def processSites (self,recordList,sitesName):
try:
for record in recordList:
sites_exist = None
try:
where = and_(testTPWDmodel.Sites.Latitude==record['start_latitude_num'],
testTPWDmodel.Sites.Longitude==record['start_longitude_num'])
sites_exist = self.session.query(testTPWDmodel.Sites).filter(where).one()
except NoResultFound, e:
newSite = testTPWDmodel.Sites()
newSite.SiteID = self.getMaxId('Sites')
# mkey = md5.new()
# mkey.update(str(record['start_latitude_num'])+str(record['start_longitude_num']))
# mStr = mkey.hexdigest()
SiteCode_I = ''.join([major_area_str,record['major_area_code'],
minor_bay_str,record['minor_bay_code'],
station_str,record['station_code']])
newSite.SiteCode = unicode('_'.join([SiteCode_I,str(newSite.SiteID)]))
#here, changing to name-looking function later
#sites name is based on the csv file name processed
newSite.SiteName = TPWDSitesDict[sitesName.split('_')[0]]
###################################
newSite.Latitude,newSite.Longitude = float(record['start_latitude_num']),float(record['start_longitude_num'])
newSite.LatLongDatumID= 2
newSite.VerticalDatum = u'Unknown'
newSite.State = u'Texas'
self.session.add(newSite)
self.session.flush()
record['SiteID'] = newSite.SiteID
else:
record['SiteID'] = sites_exist.SiteID
self.session.commit()
reticLog.logInfo(self.logList, "( " + self.name + " ) sites info processed on sink : " + self.name)
return 0
def __init__ (self, args, logList):
try:
self.logList = []
self.logList = logList
self.name = args['name']
self.exitOnError = 'y'
reticLog.logInfo(self.logList, '( ' + self.name + ' ) ' + "Intitializing fileSource")
self.fileFilter = args['fileFilter']
self.newExtension = args['newExtension']
self.msgList = []
self.metadata = {}
self.nbMsg = 0
self.msg = ''
self.msgName = ''
self.filePath = args['filePath']
#this is used for wait(interval) function, so use float
self.interval = float(args['pollPeriod'])
#here,determine the os path seperator, '\\' for nt, '/' for linux
import os
self.filePath = self.filePath + os.sep
if args.has_key('exitOnError'):
self.exitOnError = args['exitOnError']
except KeyError:
reticLog.logError(self.logList, '( ' + self.name + ' ) ' + "Error on fileSource initialization")
reticLog.logError(self.logList, '( ' + self.name + ' ) ' + "Parameter " + str(sys.exc_info()[1]) + " is missing on source definition" )
sys.exit(1)
except:
errorMessage = traceback.format_exception_only(sys.exc_info()[0],sys.exc_info()[1])[0]
reticLog.logError(self.logList, '( ' + self.name + ' ) ' + "Unknown error on initialization on source")
reticLog.logError(self.logList, '( ' + self.name + ' ) ' + errorMessage)
sys.exit(1)
def __init__ (self, args, logger):
try:
self.logList = logger
self.name = args['name']
reticLog.logInfo(self.logList, '( ' + self.name + ' ) ' + "Intitializing HTTPSource : " + self.name)
self.URL = args['URL']
self.exitOnError = 'n'
self.msgList = []
self.nbMsg = 0
self.msg = []
self.msgName = ''
self.params = []
self.metadata = {}
#this is used for wait(interval) function, so use float
if args.has_key('pollPeriod'):
self.interval = float(args['pollPeriod'])
if args.has_key('params'):
self.params = args['params']
if args.has_key('exitOnError'):
self.exitOnError = args['exitOnError']
except KeyError:
reticLog.logError(self.logList, '( ' + self.name + ' ) ' + "Error on HTTPSource initialization")
reticLog.logError(self.logList, '( ' + self.name + ' ) ' + "Parameter " + str(sys.exc_info()[1]) + " is missing on source definition" )
sys.exit(1)
except:
