token")
access_token_response = requests.post(token_url, data=data, verify=True, allow_redirects=False, auth=(client_id, client_secret))

print("response")
print(access_token_response.headers)
print('body: ' + access_token_response.text)

# we can now use the access_token as much as we want to access protected resources.
# Storing the access token in a file.
tokens = json.loads(access_token_response.text)
access_token = tokens['access_token']
refresh_token = tokens['refresh_token']

outFile = open('access_token','w')
outFile.write(access_token)
outFile.close()

outFile = open('refresh_token','w')
outFile.write(refresh_token)
outFile.close()

print("stored access token: " + access_token)
print("stored refresh token: " + refresh_token)

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# thanks to https://developer.byu.edu/docs/consume-api/use-api/oauth-20/oauth-20-python-sample-code
"""
This file should be called in regular intervals, but not too often
to not exceed the budget of free API calls included with the BYOCAR
subscription.
"""

import requests
import json

from myAppDetails import test_api_url, logging

# read currently active access token from disk
inFile = open('access_token','r')
access_token = inFile.read().rstrip()
inFile.close()
logging.debug('read access token from disk: %s' % access_token)

# prepare and execute API call
api_call_headers = {'Authorization': 'Bearer ' + access_token}
api_call_response = requests.get(test_api_url, headers=api_call_headers, verify=True)
logging.debug('received Mercedes API response: %s' % api_call_response.text)

# parse response to extract SOC and Range (not needed for now)
# Example response: [{"soc":{"value":"100","timestamp":1596019475000}},{"rangeelectric":{"value":"37","timestamp":1596019751000}}]
# NOTE: the order may vary. Search for the list entry with
# according to API documentation, response will stay empty and status code 204 when no updated data is available
if api_call_response.status_code not in (200, 204):
    # error logging
    logging.error("Failed to retrieve Mercedes vehicle status. Received:\nStatus Code: %d\nResponse: %s" % api_call_response.text)
    exit(1)
elif api_call_response.status_code ==204:
    # exception,not critical
    if len(api_call_response.text)==0:
        logging.info('Received empty response with status code 204. Vehicle did not provide update for >12h. Keeping soc unchanged.')
        exit(0)
elif api_call_response.status_code == 200:
    # normal parsing of result
    resources = json.loads(api_call_response.text)
    soc=None
    range=None
    for entry in resources:
        if 'soc' in entry.keys():
            soc = entry['soc']['value']
            outFile = open('/var/www/html/openWB/ramdisk/mymercedes_soc', 'w')
            outFile.write(soc)
            outFile.close()
        if 'rangeelectric' in entry.keys():
            range = entry['rangeelectric']['value']
            outFile = open('/var/www/html/openWB/ramdisk/mymercedes_range','w')
            outFile.write(range)
            outFile.close()
    logging.info('Retrieved and stored Mercedes Vehicle Status: SOC '+soc+'%, Range '+range+'km' )

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# thanks to https://developer.byu.edu/docs/consume-api/use-api/oauth-20/oauth-20-python-sample-code

"""
this file needs to be run to refresh an expired access token
"""

import requests
import json

from myAppDetails import token_url, client_id, client_secret, logging

inFile = open('refresh_token','r')
refresh_token = inFile.read().rstrip()
inFile.close()

# use the refresh token to get a NEW access token
data = {'grant_type': 'refresh_token', 'refresh_token': refresh_token }
logging.debug("requesting updated access token")
refresh_token_response = requests.post(token_url, data=data, verify=True, allow_redirects=False, auth=(client_id, client_secret))

# logging
logging.debug("response")
logging.debug(refresh_token_response.headers)
logging.debug('body: ' + refresh_token_response.text)

# we can now use the NEW access_token as much as we want to access the API. The token expires after 3600s, therefore we need to call the refresh action before that, e.g. every 30mins
tokens = json.loads(refresh_token_response.text)
access_token = tokens['access_token']
refresh_token = tokens['refresh_token']

# store NEW tokens in a file
outFile = open('access_token','w')
outFile.write(access_token)
outFile.close()
outFile = open('refresh_token','w')
outFile.write(refresh_token)
outFile.close()

# more logging
logging.info("stored updated access token: " + access_token)
logging.info("stored updated refresh token: " + refresh_token)

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"""
this files holds the configuration details
"""
# client (application) credentials - you get these when signing up for the service in the section "Console"
client_id = '<<<Your Client ID Here>>>'
client_secret = '<<<Your Client Secret Here>>>'
# this must match the setting made in the "Console"
callback_uri = "https://localhost/"

# Your Vehicle ID
FIN='<<<Your FIN Here>>>'

# required for OAuth2
authorize_url = "https://api.secure.mercedes-benz.com/oidc10/auth/oauth/v2/authorize"
token_url = "https://api.secure.mercedes-benz.com/oidc10/auth/oauth/v2/token"

# The actual home of the API
test_api_url = "https://api.mercedes-benz.com/vehicledata/v1/vehicles/"+FIN+"/containers/electricvehicle"

# logger settings for the other scripts
import logging
logging.basicConfig(filename='/var/www/html/openWB/modules/soc_mercedes/app.log',level=logging.DEBUG, format='%(asctime)s %(levelname)s: %(message)s', datefmt='%Y-%m-%d %I:%M:%S %p')

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https://localhost/?code=614d8e2f-2cd0-496f-9fd6-c79b6fa2a1d0

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1 0 * * * /var/www/html/openWB/runs/cronnightly.sh >> /var/log/openWB.log 2>&1
*/5 * * * * cd /var/www/html/openWB/modules/soc_mercedes/ && python3 /var/www/html/openWB/modules/soc_mercedes/mercedessoc.py && /var/www/html/openWB/runs/cron5min.sh >> /var/log/openWB.log 2>&1
@reboot /var/www/html/openWB/runs/atreboot.sh >> /var/log/openWB.log 2>&1
*/30 * * * * cd /var/www/html/openWB/modules/soc_mercedes/ && python3 /var/www/html/openWB/modules/soc_mercedes/refresh.py
* * * * *  /var/www/html/openWB/regel.sh >> /var/log/openWB.log 2>&1
* * * * * sleep 10 && /var/www/html/openWB/regel.sh >> /var/log/openWB.log 2>&1
* * * * * sleep 20 && /var/www/html/openWB/regel.sh >> /var/log/openWB.log 2>&1
* * * * * sleep 30 && /var/www/html/openWB/regel.sh >> /var/log/openWB.log 2>&1
* * * * * sleep 40 && /var/www/html/openWB/regel.sh >> /var/log/openWB.log 2>&1
* * * * * sleep 50 && /var/www/html/openWB/regel.sh >> /var/log/openWB.log 2>&1

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http://localhost/openWB/ramdisk/mymercedes_soc

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{"fault":{"faultstring":"Gateway Timeout","detail":{"errorcode":"messaging.adaptors.http.flow.GatewayTimeout"}}}

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Hallo Ralf,
leider haben wir seit ein paar Tagen vermehrt Probleme mit dem API-Service, welches die Daten bereitstellt. Aus diesem Grund kommen vermehrt Fehler zustande.
Wir haben die API-Service-Verantwortlichen bereits darüber informiert und wir warten aktuell auf die Behebung des Incidents.
 Kind regards