我的python脚本检查mysqldump以及是否有任何问题脚本打印：
脚本逐行将这些记录记录到文件中。
我的问题是有一种方法可以在文件中格式化输出，如：
Dump is old for db;
Dump is old for db;
Dump is old for db;
Dump is not complete for db;
Dump is not complete for db;
Dump is not complete for db;
Dump is empty for db;
Dump is empty for db;
Dump is empty for db;
因为现在我的文件看起来像：
Dump is old for db;
Dump is empty for db;
Dump is old for db;
MySQL dump does not exist for db;
...
etc
这是我的小脚本：）
#!/bin/env python
import psycopg2
import sys,os
from subprocess import Popen, PIPE
from datetime import datetime
import smtplib
con = None
today = datetime.now().strftime("%Y-%m-%d")
log_dump_fail = '/tmp/mysqldump_FAIL'
log_fail = open(log_dump_fail,'w').close()
log_fail = open(log_dump_fail, 'a')
sender = 'PUT_SENDER_NAME_HERE'
receiver = ['receiver_name']
smtp_daemon_host = 'localhost'
def db_backup_file_does_not_exist(db_backup_file):
if not os.path.exists(db_backup_file): return True
else: return False
def dump_health(last_dump_row, file_name,db):
last_row = last_dump_row.rsplit(" ")
tms = ''.join(last_row[4:5])
status = last_row[1:3]
if (status) and (tms != today):
log_fail.write("\nDB is old for "+ str(db) + str(file_name) + ", \nDump finished at " + str(''.join(tms)))
log_fail.write("\n-------------------------------------------")
elif not (status) and (tms == None):
log_fail.write("\nDump is not complete for "+str(db) + str(file_name) + " , end of file is not correct")
log_fail.write("\n-------------------------------------------")
suffixes = ['B', 'KB', 'MB', 'GB', 'TB', 'PB']
def humansize(nbytes):
if nbytes == 0: return '0 B'
i = 0
while nbytes >= 1024 and i < len(suffixes)-1:
nbytes /= 1024.
i += 1
f = ('%.2f' % nbytes).rstrip('0').rstrip('.')
return '%s %s' % (f, suffixes[i])
def dump_size(dump_file, file_name,db):
size = os.path.getsize(dump_file)
if (size < 1024):
human_readable = humansize(size)
log_fail.write("\nDump is empty for " +str(db) + "\n" +"\t" + str (file_name)+", file size is " + str(human_readable))
log_fail.write("\n-------------------------------------------")
def report_to_noc(isubject,text):
TEXT = text
SUBJECT = subject
message = 'Subject: %s\n\n%s' % (SUBJECT, TEXT)
server = smtplib.SMTP(smtp_daemon_host)
server.sendmail(sender, receiver, message)
server.quit()
try:
con = psycopg2.connect(database='**', user='***', password='***', host='****')
cur = con.cursor()
cur.execute("""\
select ad.servicename, (select name from servers where id = ps.server_id) as servername
from packages as p, account_data as ad, package_servers as ps
where p.id=ad.package_id and
p.date_deleted IS NULL and
p.id=ps.package_id and
p.aktuel IS NULL and
p.pre_def_package_id = 4 and
p.mother_package_id !=0 and
ps.subservice_id=5 and
p.mother_package_id NOT IN (select id from packages where date_deleted IS NOT NULL)
ORDER BY servername;
""")
while (1):
row = cur.fetchone ()
if row == None:
break
db = row[0]
server_name = str(row[1])
if (''.join(server_name) == 'SKIP_THIS') or (''.join(server_name) == 'SKIP_THIS'):
continue
else:
db_backup_file = '/storage/backup/db/mysql/' + str(db) + '/current/' + str(db) + '.mysql.gz'
db_backup_file2 = '/storage/backup/' + str(''.join(server_name.split("DB"))) + '/mysql/' + str(db) + '/current/'+ str(db) + '.mysql.gz'
db_file_does_not_exist = False
db_file2_does_not_exist = False
if db_backup_file_does_not_exist(db_backup_file):
db_file_does_not_exist = True
if db_backup_file_does_not_exist(db_backup_file2):
db_file2_does_not_exist = True
if db_file_does_not_exist and db_file2_does_not_exist:
log_fail.write("\nMySQL dump does not exist for " + str(db) + "\n" + "\t" + str(db_backup_file2) + "\n" + "\t" + str(db_backup_file))
log_fail.write("\n-------------------------------------------")
continue
elif (db_file_does_not_exist) and not (db_file2_does_not_exist):
p_zcat = Popen(["zcat", db_backup_file2], stdout=PIPE)
p_tail = Popen(["tail", "-2"], stdin=p_zcat.stdout, stdout=PIPE)
