def start_fd_client(self, i, o, **opts):
self.server = RepceClient(i, o)
rv = self.server.__version__()
exrv = {'proto': repce.repce_version, 'object': Server.version()}
da0 = (rv, exrv)
da1 = ({}, {})
for i in range(2):
for k, v in da0[i].iteritems():
da1[i][k] = int(v)
if da1[0] != da1[1]:
raise RuntimeError(
"RePCe major version mismatch: local %s, remote %s" %
(exrv, rv))
def start_fd_client(self, i, o, **opts):
"""set up RePCe client, handshake with server
It's cut out as a separate method to let
subclasses hook into client startup
"""
self.server = RepceClient(i, o)
rv = self.server.__version__()
exrv = {'proto': repce.repce_version, 'object': Server.version()}
da0 = (rv, exrv)
da1 = ({}, {})
for i in range(2):
for k, v in da0[i].iteritems():
da1[i][k] = int(v)
if da1[0] != da1[1]:
raise GsyncdError(
"RePCe major version mismatch: local %s, remote %s" %
(exrv, rv))
def service_loop(self, *args):
"""enter service loop
- if slave given, instantiate GMaster and
pass control to that instance, which implements
master behavior
- else do that's what's inherited
"""
if args:
slave = args[0]
if gconf.local_path:
class brickserver(FILE.FILEServer):
local_path = gconf.local_path
aggregated = self.server
@classmethod
def entries(cls, path):
e = super(brickserver, cls).entries(path)
# on the brick don't mess with /.glusterfs
if path == '.':
try:
e.remove('.glusterfs')
except ValueError:
pass
return e
@classmethod
def lstat(cls, e):
""" path based backend stat """
return super(brickserver, cls).lstat(e)
@classmethod
def gfid(cls, e):
""" path based backend gfid fetch """
return super(brickserver, cls).gfid(e)
@classmethod
def linkto_check(cls, e):
return super(brickserver, cls).linkto_check(e)
if gconf.slave_id:
# define {,set_}xtime in slave, thus preempting
# the call to remote, so that it takes data from
# the local brick
slave.server.xtime = types.MethodType(
lambda _self, path, uuid: (
brickserver.xtime(path,
uuid + '.' + gconf.slave_id)
),
slave.server)
slave.server.stime = types.MethodType(
lambda _self, path, uuid: (
brickserver.stime(path,
uuid + '.' + gconf.slave_id)
),
slave.server)
slave.server.set_stime = types.MethodType(
lambda _self, path, uuid, mark: (
brickserver.set_stime(path,
uuid + '.' + gconf.slave_id,
mark)
),
slave.server)
(g1, g2, g3) = self.gmaster_instantiate_tuple(slave)
g1.master.server = brickserver
g2.master.server = brickserver
g3.master.server = brickserver
else:
(g1, g2, g3) = self.gmaster_instantiate_tuple(slave)
g1.master.server.aggregated = gmaster.master.server
g2.master.server.aggregated = gmaster.master.server
g3.master.server.aggregated = gmaster.master.server
# bad bad bad: bad way to do things like this
# need to make this elegant
# register the crawlers and start crawling
# g1 ==> Xsync, g2 ==> config.change_detector(changelog by default)
# g3 ==> changelog History
(inf, ouf, ra, wa) = gconf.rpc_fd.split(',')
os.close(int(ra))
os.close(int(wa))
changelog_agent = RepceClient(int(inf), int(ouf))
rv = changelog_agent.version()
if int(rv) != CHANGELOG_AGENT_CLIENT_VERSION:
raise GsyncdError(
"RePCe major version mismatch(changelog agent): "
"local %s, remote %s" %
(CHANGELOG_AGENT_CLIENT_VERSION, rv))
g1.register()
try:
(workdir, logfile) = g2.setup_working_dir()
# register with the changelog library
# 9 == log level (DEBUG)
# 5 == connection retries
changelog_agent.register(gconf.local_path,
workdir, logfile, 9, 5)
g2.register(changelog_agent)
g3.register(changelog_agent)
except ChangelogException as e:
logging.debug("Changelog register failed: %s - %s" %
(e.errno, e.strerror))
# oneshot: Try to use changelog history api, if not
# available switch to FS crawl
# Note: if config.change_detector is xsync then
# it will not use changelog history api
try:
g3.crawlwrap(oneshot=True)
except (ChangelogException, NoPurgeTimeAvailable,
PartialHistoryAvailable) as e:
if isinstance(e, ChangelogException):
logging.debug('Changelog history crawl failed, failback '
'to xsync: %s - %s' % (e.errno, e.strerror))
elif isinstance(e, NoPurgeTimeAvailable):
logging.debug('Using xsync crawl since no purge time '
'available')
elif isinstance(e, PartialHistoryAvailable):
logging.debug('Using xsync crawl after consuming history '
'till %s' % str(e))
g1.crawlwrap(oneshot=True)
# crawl loop: Try changelog crawl, if failed
# switch to FS crawl
try:
g2.crawlwrap()
except ChangelogException as e:
logging.debug('Changelog crawl failed, failback to xsync: '
'%s - %s' % (e.errno, e.strerror))
g1.crawlwrap()
else:
sup(self, *args)
