AIL-framework/bin/lib/regex_helper.py

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#!/usr/bin/env python3
# -*-coding:UTF-8 -*
"""
Regex Helper
"""
import os
import re
import sys
import uuid
from multiprocessing import Process as Proc
sys.path.append(os.environ['AIL_BIN'])
from pubsublogger import publisher
sys.path.append(os.environ['AIL_BIN'])
##################################
# Import Project packages
##################################
from lib import ConfigLoader
from lib import Statistics
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## LOAD CONFIG ##
config_loader = ConfigLoader.ConfigLoader()
r_serv_cache = config_loader.get_redis_conn("Redis_Cache")
config_loader = None
## -- ##
publisher.port = 6380
publisher.channel = "Script"
def generate_redis_cache_key(module_name):
new_uuid = str(uuid.uuid4())
return f'{module_name}_extracted:{new_uuid}'
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def _regex_findall(redis_key, regex, item_content, r_set):
all_items = re.findall(regex, item_content)
if r_set:
if len(all_items) > 1:
for item in all_items:
r_serv_cache.sadd(redis_key, str(item))
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r_serv_cache.expire(redis_key, 360)
elif all_items:
r_serv_cache.sadd(redis_key, str(all_items[0]))
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r_serv_cache.expire(redis_key, 360)
else:
if len(all_items) > 1:
for item in all_items:
r_serv_cache.lpush(redis_key, str(item))
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r_serv_cache.expire(redis_key, 360)
elif all_items:
r_serv_cache.lpush(redis_key, str(all_items[0]))
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r_serv_cache.expire(redis_key, 360)
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def regex_findall(module_name, redis_key, regex, item_id, item_content, max_time=30, r_set=True):
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proc = Proc(target=_regex_findall, args=(redis_key, regex, item_content, r_set, ))
try:
proc.start()
proc.join(max_time)
if proc.is_alive():
proc.terminate()
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Statistics.incr_module_timeout_statistic(module_name)
err_mess = f"{module_name}: processing timeout: {item_id}"
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print(err_mess)
publisher.info(err_mess)
return []
else:
if r_set:
all_items = r_serv_cache.smembers(redis_key)
else:
all_items = r_serv_cache.lrange(redis_key, 0, -1)
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r_serv_cache.delete(redis_key)
proc.terminate()
return all_items
except KeyboardInterrupt:
print("Caught KeyboardInterrupt, terminating workers")
proc.terminate()
sys.exit(0)
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def _regex_finditer(r_key, regex, content):
iterator = re.finditer(regex, content)
for match in iterator:
value = match.group()
start = match.start()
end = match.end()
r_serv_cache.rpush(r_key, f'{start}:{end}:{value}')
r_serv_cache.expire(r_key, 360)
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def regex_finditer(r_key, regex, item_id, content, max_time=30):
proc = Proc(target=_regex_finditer, args=(r_key, regex, content))
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try:
proc.start()
proc.join(max_time)
if proc.is_alive():
proc.terminate()
Statistics.incr_module_timeout_statistic(r_key)
err_mess = f"{r_key}: processing timeout: {item_id}"
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print(err_mess)
publisher.info(err_mess)
return []
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else:
res = r_serv_cache.lrange(r_key, 0, -1)
r_serv_cache.delete(r_key)
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proc.terminate()
all_match = []
for match in res:
start, end, value = match.split(':', 2)
all_match.append((int(start), int(end), value))
return all_match
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except KeyboardInterrupt:
print("Caught KeyboardInterrupt, terminating regex worker")
proc.terminate()
sys.exit(0)
def _regex_search(r_key, regex, content):
if re.search(regex, content):
r_serv_cache.set(r_key, 1)
r_serv_cache.expire(r_key, 360)
def regex_search(r_key, regex, item_id, content, max_time=30):
proc = Proc(target=_regex_search, args=(r_key, regex, content))
try:
proc.start()
proc.join(max_time)
if proc.is_alive():
proc.terminate()
Statistics.incr_module_timeout_statistic(r_key)
err_mess = f"{r_key}: processing timeout: {item_id}"
print(err_mess)
publisher.info(err_mess)
return False
else:
if r_serv_cache.exists(r_key):
r_serv_cache.delete(r_key)
return True
else:
r_serv_cache.delete(r_key)
return False
except KeyboardInterrupt:
print("Caught KeyboardInterrupt, terminating regex worker")
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proc.terminate()
sys.exit(0)