reticLog.logError(self.logList, '( ' + self.name + ' ) ' + "Unknown error on HTTPSource initialization")
reticLog.logError(self.logList, '( ' + self.name + ' ) ' + traceback.format_exception_only(sys.exc_info()[0],sys.exc_info()[1]))
raise
sys.exit(1)
def process (self):
'Creates the XML file in the output buffer'
try:
self.tmpMsg = StringIO.StringIO()
self.updateAttributesFromMetadata()
if self.hasHeader == 'y':
self.fieldNames = self.getHeader()
self.tmpMsg.write('<?xml version=\"1.0\" encoding=\"' + self.encoding + '\"?>')
self.tmpMsg.write('\n<' + self.rootTag + '>\n')
current_record = self.InMsg.readline()
#print current_record
while len(current_record) > 0 :
#print current_record
if current_record[0] == '#' :
current_record = self.InMsg.readline()
continue
if current_record[-1] == '\n':
self.writeRecordAsXML(current_record[:-1])
else:
self.writeRecordAsXML(current_record)
current_record = self.InMsg.readline()
self.tmpMsg.write('</' + self.rootTag + '>')
self.tmpMsg.seek(0)
self.msg = self.tmpMsg.read()
#print self.msg
self.msgList.append(self.msg)
#print type(self.msgList)
reticLog.logInfo(self.logList, '(' + self.name + ') ' + "Message process is finished in pipe")
return 0
except:
errorMessage = traceback.format_exception_only(sys.exc_info()[0],sys.exc_info()[1])[0]
reticLog.logError(self.logList, '(' + self.name + ') ' + "Error during message processing in pipe")
reticLog.logError(self.logList, '(' + self.name + ') ' + errorMessage)
return 1
def preprocess(filename,loglist):
"""
function that does preprocessing TPWD file.(in CSV format)
main functionality:
1. extract columns needed.
2. combine repetitive rows (after extract the needed columns)
3. sort all rows on chronological order
4. from the results of step 1) 2) 3); save a copy of the csv file,
and add a timestamp at the end of it
for this specific case (TPWD), there are 2 more operations performed:
a) transfer time into correct date format;
b) transfer longitude and latitude into correct decimal format
"""
#open a csv reader
TPWDReader = csv.reader(open(filename))
#start processing
reticLog.logInfo(loglist, "start preprocessing %s......" % filename.split(os.sep)[-1])
#extract the columns needed:
#more pythonic way:
#print "extracting needed columns......",
extractedList = list(list(row[i] for i in NEEDED_COL) for row in TPWDReader)
#print "done"
#transfer date
#headerRow : the name of all the columns, do not need to change.
#recordRows : actual data part, need to change
headerRow,recordRows = extractedList[0],extractedList[1:]
#sort the output list on timely basis
#if times are the same, sort on latitude,longitude
#print "sort rows based on completion time......",
#print "done"
#eliminate duplicate rows
#print "eliminating duplicated rows......",
groupByList=list(row for row,group in itertools.groupby(recordRows))
groupByList.sort(date_compare)
#print "done"
#convert time to datetime format
#convert longitude, latitude to decimal format
#print "convert date and geological coordinates......",
for row in groupByList:
row[NEEDED_COL.index(DATE)]= str(datetime.datetime.strptime(row[NEEDED_COL.index(DATE)][:-4],'%d%b%Y:%H:%M:%S'))
row[NEEDED_COL.index(LONGITUDE)] = GotoDecimal(row[NEEDED_COL.index(LONGITUDE)],True)
row[NEEDED_COL.index(LATITUDE)] = GotoDecimal(row[NEEDED_COL.index(LATITUDE)])
#print "done"
#now add header row back
groupByList.insert(0,headerRow)
#print "%d non-duplicated records generated" % len(groupByList)
#outputfile name process: add time stamp to the
fileSplit = filename.split('.')
