def claim(self, session_id):
"""Claim device
Tries to claim MPM device and provides a human readable session_id.
The caller must remember this token, and call reclaim() on regular
intervals in order not to lose the claim.
Will return a token on success, or raise an Exception on failure.
"""
self._state.lock.acquire()
if self._state.claim_status.value:
self.log.warning("Someone tried to claim this device again")
self._last_error = "Someone tried to claim this device again"
self._state.lock.release()
raise RuntimeError("Double-claim")
self.log.debug("Claiming from: %s, Session ID: %s", self.client_host,
session_id)
self._state.claim_token.value = bytes(
''.join(choice(ascii_letters + digits) for _ in range(TOKEN_LEN)),
'ascii')
self._state.claim_status.value = True
self.periph_manager.claimed = True
self.periph_manager.claim()
self._state.lock.release()
self.session_id = session_id + " ({})".format(self.client_host)
self._reset_timer()
self.log.debug("giving token: %s to host: %s",
self._state.claim_token.value, self.client_host)
if self.client_host in net.get_local_ip_addrs():
self.periph_manager.set_connection_type("local")
else:
self.periph_manager.set_connection_type("remote")
return self._state.claim_token.value
def get_device_info(self):
"""
get device information
This is as safe method which can be called without a claim on the device
"""
info = self.periph_manager.get_device_info()
if self.client_host in net.get_local_ip_addrs():
info["connection"] = "local"
else:
info["connection"] = "remote"
return info
def get_device_info(self):
"""
get device information
This is as safe method which can be called without a claim on the device
"""
info = self.periph_manager.get_device_info()
info["mpm_version"] = "{}.{}".format(*MPM_COMPAT_NUM)
if self.client_host in net.get_local_ip_addrs():
info["connection"] = "local"
else:
info["connection"] = "remote"
return info
def claim(self, session_id):
"""Claim device
Tries to claim MPM device and provides a human readable session_id.
The caller must remember this token, and call reclaim() on regular
intervals in order not to lose the claim.
Will return a token on success, or raise an Exception on failure.
"""
self._state.lock.acquire()
if self._state.claim_status.value:
error_msg = \
"Someone tried to claim this device again (From: {})".format(
self.client_host)
self.log.warning(error_msg)
self._last_error = error_msg
self._state.lock.release()
raise RuntimeError("Double-claim")
self.log.debug(
"Claiming from: %s, Session ID: %s",
self.client_host,
session_id
)
self._state.claim_token.value = bytes(''.join(
choice(ascii_letters + digits) for _ in range(TOKEN_LEN)
), 'ascii')
self._state.claim_status.value = True
self.periph_manager.claimed = True
self.periph_manager.claim()
if self.periph_manager.clear_rpc_method_registry_on_unclaim:
self._init_rpc_calls(self.periph_manager)
self._state.lock.release()
self.session_id = session_id + " ({})".format(self.client_host)
self._reset_timer()
self.log.debug(
"giving token: %s to host: %s",
self._state.claim_token.value,
self.client_host
)
if self.client_host in net.get_local_ip_addrs():
self.periph_manager.set_connection_type("local")
else:
self.periph_manager.set_connection_type("remote")
return self._state.claim_token.value
def _is_connection_local(client_hostname):
return client_hostname in net.get_local_ip_addrs()
