Tue Nov 1 04:03:19 GMT 2011 Brian Warner <warner@lothar.com>

author Daira Hopwood <daira@jacaranda.org>

Thu, 5 Sep 2013 16:32:37 +0000 (17:32 +0100)

committer Daira Hopwood <daira@jacaranda.org>

Thu, 5 Sep 2013 16:32:37 +0000 (17:32 +0100)
author Daira Hopwood <daira@jacaranda.org>
Thu, 5 Sep 2013 16:32:37 +0000 (17:32 +0100)
committer Daira Hopwood <daira@jacaranda.org>
Thu, 5 Sep 2013 16:32:37 +0000 (17:32 +0100)
diff --git a/src/allmydata/immutable/downloader/status.py b/src/allmydata/immutable/downloader/status.py

index 8b1b4f1beca100bc007867cae7a0bfb25fff8a18..8c0f7a123946912f897fdabbc49a3b99611cc8dc 100644 (file)
--- a/src/allmydata/immutable/downloader/status.py
+++ b/src/allmydata/immutable/downloader/status.py
@@ -125,7 +125,7 @@ class DownloadStatus:
          #  response_length (None until success)
          self.block_requests = []
  
-        self.known_shares = [] # (serverid, shnum)
+        self.known_shares = [] # (server, shnum)
          self.problems = []
  
  
diff --git a/src/allmydata/mutable/checker.py b/src/allmydata/mutable/checker.py

index 3063b178559f0359fc228dff78817650ada3b38c..62a2df288773b9eb6b5f09bc11f46e438883ec45 100644 (file)
--- a/src/allmydata/mutable/checker.py
+++ b/src/allmydata/mutable/checker.py
@@ -1,6 +1,6 @@
  
  from allmydata.uri import from_string
-from allmydata.util import base32, idlib, log
+from allmydata.util import base32, log
  from allmydata.check_results import CheckAndRepairResults, CheckResults
  
  from allmydata.mutable.common import MODE_CHECK, CorruptShareError
@@ -14,7 +14,7 @@ class MutableChecker:
          self._storage_broker = storage_broker
          self._history = history
          self._monitor = monitor
-        self.bad_shares = [] # list of (nodeid,shnum,failure)
+        self.bad_shares = [] # list of (server,shnum,failure)
          self._storage_index = self._node.get_storage_index()
          self.results = CheckResults(from_string(node.get_uri()), self._storage_index)
          self.need_repair = False
@@ -91,7 +91,8 @@ class MutableChecker:
          if not self.best_version:
              return
  
-        r = Retrieve(self._node, servermap, self.best_version, verify=True)
+        r = Retrieve(self._node, self._storage_broker, servermap,
+                     self.best_version, verify=True)
          d = r.download()
          d.addCallback(self._process_bad_shares)
          return d
@@ -110,7 +111,7 @@ class MutableChecker:
          counters["count-shares-good"] = num_distinct_shares
          counters["count-shares-needed"] = k
          counters["count-shares-expected"] = N
-        good_hosts = smap.all_peers_for_version(version)
+        good_hosts = smap.all_servers_for_version(version)
          counters["count-good-share-hosts"] = len(good_hosts)
          vmap = smap.make_versionmap()
          counters["count-wrong-shares"] = sum([len(shares)
@@ -170,7 +171,7 @@ class MutableChecker:
                  report.append("Unhealthy: best version has only %d shares "
                                "(encoding is %d-of-%d)" % (s, k, N))
                  summary.append("%d shares (enc %d-of-%d)" % (s, k, N))
-            hosts = smap.all_peers_for_version(best_version)
+            hosts = smap.all_servers_for_version(best_version)
              needs_rebalancing = bool( len(hosts) < N )
          elif unrecoverable:
              healthy = False
@@ -193,21 +194,22 @@ class MutableChecker:
              data["list-corrupt-shares"] = locators = []
              report.append("Corrupt Shares:")
              summary.append("Corrupt Shares:")
-            for (peerid, shnum, f) in sorted(self.bad_shares):
-                locators.append( (peerid, self._storage_index, shnum) )
-                s = "%s-sh%d" % (idlib.shortnodeid_b2a(peerid), shnum)
+            for (server, shnum, f) in sorted(self.bad_shares):
+                serverid = server.get_serverid()
+                locators.append( (serverid, self._storage_index, shnum) )
+                s = "%s-sh%d" % (server.get_name(), shnum)
                  if f.check(CorruptShareError):
                      ft = f.value.reason
                  else:
                      ft = str(f)
                  report.append(" %s: %s" % (s, ft))
                  summary.append(s)
-                p = (peerid, self._storage_index, shnum, f)
+                p = (serverid, self._storage_index, shnum, f)
                  r.problems.append(p)
                  msg = ("CorruptShareError during mutable verify, "
-                       "peerid=%(peerid)s, si=%(si)s, shnum=%(shnum)d, "
+                       "serverid=%(serverid)s, si=%(si)s, shnum=%(shnum)d, "
                         "where=%(where)s")
-                log.msg(format=msg, peerid=idlib.nodeid_b2a(peerid),
+                log.msg(format=msg, serverid=server.get_name(),
                          si=base32.b2a(self._storage_index),
                          shnum=shnum,
                          where=ft,
@@ -218,13 +220,14 @@ class MutableChecker:
  
          sharemap = {}
          for verinfo in vmap:
-            for (shnum, peerid, timestamp) in vmap[verinfo]:
+            for (shnum, server, timestamp) in vmap[verinfo]:
                  shareid = "%s-sh%d" % (smap.summarize_version(verinfo), shnum)
                  if shareid not in sharemap:
                      sharemap[shareid] = []
-                sharemap[shareid].append(peerid)
+                sharemap[shareid].append(server.get_serverid())
          data["sharemap"] = sharemap
-        data["servers-responding"] = list(smap.reachable_peers)
+        data["servers-responding"] = [s.get_serverid() for s in
+                                      list(smap.get_reachable_servers())]
  
          r.set_healthy(healthy)
          r.set_recoverable(bool(recoverable))
diff --git a/src/allmydata/mutable/common.py b/src/allmydata/mutable/common.py

index 9d5ab641dff04e298fd796e8e1cdf37d4c45aadf..4a04339f1ae97c28a96ca261f389bfc934b1aadf 100644 (file)
--- a/src/allmydata/mutable/common.py
+++ b/src/allmydata/mutable/common.py
@@ -1,5 +1,4 @@
  
-from allmydata.util import idlib
  from allmydata.util.spans import DataSpans
  
  MODE_CHECK = "MODE_CHECK" # query all peers
@@ -42,16 +41,14 @@ class NotEnoughServersError(Exception):
          self.first_error = first_error
  
  class CorruptShareError(Exception):
-    def __init__(self, peerid, shnum, reason):
-        self.args = (peerid, shnum, reason)
-        self.peerid = peerid
+    def __init__(self, server, shnum, reason):
+        self.args = (server, shnum, reason)
+        self.server = server
          self.shnum = shnum
          self.reason = reason
      def __str__(self):
-        short_peerid = idlib.nodeid_b2a(self.peerid)[:8]
-        return "<CorruptShareError peerid=%s shnum[%d]: %s" % (short_peerid,
-                                                               self.shnum,
-                                                               self.reason)
+        return "<CorruptShareError server=%s shnum[%d]: %s" % \
+               (self.server.get_name(), self.shnum, self.reason)
  
  class UnknownVersionError(Exception):
      """The share we received was of a version we don't recognize."""
diff --git a/src/allmydata/mutable/filenode.py b/src/allmydata/mutable/filenode.py

index 612e7c77603ba98a746255adbc7362a6de2c5406..afb5f1ad5357aa17b674d33a74e9e99fda702f60 100644 (file)
--- a/src/allmydata/mutable/filenode.py
+++ b/src/allmydata/mutable/filenode.py
@@ -185,19 +185,22 @@ class MutableFileNode:
      def _read_from_cache(self, verinfo, shnum, offset, length):
          return self._cache.read(verinfo, shnum, offset, length)
  
-    def get_write_enabler(self, peerid):
-        assert len(peerid) == 20
-        return hashutil.ssk_write_enabler_hash(self._writekey, peerid)
-    def get_renewal_secret(self, peerid):
-        assert len(peerid) == 20
+    def get_write_enabler(self, server):
+        seed = server.get_foolscap_write_enabler_seed()
+        assert len(seed) == 20
+        return hashutil.ssk_write_enabler_hash(self._writekey, seed)
+    def get_renewal_secret(self, server):
          crs = self._secret_holder.get_renewal_secret()
          frs = hashutil.file_renewal_secret_hash(crs, self._storage_index)
-        return hashutil.bucket_renewal_secret_hash(frs, peerid)
-    def get_cancel_secret(self, peerid):
-        assert len(peerid) == 20
+        lease_seed = server.get_lease_seed()
+        assert len(lease_seed) == 20
+        return hashutil.bucket_renewal_secret_hash(frs, lease_seed)
+    def get_cancel_secret(self, server):
          ccs = self._secret_holder.get_cancel_secret()
          fcs = hashutil.file_cancel_secret_hash(ccs, self._storage_index)
-        return hashutil.bucket_cancel_secret_hash(fcs, peerid)
+        lease_seed = server.get_lease_seed()
+        assert len(lease_seed) == 20
+        return hashutil.bucket_cancel_secret_hash(fcs, lease_seed)
  
      def get_writekey(self):
          return self._writekey
@@ -387,7 +390,7 @@ class MutableFileNode:
          recoverable version that I can find in there.
          """
          # XXX: wording ^^^^
-        if servermap and servermap.last_update_mode == mode:
+        if servermap and servermap.get_last_update()[0] == mode:
              d = defer.succeed(servermap)
          else:
              d = self._get_servermap(mode)
@@ -780,7 +783,7 @@ class MutableFileVersion:
  
      def _overwrite(self, new_contents):
          assert IMutableUploadable.providedBy(new_contents)
-        assert self._servermap.last_update_mode == MODE_WRITE
+        assert self._servermap.get_last_update()[0] == MODE_WRITE
  
          return self._upload(new_contents)
  
@@ -874,7 +877,7 @@ class MutableFileVersion:
          I attempt to apply a modifier to the contents of the mutable
          file.
          """
-        assert self._servermap.last_update_mode != MODE_READ
+        assert self._servermap.get_last_update()[0] != MODE_READ
  
          # download_to_data is serialized, so we have to call this to
          # avoid deadlock.
@@ -974,7 +977,8 @@ class MutableFileVersion:
          """
          I am the serialized companion of read.
          """
-        r = Retrieve(self._node, self._servermap, self._version, fetch_privkey)
+        r = Retrieve(self._node, self._storage_broker, self._servermap,
+                     self._version, fetch_privkey)
          if self._history:
              self._history.notify_retrieve(r.get_status())
          d = r.download(consumer, offset, size)
@@ -1122,7 +1126,8 @@ class MutableFileVersion:
          used by the new uploadable. I return a Deferred that fires with
          the segments.
          """
-        r = Retrieve(self._node, self._servermap, self._version)
+        r = Retrieve(self._node, self._storage_broker, self._servermap,
+                     self._version)
          # decode: takes in our blocks and salts from the servermap,
          # returns a Deferred that fires with the corresponding plaintext
          # segments. Does not download -- simply takes advantage of
diff --git a/src/allmydata/mutable/publish.py b/src/allmydata/mutable/publish.py

index 87854cbaa8597186421331a4cfa264bb3d9859c0..b028779b2ca1d07514f84d0df0b87e724ac33e0e 100644 (file)
--- a/src/allmydata/mutable/publish.py
+++ b/src/allmydata/mutable/publish.py
@@ -8,7 +8,7 @@ from twisted.internet import defer
  from twisted.python import failure
  from allmydata.interfaces import IPublishStatus, SDMF_VERSION, MDMF_VERSION, \
                                   IMutableUploadable
-from allmydata.util import base32, hashutil, mathutil, idlib, log
+from allmydata.util import base32, hashutil, mathutil, log
  from allmydata.util.dictutil import DictOfSets
  from allmydata import hashtree, codec
  from allmydata.storage.server import si_b2a
@@ -39,7 +39,7 @@ class PublishStatus:
          self.timings["encrypt"] = 0.0
          self.timings["encode"] = 0.0
          self.servermap = None
-        self.problems = {}
+        self._problems = {}
          self.active = True
          self.storage_index = None
          self.helper = False
@@ -50,10 +50,11 @@ class PublishStatus:
          self.counter = self.statusid_counter.next()
          self.started = time.time()
  
