class MysqlUtil(object, metaclass=Singleton):
def __init__(self, logger=None):
self.util = Utility()
self.globals = Global()
#self.env = Environment()
self.dbResponse = self.util.getACopy(
self.globals.Template['DBResponse'])
self.infra = RestInfra()
self.encryptKey = self.infra._Infra__bootStrapData['Main']['Key']
if logger:
self.logger = logger
else:
print('no logger is available, can not store logging information')
self.logger = None
# select @@port;
# show variables where variable_name = 'port'
# select user();
# insert json in mysql
# insert into temp values(json_array(json_object('id',1001,'when','2015-01-01 10:00:00','score',35), json_object('id',1002,'when','2015-02-01 10:00:00','score',45)) );
def makeConnection(self,
host,
port,
username,
encryptPass,
dbName,
tzone=None):
try:
#print('pass',self.util.decrypt(self.env.encryptPass))
conn = connect(host=host,
port=port,
user=username,
password=self.util.decrypt(self.encryptKey,
encryptPass),
database=dbName)
#print(conn)
# we need to set the timezone as requested for this connection
if tzone:
conn.time_zone = '+00:00'
return conn
except errors.Error as error:
#return self.util.buildDBResponse(self.globals.Error, None, None, error)
raise
except Exception as error:
raise
#return self.util.buildDBResponse(self.globals.Error, None, None, error)
def getRepDBConnection(self):
try:
#print('pass',self.util.decrypt(self.env.encryptPass))
conn = self.makeConnection(\
self.infra.dbConfigData['host'], \
self.infra.dbConfigData['port'], \
self.infra.dbConfigData['user'], \
self.infra.dbConfigData['password'], \
self.infra.dbConfigData['database'])
return conn
except Exception as error:
raise
#return self.util.buildDBResponse(self.globals.Error, None, None, error)
def execSelectSql(self, **args):
'''
Description: Execute Select statement
Arguments: Key word arguments
Conn : Connection handler
SqlText : Sql to be executed
SqlArgs : Arguments need to be passed to sql (optional), default = None (SqlArgs should be in dict)
SqlOutput : Sqloutput Dict/Touple (optional), default = Touple
Usage : execSelectSql(<connection>, <sql>, <sql args (optional)>, <sql output Dict/Touple (optional)> )
Return : Array
internal --> #mySqlArgs = ','.join(list(map(lambda x: '%s', args)))
'''
try:
myRequiredArgs = ['Conn', 'SqlText']
#Validating arguments
myArgValResult = self.util.valArguments(myRequiredArgs, args)
if myArgValResult['Status'] == self.globals.UnSuccess:
raise InvalidArguments(myArgValResult['Message'])
#extracting arguments
myDBConn = args['Conn']
mySqlText = args['SqlText']
if not mySqlText.upper().startswith(
('SELECT', 'INSERT', 'UPDATE', 'DELETE')):
raise InvalidArguments(
'SQL statement can be SELECT/INSERT/UPDATE/DELETE only')
mySqlArgs = args['SqlArgs'] if 'SqlArgs' in args else None
mySqlOutput = args[
'SqlOutput'] if 'SqlOutput' in args else self.globals.SqlOutput[
'Default']
if mySqlOutput not in self.globals.SqlOutput['All']:
mySqlOutput = self.globals.SqlOutput['Default']
# executing sql
print('Executing sql >>>', mySqlText, mySqlArgs)
myDBcur = myDBConn.cursor(buffered=True)
totalRows = myDBcur.execute(mySqlText, mySqlArgs)
if mySqlText.upper().startswith('SELECT'):
if myDBcur.with_rows: # if we got any data
myTotalRows = myDBcur.rowcount
#myCurDesc = myDBcur.description
myAllColumns = myDBcur.column_names
myRawData = myDBcur.fetchall()
# build the sqloutput
if mySqlOutput == self.globals.SqlOutput['Dict']:
#myAllColumns = [column[0] for column in myCurDesc]
myData = [
dict(zip(myAllColumns, row)) for row in myRawData
]
else:
myData = myRawData
else:
myData = None
elif mySqlText.upper().startswith(('INSERT', 'UPDATE', 'DELETE')):
pass
myDBcur.close()
return self.util.buildDBResponse(self.globals.Success, myData,
myTotalRows)
except errors.Error as error:
#return self.util.buildDBResponse(self.globals.Error, None, None, error)
raise
except Exception as error:
self.util.logError()
raise
#return self.util.buildDBResponse(self.globals.Error, None, None, error)
