def handleCmd(srvObj, reqPropsObj, httpRef):
"""
Handle UNSUBSCRIBE command.
srvObj: Reference to NG/AMS server class object (ngamsServer).
reqPropsObj: Request Property object to keep track of actions done
during the request handling (ngamsReqProps).
httpRef: Reference to the HTTP request handler
object (ngamsHttpRequestHandler).
Returns: Void.
"""
# added by [email protected]
if (reqPropsObj.hasHttpPar("subscr_id")):
id = reqPropsObj.getHttpPar("subscr_id")
err, errStr = delSubscriber(srvObj, id)
###########
else:
if (reqPropsObj.hasHttpPar("url")):
url = reqPropsObj.getHttpPar("url")
else:
errMsg = genLog("NGAMS_ER_CMD_SYNTAX",
[NGAMS_SUBSCRIBE_CMD, "Missing parameter: url"])
raise Exception(errMsg)
err, errStr = delSubscriber(srvObj, ngamsLib.getSubscriberId(url))
if err:
httpRef.send_status('UNSUBSCRIBE command failed: ' + errStr,
status=NGAMS_FAILURE,
code=NGAMS_HTTP_SUCCESS)
else:
return "Successfully handled UNSUBSCRIBE command"
def handleCmd(srvObj, reqPropsObj, httpRef):
"""
Handle SUBSCRIBE Command.
srvObj: Reference to NG/AMS server class object (ngamsServer).
reqPropsObj: Request Property object to keep track of actions done
during the request handling (ngamsReqProps).
httpRef: Reference to the HTTP request handler
object (ngamsHttpRequestHandler).
Returns: Void.
"""
T = TRACE()
"""
if (srvObj.getDataMoverOnlyActive() and len(srvObj.getSubscriberDic()) > 0):
srvObj.reply(reqPropsObj, httpRef, NGAMS_HTTP_SUCCESS, NGAMS_FAILURE,
"Data Mover NGAS server can have only one subscriber. Use command USUBSCRIBE to update an existing subscriber.")
return
"""
priority = 10
url = ""
startDate = time.time()
filterPi = ""
filterPiPars = ""
if (reqPropsObj.hasHttpPar("priority")):
priority = reqPropsObj.getHttpPar("priority")
if (reqPropsObj.hasHttpPar("url")):
url = reqPropsObj.getHttpPar("url")
ngamsSubscriber.validate_url(url)
else:
errMsg = genLog("NGAMS_ER_CMD_SYNTAX",
[NGAMS_SUBSCRIBE_CMD, "Missing parameter: url"])
raise Exception, errMsg
if (reqPropsObj.hasHttpPar("start_date")):
tmpStartDate = reqPropsObj.getHttpPar("start_date").strip()
if tmpStartDate:
startDate = fromiso8601(tmpStartDate, local=True)
if (reqPropsObj.hasHttpPar("filter_plug_in")):
filterPi = reqPropsObj.getHttpPar("filter_plug_in")
if (reqPropsObj.hasHttpPar("plug_in_pars")):
filterPiPars = reqPropsObj.getHttpPar("plug_in_pars")
if (reqPropsObj.hasHttpPar("subscr_id")):
id = reqPropsObj.getHttpPar("subscr_id")
else:
id = ngamsLib.getSubscriberId(url)
logger.info("Creating subscription for files >= %s", toiso8601(startDate))
subscrObj = ngamsSubscriber.ngamsSubscriber(srvObj.getHostId(),
srvObj.getCfg().getPortNo(),
priority,
url,
startDate,
filterPi,
filterPiPars,
subscrId=id)
# supports concurrent file transfer, added by [email protected]
if (reqPropsObj.hasHttpPar("concurrent_threads")):
concurthrds = reqPropsObj.getHttpPar("concurrent_threads")
subscrObj.setConcurrentThreads(concurthrds)
# If the Start Date given in before the Last Ingestion Date, we
# reset the Last Ingestion Date
subscrStat = srvObj.getDb().getSubscriberStatus([subscrObj.getId()],
subscrObj.getHostId(),
subscrObj.getPortNo())
if subscrStat:
lastIngDate = subscrStat[0][1]
if startDate < lastIngDate:
subscrObj.setLastFileIngDate(None)
else:
subscrObj.setLastFileIngDate(lastIngDate)
# Register the Subscriber.
addSubscriber(srvObj, subscrObj)
# Trigger the Data Susbcription Thread to make it check if there are
# files to deliver to the new Subscriber.
srvObj.addSubscriptionInfo([], [subscrObj]).triggerSubscriptionThread()
return "Handled SUBSCRIBE command"
def handleCmd(srvObj, reqPropsObj, httpRef):
"""
Handle SUBSCRIBE Command.