-    def add_per_server_time(self, peerid, elapsed):
-        if peerid not in self.timings["send_per_server"]:
-            self.timings["send_per_server"][peerid] = []
-        self.timings["send_per_server"][peerid].append(elapsed)
+    def add_per_server_time(self, server, elapsed):
+        serverid = server.get_serverid()
+        if serverid not in self.timings["send_per_server"]:
+            self.timings["send_per_server"][serverid] = []
+        self.timings["send_per_server"][serverid].append(elapsed)
      def accumulate_encode_time(self, elapsed):
          self.timings["encode"] += elapsed
      def accumulate_encrypt_time(self, elapsed):
@@ -79,6 +80,8 @@ class PublishStatus:
          return self.active
      def get_counter(self):
          return self.counter
+    def get_problems(self):
+        return self._problems
  
      def set_storage_index(self, si):
          self.storage_index = si
@@ -152,8 +155,8 @@ class Publish:
          it on their own.
          """
          # How this works:
-        # 1: Make peer assignments. We'll assign each share that we know
-        # about on the grid to that peer that currently holds that
+        # 1: Make server assignments. We'll assign each share that we know
+        # about on the grid to that server that currently holds that
          # share, and will not place any new shares.
          # 2: Setup encoding parameters. Most of these will stay the same
          # -- datalength will change, as will some of the offsets.
@@ -183,9 +186,9 @@ class Publish:
  
          # first, which servers will we publish to? We require that the
          # servermap was updated in MODE_WRITE, so we can depend upon the
-        # peerlist computed by that process instead of computing our own.
+        # serverlist computed by that process instead of computing our own.
          assert self._servermap
-        assert self._servermap.last_update_mode in (MODE_WRITE, MODE_CHECK)
+        assert self._servermap.get_last_update()[0] in (MODE_WRITE, MODE_CHECK)
          # we will push a version that is one larger than anything present
          # in the grid, according to the servermap.
          self._new_seqnum = self._servermap.highest_seqnum() + 1
@@ -210,10 +213,9 @@ class Publish:
          self._encprivkey = self._node.get_encprivkey()
  
          sb = self._storage_broker
-        full_peerlist = [(s.get_serverid(), s.get_rref())
-                         for s in sb.get_servers_for_psi(self._storage_index)]
-        self.full_peerlist = full_peerlist # for use later, immutable
-        self.bad_peers = set() # peerids who have errbacked/refused requests
+        full_serverlist = list(sb.get_servers_for_psi(self._storage_index))
+        self.full_serverlist = full_serverlist # for use later, immutable
+        self.bad_servers = set() # servers who have errbacked/refused requests
  
          # This will set self.segment_size, self.num_segments, and
          # self.fec. TODO: Does it know how to do the offset? Probably
@@ -229,7 +231,7 @@ class Publish:
          # we keep track of three tables. The first is our goal: which share
          # we want to see on which servers. This is initially populated by the
          # existing servermap.
-        self.goal = set() # pairs of (peerid, shnum) tuples
+        self.goal = set() # pairs of (server, shnum) tuples
  
          # the number of outstanding queries: those that are in flight and
          # may or may not be delivered, accepted, or acknowledged. This is
@@ -240,12 +242,7 @@ class Publish:
          # the third is a table of successes: share which have actually been
          # placed. These are populated when responses come back with success.
          # When self.placed == self.goal, we're done.
-        self.placed = set() # (peerid, shnum) tuples
-
-        # we also keep a mapping from peerid to RemoteReference. Each time we
-        # pull a connection out of the full peerlist, we add it to this for
-        # use later.
-        self.connections = {}
+        self.placed = set() # (server, shnum) tuples
  
          self.bad_share_checkstrings = {}
  
@@ -256,27 +253,24 @@ class Publish:
          # try to update each existing share in place. Since we're
          # updating, we ignore damaged and missing shares -- callers must
          # do a repair to repair and recreate these.
-        for (peerid, shnum) in self._servermap.servermap:
-            self.goal.add( (peerid, shnum) )
-            self.connections[peerid] = self._servermap.connections[peerid]
+        self.goal = set(self._servermap.get_known_shares())
          self.writers = {}
  
          # SDMF files are updated differently.
          self._version = MDMF_VERSION
          writer_class = MDMFSlotWriteProxy
  
-        # For each (peerid, shnum) in self.goal, we make a
-        # write proxy for that peer. We'll use this to write
-        # shares to the peer.
-        for key in self.goal:
-            peerid, shnum = key
-            write_enabler = self._node.get_write_enabler(peerid)
-            renew_secret = self._node.get_renewal_secret(peerid)
-            cancel_secret = self._node.get_cancel_secret(peerid)
+        # For each (server, shnum) in self.goal, we make a
+        # write proxy for that server. We'll use this to write
+        # shares to the server.
+        for (server,shnum) in self.goal:
+            write_enabler = self._node.get_write_enabler(server)
+            renew_secret = self._node.get_renewal_secret(server)
+            cancel_secret = self._node.get_cancel_secret(server)
              secrets = (write_enabler, renew_secret, cancel_secret)
  
              self.writers[shnum] =  writer_class(shnum,
-                                                self.connections[peerid],
+                                                server.get_rref(),
                                                  self._storage_index,
                                                  secrets,
                                                  self._new_seqnum,
@@ -284,9 +278,10 @@ class Publish:
                                                  self.total_shares,
                                                  self.segment_size,
                                                  self.datalength)
-            self.writers[shnum].peerid = peerid
-            assert (peerid, shnum) in self._servermap.servermap
-            old_versionid, old_timestamp = self._servermap.servermap[key]
+            self.writers[shnum].server = server
+            known_shares = self._servermap.get_known_shares()
+            assert (server, shnum) in known_shares
+            old_versionid, old_timestamp = known_shares[(server,shnum)]
              (old_seqnum, old_root_hash, old_salt, old_segsize,
               old_datalength, old_k, old_N, old_prefix,
               old_offsets_tuple) = old_versionid
@@ -375,9 +370,9 @@ class Publish:
  
          # first, which servers will we publish to? We require that the
          # servermap was updated in MODE_WRITE, so we can depend upon the
-        # peerlist computed by that process instead of computing our own.
+        # serverlist computed by that process instead of computing our own.
          if self._servermap:
-            assert self._servermap.last_update_mode in (MODE_WRITE, MODE_CHECK)
+            assert self._servermap.get_last_update()[0] in (MODE_WRITE, MODE_CHECK)
              # we will push a version that is one larger than anything present
              # in the grid, according to the servermap.
              self._new_seqnum = self._servermap.highest_seqnum() + 1
@@ -408,10 +403,9 @@ class Publish:
          self._encprivkey = self._node.get_encprivkey()
  
          sb = self._storage_broker
-        full_peerlist = [(s.get_serverid(), s.get_rref())
-                         for s in sb.get_servers_for_psi(self._storage_index)]
-        self.full_peerlist = full_peerlist # for use later, immutable
-        self.bad_peers = set() # peerids who have errbacked/refused requests
+        full_serverlist = list(sb.get_servers_for_psi(self._storage_index))
+        self.full_serverlist = full_serverlist # for use later, immutable
+        self.bad_servers = set() # servers who have errbacked/refused requests
  
          # This will set self.segment_size, self.num_segments, and
          # self.fec.
@@ -426,7 +420,7 @@ class Publish:
          # we keep track of three tables. The first is our goal: which share
          # we want to see on which servers. This is initially populated by the
          # existing servermap.
-        self.goal = set() # pairs of (peerid, shnum) tuples
+        self.goal = set() # pairs of (server, shnum) tuples
  
          # the number of outstanding queries: those that are in flight and
          # may or may not be delivered, accepted, or acknowledged. This is
@@ -437,12 +431,7 @@ class Publish:
          # the third is a table of successes: share which have actually been
          # placed. These are populated when responses come back with success.
          # When self.placed == self.goal, we're done.
-        self.placed = set() # (peerid, shnum) tuples
-
-        # we also keep a mapping from peerid to RemoteReference. Each time we
-        # pull a connection out of the full peerlist, we add it to this for
-        # use later.
-        self.connections = {}
+        self.placed = set() # (server, shnum) tuples
  
          self.bad_share_checkstrings = {}
  
@@ -451,18 +440,16 @@ class Publish:
  
          # we use the servermap to populate the initial goal: this way we will
          # try to update each existing share in place.
-        for (peerid, shnum) in self._servermap.servermap:
-            self.goal.add( (peerid, shnum) )
-            self.connections[peerid] = self._servermap.connections[peerid]
+        self.goal = set(self._servermap.get_known_shares())
+
          # then we add in all the shares that were bad (corrupted, bad
          # signatures, etc). We want to replace these.
-        for key, old_checkstring in self._servermap.bad_shares.items():
-            (peerid, shnum) = key
-            self.goal.add(key)
-            self.bad_share_checkstrings[key] = old_checkstring
-            self.connections[peerid] = self._servermap.connections[peerid]
+        for key, old_checkstring in self._servermap.get_bad_shares().items():
+            (server, shnum) = key
+            self.goal.add( (server,shnum) )
+            self.bad_share_checkstrings[(server,shnum)] = old_checkstring
  
-        # TODO: Make this part do peer selection.
+        # TODO: Make this part do server selection.
          self.update_goal()
          self.writers = {}
          if self._version == MDMF_VERSION:
@@ -470,18 +457,17 @@ class Publish:
          else:
              writer_class = SDMFSlotWriteProxy
  
-        # For each (peerid, shnum) in self.goal, we make a
-        # write proxy for that peer. We'll use this to write
-        # shares to the peer.
-        for key in self.goal:
-            peerid, shnum = key
-            write_enabler = self._node.get_write_enabler(peerid)
-            renew_secret = self._node.get_renewal_secret(peerid)
-            cancel_secret = self._node.get_cancel_secret(peerid)
+        # For each (server, shnum) in self.goal, we make a
+        # write proxy for that server. We'll use this to write
+        # shares to the server.
+        for (server,shnum) in self.goal:
+            write_enabler = self._node.get_write_enabler(server)
+            renew_secret = self._node.get_renewal_secret(server)
+            cancel_secret = self._node.get_cancel_secret(server)
              secrets = (write_enabler, renew_secret, cancel_secret)
  
              self.writers[shnum] =  writer_class(shnum,
-                                                self.connections[peerid],
+                                                server.get_rref(),
                                                  self._storage_index,
                                                  secrets,
                                                  self._new_seqnum,
@@ -489,17 +475,18 @@ class Publish:
                                                  self.total_shares,
                                                  self.segment_size,
                                                  self.datalength)
-            self.writers[shnum].peerid = peerid
-            if (peerid, shnum) in self._servermap.servermap:
-                old_versionid, old_timestamp = self._servermap.servermap[key]
+            self.writers[shnum].server = server
+            known_shares = self._servermap.get_known_shares()
+            if (server, shnum) in known_shares:
+                old_versionid, old_timestamp = known_shares[(server,shnum)]
                  (old_seqnum, old_root_hash, old_salt, old_segsize,
                   old_datalength, old_k, old_N, old_prefix,
                   old_offsets_tuple) = old_versionid
                  self.writers[shnum].set_checkstring(old_seqnum,
                                                      old_root_hash,
                                                      old_salt)
-            elif (peerid, shnum) in self.bad_share_checkstrings:
-                old_checkstring = self.bad_share_checkstrings[(peerid, shnum)]
+            elif (server, shnum) in self.bad_share_checkstrings:
+                old_checkstring = self.bad_share_checkstrings[(server, shnum)]
                  self.writers[shnum].set_checkstring(old_checkstring)
  
          # Our remote shares will not have a complete checkstring until
@@ -897,9 +884,8 @@ class Publish:
  
      def log_goal(self, goal, message=""):
          logmsg = [message]
-        for (shnum, peerid) in sorted([(s,p) for (p,s) in goal]):
-            logmsg.append("sh%d to [%s]" % (shnum,
-                                            idlib.shortnodeid_b2a(peerid)))
+        for (shnum, server) in sorted([(s,p) for (p,s) in goal]):
+            logmsg.append("sh%d to [%s]" % (shnum, server.get_name()))
          self.log("current goal: %s" % (", ".join(logmsg)), level=log.NOISY)
          self.log("we are planning to push new seqnum=#%d" % self._new_seqnum,
                   level=log.NOISY)
@@ -909,56 +895,57 @@ class Publish:
          if True:
              self.log_goal(self.goal, "before update: ")
  
-        # first, remove any bad peers from our goal
-        self.goal = set([ (peerid, shnum)
-                          for (peerid, shnum) in self.goal
-                          if peerid not in self.bad_peers ])
+        # first, remove any bad servers from our goal
+        self.goal = set([ (server, shnum)
+                          for (server, shnum) in self.goal
+                          if server not in self.bad_servers ])
  
          # find the homeless shares:
-        homefull_shares = set([shnum for (peerid, shnum) in self.goal])
+        homefull_shares = set([shnum for (server, shnum) in self.goal])
          homeless_shares = set(range(self.total_shares)) - homefull_shares
          homeless_shares = sorted(list(homeless_shares))
          # place them somewhere. We prefer unused servers at the beginning of
-        # the available peer list.
+        # the available server list.
  
          if not homeless_shares:
              return
  
          # if an old share X is on a node, put the new share X there too.
-        # TODO: 1: redistribute shares to achieve one-per-peer, by copying
-        #       shares from existing peers to new (less-crowded) ones. The
+        # TODO: 1: redistribute shares to achieve one-per-server, by copying
+        #       shares from existing servers to new (less-crowded) ones. The
          #       old shares must still be updated.
          # TODO: 2: move those shares instead of copying them, to reduce future
          #       update work
  
