Mercurial > hg
view hgext/inotify/common.py @ 8553:e387ecd7a6ed
inotify: change protocol so that different query types can be supported.
author | Nicolas Dumazet <nicdumz.commits@gmail.com> |
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date | Fri, 17 Apr 2009 20:10:47 +0900 |
parents | 4aad982111b6 |
children | 3e09bc5fee12 |
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# server.py - inotify common protocol code # # Copyright 2006, 2007, 2008 Bryan O'Sullivan <bos@serpentine.com> # Copyright 2007, 2008 Brendan Cully <brendan@kublai.com> # # This software may be used and distributed according to the terms of the # GNU General Public License version 2, incorporated herein by reference. import cStringIO, socket, struct """ Protocol between inotify clients and server: Client sending query: 1) send protocol version number 2) send query type (string, 4 letters long) 3) send query parameters: - For STAT, N+1 \0-separated strings: 1) N different names that need checking 2) 1 string containing all the status types to match Server sending query answer: 1) send protocol version number 2) send query type 3) send struct.pack'ed headers describing the length of the content: e.g. for STAT, receive 8 integers describing the length of the 8 \0-separated string lists ( one list for each lmar!?ic status type ) """ version = 2 resphdrfmts = { 'STAT': '>llllllll' # status requests } resphdrsizes = dict((k, struct.calcsize(v)) for k, v in resphdrfmts.iteritems()) def recvcs(sock): cs = cStringIO.StringIO() s = True try: while s: s = sock.recv(65536) cs.write(s) finally: sock.shutdown(socket.SHUT_RD) cs.seek(0) return cs