def commitTrans(self, dbConn):
try:
dbConn.commit()
except errors.Error as error:
return self.util.buildDBResponse(self.globals.Error, None, None,
error)
except Exception as error:
return self.util.buildDBResponse(self.globals.Error, None, None,
error)
def rollbackTrans(self, dbConn):
try:
dbConn.rollback()
except errors.Error as error:
return self.util.buildDBResponse(self.globals.Error, None, None,
error)
except Exception as error:
return self.util.buildDBResponse(self.globals.Error, None, None,
error)
def buildMarkerForSql(self, sqlText, argList, marker):
sqlArgMarker = ', '.join(list(map(lambda x: marker, args)))
return sqlText % sqlArgMarker
def buildDynaSql(self, colList, tableList, criteria):
if colList:
mySql = colList
# adding tables to sql
for indx, table in enumerate(tableList):
if indx > 0:
# found more than one table, we need to add ',' in from clause to seperate tables
mySql = ''.join([mySql, ' , ', table])
else:
mySql = ''.join([mySql, ' from ', table])
# adding where clause
if criteria:
mySql = ''.join([mySql, ' where ', criteria])
return mySql
class Factory(object, metaclass=Singleton):
'''
This is Factory class, this will execute a BO process as mapped in config/FactoryMetadata.json
'''
def __init__(self):
#self.util = Utility.Instance()
self.globals = Global()
self.util = Utility()
self.infra = RestInfra()
self.logger = self.infra.logger
#self.myClass = self.__class__.__name__
def processRequest(self, argRequestDict):
'''
Description: Update key in dictDocument for a given collection, this is a private method
argCollection: Collection name
argDictDocument:Dict documents
usage: <processRequest(argRequestDict)
'''
try:
self.logger.debug(
"arg received [{args}]".format(args=argRequestDict))
myMainArgData = self.util.getACopy(argRequestDict)
''' Validating argumemt received '''
isValidRequest = self.util.isValidRestRequest(myMainArgData)
if not (isValidRequest):
raise com.port8.core.error.InvalidArguments(
"Arg validation error {arg}".format(arg=myMainArgData))
else:
self.logger.debug(
'validated request, its a valid request >>> {req}'.format(
req=str(argRequestDict)))
#fi
myPageId = myMainArgData['Page']
myActionId = myMainArgData['Action']
myArguments = myMainArgData['Arguments']
myResult = self.__findBPSProcess(myPageId, myActionId)
if myResult['Status'] == self.globals.Success:
myBPMProcess = myResult['Data']
else:
# we did not find BPM process, returing result
return myResult
# extracting tuple value returned from above method
#myLibrary, myClass, myMethod = bpsProcessVal
if myBPMProcess:
self.logger.debug("found, bpm process [{bpmproc}]".format(
bpmproc=myBPMProcess))
myResponse = self.__executeBPSPRocess(myBPMProcess['lib'],
myBPMProcess['cls'],
myBPMProcess['method'],
myArguments)
#myRquestStatus = self.util.getRequestStatus(self.globals.Success)
else:
self.logger.debug("did not find mapped bpm process")
myRquestStatus = self.util.getRequestStatus(\
self.globals.UnSuccess,'Invalid Page [{page}] Action [{action}]'.format(page=myPageId, action=myActionId))
myResponse = self.util.buildResponseData(
myRquestStatus, 'Error')
self.logger.debug(
'myResponse data >>> {response}'.format(response=myResponse))
return myResponse
except Exception as err:
myRequestStatus = self.util.logError()
myResponse = self.util.buildResponseData(myRequestStatus, 'Error')
return myResponse
def __findBPSProcess(self, argPageId, argActionId):
'''
Description:This is private methd called internally in Factry class; Find BMP method call for a given request (pageid, actionid)
Arguments: pageid and action id (pageid, actionid)
Usage: <__findBPSProcess(<pageid>,<actionid>)>
Return: BPM_CALL_JSON dict {'cls': <class>, lib : <library>, method : <mehtod>, args : <arguments needed>}
'''
try:
self.logger.debug("arg received [{page},{action}]".format(
page=argPageId, action=argActionId))
page = [
page for page in self.infra.factoryMetadata
if page['PAGE_ID'] == argPageId
and page['PAGE_STATUS'] == 'ACTIVE'
]