          # this is a bit CPU intensive but easy to analyze. We create a sort
-        # order for each peerid. If the peerid is marked as bad, we don't
+        # order for each server. If the server is marked as bad, we don't
          # even put them in the list. Then we care about the number of shares
          # which have already been assigned to them. After that we care about
          # their permutation order.
          old_assignments = DictOfSets()
-        for (peerid, shnum) in self.goal:
-            old_assignments.add(peerid, shnum)
+        for (server, shnum) in self.goal:
+            old_assignments.add(server, shnum)
  
-        peerlist = []
-        for i, (peerid, ss) in enumerate(self.full_peerlist):
-            if peerid in self.bad_peers:
+        serverlist = []
+        for i, server in enumerate(self.full_serverlist):
+            serverid = server.get_serverid()
+            if server in self.bad_servers:
                  continue
-            entry = (len(old_assignments.get(peerid, [])), i, peerid, ss)
-            peerlist.append(entry)
-        peerlist.sort()
+            entry = (len(old_assignments.get(server, [])), i, serverid, server)
+            serverlist.append(entry)
+        serverlist.sort()
  
-        if not peerlist:
+        if not serverlist:
              raise NotEnoughServersError("Ran out of non-bad servers, "
                                          "first_error=%s" %
                                          str(self._first_write_error),
                                          self._first_write_error)
  
-        # we then index this peerlist with an integer, because we may have to
-        # wrap. We update the goal as we go.
+        # we then index this serverlist with an integer, because we may have
+        # to wrap. We update the goal as we go.
          i = 0
          for shnum in homeless_shares:
-            (ignored1, ignored2, peerid, ss) = peerlist[i]
+            (ignored1, ignored2, ignored3, server) = serverlist[i]
              # if we are forced to send a share to a server that already has
              # one, we may have two write requests in flight, and the
              # servermap (which was computed before either request was sent)
@@ -967,10 +954,9 @@ class Publish:
              # this, otherwise it would cause the publish to fail with an
              # UncoordinatedWriteError. See #546 for details of the trouble
              # this used to cause.
-            self.goal.add( (peerid, shnum) )
-            self.connections[peerid] = ss
+            self.goal.add( (server, shnum) )
              i += 1
-            if i >= len(peerlist):
+            if i >= len(serverlist):
                  i = 0
          if True:
              self.log_goal(self.goal, "after update: ")
@@ -985,25 +971,25 @@ class Publish:
              # bother checking it.
              return
  
-        peerid = writer.peerid
+        server = writer.server
          lp = self.log("_got_write_answer from %s, share %d" %
-                      (idlib.shortnodeid_b2a(peerid), writer.shnum))
+                      (server.get_name(), writer.shnum))
  
          now = time.time()
          elapsed = now - started
  
-        self._status.add_per_server_time(peerid, elapsed)
+        self._status.add_per_server_time(server, elapsed)
  
          wrote, read_data = answer
  
          surprise_shares = set(read_data.keys()) - set([writer.shnum])
  
          # We need to remove from surprise_shares any shares that we are
-        # knowingly also writing to that peer from other writers.
+        # knowingly also writing to that server from other writers.
  
          # TODO: Precompute this.
          known_shnums = [x.shnum for x in self.writers.values()
-                        if x.peerid == peerid]
+                        if x.server == server]
          surprise_shares -= set(known_shnums)
          self.log("found the following surprise shares: %s" %
                   str(surprise_shares))
@@ -1024,7 +1010,7 @@ class Publish:
              if checkstring == self._checkstring:
                  # they have the right share, somehow
  
-                if (peerid,shnum) in self.goal:
+                if (server,shnum) in self.goal:
                      # and we want them to have it, so we probably sent them a
                      # copy in an earlier write. This is ok, and avoids the
                      # #546 problem.
@@ -1039,7 +1025,7 @@ class Publish:
  
              else:
                  # the new shares are of a different version
-                if peerid in self._servermap.reachable_peers:
+                if server in self._servermap.get_reachable_servers():
                      # we asked them about their shares, so we had knowledge
                      # of what they used to have. Any surprising shares must
                      # have come from someone else, so UCW.
@@ -1050,16 +1036,16 @@ class Publish:
                      # mapupdate should have wokred harder and asked more
                      # servers before concluding that it knew about them all.
  
-                    # signal UCW, but make sure to ask this peer next time,
+                    # signal UCW, but make sure to ask this server next time,
                      # so we'll remember to update it if/when we retry.
                      surprised = True
-                    # TODO: ask this peer next time. I don't yet have a good
+                    # TODO: ask this server next time. I don't yet have a good
                      # way to do this. Two insufficient possibilities are:
                      #
-                    # self._servermap.add_new_share(peerid, shnum, verinfo, now)
+                    # self._servermap.add_new_share(server, shnum, verinfo, now)
                      #  but that requires fetching/validating/parsing the whole
                      #  version string, and all we have is the checkstring
-                    # self._servermap.mark_bad_share(peerid, shnum, checkstring)
+                    # self._servermap.mark_bad_share(server, shnum, checkstring)
                      #  that will make publish overwrite the share next time,
                      #  but it won't re-query the server, and it won't make
                      #  mapupdate search further
@@ -1090,17 +1076,17 @@ class Publish:
              # a way to tell these two apart (in fact, the storage server code
              # doesn't have the option of refusing our share).
              #
-            # If the server is full, mark the peer as bad (so we don't ask
+            # If the server is full, mark the server as bad (so we don't ask
              # them again), but don't set self.surprised. The loop() will find
              # a new server.
              #
              # If the testv failed, log it, set self.surprised, but don't
-            # bother adding to self.bad_peers .
+            # bother adding to self.bad_servers .
  
              self.log("our testv failed, so the write did not happen",
                       parent=lp, level=log.WEIRD, umid="8sc26g")
              self.surprised = True
-            self.bad_peers.add(writer) # don't ask them again
+            self.bad_servers.add(server) # don't ask them again
              # use the checkstring to add information to the log message
              unknown_format = False
              for (shnum,readv) in read_data.items():
@@ -1115,8 +1101,8 @@ class Publish:
                       other_IV) = unpack_sdmf_checkstring(checkstring)
                  else:
                      unknown_format = True
-                expected_version = self._servermap.version_on_peer(peerid,
-                                                                   shnum)
+                expected_version = self._servermap.version_on_server(server,
+                                                                     shnum)
                  if expected_version:
                      (seqnum, root_hash, IV, segsize, datalength, k, N, prefix,
                       offsets_tuple) = expected_version
@@ -1132,8 +1118,8 @@ class Publish:
                                 (other_seqnum, other_roothash)
                      self.log(msg, parent=lp, level=log.NOISY)
                  # if expected_version==None, then we didn't expect to see a
-                # share on that peer, and the 'surprise_shares' clause above
-                # will have logged it.
+                # share on that server, and the 'surprise_shares' clause
+                # above will have logged it.
              return
  
          # and update the servermap
@@ -1142,9 +1128,9 @@ class Publish:
          # shares, and can safely execute these statements.
          if self.versioninfo:
              self.log("wrote successfully: adding new share to servermap")
-            self._servermap.add_new_share(peerid, writer.shnum,
+            self._servermap.add_new_share(server, writer.shnum,
                                            self.versioninfo, started)
-            self.placed.add( (peerid, writer.shnum) )
+            self.placed.add( (server, writer.shnum) )
          self._update_status()
          # the next method in the deferred chain will check to see if
          # we're done and successful.
diff --git a/src/allmydata/mutable/retrieve.py b/src/allmydata/mutable/retrieve.py

index 0e507704669a3367c9e259754b6249b3e5fedd39..0845d29086912838c66ae1e240b769875e75d849 100644 (file)
--- a/src/allmydata/mutable/retrieve.py
+++ b/src/allmydata/mutable/retrieve.py
@@ -27,7 +27,7 @@ class RetrieveStatus:
          self.timings["decode"] = 0.0
          self.timings["decrypt"] = 0.0
          self.timings["cumulative_verify"] = 0.0
-        self.problems = {}
+        self._problems = {}
          self.active = True
          self.storage_index = None
          self.helper = False
@@ -56,11 +56,14 @@ class RetrieveStatus:
          return self.active
      def get_counter(self):
          return self.counter
-
-    def add_fetch_timing(self, peerid, elapsed):
-        if peerid not in self.timings["fetch_per_server"]:
-            self.timings["fetch_per_server"][peerid] = []
-        self.timings["fetch_per_server"][peerid].append(elapsed)
+    def get_problems(self):
+        return self._problems
+
+    def add_fetch_timing(self, server, elapsed):
+        serverid = server.get_serverid()
+        if serverid not in self.timings["fetch_per_server"]:
+            self.timings["fetch_per_server"][serverid] = []
+        self.timings["fetch_per_server"][serverid].append(elapsed)
      def accumulate_decode_time(self, elapsed):
          self.timings["decode"] += elapsed
      def accumulate_decrypt_time(self, elapsed):
@@ -79,6 +82,9 @@ class RetrieveStatus:
          self.progress = value
      def set_active(self, value):
          self.active = value
+    def add_problem(self, server, f):
+        serverid = server.get_serverid()
+        self._problems[serverid] = f
  
  class Marker:
      pass
@@ -91,16 +97,16 @@ class Retrieve:
      # will use a single ServerMap instance.
      implements(IPushProducer)
  
-    def __init__(self, filenode, servermap, verinfo, fetch_privkey=False,
-                 verify=False):
+    def __init__(self, filenode, storage_broker, servermap, verinfo,
+                 fetch_privkey=False, verify=False):
          self._node = filenode
          assert self._node.get_pubkey()
+        self._storage_broker = storage_broker
          self._storage_index = filenode.get_storage_index()
          assert self._node.get_readkey()
          self._last_failure = None
          prefix = si_b2a(self._storage_index)[:5]
          self._log_number = log.msg("Retrieve(%s): starting" % prefix)
-        self._outstanding_queries = {} # maps (peerid,shnum) to start_time
          self._running = True
          self._decoding = False
          self._bad_shares = set()
@@ -239,11 +245,11 @@ class Retrieve:
          self.log("starting download")
          self._started_fetching = time.time()
          # The download process beyond this is a state machine.
-        # _add_active_peers will select the peers that we want to use
+        # _add_active_servers will select the servers that we want to use
          # for the download, and then attempt to start downloading. After
          # each segment, it will check for doneness, reacting to broken
-        # peers and corrupt shares as necessary. If it runs out of good
-        # peers before downloading all of the segments, _done_deferred
+        # servers and corrupt shares as necessary. If it runs out of good
+        # servers before downloading all of the segments, _done_deferred
          # will errback.  Otherwise, it will eventually callback with the
          # contents of the mutable file.
          self.loop()
@@ -251,7 +257,7 @@ class Retrieve:
  
      def loop(self):
          d = fireEventually(None) # avoid #237 recursion limit problem
-        d.addCallback(lambda ign: self._activate_enough_peers())
+        d.addCallback(lambda ign: self._activate_enough_servers())
          d.addCallback(lambda ign: self._download_current_segment())
          # when we're done, _download_current_segment will call _done. If we
          # aren't, it will call loop() again.
@@ -277,20 +283,19 @@ class Retrieve:
          shares = versionmap[self.verinfo]
          # this sharemap is consumed as we decide to send requests
          self.remaining_sharemap = DictOfSets()
-        for (shnum, peerid, timestamp) in shares:
-            self.remaining_sharemap.add(shnum, peerid)
+        for (shnum, server, timestamp) in shares:
+            self.remaining_sharemap.add(shnum, server)
              # If the servermap update fetched anything, it fetched at least 1
              # KiB, so we ask for that much.
              # TODO: Change the cache methods to allow us to fetch all of the
              # data that they have, then change this method to do that.
              any_cache = self._node._read_from_cache(self.verinfo, shnum,
                                                      0, 1000)
-            ss = self.servermap.connections[peerid]
-            reader = MDMFSlotReadProxy(ss,
+            reader = MDMFSlotReadProxy(server.get_rref(),
                                         self._storage_index,
                                         shnum,
                                         any_cache)
-            reader.peerid = peerid
+            reader.server = server
              self.readers[shnum] = reader
          assert len(self.remaining_sharemap) >= k
  
@@ -436,7 +441,7 @@ class Retrieve:
  
          self._current_segment = self._start_segment
  
-    def _activate_enough_peers(self):
+    def _activate_enough_servers(self):
          """
          I populate self._active_readers with enough active readers to
          retrieve the contents of this mutable file. I am called before
@@ -445,9 +450,9 @@ class Retrieve:
          """
          # TODO: It would be cool to investigate other heuristics for
          # reader selection. For instance, the cost (in time the user
-        # spends waiting for their file) of selecting a really slow peer
+        # spends waiting for their file) of selecting a really slow server
          # that happens to have a primary share is probably more than
-        # selecting a really fast peer that doesn't have a primary
+        # selecting a really fast server that doesn't have a primary
          # share. Maybe the servermap could be extended to provide this
          # information; it could keep track of latency information while
          # it gathers more important data, and then this routine could
@@ -485,7 +490,7 @@ class Retrieve:
          else:
              new_shnums = []
  
-        self.log("adding %d new peers to the active list" % len(new_shnums))
+        self.log("adding %d new servers to the active list" % len(new_shnums))
          for shnum in new_shnums:
              reader = self.readers[shnum]
              self._active_readers.append(reader)
@@ -496,7 +501,7 @@ class Retrieve:
              # segment decoding, then we'll take more drastic measures.
              if self._need_privkey and not self._node.is_readonly():
                  d = reader.get_encprivkey()
-                d.addCallback(self._try_to_validate_privkey, reader)
+                d.addCallback(self._try_to_validate_privkey, reader, reader.server)
                  # XXX: don't just drop the Deferred. We need error-reporting
                  # but not flow-control here.
          assert len(self._active_readers) >= self._required_shares
@@ -528,7 +533,7 @@ class Retrieve:
  
      def _remove_reader(self, reader):
          """
-        At various points, we will wish to remove a peer from
+        At various points, we will wish to remove a server from
          consideration and/or use. These include, but are not necessarily
          limited to:
  
@@ -556,18 +561,18 @@ class Retrieve:
          self._active_readers.remove(reader)
          # TODO: self.readers.remove(reader)?
          for shnum in list(self.remaining_sharemap.keys()):
-            self.remaining_sharemap.discard(shnum, reader.peerid)
+            self.remaining_sharemap.discard(shnum, reader.server)
  
  
-    def _mark_bad_share(self, reader, f):
+    def _mark_bad_share(self, server, shnum, reader, f):
          """
-        I mark the (peerid, shnum) encapsulated by my reader argument as
-        a bad share, which means that it will not be used anywhere else.
+        I mark the given (server, shnum) as a bad share, which means that it
+        will not be used anywhere else.
  
