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Kill all Jupyter notebook before starting PoppyDaemon #32

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Kill all Jupyter notebook before starting PoppyDaemon #32

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14 changes: 14 additions & 0 deletions puppet_master.py
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Original file line number Diff line number Diff line change
Expand Up @@ -25,6 +25,8 @@ def __init__(self, DaemonCls, configfile, pidfile):
self._updating = False

def start(self):
# Kill all robot instances in Jupyter that could interfere with poppy-services
self._stop_jupyter_kernels("http://localhost:8888")
self.daemon.start()

@property
Expand Down Expand Up @@ -106,6 +108,18 @@ def send_value(self, motor, register, value):
r = requests.post(url.format(motor, register), json=value)
return r

def _stop_jupyter_kernels(self, base_url):
"""
Shutdown Jupyter notebook kernels using Jupyter REST API
"""
# A GET request on main page is needed to have the xsrf token in cookies
client = requests.session()
client.get(base_url)
kernels = client.get("%s/api/kernels" % base_url).json()
for k in kernels:
client.delete("%s/api/kernels/%s" % (base_url, k["id"]),
data = {"_xsrf": client.cookies['_xsrf']})

if __name__ == '__main__':
import sys

Expand Down