从AppEngine下载日志,包括Python日志语句

我知道您可以使用appcfg.py下载原始访问日志,但我真的对围绕特定请求的所有信息感兴趣,例如python日志记录语句,异常和api统计信息(就像在线日志查看器一样).有没有人知道是否有办法以另一种方式获取该信息,然后自己构建它？

如果有人想知道,我们想对问题进行一些连续统计分析,并将它们显示在办公室墙上的大屏幕上.

当然 - 只需将--severity标志传递给appcfg.py:

$ appcfg.py help request_logs
Usage: appcfg.py [options] request_logs  

Write request logs in Apache common log format.

The 'request_logs' command exports the request logs from your application
to a file.  It will write Apache common log format records ordered
chronologically.  If output file is '-' stdout will be written.

Options:
  -h, --help            Show the help message and exit.
  -q, --quiet           Print errors only.
  -v, --verbose         Print info level logs.
  --noisy               Print all logs.
  -s SERVER, --server=SERVER
                        The server to connect to.
  --insecure            Use HTTP when communicating with the server.
  -e EMAIL, --email=EMAIL
                        The username to use. Will prompt if omitted.
  -H HOST, --host=HOST  Overrides the Host header sent with all RPCs.
  --no_cookies          Do not save authentication cookies to local disk.
  --passin              Read the login password from stdin.
  -A APP_ID, --application=APP_ID
                        Override application from app.yaml file.
  -V VERSION, --version=VERSION
                        Override (major) version from app.yaml file.
  -n NUM_DAYS, --num_days=NUM_DAYS
                        Number of days worth of log data to get. The cut-off
                        point is midnight UTC. Use 0 to get all available
                        logs. Default is 1, unless --append is also given;
                        then the default is 0.
  -a, --append          Append to existing file.
  --severity=SEVERITY   Severity of app-level log messages to get. The range
                        is 0 (DEBUG) through 4 (CRITICAL). If omitted, only
                        request logs are returned.
  --vhost=VHOST         The virtual host of log messages to get. If omitted,
                        all log messages are returned.
  --include_vhost       Include virtual host in log messages.
  --end_date=END_DATE   End date (as YYYY-MM-DD) of period for log data.
                        Defaults to today.

这对我们非常有用:

appcfg.py --append --num_days=0 --include_all request_logs /path/to/your/app/ /var/log/gae/yourapp.log

无论如何,上面的行将获取所有日志记录并将它们附加到日志文件中,如果您之前已执行此操作,否则它将创建新的日志文件.它实际上会查看您现有的日志(如果它在那里)并且它不会得到任何重复.--append如果需要,可以不运行此命令,但如果要自动执行日志下载,则可以使用它.

这里的关键是--include_all标志,似乎没有记录.如果您使用GAE的Web日志查看器,此标志将获取您看到的所有数据.因此,您将获得如下字段:ms = 71 cpu_ms = 32 api_cpu_ms = 12 cpm_usd = 0.000921 ...等.

好的,我希望能有所帮助.

顺便说一句,我们写了一篇关于此的博文,请在这里查看.