def get_total_uploaded(table_name):
'''Given a table_name, get the total number of rows where upload is 1.'''
query = "SELECT COUNT(*) FROM {0} WHERE uploaded=1".format(table_name)
connect = olrcdb.DatabaseConnection()
result = connect.execute_query(query)
result_tuple = result.fetchone()
return result_tuple[0]
def get_min_id(table_name):
'''Return the minimum id from table_name where uploaded=0'''
query = "SELECT MIN(id) FROM {0} WHERE uploaded=0".format(table_name)
connect = olrcdb.DatabaseConnection()
result = connect.execute_query(query)
result_tuple = result.fetchone()
if not result_tuple[0]:
sys.exit("Nothing to upload from table {0}".format(table_name))
return int(result_tuple[0])
def upload_table(lock, range, table_name, counter, speed):
'''
Given a table_name, upload all the paths from the table where upload is 0.
Using the range value, complete a BATCH worth of uploads at a time.
'''
global FAILED_COUNT, BATCH
connect = olrcdb.DatabaseConnection()
# In order for the current process to upload a unique set of files,
# acquire the lock to read from range's value.
lock.acquire()
while range.value <= TOTAL:
# Grab a "BATCH" worth of file paths to upload.
query = ("SELECT * FROM {0} WHERE uploaded=0"
" AND id >= {1} AND id <{2}".format(table_name, range.value,
range.value + BATCH))
# Let other processes know this batch has been accounted for.
range.value += BATCH
lock.release()
# Fetch results.
result = connect.execute_query(query)
path_tuple = result.fetchone()
# Loop until we run out of rows from the batch
while (path_tuple):
# If the upload is successful, update the database
if upload_file(path_tuple[1]):
lock.acquire()
counter.value += 1
lock.release()
set_uploaded(path_tuple[0], table_name)
else:
FAILED_COUNT += 1
error_log = open(table_name + '.upload.error.log', 'a')
error_log.write("\rFailed: {0}\n".format(
path_tuple[1].encode('utf-8')))
error_log.close()
print_status(counter, lock, speed, table_name)
path_tuple = result.fetchone()
lock.acquire()
#Executes on the last range.
lock.release()
def set_uploaded(id, table_name):
'''For the given path, set uploaded to 1 in table_name.'''
query = "UPDATE {0} set uploaded='1' WHERE id='{1}'".format(table_name, id)
connect = olrcdb.DatabaseConnection()
connect.execute_query(query)
# Check required environment variables have been set
if not env_vars_set():
set_env_message = "The following environment variables need to be " \
"set:\n"
set_env_message += " \n".join(REQUIRED_VARIABLES)
set_env_message += "\nPlease set these environment variables to " \
"connect to the OLRC."
print(set_env_message)
exit(0)
#Open error log:
error_log = open(table_name + '.prepare.error.log', 'w+')
error_log.write("From execution {0}:\n".format(str(
datetime.datetime.now())))
error_log.close()
connect = olrcdb.DatabaseConnection()
connect.create_table(table_name)
prepare_upload(connect, directory, table_name)
sys.stdout.flush()
sys.stdout.write("\r{0} parsed. ".format(COUNT))
if FAILED != 0:
sys.stdout.write("\n{0} FAILED. See error.log.".format(FAILED))
#Log the final count
final_count = open(table_name + ".prepare.out", 'w+')
final_count.write("\r{0} parsed. ".format(COUNT))
final_count.close()