def readRecord(self, reader, writer, file_type, row_number, job, fields,
error_list):
""" Read and process the next record
Args:
reader: CsvReader object
writer: CsvWriter object
file_type: Type of file for current job
row_number: Next row number to be read
job_id: ID of current job
fields: List of FileColumn objects for this file type
error_list: instance of ErrorInterface to keep track of errors
Returns:
Tuple with six elements:
1. Dict of record after preprocessing
2. Boolean indicating whether to reduce row count
3. Boolean indicating whether to skip row
4. Boolean indicating whether to stop reading
5. Row error has been found
6. Dict of flex columns
"""
reduce_row = False
row_error_found = False
job_id = job.job_id
try:
(next_record, flex_cols) = reader.get_next_record()
record = FieldCleaner.cleanRow(next_record,
self.long_to_short_dict, fields)
record["row_number"] = row_number
if flex_cols:
flex_cols["row_number"] = row_number
if reader.is_finished and len(record) < 2:
# This is the last line and is empty, don't record an error
return {}, True, True, True, False, {} # Don't count this row
except ResponseException:
if reader.is_finished and reader.extra_line:
#Last line may be blank don't record an error, reader.extra_line indicates a case where the last valid line has extra line breaks
# Don't count last row if empty
reduce_row = True
else:
writer.write([
"Formatting Error", ValidationError.readErrorMsg,
str(row_number), ""
])
error_list.recordRowError(
job_id,
job.filename,
"Formatting Error",
ValidationError.readError,
row_number,
severity_id=RULE_SEVERITY_DICT['fatal'])
row_error_found = True
return {}, reduce_row, True, False, row_error_found, {}
return record, reduce_row, False, False, row_error_found, flex_cols
def readRecord(self, reader, writer, fileType, interfaces, rowNumber,
jobId, fields):
""" Read and process the next record
Args:
reader: CsvReader object
writer: CsvWriter object
fileType: Type of file for current job
interfaces: InterfaceHolder object
rowNumber: Next row number to be read
jobId: ID of current job
Returns:
Tuple with four elements:
1. Dict of record after preprocessing
2. Boolean indicating whether to reduce row count
3. Boolean indicating whether to skip row
4. Boolean indicating whether to stop reading
5. Row error has been found
"""
errorInterface = interfaces.errorDb
reduceRow = False
rowErrorFound = False
try:
record = FieldCleaner.cleanRow(reader.getNextRecord(), fileType,
interfaces.validationDb,
self.longToShortDict, fields)
record["row_number"] = rowNumber
if reader.isFinished and len(record) < 2:
# This is the last line and is empty, don't record an error
return {}, True, True, True, False # Don't count this row
except ResponseException as e:
if reader.isFinished and reader.extraLine:
#Last line may be blank don't record an error, reader.extraLine indicates a case where the last valid line has extra line breaks
# Don't count last row if empty
reduceRow = True
else:
writer.write([
"Formatting Error", ValidationError.readErrorMsg,
str(rowNumber), ""
])
errorInterface.recordRowError(
jobId,
self.filename,
"Formatting Error",
ValidationError.readError,
rowNumber,
severity_id=interfaces.validationDb.getRuleSeverityId(
"fatal"))
rowErrorFound = True
return {}, reduceRow, True, False, rowErrorFound
return record, reduceRow, False, False, rowErrorFound
def runValidation(self, jobId, interfaces):
""" Run validations for specified job
Args:
jobId: Job to be validated
jobTracker: Interface for job tracker
Returns:
True if successful
"""
jobTracker = interfaces.jobDb
rowNumber = 1
fileType = jobTracker.getFileType(jobId)
# If local, make the error report directory
if(self.isLocal and not os.path.exists(self.directory)):
os.makedirs(self.directory)
