Self logging scripts

[Merlin Beedell <MB...@cryoserver.com>]

Hi all,
I am successfully using the following chunk of groovy code at the top of various console scripts in order to preserve the various stdout/strerr output to a log file - as well as on the console.
There are a couple of points.  First it uses SystemOutputInterceptor - but this class appears to be depreciated.  Is there something coming to replace it?
Second, I would like to be able to print the command line as entered by the user who provoked the script. The nearest I could get was to print the args list (as below).  Is there a simple way of obtaining the actual command entered by the user so it can be included with the log?  I was hoping the CliBuilder might have a pretty print feature, but I can't see one.

import groovy.ui.SystemOutputInterceptor

def dateString = new Date().format('yyyyMMMdd-HHmmss')
String getScriptFileName() {
  new File(getClass().protectionDomain.codeSource.location.path).name.toLowerCase().replace(/\.groovy/, '')
}
new File('./logs').mkdir()
def logOutput = new PrintWriter(new File("./logs/${getScriptFileName()}-${dateString}.log"))
def myLoger = new SystemOutputInterceptor( { Object... args -> logOutput << args[-1]; logOutput.flush(); true } )
myLoger.start()
if (args) {
  print "Parameters provided:"
  args.each {print " " + it}
  println ""
}

println  "this is printed to the console window and to the log file - like a 'tee' feature.  Really useful"


Merlin Beedell
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RE: Self logging scripts

[Merlin Beedell <MB...@cryoserver.com>]

This line should have been like this:
  new File(getClass().protectionDomain.codeSource.location.path).name.toLowerCase().replace('.groovy', '')
Merlin Beedell

From: Merlin Beedell <MB...@cryoserver.com>
Sent: 26 January 2021 3:33 PM
To: users@groovy.apache.org
Subject: Self logging scripts

Hi all,
I am successfully using the following chunk of groovy code at the top of various console scripts in order to preserve the various stdout/strerr output to a log file - as well as on the console.
There are a couple of points.  First it uses SystemOutputInterceptor - but this class appears to be depreciated.  Is there something coming to replace it?
Second, I would like to be able to print the command line as entered by the user who provoked the script. The nearest I could get was to print the args list (as below).  Is there a simple way of obtaining the actual command entered by the user so it can be included with the log?  I was hoping the CliBuilder might have a pretty print feature, but I can't see one.

import groovy.ui.SystemOutputInterceptor

def dateString = new Date().format('yyyyMMMdd-HHmmss')
String getScriptFileName() {
  new File(getClass().protectionDomain.codeSource.location.path).name.toLowerCase().replace(/\.groovy/, '')
}
new File('./logs').mkdir()
def logOutput = new PrintWriter(new File("./logs/${getScriptFileName()}-${dateString}.log"))
def myLoger = new SystemOutputInterceptor( { Object... args -> logOutput << args[-1]; logOutput.flush(); true } )
myLoger.start()
if (args) {
  print "Parameters provided:"
  args.each {print " " + it}
  println ""
}

println  "this is printed to the console window and to the log file - like a 'tee' feature.  Really useful"


Merlin Beedell