srvObj: Reference to NG/AMS server class object (ngamsServer).
reqPropsObj: Request Property object to keep track of actions done
during the request handling (ngamsReqProps).
httpRef: Reference to the HTTP request handler
object (ngamsHttpRequestHandler).
Returns: Void.
"""
"""
if (srvObj.getDataMoverOnlyActive() and len(srvObj.getSubscriberDic()) > 0):
srvObj.reply(reqPropsObj, httpRef, NGAMS_HTTP_SUCCESS, NGAMS_FAILURE,
"Data Mover NGAS server can have only one subscriber. Use command USUBSCRIBE to update an existing subscriber.")
return
"""
priority = 10
url = ""
startDate = time.time()
filterPi = ""
filterPiPars = ""
if (reqPropsObj.hasHttpPar("priority")):
priority = reqPropsObj.getHttpPar("priority")
if (reqPropsObj.hasHttpPar("url")):
url = reqPropsObj.getHttpPar("url")
ngamsSubscriber.validate_url(url)
else:
errMsg = genLog("NGAMS_ER_CMD_SYNTAX",
[NGAMS_SUBSCRIBE_CMD, "Missing parameter: url"])
raise Exception(errMsg)
if (reqPropsObj.hasHttpPar("start_date")):
tmpStartDate = reqPropsObj.getHttpPar("start_date").strip()
if tmpStartDate:
startDate = fromiso8601(tmpStartDate, local=True)
if (reqPropsObj.hasHttpPar("filter_plug_in")):
filterPi = reqPropsObj.getHttpPar("filter_plug_in")
if (reqPropsObj.hasHttpPar("plug_in_pars")):
filterPiPars = reqPropsObj.getHttpPar("plug_in_pars")
if (reqPropsObj.hasHttpPar("subscr_id")):
id = reqPropsObj.getHttpPar("subscr_id")
else:
id = ngamsLib.getSubscriberId(url)
logger.info("Creating subscription for files >= %s", toiso8601(startDate))
subscrObj = ngamsSubscriber.ngamsSubscriber(srvObj.getHostId(),
srvObj.getCfg().getPortNo(),
priority,
url,
startDate,
filterPi,
filterPiPars,
subscrId=id)
# supports concurrent file transfer, added by [email protected]
if (reqPropsObj.hasHttpPar("concurrent_threads")):
concurthrds = reqPropsObj.getHttpPar("concurrent_threads")
subscrObj.setConcurrentThreads(concurthrds)
# If the Start Date given in before the Last Ingestion Date, we
# reset the Last Ingestion Date
#
# TODO (rtobar, May 2021):
# This bit of logic seems to be in contention with the fact that adding
# a subscription with an ID that is already taken would be otherwise a
# failure. I'm leaving it here for the time being in order to avoid
# breaking anything, but it must probably be removed (or clarification
# should be sought otherwise).
subscrStat = srvObj.getDb().getSubscriberStatus([subscrObj.getId()],
subscrObj.getHostId(),
subscrObj.getPortNo())
if subscrStat and subscrStat[0][1]:
lastIngDate = fromiso8601(subscrStat[0][1], local=True)
if startDate < lastIngDate:
subscrObj.setLastFileIngDate('')
else:
subscrObj.setLastFileIngDate(lastIngDate)
# Register the Subscriber.
existence_test = addSubscriber(srvObj, subscrObj)
if existence_test == 'equal':
return 201, NGAMS_SUCCESS, "Identical subscription with ID '%s' existed" % (
id, )
elif existence_test == 'unequal':
return 409, NGAMS_FAILURE, "Different subscription with ID '%s' existed" % (
id, )
return "Handled SUBSCRIBE command"