          There are several reasons to want to mark something as a bad
          share. These include:
  
-            - A connection error to the peer.
+            - A connection error to the server.
              - A mismatched prefix (that is, a prefix that does not match
                our local conception of the version information string).
              - A failing block hash, salt hash, share hash, or other
@@ -576,21 +581,18 @@ class Retrieve:
          This method will ensure that readers that we wish to mark bad
          (for these reasons or other reasons) are not used for the rest
          of the download. Additionally, it will attempt to tell the
-        remote peer (with no guarantee of success) that its share is
+        remote server (with no guarantee of success) that its share is
          corrupt.
          """
          self.log("marking share %d on server %s as bad" % \
-                 (reader.shnum, reader))
+                 (shnum, server.get_name()))
          prefix = self.verinfo[-2]
-        self.servermap.mark_bad_share(reader.peerid,
-                                      reader.shnum,
-                                      prefix)
+        self.servermap.mark_bad_share(server, shnum, prefix)
          self._remove_reader(reader)
-        self._bad_shares.add((reader.peerid, reader.shnum, f))
-        self._status.problems[reader.peerid] = f
+        self._bad_shares.add((server, shnum, f))
+        self._status.add_problem(server, f)
          self._last_failure = f
-        self.notify_server_corruption(reader.peerid, reader.shnum,
-                                      str(f.value))
+        self.notify_server_corruption(server, shnum, str(f.value))
  
  
      def _download_current_segment(self):
@@ -632,7 +634,7 @@ class Retrieve:
              d = reader.get_block_and_salt(segnum)
              d2 = self._get_needed_hashes(reader, segnum)
              dl = defer.DeferredList([d, d2], consumeErrors=True)
-            dl.addCallback(self._validate_block, segnum, reader, started)
+            dl.addCallback(self._validate_block, segnum, reader, reader.server, started)
              dl.addErrback(self._validation_or_decoding_failed, [reader])
              ds.append(dl)
          dl = defer.DeferredList(ds)
@@ -722,20 +724,20 @@ class Retrieve:
          I am called when a block or a salt fails to correctly validate, or when
          the decryption or decoding operation fails for some reason.  I react to
          this failure by notifying the remote server of corruption, and then
-        removing the remote peer from further activity.
+        removing the remote server from further activity.
          """
          assert isinstance(readers, list)
          bad_shnums = [reader.shnum for reader in readers]
  
-        self.log("validation or decoding failed on share(s) %s, peer(s) %s "
+        self.log("validation or decoding failed on share(s) %s, server(s) %s "
                   ", segment %d: %s" % \
                   (bad_shnums, readers, self._current_segment, str(f)))
          for reader in readers:
-            self._mark_bad_share(reader, f)
+            self._mark_bad_share(reader.server, reader.shnum, reader, f)
          return
  
  
-    def _validate_block(self, results, segnum, reader, started):
+    def _validate_block(self, results, segnum, reader, server, started):
          """
          I validate a block from one share on a remote server.
          """
@@ -744,7 +746,7 @@ class Retrieve:
          self.log("validating share %d for segment %d" % (reader.shnum,
                                                               segnum))
          elapsed = time.time() - started
-        self._status.add_fetch_timing(reader.peerid, elapsed)
+        self._status.add_fetch_timing(server, elapsed)
          self._set_current_status("validating blocks")
          # Did we fail to fetch either of the things that we were
          # supposed to? Fail if so.
@@ -757,7 +759,7 @@ class Retrieve:
              assert isinstance(results[0][1], failure.Failure)
  
              f = results[0][1]
-            raise CorruptShareError(reader.peerid,
+            raise CorruptShareError(server,
                                      reader.shnum,
                                      "Connection error: %s" % str(f))
  
@@ -777,7 +779,7 @@ class Retrieve:
                  bht.set_hashes(blockhashes)
              except (hashtree.BadHashError, hashtree.NotEnoughHashesError, \
                      IndexError), e:
-                raise CorruptShareError(reader.peerid,
+                raise CorruptShareError(server,
                                          reader.shnum,
                                          "block hash tree failure: %s" % e)
  
@@ -791,7 +793,7 @@ class Retrieve:
             bht.set_hashes(leaves={segnum: blockhash})
          except (hashtree.BadHashError, hashtree.NotEnoughHashesError, \
                  IndexError), e:
-            raise CorruptShareError(reader.peerid,
+            raise CorruptShareError(server,
                                      reader.shnum,
                                      "block hash tree failure: %s" % e)
  
@@ -812,7 +814,7 @@ class Retrieve:
                                              leaves={reader.shnum: bht[0]})
              except (hashtree.BadHashError, hashtree.NotEnoughHashesError, \
                      IndexError), e:
-                raise CorruptShareError(reader.peerid,
+                raise CorruptShareError(server,
                                          reader.shnum,
                                          "corrupt hashes: %s" % e)
  
@@ -931,13 +933,13 @@ class Retrieve:
          return plaintext
  
  
-    def notify_server_corruption(self, peerid, shnum, reason):
-        ss = self.servermap.connections[peerid]
-        ss.callRemoteOnly("advise_corrupt_share",
-                          "mutable", self._storage_index, shnum, reason)
+    def notify_server_corruption(self, server, shnum, reason):
+        rref = server.get_rref()
+        rref.callRemoteOnly("advise_corrupt_share",
+                            "mutable", self._storage_index, shnum, reason)
  
  
-    def _try_to_validate_privkey(self, enc_privkey, reader):
+    def _try_to_validate_privkey(self, enc_privkey, reader, server):
          alleged_privkey_s = self._node._decrypt_privkey(enc_privkey)
          alleged_writekey = hashutil.ssk_writekey_hash(alleged_privkey_s)
          if alleged_writekey != self._node.get_writekey():
@@ -945,13 +947,13 @@ class Retrieve:
                       (reader, reader.shnum),
                       level=log.WEIRD, umid="YIw4tA")
              if self._verify:
-                self.servermap.mark_bad_share(reader.peerid, reader.shnum,
+                self.servermap.mark_bad_share(server, reader.shnum,
                                                self.verinfo[-2])
-                e = CorruptShareError(reader.peerid,
+                e = CorruptShareError(server,
                                        reader.shnum,
                                        "invalid privkey")
                  f = failure.Failure(e)
-                self._bad_shares.add((reader.peerid, reader.shnum, f))
+                self._bad_shares.add((server, reader.shnum, f))
              return
  
          # it's good
@@ -986,7 +988,7 @@ class Retrieve:
          self._node._populate_total_shares(N)
  
          if self._verify:
-            ret = list(self._bad_shares)
+            ret = self._bad_shares
              self.log("done verifying, found %d bad shares" % len(ret))
          else:
              # TODO: upload status here?
@@ -997,14 +999,14 @@ class Retrieve:
  
      def _raise_notenoughshareserror(self):
          """
-        I am called by _activate_enough_peers when there are not enough
-        active peers left to complete the download. After making some
+        I am called by _activate_enough_servers when there are not enough
+        active servers left to complete the download. After making some
          useful logging statements, I throw an exception to that effect
          to the caller of this Retrieve object through
          self._done_deferred.
          """
  
-        format = ("ran out of peers: "
+        format = ("ran out of servers: "
                    "have %(have)d of %(total)d segments "
                    "found %(bad)d bad shares "
                    "encoding %(k)d-of-%(n)d")
diff --git a/src/allmydata/mutable/servermap.py b/src/allmydata/mutable/servermap.py

index 1f28cdd263a822c2f313bab354d8ddf333a3bf69..4daee5c0ba8dff9ab58aa5a5c3c79345f6b67a37 100644 (file)
--- a/src/allmydata/mutable/servermap.py
+++ b/src/allmydata/mutable/servermap.py
@@ -6,7 +6,7 @@ from twisted.internet import defer
  from twisted.python import failure
  from foolscap.api import DeadReferenceError, RemoteException, eventually, \
                           fireEventually
-from allmydata.util import base32, hashutil, idlib, log, deferredutil
+from allmydata.util import base32, hashutil, log, deferredutil
  from allmydata.util.dictutil import DictOfSets
  from allmydata.storage.server import si_b2a
  from allmydata.interfaces import IServermapUpdaterStatus
@@ -34,11 +34,12 @@ class UpdateStatus:
          self.started = time.time()
          self.finished = None
  
-    def add_per_server_time(self, peerid, op, sent, elapsed):
+    def add_per_server_time(self, server, op, sent, elapsed):
+        serverid = server.get_serverid()
          assert op in ("query", "late", "privkey")
-        if peerid not in self.timings["per_server"]:
-            self.timings["per_server"][peerid] = []
-        self.timings["per_server"][peerid].append((op,sent,elapsed))
+        if serverid not in self.timings["per_server"]:
+            self.timings["per_server"][serverid] = []
+        self.timings["per_server"][serverid].append((op,sent,elapsed))
  
      def get_started(self):
          return self.started
@@ -69,8 +70,8 @@ class UpdateStatus:
          self.storage_index = si
      def set_mode(self, mode):
          self.mode = mode
-    def set_privkey_from(self, peerid):
-        self.privkey_from = peerid
+    def set_privkey_from(self, server):
+        self.privkey_from = server.get_serverid()
      def set_status(self, status):
          self.status = status
      def set_progress(self, value):
@@ -95,47 +96,53 @@ class ServerMap:
      has changed since I last retrieved this data'. This reduces the chances
      of clobbering a simultaneous (uncoordinated) write.
  
