格式記錄器忽略ANSII代碼 - Python日誌記錄

Question

我已經創建了一個python腳本，它使用parallel-ssh模塊（AKA pssh）爲了在遠程節點上運行各種命令。其中一個命令是puppet agent -t，它使用ANSII顏色代碼輸出。 當腳本正在運行並輸出到終端時，着色按預期工作。然而，在腳本日誌我看到它不解析ANSII代碼，而是我得到一個醜陋的包裝的每一行，如下：

2016-01-12 20:23:30,748 INFO: [ubuntu01]  ESC[1;31mWarning: Setting templatedir is deprecated. See http://links.puppetlabs.com/env-settings-deprecations 
2016-01-12 20:23:30,748 INFO: [ubuntu01]  (at /usr/lib/ruby/vendor_ruby/puppet/settings.rb:1139:in `issue_deprecation_warning')ESC[0m 
2016-01-12 20:23:30,749 INFO: [ubuntu01]  ESC[0;32mInfo: Retrieving pluginESC[0m 
2016-01-12 20:23:31,984 INFO: [ubuntu01]  ESC[0;32mInfo: Caching catalog for ubuntu01.puppetlabESC[0m 
2016-01-12 20:23:32,014 INFO: [ubuntu01]  ESC[0;32mInfo: Applying configuration version '1452623010'ESC[0m 
2016-01-12 20:23:32,083 INFO: [ubuntu01]  ESC[mNotice: Finished catalog run in 0.08 secondsESC[0m 
2016-01-12 20:23:32,351 INFO: [ubuntu01]  * agent is running 
2016-01-12 20:23:32,353 INFO: [centos01]  ESC[0;32mInfo: Retrieving pluginfactsESC[0m 
2016-01-12 20:23:32,353 INFO: [centos01]  ESC[0;32mInfo: Retrieving pluginESC[0m 
2016-01-12 20:23:33,712 INFO: [centos01]  ESC[0;32mInfo: Caching catalog for centos01.puppetlabESC[0m 
2016-01-12 20:23:33,838 INFO: [centos01]  ESC[0;32mInfo: Applying configuration version '1452623010'ESC[0m 
2016-01-12 20:23:34,101 INFO: [centos01]  ESC[mNotice: Finished catalog run in 0.27 secondsESC[0m 
2016-01-12 20:23:34,421 INFO: [centos01]  puppet (pid 2069) is running... 

這是非常令人沮喪，因爲它使日誌的可讀性。 我試圖修改與re.compile(r'\x1b[^m]*m')方法記錄器的配置，我在this thread發現，像這樣：

import logging 
import re 

ansi_escape = re.compile(r'\x1b[^m]*m') 
message = ansi_escape.sub('', '%(message)s') 


def set_logger(log_file): 
    """Define the logger..""" 
    try: 
     logging.basicConfig(filename=log_file, level=logging.INFO, 
         format='%(asctime)s %(levelname)s: ' + message) 
     logger = logging.getLogger(__name__) 
     return logger 
    except IOError: 
     print "ERROR: No permissions to access the log file! Please run the script as root user (sudo will also do the trick)..\n" 
     exit(2) 

腳本運行正常，然而，沒有變化和日誌仍然看起來雜亂無章所有這些ANSII碼。 我假設可能有另一個地方可以爲pssh記錄器設置單獨的處理程序，但我無法找到它。

任何幫助將非常感謝！

Answer 1

您是否嘗試禁用傀儡顏色？

puppet agent -t --color=false 

Answer 2

您當前的代碼只能轉義實際的日誌記錄模板。希望有人可以一起告訴你如何正確地做到這一點，但你可以使用一個日誌記錄適配器，它就像一個記錄器，除了它允許你修改記錄的消息。

class myAdapter(logging.LoggerAdapter): 

    def process(self, msg, kwargs): 
     msg = re.sub(r'\x1b[^m]*m', '', msg) 
     return '%s' % (msg), kwargs 

def set_logger(log_file): 
    """Define the logger..""" 
    try: 
     logging.basicConfig(filename=log_file, level=logging.INFO, 
        format='%(asctime)s %(levelname)s: ' + message) 
     logger = logging.getLogger(__name__) 
     return myAdapter(logger, {}) 
    except IOError: 
     print "ERROR: No permissions to access the log file! Please run the script as root user (sudo will also do the trick)..\n" 
     exit(2) 

更多信息可以在記錄食譜中找到：https://docs.python.org/2/howto/logging-cookbook.html

Answer 3

這個版本保持原有產量，並增加了「stdout.noansi」所以你必須對原始輸出，並沒有ANSI格式的一個

import re 

client = pssh.ParallelSSHClient(nodes, pool_size=args.batch, timeout=10, num_retries=1) 

output = client.run_command(command, sudo=True) 

for node in output: 
    # let's remove ansi formatting and put it into 'stdout.noansi'... 
    output[node]['stdout.noansi'] = re.sub(r'\x1b\[[^m]*?m', '', output[node]['stdout'], re.I | re.S | re.M) 
    print '--------------- <<<<< NOANSI OUTPUT >>>>> ---------------' 
    [print '[{0}] {1}'.format(node, line) for line in output[node]['stdout.noansi'] ] 
    print '--------------- <<<<< ORIGINAL OUTPUT >>>>> ---------------' 
    [print '[{0}] {1}'.format(node, line) for line in output[node]['stdout'] ]