#here, timestamp precesion: minutes, concatenated with underscore
fileSplit[0] = string.join([fileSplit[0].split('_')[-2],datetime.datetime.now().strftime("%Y%m%d%H%M")],'_')
outFileName = ''.join([localPath,
string.join(fileSplit,'.').split(os.sep)[-1]])
#write output file
#print "write output file with timestamp (%s)......" % outFileName,
#Write in binary mode to avoid the extra newline character
outWriter = csv.writer(open(outFileName, "wb"))
outWriter.writerows(groupByList)
reticLog.logInfo(loglist, "preprocessing %s is done." % filename.split(os.sep)[-1])
def getMsg (self, messages):
"""
for TCEQ, every time, it passes in 2 message StringIO object, one for event, another for result
"""
try:
reticLog.logInfo(self.logList, "( " + self.name + " ) Retrieving message for sink : " + self.name)
# Re-initialize msg to get new message
# eventString IO is message[0], resultStringIO is messag[1]
# get a mini hash table for each segment:
# key: RFA tag id,
# value: [event list, result list]
self.basinSegmentInfo = {}
eventCSVList = csv.reader(messages[0],delimiter="|")
resultCSVLIst = csv.reader(messages[1],delimiter="|")
# raw_input("print event...")
# for row in eventCSVList:
# print row
# raw_input("print result...")
# for row in resultCSVLIst:
# print row
for row in eventCSVList:
#this is for basiID 6, year 2010
if (row[0] == "" and row[1] == "" and row[2] == ""):
row = row[3:]
print row
self.basinSegmentInfo[row[RFATAG_COLUMN]] = {}
self.basinSegmentInfo[row[RFATAG_COLUMN]][EVENT_IN_HASHTable] = row
for row in resultCSVLIst:
if self.basinSegmentInfo[row[RFATAG_COLUMN]].has_key(RESULT_IN_HASHTable):
self.basinSegmentInfo[row[RFATAG_COLUMN]][RESULT_IN_HASHTable].append(row)
else:
#if this is the first result row for this RFATAG
self.basinSegmentInfo[row[RFATAG_COLUMN]][RESULT_IN_HASHTable] = [row]
# resultCounter,eventCounter = 0,0
# for key in self.basinSegmentInfo.keys():
# #print "key => ",self.basinSegmentInfo[key]
# eventCounter += 1
# for resultRow in self.basinSegmentInfo[key][RESULT_IN_HASHTable]:
# #print resultRow
# resultCounter += 1
# #print "%d result in Total......" % eventCounter
# print "%d result in Total......" % resultCounter
reticLog.logInfo(self.logList, "( " + self.name + " ) Message retrieved in sink : " + self.name)
return 0
except Exception, e:
import traceback
#if row[RFATAG_COLUMN] in self.basinSegmentInfo:
# print "In Dictionary Already!"
#else:
# print "Not In Dictionary!"
traceback.print_exc(file=sys.stdout)
errorMessage = traceback.format_exception_only(sys.exc_info()[0],sys.exc_info()[1])[0]
reticLog.logError(self.logList, "( " + self.name + " ) Error during message retrieval in sink : " + self.name)
reticLog.logError(self.logList, "( " + self.name + " ) " + errorMessage)
return 1
def start (self):
'Start the source of the adaptor (begin work...)'