# Get bucket name and file name
fileName = jobTracker.getFileName(jobId)
self.filename = fileName
bucketName = CONFIG_BROKER['aws_bucket']
regionName = CONFIG_BROKER['aws_region']
errorFileName = self.getFileName(jobTracker.getReportPath(jobId))
# Create File Status object
interfaces.errorDb.createFileIfNeeded(jobId,fileName)
validationDB = interfaces.validationDb
fieldList = validationDB.getFieldsByFileList(fileType)
csvSchema = validationDB.getFieldsByFile(fileType)
rules = validationDB.getRulesByFile(fileType)
reader = self.getReader()
# Get file size and write to jobs table
if(CONFIG_BROKER["use_aws"]):
fileSize = s3UrlHandler.getFileSize("errors/"+jobTracker.getReportPath(jobId))
else:
fileSize = os.path.getsize(jobTracker.getFileName(jobId))
jobTracker.setFileSizeById(jobId, fileSize)
try:
# Pull file
reader.openFile(regionName, bucketName, fileName,fieldList,bucketName,errorFileName)
# Create staging table
tableName = interfaces.stagingDb.getTableName(jobId)
# Create staging table
tableObject = StagingTable(interfaces)
tableObject.createTable(fileType,fileName,jobId,tableName)
errorInterface = interfaces.errorDb
# While not done, pull one row and put it into staging if it passes
# the Validator
with self.getWriter(regionName, bucketName, errorFileName, self.reportHeaders) as writer:
while(not reader.isFinished):
rowNumber += 1
#if (rowNumber % 1000) == 0:
# print("Validating row " + str(rowNumber))
try :
record = FieldCleaner.cleanRow(reader.getNextRecord(), fileType, validationDB)
record["row"] = rowNumber
if(reader.isFinished and len(record) < 2):
# This is the last line and is empty, don't record an error
rowNumber -= 1 # Don't count this row
break
except ResponseException as e:
if reader.isFinished and reader.extraLine:
#Last line may be blank don't record an error, reader.extraLine indicates a case where the last valid line has extra line breaks
# Don't count last row if empty
rowNumber -= 1
else:
writer.write(["Formatting Error", ValidationError.readErrorMsg, str(rowNumber), ""])
errorInterface.recordRowError(jobId,self.filename,"Formatting Error",ValidationError.readError,rowNumber)
errorInterface.setRowErrorsPresent(jobId, True)
continue
valid, failures = Validator.validate(record,rules,csvSchema,fileType,interfaces)
if(valid) :
try:
tableObject.insert(record,fileType)
except ResponseException as e:
# Write failed, move to next record
writer.write(["Formatting Error", ValidationError.writeErrorMsg, str(rowNumber),""])
errorInterface.recordRowError(jobId,self.filename,"Formatting Error",ValidationError.writeError,rowNumber)
errorInterface.setRowErrorsPresent(jobId, True)
continue
else:
# For each failure, record it in error report and metadata
if failures:
errorInterface.setRowErrorsPresent(jobId, True)
for failure in failures:
fieldName = failure[0]
error = failure[1]
failedValue = failure[2]
try:
# If error is an int, it's one of our prestored messages
errorType = int(error)
errorMsg = ValidationError.getErrorMessage(errorType)
except ValueError:
# If not, treat it literally
errorMsg = error
writer.write([fieldName,errorMsg,str(rowNumber),failedValue])
errorInterface.recordRowError(jobId,self.filename,fieldName,error,rowNumber)
# Write unfinished batch
writer.finishBatch()
# Write number of rows to job table
jobTracker.setNumberOfRowsById(jobId,rowNumber)
# Write leftover records
tableObject.endBatch()
# Mark validation as finished in job tracker
jobTracker.markJobStatus(jobId,"finished")
errorInterface.writeAllRowErrors(jobId)
finally:
#ensure the file always closes
reader.close()
return True
def runValidation(self, jobId, interfaces):
""" Run validations for specified job
Args:
jobId: Job to be validated
jobTracker: Interface for job tracker
Returns:
True if successful
"""
jobTracker = interfaces.jobDb
rowNumber = 1
