I'm maintaining an old asp classic application. It uses Response.AppendToLog as its sole debug logging system. I only debug it on my localhost so the logging files are on my harddrive in the %SystemDrive%\inetpub\logs\LogFiles folder.
I'm looking for a tail-like program that shows these debug messages live. Maybe with a possibility to colour the messages based on a filter.
Update: I've started writing my own tail program in python using the info in Recipe 157035 . The logging lags behind by a minute approximately. Any ideas on improving it?
Why reinvent the wheel? You could use Snare for IIS (free) to log the information to Kiwi's Syslog Daemon (not free).
I finished it. Now all I have to do is Response.AppendToLog("#message");
where every space or weird character in message is replaced by an underscore. Too bad it lags behind by a minute or so, but it's better than nothing.
import time, os, re
def tail_f(file):
interval = 1.0
while True:
where = file.tell()
line = file.readline()
if not line:
time.sleep(interval)
file.seek(where)
else:
yield line
def run():
#Set the filename and open the file
filename = r"C:\inetpub\logs\LogFiles\W3SVC1\u_ex{0}.log".format(time.strftime("%y%m%d"))
file = open(filename,'r')
#Find the size of the file and move to the end
st_results = os.stat(filename)
st_size = st_results[6]
file.seek(st_size)
for line in tail_f(file):
#ignore comments
if line[0] != "#":
line = line.strip()
parts = line.split(" ")
status = parts[10]
if status == "304":
continue
when = parts[1]
method = parts[3]
path = parts[4]
query = parts[5].split("|")[0].split("#")[0]
if query == "-":
query = ""
elif query != "":
query = "?"+query
print when, method[0], status, path + query
if status == "500":
if parts[5].find("|") != -1:
errorparts = parts[5].replace("_", " ").split("|")[1:]
linenr = errorparts[0]
errornr = errorparts[1]
errormessage = errorparts[2]
print "Error {0} on line {1}\n{2}".format(errornr, linenr, errormessage)
if parts[5].find("#") != -1:
print "* "+("\n* ".join(parts[5].replace("_", " ").split("#")[1:]))
run()
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