def updateCommandStatus(self):
if self.detector_command is None:
return
cmd_alive = self.detector_command.is_alive()
if cmd_alive is False:
try:
cmd_name = self.detector_command.getCommandName()
ret_value = self.detector_command.getCommandAnswer()
if cmd_name == 'check_connections':
try:
ans = ret_value['value']
ret_value = ""
for conn in ans:
ret_value += '{name}={up},'.format(**conn)
except:
ret_value = "cannot parse result"
else:
ret_value = str(ret_value)
self.cmd_answer[cmd_name] = ret_value
log.log(
2, "command %s finished execution. answer is: %s" %
(cmd_name, ret_value))
except BaseException as e:
log.log(1, "error update command: %s" % str(e))
def run_command(self, cmdname, url):
log.log(2, "command %s - (%s) is running" % (self.cmd_name, cmdname))
headers = {}
headers['Content-type'] = self.mimeType
self._connection.request('PUT', url, body=self.data, headers=headers)
response = self._connection.getresponse()
status = response.status
data = response.read()
if status == 200:
data_l = json.loads(data)
if isinstance(data_l, dict) and cmdname in ['arm', 'trigger']:
log.log(2, "answer to %s is : %s" % (cmdname, str(data_l)))
if 'sequence_id' in data_l.keys():
answer = data_l['sequence id']
else:
log.log(
3, "answer to %s contains keys: %s" %
(cmdname, data_l.keys()))
answer = data_l
else:
answer = data_l
log.log(2,
"response from %s command : %s" % (cmdname, str(answer)))
return answer
else:
log.log(
1, "cannot get response from %s command - status: %s" %
(cmdname, status))
return None
def setVerbose(self, verbose):
""" Switch verbose mode on and off.
Args:
verbose: bool value
"""
self._verbose = bool(verbose)
log.log(2, "DEigerClient verbose level set to %s" % (verbose))
def __init__(self, host, port, url, command, data, mimeType):
log.log(2, "creating command thread for command %s" % command)
self._connection = http.HTTPConnection(host,
port,
timeout=self.commandTimeout)
self.url = url
self.cmd_name = command
self.data = data
self.mimeType = mimeType
threading.Thread.__init__(self)
self.answer = None
def set_number_trigger(self, value):
headers = {}
headers['Content-type'] = 'application/json; charset=utf-8'
data = json.dumps({'value': value})
log.log(3, "setting ntrigger to %s" % value)
self._connection.request('PUT',
self.ntrigger_url,
body=data,
headers=headers)
response = self._connection.getresponse()
log.log(3, "setting ntrigger returns %s " % str(response))
def __init__(self,
host='127.0.0.1',
port=80,
verbose=False,
urlPrefix=None,
user=None):
"""
Create a client object to talk to the EIGER API.
Args:
host: hostname of the detector computer
port: port usually 80 (http)
verbose: bool value
urlPrefix: String prepended to the urls. Should be None. Added for future convenience.
user: "******". Should be None. Added for future convenience.
"""
super(DEigerClient, self).__init__()
self._host = host
self._port = port
self._version = Version
self._verbose = verbose
self._urlPrefix = ""
self._user = None
self._connectionTimeout = MAX_TIMEOUT
log.log(
2, "DEigerClient created - host: %s / port: %s (verbose=%s)" %
(self._host, self._port, self._verbose))
#pingret = os.system("ping -c 1 -w 1 -W 10 %s > /dev/null 2>&1" % self._host)
#if pingret != 0:
#raise BaseException("Cannot access DCU")
try:
self._connection = http.HTTPConnection(
self._host, self._port, timeout=self._connectionTimeout)
except BaseException as exc:
log.log(1, "Exception while connecting to Eiger DCU %s" % str(exc))
raise (e)
self._serializer = None
self.detector_command = None
self.cmd_answer = {}
self.read_thread = None
self.read_value = {}
self.setUrlPrefix(urlPrefix)
self.setUser(user)
def startAcquisition(self, need_arm=True, trigger_mode='ints', ntrigger=1):
if self.isExecutingCommand():
log.log(1, "cannot start acquisition while a command is running")
return False
arm_url = self._url('detector', 'command', 'arm')
trigger_url = self._url('detector', 'command', 'trigger')
ntrigger_url = self._url('detector', 'config', 'ntrigger')
self.detector_command = StartAcquisitionThread(self._host, self._port, \
arm_url, trigger_url, ntrigger_url)
self.detector_command.set_arm_needed(need_arm)
self.detector_command.set_trigger_mode(trigger_mode)
self.detector_command.set_ntrigger(ntrigger)
self.startDetectorCommand()
return True
def run(self):
req = urlopen(self.url, timeout=self.commandTimeout)
try:
with open(self.target_path, 'wb') as fp:
log.log(2, 'writing ' + self.target_path)
shutil.copyfileobj(req, fp, 512 * 1024)
assert os.access(self.target_path, os.R_OK)
return "ok"
except:
import traceback
log.log(1, 'cannot write ' + self.target_path)
log.log(1, traceback.format_exc())
return ".error."
def _log(self, *args):
if self._verbose:
log.log(2, ' '.join([str(elem) for elem in args]))
def run(self):
try:
if self.trigger_mode in ['ints', 'inte']:
if self.arm_needed:
if self.ntrigger == 1:
log.log(2, "programming big trigger no")
self.set_ntrigger(TRIGGER_NO_MAX)
elif self.ntrigger == TRIGGER_NO_MAX:
log.log(3, "ntrigger is big")
else:
log.log(2,
"programming ntrigger to %s" % self.ntrigger)
self.set_ntrigger(self.ntrigger)
aret = self.run_command("arm", self.arm_url)
log.log(2, "arm command finished. returned: %s" % aret)
if aret is None:
return self.error()
else:
aret = None
tret = self.run_command("trigger", self.trigger_url)
log.log(2, "trigger command finished. returned: %s" % aret)
if tret is not None:
if aret is None:
self.answer = tret
log.log(2,
"startacq finished. returning t - %s " % tret)
return
else:
log.log(2,
"startacq finished. returning a - %s " % aret)
self.answer = aret
return
else: # external trigger
aret = self.run_command("arm", self.arm_url)
log.log(2, "arm command finished. returned: %s" % aret)
self.set_ntrigger(self.ntrigger)
if aret is None:
return self.error()
except BaseException as exc:
import traceback
log.log(1,
"error starting acquisition %s" % traceback.format_exc())
return self.error()