From: Kevan Date: Mon, 16 Jan 2012 18:38:29 +0000 (-0800) Subject: Yank homeless shares setup into a separate method. X-Git-Url: https://git.rkrishnan.org/%5B/%5D%20/uri/frontends/somewhere?a=commitdiff_plain;h=refs%2Fheads%2Fticket1382;p=tahoe-lafs%2Ftahoe-lafs.git Yank homeless shares setup into a separate method. --- diff --git a/src/allmydata/immutable/upload.py b/src/allmydata/immutable/upload.py index 434aad54..cbb4ff9b 100644 --- a/src/allmydata/immutable/upload.py +++ b/src/allmydata/immutable/upload.py @@ -238,11 +238,6 @@ class Tahoe2ServerSelector(log.PrefixingLogMixin): self.servers_of_happiness = servers_of_happiness self.needed_shares = needed_shares - self.homeless_shares = set(range(total_shares)) - self.use_trackers = set() # ServerTrackers that have shares assigned - # to them - self.preexisting_shares = {} # shareid => set(serverids) holding shareid - # These servers have shares -- any shares -- for our SI. We keep # track of these to write an error message with them later. self.serverids_with_shares = set() @@ -298,21 +293,8 @@ class Tahoe2ServerSelector(log.PrefixingLogMixin): trackers.append(st) return trackers - # We assign each servers/trackers into one three lists. They all - # start in the "first pass" list. During the first pass, as we ask - # each one to hold a share, we move their tracker to the "second - # pass" list, until the first-pass list is empty. Then during the - # second pass, as we ask each to hold more shares, we move their - # tracker to the "next pass" list, until the second-pass list is - # empty. Then we move everybody from the next-pass list back to the - # second-pass list and repeat the "second" pass (really the third, - # fourth, etc pass), until all shares are assigned, or we've run out - # of potential servers. - self.first_pass_trackers = _make_trackers(writeable_servers) - self.second_pass_trackers = [] # servers worth asking again - self.next_pass_trackers = [] # servers that we have asked again - self._started_second_pass = False - + self._setup_server_tracking() + self._record_writeable_servers(_make_trackers(writeable_servers)) # We don't try to allocate shares to these servers, since they've # said that they're incapable of storing shares of the size that we'd # want to store. We ask them about existing shares for this storage @@ -335,6 +317,31 @@ class Tahoe2ServerSelector(log.PrefixingLogMixin): dl.addCallback(lambda ign: self._loop()) return dl + def _setup_server_tracking(self): + self.homeless_shares = set(range(self.total_shares)) + self.use_trackers = set() # ServerTrackers that have shares assigned + # to them + self.preexisting_shares = {} # shareid => set(serverids) holding shareid + + # We assign each servers/trackers into one three lists. They all + # start in the "first pass" list. During the first pass, as we ask + # each one to hold a share, we move their tracker to the "second + # pass" list, until the first-pass list is empty. Then during the + # second pass, as we ask each to hold more shares, we move their + # tracker to the "next pass" list, until the second-pass list is + # empty. Then we move everybody from the next-pass list back to the + # second-pass list and repeat the "second" pass (really the third, + # fourth, etc pass), until all shares are assigned, or we've run out + # of potential servers. + self.first_pass_trackers = [] # servers that we haven't asked yet + self.second_pass_trackers = [] # servers worth asking again + self.next_pass_trackers = [] # servers that we have asked again + self._started_second_pass = False + + + def _record_writeable_servers(self, trackers): + self.first_pass_trackers = trackers + def _do_inquiry(self, tracker): """