-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Len,
On 8/14/2009 12:27 PM, Len Popp wrote: > Testing it *properly* would take far longer than asking an expert See my other post: testing is trivial. > if it happens that some expert already knows the answer. Fair enough. I guess my complaint is about the relative ease with which this question can be answered. It's not like "we're getting some weird behavior in our webapp/Tomcat and we've gotten lost reading the source code of Tomcat... can an expect in Tomcat's internals give us some help?". It's more like "I'm holding a pen in my hand. Can anyone explain how to test if there's any ink in the reservoir?". > For example, a simple "try it out" likely won't tell you what happens > if Tomcat writes a log entry at the same moment when you're clearing > the log file. Do you lose a log entry? Does the log file get cleared? It's a race condition, which is why I suggested using logrotate to do copytruncate. IMO Apache httpd does a better job because you can send a signal to get it to re-open its log files. That allows you to do a move-signal-reopen kind of thing, and no logs are lost. Tomcat chose to go with the simplest thing that could possibly work: writing to stdout and allowing the shell to perform redirection. I have some suggestions to those who are concerned about catalina.out: 1. Just don't write to stdout. Tomcat produces very little output to stdout. Your web application can avoid doing it. Finally, Tomcat provides a "swallowOutput" option for webapps so that System.out and System.err end up writing to configurable loggers that can be redirected to other files (potentially rotated by smarter logging mechanisms than shell redirection). 2. Use a named pipe on the filesystem for catalina.out, plus a log watching facility designed to consume log messages in that way. I'm sure there are other options as well. - -chris -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkqFmj4ACgkQ9CaO5/Lv0PCLzgCcCWnbbgs6JAOI2mf9mu3w6/FB VHAAnRUo0eEiCBke/pfJJ8hcXDz5T1nK =kEUo -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
