view hgext/inotify/__init__.py @ 8787:9aca76502280

inotify: server: move split() out of server

split() has nothing to do with the server logic, it does not need to be
in the class. Move it on top, next to join() which does the opposite.

# __init__.py - inotify-based status acceleration for Linux
#
# Copyright 2006, 2007, 2008 Bryan O'Sullivan <[e-mail]>
# Copyright 2007, 2008 Brendan Cully <[e-mail]>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2, incorporated herein by reference.

'''inotify-based status acceleration for Linux systems
'''

# todo: socket permissions

from mercurial.i18n import _
from mercurial import cmdutil, util
import server
from weakref import proxy
from client import client, QueryFailed

def serve(ui, repo, **opts):
    '''start an inotify server for this repository'''
    timeout = opts.get('timeout')
    if timeout:
        timeout = float(timeout) * 1e3

    class service(object):
        def init(self):
            try:
                self.master = server.master(ui, repo, timeout)
            except server.AlreadyStartedException, inst:
                raise util.Abort(str(inst))

        def run(self):
            try:
                self.master.run()
            finally:
                self.master.shutdown()

    service = service()
    cmdutil.service(opts, initfn=service.init, runfn=service.run)

def debuginotify(ui, repo, **opts):
    '''debugging information for inotify extension

    Prints the list of directories being watched by the inotify server.
    '''
    cli = client(ui, repo)
    response = cli.debugquery()

    ui.write(_('directories being watched:\n'))
    for path in response:
        ui.write(('  %s/\n') % path)

def reposetup(ui, repo):
    if not hasattr(repo, 'dirstate'):
        return

    # XXX: weakref until hg stops relying on __del__
    repo = proxy(repo)

    class inotifydirstate(repo.dirstate.__class__):

        # We'll set this to false after an unsuccessful attempt so that
        # next calls of status() within the same instance don't try again
        # to start an inotify server if it won't start.
        _inotifyon = True

        def status(self, match, ignored, clean, unknown=True):
            files = match.files()
            if '.' in files:
                files = []
            if self._inotifyon and not ignored:
                cli = client(ui, repo)
                try:
                    result = cli.statusquery(files, match, False,
                                            clean, unknown)
                except QueryFailed, instr:
                    ui.debug(str(instr))
                    # don't retry within the same hg instance
                    inotifydirstate._inotifyon = False
                    pass
                else:
                    if ui.config('inotify', 'debug'):
                        r2 = super(inotifydirstate, self).status(
                            match, False, clean, unknown)
                        for c,a,b in zip('LMARDUIC', result, r2):
                            for f in a:
                                if f not in b:
                                    ui.warn('*** inotify: %s +%s\n' % (c, f))
                            for f in b:
                                if f not in a:
                                    ui.warn('*** inotify: %s -%s\n' % (c, f))
                        result = r2
                    return result
            return super(inotifydirstate, self).status(
                match, ignored, clean, unknown)

    repo.dirstate.__class__ = inotifydirstate

cmdtable = {
    'debuginotify':
        (debuginotify, [], ('hg debuginotify')),
    '^inserve':
        (serve,
         [('d', 'daemon', None, _('run server in background')),
          ('', 'daemon-pipefds', '', _('used internally by daemon mode')),
          ('t', 'idle-timeout', '', _('minutes to sit idle before exiting')),
          ('', 'pid-file', '', _('name of file to write process ID to'))],
         _('hg inserve [OPT]...')),
    }