try:
reticLog.logInfo(self.logList, '( ' + self.name + ' ) ' + "Starting the source adaptor")
self.getMsg()
return 0
except:
errorMessage = traceback.format_exception_only(sys.exc_info()[0],sys.exc_info()[1])[0]
reticLog.logError(self.logList, '( ' + self.name + ' ) ' + "Unknown error on start of source")
reticLog.logError(self.logList, '( ' + self.name + ' ) ' + errorMessage)
sys.exit(1)
def prepareUpdateObject(self, recordList,processInfo):
reticLog.logInfo(self.logList, "( " + self.name + " ) prepareUpdateObject Start")
#object list, to be add to session/real database
objects = []
for record in recordList:
#here add sites name here for time stamp comparison
#not processed data, so we process here
result = processInfo(record)
for ob in result:
objects.append(ob)
reticLog.logInfo(self.logList, "( " + self.name + " ) prepareUpdateObject End")
print "%d data value objects generated" % len(objects)
return objects
def getMsg (self, message):
try:
reticLog.logInfo(self.logList, "( " + self.name + " ) Retrieving message for sink : " + self.name)
# Re-initialize msg to get new message
self.msg = ''
self.msg = message
reticLog.logInfo(self.logList, "( " + self.name + " ) Message retrieved in sink : " + self.name)
return 0
except:
errorMessage = traceback.format_exception_only(sys.exc_info()[0],sys.exc_info()[1])[0]
reticLog.logError(self.logList, "( " + self.name + " ) Error during message retrieval in sink : " + self.name)
reticLog.logError(self.logList, "( " + self.name + " ) " + errorMessage)
return 1
def getMsg (self, message):
'Initializes input buffer with message content'
try:
reticLog.logInfo(self.logList, '(' + self.name + ') ' + "Getting message into pipe")
self.InMsg = StringIO.StringIO()
self.msg = ''
self.InMsg.write(message)
self.InMsg.seek(0)
return 0
except:
errorMessage = traceback.format_exception_only(sys.exc_info()[0],sys.exc_info()[1])[0]
reticLog.logError(self.logList, '(' + self.name + ') ' + "Error during message retrieval in pipe" )
reticLog.logError(self.logList, '(' + self.name + ') ' + errorMessage)
return 1
def getRecordList(self):
"""Extraction of the fields and values to map to the SQL statement.
The method returns a list of dictionnaries"""
reticLog.logInfo(self.logList, "( " + self.name + " ) getRecordList Start")
msg = StringIO.StringIO()
msg.write(self.msg)
#print msg
msg.seek(0)
recordList = []
msgFormat = ''
xmlRoot = None
if self.metadata.has_key(msgFormat) :
if self.metadata['msgFormat'] == 'xml':
xmlRoot = ElementTree(msg)
msgFormat = 'xml'
else:
msgFormat = 'flat'
if msgFormat == '':
try:
xmlRoot = ElementTree(file=msg)
msgFormat = 'xml'
except:
msgFormat = 'flat'
reticLog.logDebug(self.logList, "Input format detected : " + msgFormat)
# I am here
if msgFormat == 'xml':
recNb = 0
#Create an iterator
iter = xmlRoot.getiterator()
#traverse the xml tree
for element in iter:
if element.getchildren():
for child in element.getchildren():
prepRecord = {}
if child.getchildren():
for subChild in child.getchildren():
prepRecord[subChild.tag] = subChild.text
recordList.append(prepRecord)
reticLog.logDebug(self.logList, "All records processed.")