fileType = jobTracker.getFileType(jobId)
# If local, make the error report directory
if (self.isLocal and not os.path.exists(self.directory)):
os.makedirs(self.directory)
# Get bucket name and file name
fileName = jobTracker.getFileName(jobId)
self.filename = fileName
bucketName = CONFIG_BROKER['aws_bucket']
regionName = CONFIG_BROKER['aws_region']
errorFileName = self.getFileName(jobTracker.getReportPath(jobId))
# Create File Status object
interfaces.errorDb.createFileIfNeeded(jobId, fileName)
validationDB = interfaces.validationDb
fieldList = validationDB.getFieldsByFileList(fileType)
csvSchema = validationDB.getFieldsByFile(fileType)
rules = validationDB.getRulesByFile(fileType)
reader = self.getReader()
# Get file size and write to jobs table
if (CONFIG_BROKER["use_aws"]):
fileSize = s3UrlHandler.getFileSize(
"errors/" + jobTracker.getReportPath(jobId))
else:
fileSize = os.path.getsize(jobTracker.getFileName(jobId))
jobTracker.setFileSizeById(jobId, fileSize)
try:
# Pull file
reader.openFile(regionName, bucketName, fileName, fieldList,
bucketName, errorFileName)
# Create staging table
tableName = interfaces.stagingDb.getTableName(jobId)
# Create staging table
tableObject = StagingTable(interfaces)
tableObject.createTable(fileType, fileName, jobId, tableName)
errorInterface = interfaces.errorDb
# While not done, pull one row and put it into staging if it passes
# the Validator
with self.getWriter(regionName, bucketName, errorFileName,
self.reportHeaders) as writer:
while (not reader.isFinished):
rowNumber += 1
#if (rowNumber % 1000) == 0:
# print("Validating row " + str(rowNumber))
try:
record = FieldCleaner.cleanRow(reader.getNextRecord(),
fileType, validationDB)
record["row"] = rowNumber
if (reader.isFinished and len(record) < 2):
# This is the last line and is empty, don't record an error
rowNumber -= 1 # Don't count this row
break
except ResponseException as e:
if reader.isFinished and reader.extraLine:
#Last line may be blank don't record an error, reader.extraLine indicates a case where the last valid line has extra line breaks
# Don't count last row if empty
rowNumber -= 1
else:
writer.write([
"Formatting Error",
ValidationError.readErrorMsg,
str(rowNumber), ""
])
errorInterface.recordRowError(
jobId, self.filename, "Formatting Error",
ValidationError.readError, rowNumber)
errorInterface.setRowErrorsPresent(jobId, True)
continue
valid, failures = Validator.validate(
record, rules, csvSchema, fileType, interfaces)
if (valid):
try:
tableObject.insert(record, fileType)
except ResponseException as e:
# Write failed, move to next record
writer.write([
"Formatting Error",
ValidationError.writeErrorMsg,
str(rowNumber), ""
])
errorInterface.recordRowError(
jobId, self.filename, "Formatting Error",
ValidationError.writeError, rowNumber)
errorInterface.setRowErrorsPresent(jobId, True)
continue
else:
# For each failure, record it in error report and metadata
if failures:
errorInterface.setRowErrorsPresent(jobId, True)
for failure in failures:
fieldName = failure[0]
error = failure[1]
failedValue = failure[2]
try:
# If error is an int, it's one of our prestored messages
errorType = int(error)
errorMsg = ValidationError.getErrorMessage(
errorType)
except ValueError:
# If not, treat it literally
errorMsg = error
writer.write([
fieldName, errorMsg,
str(rowNumber), failedValue
])
errorInterface.recordRowError(
jobId, self.filename, fieldName, error,
rowNumber)
# Write unfinished batch
writer.finishBatch()
# Write number of rows to job table
jobTracker.setNumberOfRowsById(jobId, rowNumber)
# Write leftover records
tableObject.endBatch()
# Mark validation as finished in job tracker
jobTracker.markJobStatus(jobId, "finished")
errorInterface.writeAllRowErrors(jobId)
finally:
#ensure the file always closes
reader.close()
return True