dump_status = str(p_tail.communicate()[0])
dump_health(dump_status,db_backup_file2,db)
dump_size(db_backup_file2, db_backup_file2,db)
elif (db_file2_does_not_exist) and not (db_file_does_not_exist):
p_zcat = Popen(["zcat", db_backup_file], stdout=PIPE)
p_tail = Popen(["tail", "-2"], stdin=p_zcat.stdout, stdout=PIPE)
dump_status = str(p_tail.communicate()[0])
dump_health(dump_status,db_backup_file,db)
dump_size(db_backup_file,db_backup_file,db)
con.close()
except psycopg2.DatabaseError, e:
print 'Error %s' % e
sys.exit(1)
log_fail.close()
if os.path.getsize(log_dump_fail) > 0:
subject = "Not all MySQL dumps completed successfully. Log file backup:" + str(log_dump_fail)
fh = open(log_dump_fail, 'r')
text = fh.read()
fh.close()
report_to_noc(subject,text)
else:
subject = "MySQL dump completed successfullyi for all DBs, listed in PC"
text = "Hello! \nI am notifying you that I checked mysqldump files this morning.\nThere are nothing to worry about. :)"
report_to_noc(subject,text)
答案 0 :(得分：0)
您可以在编写日志文件后对其进行处理。
一个选项是读取您的文件并对行进行排序：
lines = open('log.txt').readlines()
lines.sort()
open('log_sorted.txt', 'w').write("\n".join(lines))
这不会在日志类型之间发出空行。
另一种选择是使用Counter：
from collections import Counter
lines = open('log.txt').readlines()
counter = Counter()
for line in lines:
counter[line] += 1
out_file = open('log_sorted.txt', 'w')
for line, num in counter.iteritems():
out_file.write(line * num + "\n")
答案 1 :(得分：0)
看起来您想要对脚本的输出进行分组，而不是在搜索时记录信息。 最简单的方法是维护4个列表，每个列表为空，而不是空，等等。在脚本中将数据库名称添加到适当的列表而不是日志记录，然后将列表逐个转储到具有适当前缀的文件中（“对于”+ dbname不为空）。 例如，从函数中删除所有log_fail.write（）并将其替换为list.append（）并编写一个单独的函数，根据需要写入日志文件：
添加列表：
db_dump_is_old_list = []
db_dump_is_empty_list = []
db_dump_is_not_complete_list = []
db_dump_does_not_exist_list = []
修改功能：
def dump_health(last_dump_row, file_name,db):
last_row = last_dump_row.rsplit(" ")
tms = ''.join(last_row[4:5])
status = last_row[1:3]
if (status) and (tms != today):
db_dump_is_old_list.append(str(db))
#log_fail.write("\nDB is old for "+ str(db) + str(file_name) + ", \nDump finished at " + str(''.join(tms)))
#log_fail.write("\n-------------------------------------------")
elif not (status) and (tms == None):
db_dump_is_not_complete_list.append(str(db)
#log_fail.write("\nDump is not complete for "+str(db) + str(file_name) + " , end of file is not correct")
#log_fail.write("\n-------------------------------------------")
def dump_size(dump_file, file_name,db):
size = os.path.getsize(dump_file)
if (size < 1024):
human_readable = humansize(size)
db_dump_is_empty_list.append(str(db))
#log_fail.write("\nDump is empty for " +str(db) + "\n" +"\t" + str (file_name)+", file size is " + str(human_readable))
#log_fail.write("\n-------------------------------------------")
if db_file_does_not_exist and db_file2_does_not_exist:
db_dump_does_not_exist_list.append(str(db))
#log_fail.write("\nMySQL dump does not exist for " + str(db) + "\n" + "\t" + str(db_backup_file2) + "\n" + "\t" + str(db_backup_file))
#log_fail.write("\n-------------------------------------------")
continue
并添加记录器功能：
def dump_info_to_log_file():
log_dump_fail = '/tmp/mysqldump_FAIL'
log_fail = open(log_dump_fail,'w').close()
log_fail = open(log_dump_fail, 'a')
for dbname in db_dump_is_old_list:
log_fail.write("Dump is Old for" + str(dbname))
log_fail.write("\n\n")
for dbname in db_dump_is_empty_list:
log_fail.write("Dump is Empty for" + str(dbname))
log_fail.write("\n\n")
for dbname in db_dump_is_not_complete_list:
log_fail.write("Dump is Not Complete for" + str(dbname))
log_fail.write("\n\n")
for dbname in db_dump_does_not_exist_list:
log_fail.write("Dump Does Not Exist for" + str(dbname))
log_fail.close()
或者您只需按原样进行记录，然后读入文件，排序并回写文件。
答案 2 :(得分：0)
谢谢所有有趣的想法。 我真的尝试了所有选项:)
在我看来： 使用Counter对象，专业人员只需几行代码。 但缺点是 - 许多读/写操作。日志文件不大，但是，我决定减少read（s）\ write（s）
对于数组，缺点是多行代码:)但优点是 - 只写一次文件。
所以我实现了数组..：）
谢谢大家!!!