#here for processing flat file
elif msgFormat == 'flat':
raise Exception('Do not support flat file at this time')
reticLog.logInfo(self.logList, "( " + self.name + " ) getRecordList End")
return recordList
def connect (self, args):
'Establish a connection with the database'
try:
reticLog.logInfo(self.logList, "Intitializing Database Connection : " + args['dsn'])
#construct connection string according to parameters
engineStr = string.join([args['dbType'],
''.join(['//', args['user']],),
''.join([args['password'],"@",args['dsn']]) ],
':')
#print engineStr
dbDriverMod = __import__(args['driverName'])
self.engine = create_engine(engineStr, module=dbDriverMod)
reticLog.logInfo(self.logList, "DataBase Connection established")
except:
errorMessage = traceback.format_exception_only(sys.exc_info()[0],sys.exc_info()[1])[0]
reticLog.logError(self.logList, "Database error : " + errorMessage ); raise "Database Error";
def next(self):
'Get the next message to be processed or return that sources are dry'
if self.nbMsg == 0:
return 0
else:
reticLog.logInfo(self.logList, '( ' + self.name + ' ) ' + "Messages Left on queue of adaptor : " + str(self.nbMsg))
# No params are provided, processing raw URL. (without GET/POST request)
if len(self.params) == 0:
reticLog.logInfo(self.logList, '( ' + self.name + ' ) ' + "Retrieving message from : " + self.URL)
try:
request = urllib2.Request(self.URL)
connection = urllib2.urlopen(request)
self.msg.append(connection.read())
reticLog.logInfo(self.logList, '( ' + self.name + ' ) ' + "Message retrieved on adaptor: " + self.name)
except:
errorMessage = traceback.format_exception_only(sys.exc_info()[0],sys.exc_info()[1])[0]
reticLog.logError(self.logList, '( ' + self.name + ' ) ' + "Error on message retrieval on source : " + self.name)
reticLog.logError(self.logList, '( ' + self.name + ' ) ' + errorMessage)
if self.exitOnError.lower() == 'y':
sys.exit(1)
else:
self.msg = []
for param in self.params:
# Params are provided, processing URL passing them through GET method
# There are as many calls as there are param lists
paramLine = '?'
for key in param.keys():
self.metadata[key] = param[key]
paramLine = urlencode(self.metadata)
reticLog.logInfo(self.logList, '( ' + self.name + ' ) ' + "Retrieving message from : " + self.URL+"?" + paramLine)
successful = False
while not successful:
try:
request = urllib2.Request("?".join([self.URL,paramLine]))
connection = urllib2.urlopen(request)
self.msg.append(connection.read())
reticLog.logInfo(self.logList, '( ' + self.name + ' ) ' + "Message retrieved on adaptor: " + self.name)
except:
errorMessage = traceback.format_exception_only(sys.exc_info()[0],sys.exc_info()[1])[0]
reticLog.logError(self.logList, '( ' + self.name + ' ) ' + "Error on message retrieval on source : " + self.name)
reticLog.logError(self.logList, '( ' + self.name + ' ) ' + errorMessage)
if self.exitOnError.lower() == 'y':
sys.exit(1)
else:
successful = True
return 1
def updateDB(self, objects):
reticLog.logInfo(self.logList, "( " + self.name + " ) Starting update objects from sink : " + self.name)
count = 0
for ob in objects :
retries = self.retries
execOk = 0
ob.ValueID = self.getMaxId('DV')
try:
where = and_(testTPWDmodel.DataValues.DataValue==ob.DataValue,
testTPWDmodel.DataValues.LocalDateTime==ob.LocalDateTime,
testTPWDmodel.DataValues.SiteID==ob.SiteID,
testTPWDmodel.DataValues.VariableID==ob.VariableID)
valueExist = self.session.query(testTPWDmodel.DataValues).filter(where).one()
#this record does not exist,insert it
except NoResultFound, e:
while retries >= 0 and execOk == 0:
try:
############
self.session.add(ob)
self.session.flush()
execOk = 1
#this is the handler for some violation of unique constriant on keys
except exc.OperationalError:
print "DB constraint violation happen"
self.session.rollback()
continue
#execOk = 0
# retries = retries - 1
#this is the handler or invalid request error
except exc.InvalidRequestError:
