client.py
author Andrew Osmond <aosmond@mozilla.com>
Thu, 07 Dec 2017 08:28:28 -0500
changeset 395483 1a1ebee6fb8ca96748db96d5b5651460c20c0f38
parent 381940 76aceb596872aef0261a7771b7a9e07828db55a7
child 492733 67a72efe36b121822dd3abfd437763636cd6ead0
permissions -rwxr-xr-x
Bug 1419889 - Don't force the image cache to validate if it hasn't started yet. r=tnikkel imgLoader::ValidateEntry would aggressively determine an entry has expired, even when the request hasn't yet begun. This is because the expiration time for the entry was not set unless it was for a channel which supports caching. Now we set the expiration time for all channels, and if it doesn't support caching, it just expires at the current time when imgRequest::OnStartRequest is called. Additionally, imgLoader::ValidateEntry will not consider the expiration time in the entry until it is non-zero.

#!/usr/bin/python
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.


LIBFFI_DIRS = (('js/ctypes/libffi', 'libffi'),)
HG_EXCLUSIONS = ['.hg', '.hgignore', '.hgtags']

CVSROOT_LIBFFI = ':pserver:anoncvs@sources.redhat.com:/cvs/libffi'

import os
import sys
import datetime
import shutil
import glob
from optparse import OptionParser
from subprocess import check_call

topsrcdir = os.path.dirname(__file__)
if topsrcdir == '':
    topsrcdir = '.'

def check_call_noisy(cmd, *args, **kwargs):
    print "Executing command:", cmd
    check_call(cmd, *args, **kwargs)

def do_hg_pull(dir, repository, hg):
    fulldir = os.path.join(topsrcdir, dir)
    # clone if the dir doesn't exist, pull if it does
    if not os.path.exists(fulldir):
        check_call_noisy([hg, 'clone', repository, fulldir])
    else:
        cmd = [hg, 'pull', '-u', '-R', fulldir]
        if repository is not None:
            cmd.append(repository)
        check_call_noisy(cmd)
    check_call([hg, 'parent', '-R', fulldir,
                '--template=Updated to revision {node}.\n'])

def do_hg_replace(dir, repository, tag, exclusions, hg):
    """
        Replace the contents of dir with the contents of repository, except for
        files matching exclusions.
    """
    fulldir = os.path.join(topsrcdir, dir)
    if os.path.exists(fulldir):
        shutil.rmtree(fulldir)

    assert not os.path.exists(fulldir)
    check_call_noisy([hg, 'clone', '-u', tag, repository, fulldir])

    for thing in exclusions:
        for excluded in glob.iglob(os.path.join(fulldir, thing)):
            if os.path.isdir(excluded):
                shutil.rmtree(excluded)
            else:
                os.remove(excluded)

def do_cvs_export(modules, tag, cvsroot, cvs):
    """Check out a CVS directory without CVS metadata, using "export"
    modules is a list of directories to check out and the corresponding
    cvs module, e.g. (('js/ctypes/libffi', 'libffi'),)
    """
    for module_tuple in modules:
        module = module_tuple[0]
        cvs_module = module_tuple[1]
        fullpath = os.path.join(topsrcdir, module)
        if os.path.exists(fullpath):
            print "Removing '%s'" % fullpath
            shutil.rmtree(fullpath)

        (parent, leaf) = os.path.split(module)
        print "CVS export begin: " + datetime.datetime.utcnow().strftime("%Y-%m-%d %H:%M:%S UTC")
        check_call_noisy([cvs, '-d', cvsroot,
                          'export', '-r', tag, '-d', leaf, cvs_module],
                         cwd=os.path.join(topsrcdir, parent))
        print "CVS export end: " + datetime.datetime.utcnow().strftime("%Y-%m-%d %H:%M:%S UTC")

def toggle_trailing_blank_line(depname):
  """If the trailing line is empty, then we'll delete it.
  Otherwise we'll add a blank line."""
  lines = open(depname, "r").readlines()
  if not lines:
      print >>sys.stderr, "unexpected short file"
      return

