def mysql_monitor(on_db_changed):
global cur, conn
global HOST, PORT, USERNAME, PASSWORD, DATABASE, CHARSET, RETRY_TIME
try:
conn = MySQLdb.connect(host=HOST, user=USERNAME, passwd=PASSWORD, db=DATABASE, port=PORT, charset=CHARSET)
RETRY_TIME = 5
cur = conn.cursor()
pre = get_records(cur)
while not STOP:
changed = False
time.sleep(MONITOR_TIME)
conn.commit()
last = get_records(cur)
for i in monitor_charts:
result = get_result(i, last[i]['head'], pre[i]['rs'], last[i]['rs'])
if result['result'] == 2:
print i + ": Length don't same ,please niu check~\n"
if result['result'] == 1:
changed = True
on_db_changed(format_result(i, set(pre[i]['rs']), set(last[i]['rs'])), result)
if not changed:
print get_time() + ' No change'
else:
pre = copy.deepcopy(last)
except MySQLdb.Error, e:
print "Mysql Error %d: %s" % (e.args[0], e.args[1])
def get_result(chart, head, pre, last):
result = {"result": 0, "time": get_time(), "chart": chart, "head": head, "old": [], "new": []}
pset, lset = set(pre), set(last)
if len(pset) != len(pre) or len(lset) != len(last):
result["result"] = 2
result["comment"] = "Length don't same ,please niu check"
return result
old, new = list(pset - lset), list(lset - pset)
if len(old) == 0 and len(new) == 0:
result["comment"] = "No Record Change"
return result
result["result"], result["old"], result["new"] = 1, old, new
if len(old) == 0:
result["comment"] = "Add " + str(len(new)) + " Records"
elif len(new) == 0:
result["comment"] = "Delete " + str(len(old)) + " Records"
else:
result["comment"] = "Old: " + str(len(old)) + " New: " + str(len(new)) + " "
return result