-    @ivar servermap: a dictionary, mapping a (peerid, shnum) tuple to a
-                     (versionid, timestamp) tuple. Each 'versionid' is a
-                     tuple of (seqnum, root_hash, IV, segsize, datalength,
-                     k, N, signed_prefix, offsets)
-
-    @ivar connections: maps peerid to a RemoteReference
-
-    @ivar bad_shares: dict with keys of (peerid, shnum) tuples, describing
-                      shares that I should ignore (because a previous user of
-                      the servermap determined that they were invalid). The
-                      updater only locates a certain number of shares: if
-                      some of these turn out to have integrity problems and
-                      are unusable, the caller will need to mark those shares
-                      as bad, then re-update the servermap, then try again.
-                      The dict maps (peerid, shnum) tuple to old checkstring.
+    @var _known_shares: a dictionary, mapping a (server, shnum) tuple to a
+                        (versionid, timestamp) tuple. Each 'versionid' is a
+                        tuple of (seqnum, root_hash, IV, segsize, datalength,
+                        k, N, signed_prefix, offsets)
+
+    @ivar _bad_shares: dict with keys of (server, shnum) tuples, describing
+                       shares that I should ignore (because a previous user
+                       of the servermap determined that they were invalid).
+                       The updater only locates a certain number of shares:
+                       if some of these turn out to have integrity problems
+                       and are unusable, the caller will need to mark those
+                       shares as bad, then re-update the servermap, then try
+                       again. The dict maps (server, shnum) tuple to old
+                       checkstring.
      """
  
      def __init__(self):
-        self.servermap = {}
-        self.connections = {}
-        self.unreachable_peers = set() # peerids that didn't respond to queries
-        self.reachable_peers = set() # peerids that did respond to queries
-        self.problems = [] # mostly for debugging
-        self.bad_shares = {} # maps (peerid,shnum) to old checkstring
-        self.last_update_mode = None
-        self.last_update_time = 0
+        self._known_shares = {}
+        self.unreachable_servers = set() # servers that didn't respond to queries
+        self.reachable_servers = set() # servers that did respond to queries
+        self._problems = [] # mostly for debugging
+        self._bad_shares = {} # maps (server,shnum) to old checkstring
+        self._last_update_mode = None
+        self._last_update_time = 0
          self.update_data = {} # (verinfo,shnum) => data
  
      def copy(self):
          s = ServerMap()
-        s.servermap = self.servermap.copy() # tuple->tuple
-        s.connections = self.connections.copy() # str->RemoteReference
-        s.unreachable_peers = set(self.unreachable_peers)
-        s.reachable_peers = set(self.reachable_peers)
-        s.problems = self.problems[:]
-        s.bad_shares = self.bad_shares.copy() # tuple->str
-        s.last_update_mode = self.last_update_mode
-        s.last_update_time = self.last_update_time
+        s._known_shares = self._known_shares.copy() # tuple->tuple
+        s.unreachable_servers = set(self.unreachable_servers)
+        s.reachable_servers = set(self.reachable_servers)
+        s._problems = self._problems[:]
+        s._bad_shares = self._bad_shares.copy() # tuple->str
+        s._last_update_mode = self._last_update_mode
+        s._last_update_time = self._last_update_time
          return s
  
-    def mark_bad_share(self, peerid, shnum, checkstring):
+    def get_reachable_servers(self):
+        return self.reachable_servers
+
+    def mark_server_reachable(self, server):
+        self.reachable_servers.add(server)
+
+    def mark_server_unreachable(self, server):
+        self.unreachable_servers.add(server)
+
+    def mark_bad_share(self, server, shnum, checkstring):
          """This share was found to be bad, either in the checkstring or
          signature (detected during mapupdate), or deeper in the share
          (detected at retrieve time). Remove it from our list of useful
@@ -144,70 +151,84 @@ class ServerMap:
          corrupted or badly signed) so that a repair operation can do the
          test-and-set using it as a reference.
          """
-        key = (peerid, shnum) # record checkstring
-        self.bad_shares[key] = checkstring
-        self.servermap.pop(key, None)
+        key = (server, shnum) # record checkstring
+        self._bad_shares[key] = checkstring
+        self._known_shares.pop(key, None)
  
-    def add_new_share(self, peerid, shnum, verinfo, timestamp):
+    def get_bad_shares(self):
+        # key=(server,shnum) -> checkstring
+        return self._bad_shares
+
+    def add_new_share(self, server, shnum, verinfo, timestamp):
          """We've written a new share out, replacing any that was there
          before."""
-        key = (peerid, shnum)
-        self.bad_shares.pop(key, None)
-        self.servermap[key] = (verinfo, timestamp)
+        key = (server, shnum)
+        self._bad_shares.pop(key, None)
+        self._known_shares[key] = (verinfo, timestamp)
+
+    def add_problem(self, f):
+        self._problems.append(f)
+    def get_problems(self):
+        return self._problems
+
+    def set_last_update(self, mode, when):
+        self._last_update_mode = mode
+        self._last_update_time = when
+    def get_last_update(self):
+        return (self._last_update_mode, self._last_update_time)
  
      def dump(self, out=sys.stdout):
          print >>out, "servermap:"
  
-        for ( (peerid, shnum), (verinfo, timestamp) ) in self.servermap.items():
+        for ( (server, shnum), (verinfo, timestamp) ) in self._known_shares.items():
              (seqnum, root_hash, IV, segsize, datalength, k, N, prefix,
               offsets_tuple) = verinfo
              print >>out, ("[%s]: sh#%d seq%d-%s %d-of-%d len%d" %
-                          (idlib.shortnodeid_b2a(peerid), shnum,
+                          (server.get_name(), shnum,
                             seqnum, base32.b2a(root_hash)[:4], k, N,
                             datalength))
-        if self.problems:
-            print >>out, "%d PROBLEMS" % len(self.problems)
-            for f in self.problems:
+        if self._problems:
+            print >>out, "%d PROBLEMS" % len(self._problems)
+            for f in self._problems:
                  print >>out, str(f)
          return out
  
-    def all_peers(self):
-        return set([peerid
-                    for (peerid, shnum)
-                    in self.servermap])
+    def all_servers(self):
+        return set([server for (server, shnum) in self._known_shares])
  
-    def all_peers_for_version(self, verinfo):
-        """Return a set of peerids that hold shares for the given version."""
-        return set([peerid
-                    for ( (peerid, shnum), (verinfo2, timestamp) )
-                    in self.servermap.items()
+    def all_servers_for_version(self, verinfo):
+        """Return a set of servers that hold shares for the given version."""
+        return set([server
+                    for ( (server, shnum), (verinfo2, timestamp) )
+                    in self._known_shares.items()
                      if verinfo == verinfo2])
  
+    def get_known_shares(self):
+        # maps (server,shnum) to (versionid,timestamp)
+        return self._known_shares
+
      def make_sharemap(self):
-        """Return a dict that maps shnum to a set of peerds that hold it."""
+        """Return a dict that maps shnum to a set of servers that hold it."""
          sharemap = DictOfSets()
-        for (peerid, shnum) in self.servermap:
-            sharemap.add(shnum, peerid)
+        for (server, shnum) in self._known_shares:
+            sharemap.add(shnum, server)
          return sharemap
  
      def make_versionmap(self):
-        """Return a dict that maps versionid to sets of (shnum, peerid,
+        """Return a dict that maps versionid to sets of (shnum, server,
          timestamp) tuples."""
          versionmap = DictOfSets()
-        for ( (peerid, shnum), (verinfo, timestamp) ) in self.servermap.items():
-            versionmap.add(verinfo, (shnum, peerid, timestamp))
+        for ( (server, shnum), (verinfo, timestamp) ) in self._known_shares.items():
+            versionmap.add(verinfo, (shnum, server, timestamp))
          return versionmap
  
-    def shares_on_peer(self, peerid):
-        return set([shnum
-                    for (s_peerid, shnum)
-                    in self.servermap
-                    if s_peerid == peerid])
+    def debug_shares_on_server(self, server): # used by tests
+        return set([shnum for (s, shnum) in self._known_shares if s == server])
  
-    def version_on_peer(self, peerid, shnum):
-        key = (peerid, shnum)
-        if key in self.servermap:
-            (verinfo, timestamp) = self.servermap[key]
+    def version_on_server(self, server, shnum):
+        key = (server, shnum)
+        if key in self._known_shares:
+            (verinfo, timestamp) = self._known_shares[key]
              return verinfo
          return None
  
@@ -218,7 +239,7 @@ class ServerMap:
          all_shares = {}
          for verinfo, shares in versionmap.items():
              s = set()
-            for (shnum, peerid, timestamp) in shares:
+            for (shnum, server, timestamp) in shares:
                  s.add(shnum)
              (seqnum, root_hash, IV, segsize, datalength, k, N, prefix,
               offsets_tuple) = verinfo
@@ -244,7 +265,7 @@ class ServerMap:
          bits = []
          for (verinfo, shares) in versionmap.items():
              vstr = self.summarize_version(verinfo)
-            shnums = set([shnum for (shnum, peerid, timestamp) in shares])
+            shnums = set([shnum for (shnum, server, timestamp) in shares])
              bits.append("%d*%s" % (len(shnums), vstr))
          return "/".join(bits)
  
@@ -256,7 +277,7 @@ class ServerMap:
          for (verinfo, shares) in versionmap.items():
              (seqnum, root_hash, IV, segsize, datalength, k, N, prefix,
               offsets_tuple) = verinfo
-            shnums = set([shnum for (shnum, peerid, timestamp) in shares])
+            shnums = set([shnum for (shnum, server, timestamp) in shares])
              if len(shnums) >= k:
                  # this one is recoverable
                  recoverable_versions.add(verinfo)
@@ -272,7 +293,7 @@ class ServerMap:
          for (verinfo, shares) in versionmap.items():
              (seqnum, root_hash, IV, segsize, datalength, k, N, prefix,
               offsets_tuple) = verinfo
-            shnums = set([shnum for (shnum, peerid, timestamp) in shares])
+            shnums = set([shnum for (shnum, server, timestamp) in shares])
              if len(shnums) < k:
                  unrecoverable_versions.add(verinfo)
  
@@ -306,7 +327,7 @@ class ServerMap:
          for (verinfo, shares) in versionmap.items():
              (seqnum, root_hash, IV, segsize, datalength, k, N, prefix,
               offsets_tuple) = verinfo
-            shnums = set([shnum for (shnum, peerid, timestamp) in shares])
+            shnums = set([shnum for (shnum, server, timestamp) in shares])
              healths[verinfo] = (len(shnums),k)
              if len(shnums) < k:
                  unrecoverable.add(verinfo)
@@ -445,29 +466,21 @@ class ServermapUpdater:
          # avoid re-checking the signatures for each share.
          self._valid_versions = set()
  
-        # self.versionmap maps verinfo tuples to sets of (shnum, peerid,
-        # timestamp) tuples. This is used to figure out which versions might
-        # be retrievable, and to make the eventual data download faster.
-        self.versionmap = DictOfSets()
-
          self._done_deferred = defer.Deferred()
  
-        # first, which peers should be talk to? Any that were in our old
+        # first, which servers should be talk to? Any that were in our old
          # servermap, plus "enough" others.
  
          self._queries_completed = 0
  
          sb = self._storage_broker
-        # All of the peers, permuted by the storage index, as usual.
-        full_peerlist = [(s.get_serverid(), s.get_rref())
-                         for s in sb.get_servers_for_psi(self._storage_index)]
-        self.full_peerlist = full_peerlist # for use later, immutable
-        self.extra_peers = full_peerlist[:] # peers are removed as we use them
-        self._good_peers = set() # peers who had some shares
-        self._empty_peers = set() # peers who don't have any shares
-        self._bad_peers = set() # peers to whom our queries failed
-        self._readers = {} # peerid -> dict(sharewriters), filled in
-                           # after responses come in.
+        # All of the servers, permuted by the storage index, as usual.
+        full_serverlist = list(sb.get_servers_for_psi(self._storage_index))
+        self.full_serverlist = full_serverlist # for use later, immutable
+        self.extra_servers = full_serverlist[:] # servers are removed as we use them
+        self._good_servers = set() # servers who had some shares
+        self._empty_servers = set() # servers who don't have any shares
+        self._bad_servers = set() # servers to whom our queries failed
  
          k = self._node.get_required_shares()
          # For what cases can these conditions work?
@@ -478,23 +491,23 @@ class ServermapUpdater:
          if N is None:
              N = 10
          self.EPSILON = k
-        # we want to send queries to at least this many peers (although we
+        # we want to send queries to at least this many servers (although we
          # might not wait for all of their answers to come back)
-        self.num_peers_to_query = k + self.EPSILON
+        self.num_servers_to_query = k + self.EPSILON
  
          if self.mode == MODE_CHECK:
-            # We want to query all of the peers.
-            initial_peers_to_query = dict(full_peerlist)
-            must_query = set(initial_peers_to_query.keys())
-            self.extra_peers = []
+            # We want to query all of the servers.
+            initial_servers_to_query = list(full_serverlist)
+            must_query = set(initial_servers_to_query)
+            self.extra_servers = []
          elif self.mode == MODE_WRITE:
              # we're planning to replace all the shares, so we want a good
              # chance of finding them all. We will keep searching until we've
              # seen epsilon that don't have a share.
-            # We don't query all of the peers because that could take a while.
-            self.num_peers_to_query = N + self.EPSILON
-            initial_peers_to_query, must_query = self._build_initial_querylist()
-            self.required_num_empty_peers = self.EPSILON
+            # We don't query all of the servers because that could take a while.
+            self.num_servers_to_query = N + self.EPSILON
+            initial_servers_to_query, must_query = self._build_initial_querylist()
+            self.required_num_empty_servers = self.EPSILON
  
              # TODO: arrange to read lots of data from k-ish servers, to avoid
              # the extra round trip required to read large directories. This
@@ -502,55 +515,49 @@ class ServermapUpdater:
              # private key.
  
          else: # MODE_READ, MODE_ANYTHING
-            # 2k peers is good enough.
-            initial_peers_to_query, must_query = self._build_initial_querylist()
-
-        # this is a set of peers that we are required to get responses from:
-        # they are peers who used to have a share, so we need to know where
-        # they currently stand, even if that means we have to wait for a
-        # silently-lost TCP connection to time out. We remove peers from this
-        # set as we get responses.
-        self._must_query = must_query
-
-        # now initial_peers_to_query contains the peers that we should ask,
-        # self.must_query contains the peers that we must have heard from
-        # before we can consider ourselves finished, and self.extra_peers
-        # contains the overflow (peers that we should tap if we don't get
-        # enough responses)
+            # 2*k servers is good enough.
+            initial_servers_to_query, must_query = self._build_initial_querylist()
+
+        # this is a set of servers that we are required to get responses
+        # from: they are servers who used to have a share, so we need to know
+        # where they currently stand, even if that means we have to wait for
+        # a silently-lost TCP connection to time out. We remove servers from
+        # this set as we get responses.
+        self._must_query = set(must_query)
+
+        # now initial_servers_to_query contains the servers that we should
+        # ask, self.must_query contains the servers that we must have heard
+        # from before we can consider ourselves finished, and
+        # self.extra_servers contains the overflow (servers that we should
+        # tap if we don't get enough responses)
          # I guess that self._must_query is a subset of
-        # initial_peers_to_query?
-        assert set(must_query).issubset(set(initial_peers_to_query))
+        # initial_servers_to_query?
+        assert must_query.issubset(initial_servers_to_query)
  