# if we found multiple page, will log the details
if len(page) > 1:
self.logger.ERROR(
'Expecting 1 entry per page, found {found}, Factory metadata >> {factoryData}'
.format(found=len(page),
factoryData=self.infra.factoryData))
myResponse = self.util.buildResponse(\
self.globals.UnSuccess,
'Metadata is corrupted (found [{cnt}] occurrance of page [{page}]'\
.format(cnt = len(page), page=argPageId))
return myResponse
if len(page) == 0:
# we did not find page
self.logger.debug(
'did not find requested page >>> {page}'.format(
page=argPageId))
myResponse = self.util.buildResponse(\
self.globals.UnSuccess,
'Missing requested page in metadata >>> {page}'.format(page=argPageId))
return myResponse
# we found one page, get the 1st item from list
self.logger.debug(
'found matching page [{page}] in factory metdata'.format(
page=argPageId))
page = page[0]
pageActions = page['ACTIONS']
if pageActions:
actionIndx = [
indx for indx, val in enumerate(pageActions)
if pageActions[indx]['ACTION_ID'] == argActionId
]
#print("found ??? >>>",actionIndx, pageActions)
if actionIndx:
self.logger.debug(
'found matching action [{action}] on page [{page}] in factory metdata'
.format(action=argActionId, page=argPageId))
if isinstance(actionIndx, list):
actionIndx = actionIndx[0]
#myBPMCallJson = self.infra.factoryMetadata[argPageId][actionIndx][argActionId]
#print("found action >>>",actionIndx, pageActions, pageActions[actionIndx] )
myBPMCallJson = pageActions[actionIndx]['BPM_CALL_JSON']
self.logger.debug('BPM Json call found >>> {bpm}'.format(
bpm=str(myBPMCallJson)))
myResponse = self.util.buildResponse(\
self.globals.Success, self.globals.Success,myBPMCallJson)
return myResponse
#return myBPMCallJson
else:
self.logger.debug(
'action [{action}] not found for page [{page}] in factory metdata'
.format(action=argActionId, page=argPageId))
myResponse = self.util.buildResponse(\
self.globals.UnSuccess,
'Missing requested action [{action}] for page >>> {page}'.format(action = argActionId, page=argPageId))
return myResponse
else:
myResponse = self.util.buildResponse(\
self.globals.UnSuccess,
'Empty actions for page in metadata >>> {page}'.format(page=argPageId))
return myResponse
except Exception as err:
#myRequestStatus = self.util.extractLogError()
raise
def __executeBPSPRocess(self, argLib, argCls, argMethod, arguments):
'''
Description:Private method, internally called in Factory method, execute Factory bpm process
Arguments: lib, class, method, arguments
usage: <__executeBPSPRocess(<lib>,<cls>,<method>,<arguments>) >
Return: Return results in array
'''
try:
self.logger.debug(
"arg received [{lib},{cls},{method},{args}]".format(
lib=argLib, cls=argCls, method=argMethod, args=arguments))
myModule = importlib.import_module(argLib)
myClass = getattr(myModule, argCls)
# if singleton, get an instance else instantiate the class
if hasattr(myModule, 'Singleton') and hasattr(myClass, 'Instance'):
myCallableClass = myClass.Instance()
else:
myCallableClass = myClass()
# get the method from this class
myMethod = getattr(myCallableClass, argMethod)
''' Only MainArg need to be passed '''
#myMainArg = {'MainArg':self.util.extMainArgFromReq(argReqJsonDict)}
''' need to mark that this response is external '''
#myMainArg['MainArg'].update({'ResponseMode':self.globalInstance._Global__ExternalRequest})
# execute the method
if arguments:
self.logger.info(
"executing method with arguments >>>[{lib}.{cls}.{method} {args}]"
.format(lib=argLib,
cls=argCls,
method=argMethod,
args=arguments))
myResults = myMethod(arguments)
else:
self.logger.info(
"executing method w/o arguments >>>[{lib}.{cls}.{method}]".
format(lib=argLib, cls=argCls, method=argMethod))
myResults = myMethod()
self.logger.debug('results after execution >>> {data}'.format(
data=str(myResults)))
return (myResults)
except Exception as err:
#myRequestStatus = self.util.extractLogError()
#myResponse = self.util.buildResponseData(myMainArgData['ResponseMode'], myRequestStatus, 'Error')
raise