print "DB constraint violation happen"
self.session.rollback()
continue
#raise
if execOk == 0 and retries < 0:
raise "Database Exception : all retries failed"
elif execOk == 1:
print "recordNo == >", ob.ValueID, "generated"
count += 1
else:
errorMessage = traceback.format_exception_only(sys.exc_info()[0],sys.exc_info()[1])[0]
reticLog.logWarning(self.logList, "Database Update failed : " + errorMessage)
#this record exists, skip it
else:
print "record skipped"
continue
def commit(self):
'Commit the current message treatment'
if self.nbMsg > 0 :
reticLog.logInfo(self.logList, '( ' + self.name + ' ) ' + "Commiting msg " + self.msgList[0] + " on source : " + self.name)
msgName = self.msgList[0]
try:
#if self.newExtension != '' and self.newExtension != ' ':
#shutil.copyfile(self.filePath+self.msgName,self.filePath+self.msgName+self.newExtension)
shutil.os.remove(self.filePath+self.msgName)
self.nbMsg = self.nbMsg - 1
self.msgList = self.msgList[1:]
self.msg = ''
return 0
except:
errorMessage = traceback.format_exception_only(sys.exc_info()[0],sys.exc_info()[1])[0]
reticLog.logError(self.logList, '( ' + self.name + ' ) ' + "Error on commit phase on source - File : " + msgName)
reticLog.logError(self.logList, '( ' + self.name + ' ) ' + errorMessage)
return 1
else:
return 1
def preprocess_batch(directoryName,loglist):
"""Find the fold under secific location(direcotryPath) with the largest time stamp;
and preprocess each csv file inside it
"""
reticLog.logInfo(loglist,"Starting TPWD preprocessing procedure")
import glob
#get the fold with the largest timestamp
max_datetime = None
folderToProcess = None
for name in glob.glob('%s/request_*' % directoryName):
import datetime
year,month,day = int(name.split('request')[1][1:][0:4]), \
int(name.split('request')[1][1:][4:6]), \
int(name.split('request')[1][1:][6:8])
tempDateTime = datetime.datetime(year,month,day)
if (not max_datetime) or (tempDateTime > max_datetime):
max_datetime = tempDateTime
folderToProcess = name
#at this point, folderToProcess should have the folder name of the latest timestamp
reticLog.logInfo(loglist, 'preprocess folder: %s, with requested time %s' % (folderToProcess,str(max_datetime)) )
#so preprocess each file inside folderToProcess
for name in glob.glob('%s/*.csv' % folderToProcess):
preprocess(name,loglist)
def next(self):
'Get the next message to be processed or return that sources are dry'
if self.nbMsg == 0:
reticLog.logInfo(self.logList, '( ' + self.name + ' ) ' + "Sources dry on source ")
return 0
else:
try:
reticLog.logInfo(self.logList, '( ' + self.name + ' ) ' + "Messages Left on queue of adaptor : " + str(self.nbMsg))
reticLog.logInfo(self.logList, '( ' + self.name + ' ) ' + "Retrieving file : " + self.msgList[0])
self.msgName = self.msgList[0]
dotIndex = string.find(self.msgName,'.')
if dotIndex > 0:
if(not self.metadata.has_key('filename')):
self.metadata['filename'] = []
self.metadata['filename'].append(string.split(self.msgName,'.')[0])
self.metadata['extension'] = string.split(self.msgName,'.')[1]
else:
if(not self.metadata.has_key('filename')):
self.metadata['filename'] = []
self.metadata['filename'] = self.msgName
self.metadata['extension'] = ''
#file reading happend here
fp = open(os.path.join(self.filePath,self.msgList[0]))
if reticUtils.istext(fp):
fp.close()
fp = open(os.path.join(self.filePath,self.msgList[0]),'r')
else:
fp.close()
fp = open(os.path.join(self.filePath,self.msgList[0]),'rb')
self.msg = fp.read()
fp.close()
return 1
except:
errorMessage = traceback.format_exception_only(sys.exc_info()[0],sys.exc_info()[1])[0]
reticLog.logError(self.logList, '( ' + self.name + ' ) ' + "Error on message retrieval on source : " + self.name)
reticLog.logError(self.logList, '( ' + self.name + ' ) ' + errorMessage)
if self.exitOnError.lower() == 'y':
return 0
else:
return 1
def start (self):
"""Start the source of the adaptor (begin work...)"""
