]> git.rkrishnan.org Git - tahoe-lafs/tahoe-lafs.git/blobdiff - src/allmydata/test/no_network.py
Remove ResponseCache in favor of MDMFSlotReadProxy's cache. closes #1240.
[tahoe-lafs/tahoe-lafs.git] / src / allmydata / test / no_network.py
index 771dffd24b93a41e4b0e43f67385a20faf51e04b..67469842dd7bb13a8d886ea22fd743923c11100f 100644 (file)
@@ -26,7 +26,9 @@ from allmydata.storage.server import StorageServer, storage_index_to_dir
 from allmydata.util import fileutil, idlib, hashutil
 from allmydata.util.hashutil import sha1
 from allmydata.test.common_web import HTTPClientGETFactory
-from allmydata.interfaces import IStorageBroker
+from allmydata.interfaces import IStorageBroker, IServer
+from allmydata.test.common import TEST_RSA_KEY_SIZE
+
 
 class IntentionalError(Exception):
     pass
@@ -41,6 +43,10 @@ class LocalWrapper:
         self.hung_until = None
         self.post_call_notifier = None
         self.disconnectors = {}
+        self.counter_by_methname = {}
+
+    def _clear_counters(self):
+        self.counter_by_methname = {}
 
     def callRemoteOnly(self, methname, *args, **kwargs):
         d = self.callRemote(methname, *args, **kwargs)
@@ -60,11 +66,15 @@ class LocalWrapper:
         kwargs = dict([(k,wrap(kwargs[k])) for k in kwargs])
 
         def _really_call():
+            def incr(d, k): d[k] = d.setdefault(k, 0) + 1
+            incr(self.counter_by_methname, methname)
             meth = getattr(self.original, "remote_" + methname)
             return meth(*args, **kwargs)
 
         def _call():
             if self.broken:
+                if self.broken is not True: # a counter, not boolean
+                    self.broken -= 1
                 raise IntentionalError("I was asked to break")
             if self.hung_until:
                 d2 = defer.Deferred()
@@ -117,13 +127,49 @@ def wrap_storage_server(original):
     wrapper.version = original.remote_get_version()
     return wrapper
 
+class NoNetworkServer:
+    implements(IServer)
+    def __init__(self, serverid, rref):
+        self.serverid = serverid
+        self.rref = rref
+    def __repr__(self):
+        return "<NoNetworkServer for %s>" % self.get_name()
+    # Special method used by copy.copy() and copy.deepcopy(). When those are
+    # used in allmydata.immutable.filenode to copy CheckResults during
+    # repair, we want it to treat the IServer instances as singletons.
+    def __copy__(self):
+        return self
+    def __deepcopy__(self, memodict):
+        return self
+    def get_serverid(self):
+        return self.serverid
+    def get_permutation_seed(self):
+        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):
+        return idlib.nodeid_b2a(self.serverid)
+    def get_nickname(self):
+        return "nickname"
+    def get_rref(self):
+        return self.rref
+    def get_version(self):
+        return self.rref.version
+
 class NoNetworkStorageBroker:
     implements(IStorageBroker)
-    def get_servers_for_index(self, key):
-        return sorted(self.client._servers,
-                      key=lambda x: sha1(key+x[0]).digest())
-    def get_all_servers(self):
-        return frozenset(self.client._servers)
+    def get_servers_for_psi(self, peer_selection_index):
+        def _permuted(server):
+            seed = server.get_permutation_seed()
+            return sha1(peer_selection_index + seed).digest()
+        return sorted(self.get_connected_servers(), key=_permuted)
+    def get_connected_servers(self):
+        return self.client._servers
     def get_nickname_for_serverid(self, serverid):
         return None
 
@@ -181,8 +227,10 @@ class NoNetworkGrid(service.MultiService):
         self.basedir = basedir
         fileutil.make_dirs(basedir)
 
-        self.servers_by_number = {}
-        self.servers_by_id = {}
+        self.servers_by_number = {} # maps to StorageServer instance
+        self.wrappers_by_id = {} # maps to wrapped StorageServer instance
+        self.proxies_by_id = {} # maps to IServer on which .rref is a wrapped
+                                # StorageServer
         self.clients = []
 
         for i in range(num_servers):
@@ -209,7 +257,7 @@ class NoNetworkGrid(service.MultiService):
                 c = client_config_hooks[i](clientdir)
             if not c:
                 c = NoNetworkClient(clientdir)
-                c.set_default_mutable_keysize(522)
+                c.set_default_mutable_keysize(TEST_RSA_KEY_SIZE)
             c.nodeid = clientid
             c.short_nodeid = b32encode(clientid).lower()[:8]
             c._servers = self.all_servers # can be updated later
@@ -219,10 +267,11 @@ class NoNetworkGrid(service.MultiService):
     def make_server(self, i, readonly=False):
         serverid = hashutil.tagged_hash("serverid", str(i))[:20]
         serverdir = os.path.join(self.basedir, "servers",
-                                 idlib.shortnodeid_b2a(serverid))
+                                 idlib.shortnodeid_b2a(serverid), "storage")
         fileutil.make_dirs(serverdir)
         ss = StorageServer(serverdir, serverid, stats_provider=SimpleStats(),
                            readonly_storage=readonly)
+        ss._no_network_server_number = i
         return ss
 