  if not lines[-1].strip():
      # trailing line is blank, removing it
      open(depname, "wb").writelines(lines[:-1])
  else:
      # adding blank line
      open(depname, "ab").write("\n")

def get_trailing_blank_line_state(depname):
  lines = open(depname, "r").readlines()
  if not lines:
      print >>sys.stderr, "unexpected short file"
      return "no blank line"

  if not lines[-1].strip():
      return "has blank line"
  else:
      return "no blank line"

def update_nspr_or_nss(tag, depfile, destination, hgpath):
  destination = destination.rstrip('/')
  permanent_patch_dir = destination + '/patches'
  temporary_patch_dir = destination + '.patches'
  if os.path.exists(temporary_patch_dir):
    print "please clean up leftover directory " + temporary_patch_dir
    sys.exit(2)
  warn_if_patch_exists(permanent_patch_dir)
  # protect patch directory from being removed by do_hg_replace
  if os.path.exists(permanent_patch_dir):
    shutil.move(permanent_patch_dir, temporary_patch_dir)
  # now update the destination
  print "reverting to HG version of %s to get its blank line state" % depfile
  check_call_noisy([options.hg, 'revert', depfile])
  old_state = get_trailing_blank_line_state(depfile)
  print "old state of %s is: %s" % (depfile, old_state)
  do_hg_replace(destination, hgpath, tag, HG_EXCLUSIONS, options.hg)
  new_state = get_trailing_blank_line_state(depfile)
  print "new state of %s is: %s" % (depfile, new_state)
  if old_state == new_state:
    print "toggling blank line in: ", depfile
    toggle_trailing_blank_line(depfile)
  tag_file = destination + "/TAG-INFO"
  print >>file(tag_file, "w"), tag
  # move patch directory back to a subdirectory
  if os.path.exists(temporary_patch_dir):
    shutil.move(temporary_patch_dir, permanent_patch_dir)

def warn_if_patch_exists(path):
  # If the given patch directory exists and contains at least one file,
  # then print warning and wait for the user to acknowledge.
  if os.path.isdir(path) and os.listdir(path):
    print "========================================"
    print "WARNING: At least one patch file exists"
    print "in directory: " + path
    print "You must manually re-apply all patches"
    print "after this script has completed!"
    print "========================================"
    raw_input("Press Enter to continue...")
    return

o = OptionParser(usage="client.py [options] update_nspr tagname | update_nss tagname | update_libffi tagname")
o.add_option("--skip-mozilla", dest="skip_mozilla",
             action="store_true", default=False,
             help="Obsolete")

o.add_option("--cvs", dest="cvs", default=os.environ.get('CVS', 'cvs'),
             help="The location of the cvs binary")
o.add_option("--cvsroot", dest="cvsroot",
             help="The CVSROOT for libffi (default : %s)" % CVSROOT_LIBFFI)
o.add_option("--hg", dest="hg", default=os.environ.get('HG', 'hg'),
             help="The location of the hg binary")
o.add_option("--repo", dest="repo",
             help="the repo to update from (default: upstream repo)")

try:
    options, args = o.parse_args()
    action = args[0]
except IndexError:
    o.print_help()
    sys.exit(2)

if action in ('checkout', 'co'):
    print >>sys.stderr, "Warning: client.py checkout is obsolete."
    pass
elif action in ('update_nspr'):
    tag, = args[1:]
    depfile = "nsprpub/config/prdepend.h"
    if not options.repo:
        options.repo = 'https://hg.mozilla.org/projects/nspr'
    update_nspr_or_nss(tag, depfile, 'nsprpub', options.repo)
elif action in ('update_nss'):
    tag, = args[1:]
    depfile = "security/nss/coreconf/coreconf.dep"
    if not options.repo:
	    options.repo = 'https://hg.mozilla.org/projects/nss'
    update_nspr_or_nss(tag, depfile, 'security/nss', options.repo)
elif action in ('update_libffi'):
    tag, = args[1:]
    if not options.cvsroot:
        options.cvsroot = CVSROOT_LIBFFI
    do_cvs_export(LIBFFI_DIRS, tag, options.cvsroot, options.cvs)
else:
    o.print_help()
    sys.exit(2)