reticLog.logInfo(self.logList, '( ' + self.name + ' ) ' + "Starting the http source adaptor")
self.getMsg()
return 0
def updateDB(self,methodLookUpfile):
reticLog.logInfo(self.logList, "( " + self.name + " ) Starting update objects from sink : " + self.name)
count = 0
for key in self.basinSegmentInfo.keys():
#need this because for some years (eg: 1973), there is no data collected in result file
if self.basinSegmentInfo[key].has_key(RESULT_IN_HASHTable) and len(self.basinSegmentInfo[key][RESULT_IN_HASHTable]) >= VALUE :
for resultRow in self.basinSegmentInfo[key][RESULT_IN_HASHTable]:
retries = self.retries
execOk = 0
try:
import datetime
ValueID = self.getMaxId('DV')
DataValue = float(resultRow[VALUE])
LocalDateTime = datetime.datetime.strptime(" ".join([self.basinSegmentInfo[key][EVENT_IN_HASHTable][DATE],
self.basinSegmentInfo[key][EVENT_IN_HASHTable][TIME]]),
"%m/%d/%Y %H:%M")
SiteID = self.lookUpSite(self.basinSegmentInfo[key][EVENT_IN_HASHTable][SITECODE])
VariableID = self.lookUpVariableID(resultRow[VARIABLECODE])
if not self.basinSegmentInfo[key][EVENT_IN_HASHTable][OFFSETDEPTH] == "":
OffsetValue = float(self.basinSegmentInfo[key][EVENT_IN_HASHTable][OFFSETDEPTH])
else:
OffsetValue = float(-9999)
CensorCode = u'nc'
#find method id
import anydbm
methodDBMfile = anydbm.open(methodLookUpfile, 'r')
MethodDescription = methodDBMfile[resultRow[VARIABLECODE]]
MethodID = self.lookUpMethodID(MethodDescription)
#for production databse:
#SourceID = 1
where = and_(DataValues.DataValue == DataValue,
DataValues.LocalDateTime== LocalDateTime,
DataValues.SiteID== SiteID,
DataValues.VariableID == VariableID,
DataValues.OffsetValue == OffsetValue,
DataValues.MethodID == MethodID)
valueExist = self.session.query(DataValues).filter(where).one()
#this DataValue record does not exist,insert it
except NoResultFound, e:
while retries >= 0 and execOk == 0:
try:
############
newDataValueRecord = DataValues(ValueID,DataValue,LocalDateTime,SiteID,VariableID,OffsetValue,MethodID)
self.session.add(newDataValueRecord)
self.session.flush()
execOk = 1
#this is the handler for some violation of unique constriant on keys
except exc.OperationalError:
print "DB constraint violation happen"
self.session.rollback()
#execOk = 0
# retries = retries - 1
#this is the handler or invalid request error
except exc.InvalidRequestError:
print "DB constraint violation happen"
self.session.rollback()
#raise
if execOk == 0 and retries < 0:
raise "Database Exception : all retries failed"
elif execOk == 1:
print "recordNo == >", newDataValueRecord.ValueID, "generated"
count += 1
else:
errorMessage = traceback.format_exception_only(sys.exc_info()[0],sys.exc_info()[1])[0]
reticLog.logWarning(self.logList, "Database Update failed : " + errorMessage)
except TCEQRecordNotFoundError, e:
errorMessage = str(e)
reticLog.logWarning(self.logList, "Database Update failed : " + errorMessage)
#this record exists, skip it
except Exception, e:
traceback.print_exc(file=sys.stdout)
print resultRow
raise
else:
print "record found, need to skip this record (may be wrong behavior....)"
count += 1
else:
errorMessage = traceback.format_exception_only(sys.exc_info()[0],sys.exc_info()[1])[0]
reticLog.logWarning(self.logList, "Database Update failed : " + errorMessage)
except TCEQRecordNotFoundError, e:
errorMessage = str(e)
reticLog.logWarning(self.logList, "Database Update failed : " + errorMessage)
#this record exists, skip it
except Exception, e:
traceback.print_exc(file=sys.stdout)
print resultRow
raise
else:
print "record found, need to skip this record (may be wrong behavior....)"