     def add_server(self, i, ss):
@@ -233,11 +282,16 @@ class NoNetworkGrid(service.MultiService):
         ss.setServiceParent(middleman)
         serverid = ss.my_nodeid
         self.servers_by_number[i] = ss
-        self.servers_by_id[serverid] = wrap_storage_server(ss)
+        wrapper = wrap_storage_server(ss)
+        self.wrappers_by_id[serverid] = wrapper
+        self.proxies_by_id[serverid] = NoNetworkServer(serverid, wrapper)
         self.rebuild_serverlist()
 
+    def get_all_serverids(self):
+        return self.proxies_by_id.keys()
+
     def rebuild_serverlist(self):
-        self.all_servers = frozenset(self.servers_by_id.items())
+        self.all_servers = frozenset(self.proxies_by_id.values())
         for c in self.clients:
             c._servers = self.all_servers
 
@@ -248,23 +302,26 @@ class NoNetworkGrid(service.MultiService):
             if ss.my_nodeid == serverid:
                 del self.servers_by_number[i]
                 break
-        del self.servers_by_id[serverid]
+        del self.wrappers_by_id[serverid]
+        del self.proxies_by_id[serverid]
         self.rebuild_serverlist()
+        return ss
 
-    def break_server(self, serverid):
+    def break_server(self, serverid, count=True):
         # mark the given server as broken, so it will throw exceptions when
-        # asked to hold a share or serve a share
-        self.servers_by_id[serverid].broken = True
+        # asked to hold a share or serve a share. If count= is a number,
+        # throw that many exceptions before starting to work again.
+        self.wrappers_by_id[serverid].broken = count
 
     def hang_server(self, serverid):
         # hang the given server
-        ss = self.servers_by_id[serverid]
+        ss = self.wrappers_by_id[serverid]
         assert ss.hung_until is None
         ss.hung_until = defer.Deferred()
 
     def unhang_server(self, serverid):
         # unhang the given server
-        ss = self.servers_by_id[serverid]
+        ss = self.wrappers_by_id[serverid]
         assert ss.hung_until is not None
         ss.hung_until.callback(None)
         ss.hung_until = None
@@ -286,10 +343,10 @@ class GridTestMixin:
                                num_servers=num_servers,
                                client_config_hooks=client_config_hooks)
         self.g.setServiceParent(self.s)
-        self.client_webports = [c.getServiceNamed("webish").listener._port.getHost().port
+        self.client_webports = [c.getServiceNamed("webish").getPortnum()
+                                for c in self.g.clients]
+        self.client_baseurls = [c.getServiceNamed("webish").getURL()
                                 for c in self.g.clients]
-        self.client_baseurls = ["http://localhost:%d/" % p
-                                for p in self.client_webports]
 
     def get_clientdir(self, i=0):
         return self.g.clients[i].basedir
@@ -308,7 +365,7 @@ class GridTestMixin:
         shares = []
         for i,ss in self.g.servers_by_number.items():
             serverid = ss.my_nodeid
-            basedir = os.path.join(ss.storedir, "shares", prefixdir)
+            basedir = os.path.join(ss.sharedir, prefixdir)
             if not os.path.exists(basedir):
                 continue
             for f in os.listdir(basedir):
@@ -319,6 +376,16 @@ class GridTestMixin:
                     pass
         return sorted(shares)
 
+    def copy_shares(self, uri):
+        shares = {}
+        for (shnum, serverid, sharefile) in self.find_uri_shares(uri):
+            shares[sharefile] = open(sharefile, "rb").read()
+        return shares
+
+    def restore_all_shares(self, shares):
+        for sharefile, data in shares.items():
+            open(sharefile, "wb").write(data)
+
     def delete_share(self, (shnum, serverid, sharefile)):
         os.unlink(sharefile)
 
@@ -339,6 +406,12 @@ class GridTestMixin:
                 corruptdata = corruptor(sharedata, debug=debug)
                 open(i_sharefile, "wb").write(corruptdata)
 
+    def corrupt_all_shares(self, uri, corruptor, debug=False):
+        for (i_shnum, i_serverid, i_sharefile) in self.find_uri_shares(uri):
+            sharedata = open(i_sharefile, "rb").read()
+            corruptdata = corruptor(sharedata, debug=debug)
+            open(i_sharefile, "wb").write(corruptdata)
+
     def GET(self, urlpath, followRedirect=False, return_response=False,
             method="GET", clientnum=0, **kwargs):
         # if return_response=True, this fires with (data, statuscode,
@@ -354,3 +427,6 @@ class GridTestMixin:
         if return_response:
             d.addCallback(_got_data)
         return factory.deferred
+
+    def PUT(self, urlpath, **kwargs):
+        return self.GET(urlpath, method="PUT", **kwargs)