-        self._send_initial_requests(initial_peers_to_query)
+        self._send_initial_requests(initial_servers_to_query)
          self._status.timings["initial_queries"] = time.time() - self._started
          return self._done_deferred
  
      def _build_initial_querylist(self):
-        initial_peers_to_query = {}
-        must_query = set()
-        for peerid in self._servermap.all_peers():
-            ss = self._servermap.connections[peerid]
-            # we send queries to everyone who was already in the sharemap
-            initial_peers_to_query[peerid] = ss
-            # and we must wait for responses from them
-            must_query.add(peerid)
-
-        while ((self.num_peers_to_query > len(initial_peers_to_query))
-               and self.extra_peers):
-            (peerid, ss) = self.extra_peers.pop(0)
-            initial_peers_to_query[peerid] = ss
-
-        return initial_peers_to_query, must_query
-
-    def _send_initial_requests(self, peerlist):
-        self._status.set_status("Sending %d initial queries" % len(peerlist))
+        # we send queries to everyone who was already in the sharemap
+        initial_servers_to_query = set(self._servermap.all_servers())
+        # and we must wait for responses from them
+        must_query = set(initial_servers_to_query)
+
+        while ((self.num_servers_to_query > len(initial_servers_to_query))
+               and self.extra_servers):
+            initial_servers_to_query.add(self.extra_servers.pop(0))
+
+        return initial_servers_to_query, must_query
+
+    def _send_initial_requests(self, serverlist):
+        self._status.set_status("Sending %d initial queries" % len(serverlist))
          self._queries_outstanding = set()
-        self._sharemap = DictOfSets() # shnum -> [(peerid, seqnum, R)..]
-        for (peerid, ss) in peerlist.items():
-            self._queries_outstanding.add(peerid)
-            self._do_query(ss, peerid, self._storage_index, self._read_size)
+        for server in serverlist:
+            self._queries_outstanding.add(server)
+            self._do_query(server, self._storage_index, self._read_size)
  
-        if not peerlist:
+        if not serverlist:
              # there is nobody to ask, so we need to short-circuit the state
              # machine.
              d = defer.maybeDeferred(self._check_for_done, None)
@@ -561,18 +568,17 @@ class ServermapUpdater:
          # might produce a result.
          return None
  
-    def _do_query(self, ss, peerid, storage_index, readsize):
-        self.log(format="sending query to [%(peerid)s], readsize=%(readsize)d",
-                 peerid=idlib.shortnodeid_b2a(peerid),
+    def _do_query(self, server, storage_index, readsize):
+        self.log(format="sending query to [%(name)s], readsize=%(readsize)d",
+                 name=server.get_name(),
                   readsize=readsize,
                   level=log.NOISY)
-        self._servermap.connections[peerid] = ss
          started = time.time()
-        self._queries_outstanding.add(peerid)
-        d = self._do_read(ss, peerid, storage_index, [], [(0, readsize)])
-        d.addCallback(self._got_results, peerid, readsize, (ss, storage_index),
+        self._queries_outstanding.add(server)
+        d = self._do_read(server, storage_index, [], [(0, readsize)])
+        d.addCallback(self._got_results, server, readsize, storage_index,
                        started)
-        d.addErrback(self._query_failed, peerid)
+        d.addErrback(self._query_failed, server)
          # errors that aren't handled by _query_failed (and errors caused by
          # _query_failed) get logged, but we still want to check for doneness.
          d.addErrback(log.err)
@@ -580,24 +586,25 @@ class ServermapUpdater:
          d.addCallback(self._check_for_done)
          return d
  
-    def _do_read(self, ss, peerid, storage_index, shnums, readv):
+    def _do_read(self, server, storage_index, shnums, readv):
+        ss = server.get_rref()
          if self._add_lease:
              # send an add-lease message in parallel. The results are handled
              # separately. This is sent before the slot_readv() so that we can
              # be sure the add_lease is retired by the time slot_readv comes
              # back (this relies upon our knowledge that the server code for
              # add_lease is synchronous).
-            renew_secret = self._node.get_renewal_secret(peerid)
-            cancel_secret = self._node.get_cancel_secret(peerid)
+            renew_secret = self._node.get_renewal_secret(server)
+            cancel_secret = self._node.get_cancel_secret(server)
              d2 = ss.callRemote("add_lease", storage_index,
                                 renew_secret, cancel_secret)
              # we ignore success
-            d2.addErrback(self._add_lease_failed, peerid, storage_index)
+            d2.addErrback(self._add_lease_failed, server, storage_index)
          d = ss.callRemote("slot_readv", storage_index, shnums, readv)
          return d
  
  
-    def _got_corrupt_share(self, e, shnum, peerid, data, lp):
+    def _got_corrupt_share(self, e, shnum, server, data, lp):
          """
          I am called when a remote server returns a corrupt share in
          response to one of our queries. By corrupt, I mean a share
@@ -608,18 +615,18 @@ class ServermapUpdater:
          self.log(format="bad share: %(f_value)s", f_value=str(f),
                   failure=f, parent=lp, level=log.WEIRD, umid="h5llHg")
          # Notify the server that its share is corrupt.
-        self.notify_server_corruption(peerid, shnum, str(e))
-        # By flagging this as a bad peer, we won't count any of
-        # the other shares on that peer as valid, though if we
+        self.notify_server_corruption(server, shnum, str(e))
+        # By flagging this as a bad server, we won't count any of
+        # the other shares on that server as valid, though if we
          # happen to find a valid version string amongst those
          # shares, we'll keep track of it so that we don't need
          # to validate the signature on those again.
-        self._bad_peers.add(peerid)
+        self._bad_servers.add(server)
          self._last_failure = f
          # XXX: Use the reader for this?
          checkstring = data[:SIGNED_PREFIX_LENGTH]
-        self._servermap.mark_bad_share(peerid, shnum, checkstring)
-        self._servermap.problems.append(f)
+        self._servermap.mark_bad_share(server, shnum, checkstring)
+        self._servermap.add_problem(f)
  
  
      def _cache_good_sharedata(self, verinfo, shnum, now, data):
@@ -635,30 +642,30 @@ class ServermapUpdater:
              self._node._add_to_cache(verinfo, shnum, 0, data)
  
  
-    def _got_results(self, datavs, peerid, readsize, stuff, started):
-        lp = self.log(format="got result from [%(peerid)s], %(numshares)d shares",
-                      peerid=idlib.shortnodeid_b2a(peerid),
+    def _got_results(self, datavs, server, readsize, storage_index, started):
+        lp = self.log(format="got result from [%(name)s], %(numshares)d shares",
+                      name=server.get_name(),
                        numshares=len(datavs))
+        ss = server.get_rref()
          now = time.time()
          elapsed = now - started
          def _done_processing(ignored=None):
-            self._queries_outstanding.discard(peerid)
-            self._servermap.reachable_peers.add(peerid)
-            self._must_query.discard(peerid)
+            self._queries_outstanding.discard(server)
+            self._servermap.mark_server_reachable(server)
+            self._must_query.discard(server)
              self._queries_completed += 1
          if not self._running:
              self.log("but we're not running, so we'll ignore it", parent=lp)
              _done_processing()
-            self._status.add_per_server_time(peerid, "late", started, elapsed)
+            self._status.add_per_server_time(server, "late", started, elapsed)
              return
-        self._status.add_per_server_time(peerid, "query", started, elapsed)
+        self._status.add_per_server_time(server, "query", started, elapsed)
  
          if datavs:
-            self._good_peers.add(peerid)
+            self._good_servers.add(server)
          else:
-            self._empty_peers.add(peerid)
+            self._empty_servers.add(server)
  
-        ss, storage_index = stuff
          ds = []
  
          for shnum,datav in datavs.items():
@@ -667,7 +674,6 @@ class ServermapUpdater:
                                         storage_index,
                                         shnum,
                                         data)
-            self._readers.setdefault(peerid, dict())[shnum] = reader
              # our goal, with each response, is to validate the version
              # information and share data as best we can at this point --
              # we do this by validating the signature. To do this, we
@@ -677,11 +683,11 @@ class ServermapUpdater:
              if not self._node.get_pubkey():
                  # fetch and set the public key.
                  d = reader.get_verification_key()
-                d.addCallback(lambda results, shnum=shnum, peerid=peerid:
-                    self._try_to_set_pubkey(results, peerid, shnum, lp))
+                d.addCallback(lambda results, shnum=shnum:
+                              self._try_to_set_pubkey(results, server, shnum, lp))
                  # XXX: Make self._pubkey_query_failed?
-                d.addErrback(lambda error, shnum=shnum, peerid=peerid, data=data:
-                    self._got_corrupt_share(error, shnum, peerid, data, lp))
+                d.addErrback(lambda error, shnum=shnum, data=data:
+                             self._got_corrupt_share(error, shnum, server, data, lp))
              else:
                  # we already have the public key.
                  d = defer.succeed(None)
@@ -695,16 +701,16 @@ class ServermapUpdater:
              #   bytes of the share on the storage server, so we
              #   shouldn't need to fetch anything at this step.
              d2 = reader.get_verinfo()
-            d2.addErrback(lambda error, shnum=shnum, peerid=peerid, data=data:
-                self._got_corrupt_share(error, shnum, peerid, data, lp))
+            d2.addErrback(lambda error, shnum=shnum, data=data:
+                          self._got_corrupt_share(error, shnum, server, data, lp))
              # - Next, we need the signature. For an SDMF share, it is
              #   likely that we fetched this when doing our initial fetch
              #   to get the version information. In MDMF, this lives at
              #   the end of the share, so unless the file is quite small,
              #   we'll need to do a remote fetch to get it.
              d3 = reader.get_signature()
-            d3.addErrback(lambda error, shnum=shnum, peerid=peerid, data=data:
-                self._got_corrupt_share(error, shnum, peerid, data, lp))
+            d3.addErrback(lambda error, shnum=shnum, data=data:
+                          self._got_corrupt_share(error, shnum, server, data, lp))
              #  Once we have all three of these responses, we can move on
              #  to validating the signature
  
@@ -712,10 +718,10 @@ class ServermapUpdater:
              # fetch it here.
              if self._need_privkey:
                  d4 = reader.get_encprivkey()
-                d4.addCallback(lambda results, shnum=shnum, peerid=peerid:
-                    self._try_to_validate_privkey(results, peerid, shnum, lp))
-                d4.addErrback(lambda error, shnum=shnum, peerid=peerid, data=data:
-                    self._privkey_query_failed(error, shnum, data, lp))
+                d4.addCallback(lambda results, shnum=shnum:
+                               self._try_to_validate_privkey(results, server, shnum, lp))
+                d4.addErrback(lambda error, shnum=shnum:
+                              self._privkey_query_failed(error, server, shnum, lp))
              else:
                  d4 = defer.succeed(None)
  
@@ -740,15 +746,15 @@ class ServermapUpdater:
  
              dl = defer.DeferredList([d, d2, d3, d4, d5])
              dl.addBoth(self._turn_barrier)
-            dl.addCallback(lambda results, shnum=shnum, peerid=peerid:
-                self._got_signature_one_share(results, shnum, peerid, lp))
+            dl.addCallback(lambda results, shnum=shnum:
+                           self._got_signature_one_share(results, shnum, server, lp))
              dl.addErrback(lambda error, shnum=shnum, data=data:
-               self._got_corrupt_share(error, shnum, peerid, data, lp))
-            dl.addCallback(lambda verinfo, shnum=shnum, peerid=peerid, data=data:
-                self._cache_good_sharedata(verinfo, shnum, now, data))
+                          self._got_corrupt_share(error, shnum, server, data, lp))
+            dl.addCallback(lambda verinfo, shnum=shnum, data=data:
+                           self._cache_good_sharedata(verinfo, shnum, now, data))
              ds.append(dl)
          # dl is a deferred list that will fire when all of the shares
-        # that we found on this peer are done processing. When dl fires,
+        # that we found on this server are done processing. When dl fires,
          # we know that processing is done, so we can decrement the
          # semaphore-like thing that we incremented earlier.
          dl = defer.DeferredList(ds, fireOnOneErrback=True)
@@ -775,31 +781,31 @@ class ServermapUpdater:
          return fireEventually(result)
  
