On 04/01/2012 10:16 AM, Raja Nagendra Kumar wrote:
> intent is to automate the viewing of the Server Logs after the server
> is started through ant script..
> I can write a ant task which opens the file and prints to the console...
>
> as suggested by you, usage of exec would any way makes the ant script
> less portable..for one more time.. we want to minimize exec usage as
> far as possible and invent pure java ways..
>

Well, you could write a "follow" Ant task. It wouldn't be hard,
particularly if you used the Apache Commons Tailer class:
http://commons.apache.org/io/api-release/org/apache/commons/io/input/Tailer.html

Or you could use a <script> tag and write something like this with the
appropriate setup of Ant and BSF. Note that this is untested, and it
doesn't deal with log file rollover/truncation the way that the Tailer
class will:

|  <property name="logfilename" value="request.log" />
 <script language="jython">
import time
def follow(logfile):
   logfile.seek(0,2)     # Optional: Seek end of file
  while True:
      line= logfile.readline()
      if line:
||          yield line
||         continue
||       time.sleep(0.5)    # Sleep for a bit
currfile= open(logfilename)
loglines= follow(currfile)
for linein loglines:
   print line
 </script>
|