Python DataStore.updateRecordAsInProcess方法代码示例

# 需要导入模块: from datastore import DataStore [as 别名]
# 或者: from datastore.DataStore import updateRecordAsInProcess [as 别名]
def analyzeBWFFile(dbPath, identifier = 1):
	
	logging = DefaultLogger()
	loopcount = 0
	datastore = DataStore(dbPath)

	try:

		while True:

			sleep(60+random.randint(1,10))

			if loopcount % 20 == 0:
				logging.debug('bwf analyzer loop {} is active...'.format(identifier))
			loopcount += 1

			if not os.path.exists(dbPath):
				logging.debug('Acquire File: can not find database at path')
				return
		
			record =  None

			#if daisy is not up then just wait until it is
			if isDaisyUp() == False:
				logging.debug('Daisy does not appear to be up')
				continue

			#get a lock on the file
			lock = lockWithFile()
			try:
				lock.acquire(timeout=-1)
				if lock.i_am_locking():  
					record = datastore.oneRecordReadyForProcessing()
					if record != None:
						logging.debug('process {} is acquiring the lock'.format(identifier))
						datastore.updateRecordAsInProcess(record.id)
				lock.release()
			except Exception as e:
				pass

			if record == None:
				continue

			filePath = record.fileName

			#lets check that is has a genuine Daisy Number
			if getDaisyNumber(os.path.basename(filePath)) == None:
				errorBox = configurationOptions().defaultPathStructure()['errorBox']
				errorBox = os.path.expanduser(errorBox)	
				sendProcessFailureMessage({'subject':'BWF Error: file added that has no DANumber', 'message':'A file, %s, was deposited that does not have a Daisy Number' % (os.path.basename(filePath))})
				
				#move to errorBox
				try:
					print "Moving file %s into %s" % (filePath, errorBox)
					newPath = pathAfterSafelyMovingFileToDestinationFolder(filePath, errorBox)
				except Exception as e:
					logging.debug('Analyze File: Error moving file')
					info = '''This should not happen as pathAfterSafelyMovingFileToDestinationFolder should create a unique name that avoids any collisions, otherwise the file has been moved'''
					logging.debug(info)
					info = 'There was a problem moving the file into into the errorBox for: ' + os.path.basename(filePath)
					info = info + '\n' + 'This will require manual intervention as the occurrence is unique.'
					sendProcessFailureMessage({'subject':'BWF Error', 'message':info})
					logging.debug(info)

				datastore.updateRecordAsNotHavingADaisyNumber(record.id)
				continue

			#lets look up metadata before we even proceed, if can't get the metadata we don't want to analyze files
			dataTuple = retrieveDataForDANumber(os.path.basename(filePath), identifier)
			logging.debug('Data for {} Before: {}'.format(os.path.basename(filePath), dataTuple))

			if dataTuple == None:
				#ok, lets send an email that will be sent at a maximum of 1 per 4 hours
				result = "Process Error: Daisy Information not Available:" + e.message
				sendPeriodicFailureMessage(result)
				logging.debug('A Periodic Failure Message attempt was made.')
				continue

			result = None
			resultObject = None
			vendor = dataTuple[0]
			comments = dataTuple[1]
			status = dataTuple[2]
			
			#once we have the metadata, lets examine the file
			try:
				logging.debug('Will examine %s in loop %s' % (filePath, str(identifier)))
				resultObject = multiChannelBWFFileAnalysis(filePath)
				result = json.dumps(resultObject)
				if resultObject == None:
					logging.debug('The analysis of the file %s is "None". This should not occur.' % (filePath))
					raise Exception('The analysis of the file %s is "None". This should not occur.' % (filePath))
			except Exception as e:
				logging.debug('An exception occurred with %s in identifier %s.' % (filePath, str(identifier)))
				#mark as error
				datastore.updateRecordWithAnalysisError(record.id)
				errorBox = configurationOptions().defaultPathStructure()['errorBox']
				errorBox = os.path.expanduser(errorBox)
				
				#send email
#.........这里部分代码省略.........