unload_clients_with_delete.py #2

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#!/usr/bin/env python

"""
This script will unload clients that have not been accessed since the number
of weeks specified in the maintenance.cfg file.

This version of unload clients will delete clients with exclusive checkouts
since unload will not unload those clients.

It also deletes shelves from the clients to be deleted since delete will not
delete a client with a shelf.
"""

import os
import re
import sys
import string
import accessdates
import platform
import sdputils

if len(sys.argv) > 1:
  SDP_INSTANCE = str(sys.argv[1])
else:
  SDP_INSTANCE = '1'

utils = sdputils.SDPUtils(SDP_INSTANCE)
p4 = utils.p4
utils.login()
cfgweeks = utils.get('weeks')

###############################################################################
def unload_clients( command, del_command ):
  clients = []
  accessdates.createlist("clients", "client", cfgweeks)

# Generate list of exclusively opened files.
  os.system('%s -ztag opened -a | grep -A 3 "+F*l" > excllist.txt' % (p4))

  if os.path.isfile("excllist.txt"):
    input = open( "excllist.txt", "r" )
    # Create list of clients with exclusively opened files.
    for line in input.readlines():
      line = line.strip()
      if re.search("\.\.\. client ", line):
        client = line[11:]
        client = client.strip()
        clients.append( client )
  
    input.close()
    os.remove( "excllist.txt" )

# Read list of clients to be unloaded.
  if os.path.isfile("clients.txt"):
    clientsfile = open( "clients.txt", "r" )
  
    for client in clientsfile.readlines():
      client = client.strip()
      # Avoid deleting or affecting Swarm clients.
      if (re.match ('^swarm-', client)):
        continue
      # Delete clients with exclusively opened files since unload won't unload them.  
      if client in clients:
        # Delete shelves from client
        client = re.sub("\$", "\\\$", client)
        os.system('%s -Ztag changes -s shelved -c %s > shelved.txt' % (p4, client))
        if os.path.isfile("shelved.txt"):
          shelvedfile = open("shelved.txt", "r")
          for changeline in shelvedfile.readlines():
            if re.search("\.\.\. change ", changeline):
              changenum = changeline[11:]
              changenum = changenum.strip()
              os.system('%s shelve -c %s -df' % (p4, changenum))
          shelvedfile.close()
          os.remove("shelved.txt")
        os.system('%s client -f -d %s' % (p4, client))
      else:
        client = re.sub("\$", "\\\$", client)
        os.system(('%s unload -f -L -z -c %s') % (p4, client))
  
    clientsfile.close()
  os.remove( "clients.txt")

###############################################################################
# main
if __name__ == '__main__':
  # Generate list of clients to be unloaded.
  unload_clients( "clients", "client" )
# Change User Description Committed
#5 30843 Russell C. Jackson (Rusty) Updated to use parameters for the user and client commands.
#4 25066 Russell C. Jackson (Rusty) Added check for swarm clients to skip unloading them.
#3 25025 Russell C. Jackson (Rusty) Fixed typo in sdputils.py and forced cfgweeks to be an int.
#2 24675 Russell C. Jackson (Rusty) Fixed bugs in sdputils.py and scripts using it.
Converted to standard 2 space spacing, removed copyright stuff.
#1 22693 Russell C. Jackson (Rusty) Branched a Unix only version of the SDP.
Removed extra items to create a cleaner tree.
Moved a few items around to make more sense without Windows in the mix.
//guest/perforce_software/sdp/dev/Maintenance/unload_clients_with_delete.py
#5 22006 C. Thomas Tyler Removed hard-coding assumption of an Instance named 1.
 Now, one of
two things must be true: P4BIN must be defined, as it would be if the
SDP envrionment is loaded in the usual way (source p4_vars N), or else
the 'p4' executable must be found in the path.

Avoided removal of Swarm workspaces.
#4 16029 C. Thomas Tyler Routine merge to dev from main using:
p4 merge -b perforce_software-sdp-dev
#3 13906 C. Thomas Tyler Normalized P4INSTANCE to SDP_INSTANCE to get Unix/Windows
implementations in sync.

Reasons:
1. Things that interact with SDP in both Unix and Windows
environments shoudn't have to account for this obscure
SDP difference between Unix and Windows.  (I came across
this doing CBD work).

2. The Windows and Unix scripts have different variable
names for defining the same concept, the SDP instance.
Unix uses P4INSTANCE, while Windows uses SDP_INSTANCE.

3. This instance tag, a data set identifier, is an SDP concept.
I prefer the SDP_INSTANCE name over P4INSTANCE, so I prpose
to normalize to SDP_INSTANCE.

4. The P4INSTANCE name makes it look like a setting that might be
recognized by the p4d itself, which it is not.  (There are other
such things such as P4SERVER that could perhaps be renamed as
a separate task; but I'm not sure we want to totally disallow
the P4 prefix for variable names. It looks too right to be wrong
in same cases, like P4BIN and P4DBIN.  That's a discussion for
another day, outside the scope of this task).

Meanwhile:
* Fixed a bug in the Windows 2013.3 upgrade script that
was referencing undefined P4INSTANCE, as the Windows
environment defined only SDP_INSTANCE.

* Had P4INSTANCE been removed completely, this change would
likely cause trouble for users doing updates for existing
SDP installations.  So, though it involves slight technical debt,
I opted to keep a redundant definition of P4INSTANCE
in p4_vars.template, with comments indicating SDP_INSTANCE should be
used in favor of P4INSTANCE, with a warning that P4INSTANCE
may go away in a future release.  This should avoid unnecessary
upgrade pain.

* In mkdirs.sh, the varialbe name was INSTANCE rather than
SDP_INSTANCE.  I changed that as well.  That required manual
change rather than sub/replace to avoid corrupting other similar
varialbe names (e.g.  MASTERINSTANCE).

This is a trivial change technically (a substitute/replace, plus
tweaks in p4_vars.template), but impacts many files.
#2 11477 Russell C. Jackson (Rusty) Updated to use /usr/bin/env python

Added workshop header.

 Changed cfg to config.
#1 11464 Russell C. Jackson (Rusty) Current maintenance scripts.