#end big for loop
reticLog.logInfo(self.logList, "( " + self.name + " ) Number DB record (%d) added : " % count + self.name)
reticLog.logInfo(self.logList, "( " + self.name + " ) Update of Databases ended in sink : " + self.name)
#unit of work pattern, only commit one time
try:
self.session.commit()
#self.session.close()
reticLog.logInfo(self.logList, "( " + self.name + " ) Update commited")
except:
self.session.rollback()
#self.session.close()
reticLog.logWarning(self.logList, "Commit Failed in SQLSink")
#auto generate new record for new DataValues table record
def getMaxId(self,tabFlag):
maxid = 0
def main():
session = initDB()
#logger setup. Here, simply set a consloe logger
logAttDic = {'name': 'TCEQ sites and parameters importing for the first time',
'level': 'DEBUG',
'format':'Simple',
'handler':'ConsoleAppender'}
logList = []
reticLog.addLogger(logList,logAttDic)
#get sites list (a text file) from an HTTPSource
# and insert all the sites into the "Sites" table of ODM database
siteSrc_args = {}
siteSrc_args['name'] = "TCEQ sites httpsource"
siteSrc_args['URL'] = "ftp://ftp.tceq.state.tx.us/pub/WaterResourceManagement/WaterQuality/DataCollection/CleanRivers/public/stations.txt"
sitesHTTPSource = HTTPSource.source(siteSrc_args,logList)
sitesHTTPSource.start()
while(sitesHTTPSource.next()==1):
print "Content of this URL: %s" % sitesHTTPSource.URL
sitesFile = StringIO(sitesHTTPSource.msg[0])
sitesListReader = csv.reader(sitesFile, delimiter='|')
for index,row in enumerate(sitesListReader):
if index == 0:
continue
try:
newRecordSiteName = row[SITENAME] if len(row[SITENAME]) <= 255 else row[SITENAME][0:255]
where = and_(Sites.SiteCode == unicode(row[SITECODE])
,Sites.Latitude == float(row[LATITUDE])
,Sites.Longitude == float(row[LONGITUDE]))
valueExist = session.query(Sites).filter(where).one()
print "find record with SiteCode %s in database, skip it..." % row[SITECODE]
continue
#this site record does not exist, so insert it
except NoResultFound, e:
# This is for system robust
# retries is max number of insertion times, and execOk is to show whether update is successful
retries,execOk = 5,0
newSiteRecord = Sites(row[SITECODE],newRecordSiteName,
float(row[LATITUDE]),float(row[LONGITUDE]),row[COUNTY], \
";".join(["HUC 8 = ",row[HUC],"EPA_Type1 = ",row[TYPE1],"EPA_Type2 = ",row[TYPE2]]))
while retries >= 0 and execOk == 0:
try:
############
newSiteRecord.SiteID = getMaxId(session,"Sites")
session.add(newSiteRecord)
session.flush()
execOk = 1
#this is the handler for some violation of unique constriant on keys
except exc.OperationalError:
print "DB constraint violation happen"
session.rollback()
retries = retries - 1
continue
#this is the handler or invalid request error
except exc.InvalidRequestError:
print "DB constraint violation happen"
session.rollback()
retries = retries - 1
continue
if execOk == 0 and retries < 0:
raise "Database Exception : all retries failed"
elif execOk == 1:
print "inert new Site record with SiteCode ==> %s" % row[SITECODE]
else:
errorMessage = traceback.format_exception_only(sys.exc_info()[0],sys.exc_info()[1])[0]
reticLog.logWarning(logList, "Sites Table in Database Update failed : " + errorMessage)
#unit of work pattern, only commit one time
try:
session.commit()
reticLog.logInfo(logList, "( " + "TCEQ Sites" + " ) Update commited")
except:
session.rollback()
reticLog.logWarning(logList, "Commit Failed in SQLSink")
sitesHTTPSource.commit()