  
-    def _try_to_set_pubkey(self, pubkey_s, peerid, shnum, lp):
+    def _try_to_set_pubkey(self, pubkey_s, server, shnum, lp):
          if self._node.get_pubkey():
              return # don't go through this again if we don't have to
          fingerprint = hashutil.ssk_pubkey_fingerprint_hash(pubkey_s)
          assert len(fingerprint) == 32
          if fingerprint != self._node.get_fingerprint():
-            raise CorruptShareError(peerid, shnum,
-                                "pubkey doesn't match fingerprint")
+            raise CorruptShareError(server, shnum,
+                                    "pubkey doesn't match fingerprint")
          self._node._populate_pubkey(self._deserialize_pubkey(pubkey_s))
          assert self._node.get_pubkey()
  
  
-    def notify_server_corruption(self, peerid, shnum, reason):
-        ss = self._servermap.connections[peerid]
-        ss.callRemoteOnly("advise_corrupt_share",
-                          "mutable", self._storage_index, shnum, reason)
+    def notify_server_corruption(self, server, shnum, reason):
+        rref = server.get_rref()
+        rref.callRemoteOnly("advise_corrupt_share",
+                            "mutable", self._storage_index, shnum, reason)
  
  
-    def _got_signature_one_share(self, results, shnum, peerid, lp):
+    def _got_signature_one_share(self, results, shnum, server, lp):
          # It is our job to give versioninfo to our caller. We need to
          # raise CorruptShareError if the share is corrupt for any
          # reason, something that our caller will handle.
-        self.log(format="_got_results: got shnum #%(shnum)d from peerid %(peerid)s",
+        self.log(format="_got_results: got shnum #%(shnum)d from serverid %(name)s",
                   shnum=shnum,
-                 peerid=idlib.shortnodeid_b2a(peerid),
+                 name=server.get_name(),
                   level=log.NOISY,
                   parent=lp)
          if not self._running:
@@ -840,14 +846,14 @@ class ServermapUpdater:
              assert self._node.get_pubkey()
              valid = self._node.get_pubkey().verify(prefix, signature[1])
              if not valid:
-                raise CorruptShareError(peerid, shnum,
+                raise CorruptShareError(server, shnum,
                                          "signature is invalid")
  
          # ok, it's a valid verinfo. Add it to the list of validated
          # versions.
          self.log(" found valid version %d-%s from %s-sh%d: %d-%d/%d/%d"
                   % (seqnum, base32.b2a(root_hash)[:4],
-                    idlib.shortnodeid_b2a(peerid), shnum,
+                    server.get_name(), shnum,
                      k, n, segsize, datalen),
                      parent=lp)
          self._valid_versions.add(verinfo)
@@ -857,8 +863,8 @@ class ServermapUpdater:
          # version info again, that its signature checks out and that
          # we're okay to skip the signature-checking step.
  
-        # (peerid, shnum) are bound in the method invocation.
-        if (peerid, shnum) in self._servermap.bad_shares:
+        # (server, shnum) are bound in the method invocation.
+        if (server, shnum) in self._servermap.get_bad_shares():
              # we've been told that the rest of the data in this share is
              # unusable, so don't add it to the servermap.
              self.log("but we've been told this is a bad share",
@@ -867,9 +873,7 @@ class ServermapUpdater:
  
          # Add the info to our servermap.
          timestamp = time.time()
-        self._servermap.add_new_share(peerid, shnum, verinfo, timestamp)
-        # and the versionmap
-        self.versionmap.add(verinfo, (shnum, peerid, timestamp))
+        self._servermap.add_new_share(server, shnum, verinfo, timestamp)
  
          return verinfo
  
@@ -914,7 +918,7 @@ class ServermapUpdater:
          return verifier
  
  
-    def _try_to_validate_privkey(self, enc_privkey, peerid, shnum, lp):
+    def _try_to_validate_privkey(self, enc_privkey, server, shnum, lp):
          """
          Given a writekey from a remote server, I validate it against the
          writekey stored in my node. If it is valid, then I set the
@@ -924,22 +928,22 @@ class ServermapUpdater:
          alleged_writekey = hashutil.ssk_writekey_hash(alleged_privkey_s)
          if alleged_writekey != self._node.get_writekey():
              self.log("invalid privkey from %s shnum %d" %
-                     (idlib.nodeid_b2a(peerid)[:8], shnum),
+                     (server.get_name(), shnum),
                       parent=lp, level=log.WEIRD, umid="aJVccw")
              return
  
          # it's good
-        self.log("got valid privkey from shnum %d on peerid %s" %
-                 (shnum, idlib.shortnodeid_b2a(peerid)),
+        self.log("got valid privkey from shnum %d on serverid %s" %
+                 (shnum, server.get_name()),
                   parent=lp)
          privkey = rsa.create_signing_key_from_string(alleged_privkey_s)
          self._node._populate_encprivkey(enc_privkey)
          self._node._populate_privkey(privkey)
          self._need_privkey = False
-        self._status.set_privkey_from(peerid)
+        self._status.set_privkey_from(server)
  
  
-    def _add_lease_failed(self, f, peerid, storage_index):
+    def _add_lease_failed(self, f, server, storage_index):
          # Older versions of Tahoe didn't handle the add-lease message very
          # well: <=1.1.0 throws a NameError because it doesn't implement
          # remote_add_lease(), 1.2.0/1.3.0 throw IndexError on unknown buckets
@@ -959,20 +963,20 @@ class ServermapUpdater:
                  # this may ignore a bit too much, but that only hurts us
                  # during debugging
                  return
-            self.log(format="error in add_lease from [%(peerid)s]: %(f_value)s",
-                     peerid=idlib.shortnodeid_b2a(peerid),
+            self.log(format="error in add_lease from [%(name)s]: %(f_value)s",
+                     name=server.get_name(),
                       f_value=str(f.value),
                       failure=f,
                       level=log.WEIRD, umid="iqg3mw")
              return
          # local errors are cause for alarm
          log.err(f,
-                format="local error in add_lease to [%(peerid)s]: %(f_value)s",
-                peerid=idlib.shortnodeid_b2a(peerid),
+                format="local error in add_lease to [%(name)s]: %(f_value)s",
+                name=server.get_name(),
                  f_value=str(f.value),
                  level=log.WEIRD, umid="ZWh6HA")
  
-    def _query_failed(self, f, peerid):
+    def _query_failed(self, f, server):
          if not self._running:
              return
          level = log.WEIRD
@@ -981,20 +985,20 @@ class ServermapUpdater:
          self.log(format="error during query: %(f_value)s",
                   f_value=str(f.value), failure=f,
                   level=level, umid="IHXuQg")
-        self._must_query.discard(peerid)
-        self._queries_outstanding.discard(peerid)
-        self._bad_peers.add(peerid)
-        self._servermap.problems.append(f)
-        # a peerid could be in both ServerMap.reachable_peers and
-        # .unreachable_peers if they responded to our query, but then an
+        self._must_query.discard(server)
+        self._queries_outstanding.discard(server)
+        self._bad_servers.add(server)
+        self._servermap.add_problem(f)
+        # a server could be in both ServerMap.reachable_servers and
+        # .unreachable_servers if they responded to our query, but then an
          # exception was raised in _got_results.
-        self._servermap.unreachable_peers.add(peerid)
+        self._servermap.mark_server_unreachable(server)
          self._queries_completed += 1
          self._last_failure = f
  
  
-    def _privkey_query_failed(self, f, peerid, shnum, lp):
-        self._queries_outstanding.discard(peerid)
+    def _privkey_query_failed(self, f, server, shnum, lp):
+        self._queries_outstanding.discard(server)
          if not self._running:
              return
          level = log.WEIRD
@@ -1003,7 +1007,7 @@ class ServermapUpdater:
          self.log(format="error during privkey query: %(f_value)s",
                   f_value=str(f.value), failure=f,
                   parent=lp, level=level, umid="McoJ5w")
-        self._servermap.problems.append(f)
+        self._servermap.add_problem(f)
          self._last_failure = f
  
  
@@ -1014,13 +1018,13 @@ class ServermapUpdater:
          #  return : keep waiting, no new queries
          lp = self.log(format=("_check_for_done, mode is '%(mode)s', "
                                "%(outstanding)d queries outstanding, "
-                              "%(extra)d extra peers available, "
-                              "%(must)d 'must query' peers left, "
+                              "%(extra)d extra servers available, "
+                              "%(must)d 'must query' servers left, "
                                "need_privkey=%(need_privkey)s"
                                ),
                        mode=self.mode,
                        outstanding=len(self._queries_outstanding),
-                      extra=len(self.extra_peers),
+                      extra=len(self.extra_servers),
                        must=len(self._must_query),
                        need_privkey=self._need_privkey,
                        level=log.NOISY,
@@ -1031,17 +1035,17 @@ class ServermapUpdater:
              return
  
          if self._must_query:
-            # we are still waiting for responses from peers that used to have
+            # we are still waiting for responses from servers that used to have
              # a share, so we must continue to wait. No additional queries are
              # required at this time.
-            self.log("%d 'must query' peers left" % len(self._must_query),
+            self.log("%d 'must query' servers left" % len(self._must_query),
                       level=log.NOISY, parent=lp)
              return
  
-        if (not self._queries_outstanding and not self.extra_peers):
-            # all queries have retired, and we have no peers left to ask. No
+        if (not self._queries_outstanding and not self.extra_servers):
+            # all queries have retired, and we have no servers left to ask. No
              # more progress can be made, therefore we are done.
-            self.log("all queries are retired, no extra peers: done",
+            self.log("all queries are retired, no extra servers: done",
                       parent=lp)
              return self._done()
  
@@ -1069,10 +1073,10 @@ class ServermapUpdater:
              # version, and we haven't seen any unrecoverable higher-seqnum'ed
              # versions, then we're done.
  
-            if self._queries_completed < self.num_peers_to_query:
+            if self._queries_completed < self.num_servers_to_query:
                  self.log(format="%(completed)d completed, %(query)d to query: need more",
                           completed=self._queries_completed,
-                         query=self.num_peers_to_query,
+                         query=self.num_servers_to_query,
                           level=log.NOISY, parent=lp)
                  return self._send_more_queries(MAX_IN_FLIGHT)
              if not recoverable_versions:
@@ -1113,15 +1117,15 @@ class ServermapUpdater:
              states = []
              found_boundary = False
  
-            for i,(peerid,ss) in enumerate(self.full_peerlist):
-                if peerid in self._bad_peers:
+            for i,server in enumerate(self.full_serverlist):
+                if server in self._bad_servers:
                      # query failed
                      states.append("x")
-                    #self.log("loop [%s]: x" % idlib.shortnodeid_b2a(peerid))
-                elif peerid in self._empty_peers:
+                    #self.log("loop [%s]: x" % server.get_name()
+                elif server in self._empty_servers:
                      # no shares
                      states.append("0")
-                    #self.log("loop [%s]: 0" % idlib.shortnodeid_b2a(peerid))
+                    #self.log("loop [%s]: 0" % server.get_name()
                      if last_found != -1:
                          num_not_found += 1
                          if num_not_found >= self.EPSILON:
@@ -1131,16 +1135,16 @@ class ServermapUpdater:
                              found_boundary = True
                              break
  
-                elif peerid in self._good_peers:
+                elif server in self._good_servers:
                      # yes shares
                      states.append("1")
-                    #self.log("loop [%s]: 1" % idlib.shortnodeid_b2a(peerid))
+                    #self.log("loop [%s]: 1" % server.get_name()
                      last_found = i
                      num_not_found = 0
                  else:
                      # not responded yet
                      states.append("?")
-                    #self.log("loop [%s]: ?" % idlib.shortnodeid_b2a(peerid))
+                    #self.log("loop [%s]: ?" % server.get_name()
                      last_not_responded = i
                      num_not_responded += 1
  
@@ -1166,7 +1170,7 @@ class ServermapUpdater:
                  return self._send_more_queries(num_not_responded)
  
              # if we hit here, we didn't find our boundary, so we're still
-            # waiting for peers
+            # waiting for servers
              self.log("no boundary yet, %s" % "".join(states), parent=lp,
                       level=log.NOISY)
              return self._send_more_queries(MAX_IN_FLIGHT)
@@ -1187,18 +1191,17 @@ class ServermapUpdater:
              active_queries = len(self._queries_outstanding) + len(more_queries)
              if active_queries >= num_outstanding:
                  break
-            if not self.extra_peers:
+            if not self.extra_servers:
                  break
-            more_queries.append(self.extra_peers.pop(0))
+            more_queries.append(self.extra_servers.pop(0))
  
          self.log(format="sending %(more)d more queries: %(who)s",
                   more=len(more_queries),
-                 who=" ".join(["[%s]" % idlib.shortnodeid_b2a(peerid)
-                               for (peerid,ss) in more_queries]),
+                 who=" ".join(["[%s]" % s.get_name() for s in more_queries]),
                   level=log.NOISY)
  
-        for (peerid, ss) in more_queries:
-            self._do_query(ss, peerid, self._storage_index, self._read_size)
+        for server in more_queries:
+            self._do_query(server, self._storage_index, self._read_size)
              # we'll retrigger when those queries come back
  
      def _done(self):
@@ -1214,8 +1217,7 @@ class ServermapUpdater:
          self._status.set_status("Finished")
          self._status.set_active(False)
  
-        self._servermap.last_update_mode = self.mode
-        self._servermap.last_update_time = self._started
+        self._servermap.set_last_update(self.mode, self._started)
          # the servermap will not be touched after this
          self.log("servermap: %s" % self._servermap.summarize_versions())
  
diff --git a/src/allmydata/storage_client.py b/src/allmydata/storage_client.py

index aa696edb92bcd1c0cf2323037d9fafb537f8526e..7a8ce0c45ee1eee99f0cf02add11d7abe239a493 100644 (file)
--- a/src/allmydata/storage_client.py
+++ b/src/allmydata/storage_client.py
@@ -137,7 +137,6 @@ class StorageFarmBroker:
              return self.servers[serverid].get_nickname()
          return None
  
-
  class IServer(Interface):
      """I live in the client, and represent a single server."""
      def start_connecting(tub, trigger_cb):
diff --git a/src/allmydata/test/common.py b/src/allmydata/test/common.py

index 5f37900391a0084fd1ccd0fdb3b87ac591eb6f2f..871163ee7a5795baadc0390796099967b7ea9af2 100644 (file)
--- a/src/allmydata/test/common.py
+++ b/src/allmydata/test/common.py
@@ -14,7 +14,6 @@ from allmydata.interfaces import IMutableFileNode, IImmutableFileNode,\
                                   MDMF_VERSION
  from allmydata.check_results import CheckResults, CheckAndRepairResults, \
       DeepCheckResults, DeepCheckAndRepairResults
-from allmydata.mutable.common import CorruptShareError
  from allmydata.mutable.layout import unpack_header
  from allmydata.mutable.publish import MutableData
  from allmydata.storage.mutable import MutableShareFile
@@ -86,7 +85,10 @@ class FakeCHKFileNode:
              r.set_recoverable(True)
              data["count-shares-good"] = 9
              data["list-corrupt-shares"] = [(nodeid, self.storage_index, 0)]
-            r.problems = failure.Failure(CorruptShareError(is_bad))
+            # XXX: this whole 'is_bad' clause is unused. When a test is added
+            # to take advantage of it, we must find a way to provide 'server'
+            # (and IServer instance) to the CorruptShareError
+            #r.problems = failure.Failure(CorruptShareError(server, 0, is_bad))
          else:
              r.set_healthy(True)
              r.set_recoverable(True)
@@ -301,9 +303,10 @@ class FakeMutableFileNode:
              r.set_healthy(False)
              r.set_recoverable(True)
              data["count-shares-good"] = 9
-            r.problems = failure.Failure(CorruptShareError("peerid",
-                                                           0, # shnum
-                                                           is_bad))
+            # XXX: this whole 'is_bad' clause is unused. When a test is added
+            # to take advantage of it, we must find a way to provide 'server'
+            # (and IServer instance) to the CorruptShareError
+            #r.problems = failure.Failure(CorruptShareError(server, 0, is_bad))
          else:
              r.set_healthy(True)
              r.set_recoverable(True)
diff --git a/src/allmydata/test/no_network.py b/src/allmydata/test/no_network.py

index abc87b182d76eb08bb67ea17ee44b846369a7407..bb9c8f2b98d8f0a77fc5602d86216bc520de7e00 100644 (file)
--- a/src/allmydata/test/no_network.py
+++ b/src/allmydata/test/no_network.py
@@ -131,6 +131,9 @@ class NoNetworkServer:
          return self.serverid
      def get_lease_seed(self):
          return self.serverid
+    def get_foolscap_write_enabler_seed(self):
+        return self.serverid
+
      def get_name(self):
          return idlib.shortnodeid_b2a(self.serverid)
      def get_longname(self):
diff --git a/src/allmydata/test/test_mutable.py b/src/allmydata/test/test_mutable.py

index 980e84511920a50e5d3a3847bb742f8aced40e81..32602bd710651e7d2f18cfef523d4bffad6ca5b0 100644 (file)
--- a/src/allmydata/test/test_mutable.py
+++ b/src/allmydata/test/test_mutable.py
@@ -1043,10 +1043,10 @@ class Servermap(unittest.TestCase, PublishMixin):
          self.failUnlessEqual(sm.recoverable_versions(), set([best]))
          self.failUnlessEqual(len(sm.shares_available()), 1)
          self.failUnlessEqual(sm.shares_available()[best], (num_shares, 3, 10))
-        shnum, peerids = sm.make_sharemap().items()[0]
-        peerid = list(peerids)[0]
-        self.failUnlessEqual(sm.version_on_peer(peerid, shnum), best)
-        self.failUnlessEqual(sm.version_on_peer(peerid, 666), None)
+        shnum, servers = sm.make_sharemap().items()[0]
+        server = list(servers)[0]
+        self.failUnlessEqual(sm.version_on_server(server, shnum), best)
+        self.failUnlessEqual(sm.version_on_server(server, 666), None)
          return sm
  
      def test_basic(self):
@@ -1116,10 +1116,10 @@ class Servermap(unittest.TestCase, PublishMixin):
              # mark the first 5 shares as corrupt, then update the servermap.
              # The map should not have the marked shares it in any more, and
              # new shares should be found to replace the missing ones.
-            for (shnum, peerid, timestamp) in shares:
+            for (shnum, server, timestamp) in shares:
                  if shnum < 5:
-                    self._corrupted.add( (peerid, shnum) )
-                    sm.mark_bad_share(peerid, shnum, "")
+                    self._corrupted.add( (server, shnum) )
+                    sm.mark_bad_share(server, shnum, "")
              return self.update_servermap(sm, MODE_WRITE)
          d.addCallback(_made_map)
          def _check_map(sm):
@@ -1127,10 +1127,10 @@ class Servermap(unittest.TestCase, PublishMixin):
              v = sm.best_recoverable_version()
              vm = sm.make_versionmap()
              shares = list(vm[v])
-            for (peerid, shnum) in self._corrupted:
-                peer_shares = sm.shares_on_peer(peerid)
-                self.failIf(shnum in peer_shares,
-                            "%d was in %s" % (shnum, peer_shares))
+            for (server, shnum) in self._corrupted:
+                server_shares = sm.debug_shares_on_server(server)
+                self.failIf(shnum in server_shares,
+                            "%d was in %s" % (shnum, server_shares))
              self.failUnlessEqual(len(shares), 5)
          d.addCallback(_check_map)
          return d
@@ -1280,7 +1280,7 @@ class Roundtrip(unittest.TestCase, testutil.ShouldFailMixin, PublishMixin):
      def do_download(self, servermap, version=None):
          if version is None:
              version = servermap.best_recoverable_version()
-        r = Retrieve(self._fn, servermap, version)
+        r = Retrieve(self._fn, self._storage_broker, servermap, version)
          c = consumer.MemoryConsumer()
          d = r.download(consumer=c)
          d.addCallback(lambda mc: "".join(mc.chunks))
@@ -1321,7 +1321,7 @@ class Roundtrip(unittest.TestCase, testutil.ShouldFailMixin, PublishMixin):
                  shares.clear()
              d1 = self.shouldFail(NotEnoughSharesError,
                                   "test_all_shares_vanished",
-                                 "ran out of peers",
+                                 "ran out of servers",
                                   self.do_download, servermap)
              return d1
          d.addCallback(_remove_shares)
@@ -1336,7 +1336,7 @@ class Roundtrip(unittest.TestCase, testutil.ShouldFailMixin, PublishMixin):
              self.failUnlessEqual(servermap.best_recoverable_version(), None)
              self.failIf(servermap.recoverable_versions())
              self.failIf(servermap.unrecoverable_versions())
-            self.failIf(servermap.all_peers())
+            self.failIf(servermap.all_servers())
          d.addCallback(_check_servermap)
          return d
  
@@ -1378,7 +1378,7 @@ class Roundtrip(unittest.TestCase, testutil.ShouldFailMixin, PublishMixin):
                  # no recoverable versions == not succeeding. The problem
                  # should be noted in the servermap's list of problems.
                  if substring:
-                    allproblems = [str(f) for f in servermap.problems]
+                    allproblems = [str(f) for f in servermap.get_problems()]
                      self.failUnlessIn(substring, "".join(allproblems))
                  return servermap
              if should_succeed:
@@ -1502,7 +1502,7 @@ class Roundtrip(unittest.TestCase, testutil.ShouldFailMixin, PublishMixin):
              f = res[0]
              self.failUnless(f.check(NotEnoughSharesError))
              self.failUnless("uncoordinated write" in str(f))
-        return self._test_corrupt_all(1, "ran out of peers",
+        return self._test_corrupt_all(1, "ran out of servers",
                                        corrupt_early=False,
                                        failure_checker=_check)
  
@@ -1540,11 +1540,11 @@ class Roundtrip(unittest.TestCase, testutil.ShouldFailMixin, PublishMixin):
                        shnums_to_corrupt=range(0, N-k))
          d.addCallback(lambda res: self.make_servermap())
          def _do_retrieve(servermap):
-            self.failUnless(servermap.problems)
+            self.failUnless(servermap.get_problems())
              self.failUnless("pubkey doesn't match fingerprint"
-                            in str(servermap.problems[0]))
+                            in str(servermap.get_problems()[0]))
              ver = servermap.best_recoverable_version()
-            r = Retrieve(self._fn, servermap, ver)
+            r = Retrieve(self._fn, self._storage_broker, servermap, ver)
              c = consumer.MemoryConsumer()
              return r.download(c)
          d.addCallback(_do_retrieve)
@@ -2488,7 +2488,7 @@ class Problems(GridTestMixin, unittest.TestCase, testutil.ShouldFailMixin):
              d.addCallback(lambda res:
                            self.shouldFail(NotEnoughSharesError,
                                            "test_retrieve_surprise",
-                                          "ran out of peers: have 0 of 1",
+                                          "ran out of servers: have 0 of 1",
                                            n.download_version,
                                            self.old_map,
                                            self.old_map.best_recoverable_version(),
@@ -2515,7 +2515,7 @@ class Problems(GridTestMixin, unittest.TestCase, testutil.ShouldFailMixin):
                  # stash the old state of the file
                  self.old_map = smap
                  # now shut down one of the servers
-                peer0 = list(smap.make_sharemap()[0])[0]
+                peer0 = list(smap.make_sharemap()[0])[0].get_serverid()
                  self.g.remove_server(peer0)
                  # then modify the file, leaving the old map untouched
                  log.msg("starting winning write")
diff --git a/src/allmydata/web/status.py b/src/allmydata/web/status.py

index cdce5ee1c36488001232f0940ee82d417bfe4500..ed28e5d6374a44a77a4eaa7edd04b554c4619f4b 100644 (file)
--- a/src/allmydata/web/status.py
+++ b/src/allmydata/web/status.py
@@ -718,7 +718,7 @@ class RetrieveStatusPage(rend.Page, RateAndTimeMixin):
          return ctx.tag["Encoding: %s of %s" % (k, n)]
  
      def render_problems(self, ctx, data):
-        problems = data.problems
+        problems = data.get_problems()
          if not problems:
              return ""
          l = T.ul()
@@ -814,15 +814,17 @@ class PublishStatusPage(rend.Page, RateAndTimeMixin):
          sharemap = servermap.make_sharemap()
          for shnum in sorted(sharemap.keys()):
              l[T.li["%d -> Placed on " % shnum,
-                   ", ".join(["[%s]" % idlib.shortnodeid_b2a(peerid)
-                              for peerid in sharemap[shnum]])]]
+                   ", ".join(["[%s]" % server.get_name()
+                              for server in sharemap[shnum]])]]
          return ctx.tag["Sharemap:", l]
  
      def render_problems(self, ctx, data):
-        problems = data.problems
+        problems = data.get_problems()
          if not problems:
              return ""
          l = T.ul()
+        # XXX: is this exercised? I don't think PublishStatus.problems is
+        # ever populated
          for peerid in sorted(problems.keys()):
              peerid_s = idlib.shortnodeid_b2a(peerid)
              l[T.li["[%s]: %s" % (peerid_s, problems[peerid])]]
author	Daira Hopwood <daira@jacaranda.org>
	Thu, 5 Sep 2013 16:32:37 +0000 (17:32 +0100)
committer	Daira Hopwood <daira@jacaranda.org>
	Thu, 5 Sep 2013 16:32:37 +0000 (17:32 +0100)
src/allmydata/immutable/downloader/status.py		patch \| blob \| history
src/allmydata/mutable/checker.py		patch \| blob \| history
src/allmydata/mutable/common.py		patch \| blob \| history
src/allmydata/mutable/filenode.py		patch \| blob \| history
src/allmydata/mutable/publish.py		patch \| blob \| history
src/allmydata/mutable/retrieve.py		patch \| blob \| history
src/allmydata/mutable/servermap.py		patch \| blob \| history
src/allmydata/storage_client.py		patch \| blob \| history
src/allmydata/test/common.py		patch \| blob \| history
src/allmydata/test/no_network.py		patch \| blob \| history
src/allmydata/test/test_mutable.py		patch \| blob \| history
src/allmydata/web/status.py		patch \| blob \| history