mirror of
https://github.com/tahoe-lafs/tahoe-lafs.git
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540 lines
24 KiB
Python
540 lines
24 KiB
Python
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import simplejson
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import os.path, shutil
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from twisted.trial import unittest
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from twisted.internet import defer
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from allmydata import check_results, uri
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from allmydata import uri as tahoe_uri
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from allmydata.util import base32
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from allmydata.web import check_results as web_check_results
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from allmydata.storage_client import StorageFarmBroker, NativeStorageServer
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from allmydata.storage.server import storage_index_to_dir
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from allmydata.monitor import Monitor
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from allmydata.test.no_network import GridTestMixin
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from allmydata.immutable.upload import Data
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from allmydata.test.common_web import WebRenderingMixin
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from allmydata.mutable.publish import MutableData
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class FakeClient:
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def get_storage_broker(self):
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return self.storage_broker
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class WebResultsRendering(unittest.TestCase, WebRenderingMixin):
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def create_fake_client(self):
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sb = StorageFarmBroker(True)
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# s.get_name() (the "short description") will be "v0-00000000".
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# s.get_longname() will include the -long suffix.
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# s.get_peerid() (i.e. tubid) will be "aaa.." or "777.." or "ceir.."
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servers = [("v0-00000000-long", "\x00"*20, "peer-0"),
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("v0-ffffffff-long", "\xff"*20, "peer-f"),
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("v0-11111111-long", "\x11"*20, "peer-11")]
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for (key_s, peerid, nickname) in servers:
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tubid_b32 = base32.b2a(peerid)
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furl = "pb://%s@nowhere/fake" % tubid_b32
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ann = { "version": 0,
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"service-name": "storage",
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"anonymous-storage-FURL": furl,
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"permutation-seed-base32": "",
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"nickname": unicode(nickname),
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"app-versions": {}, # need #466 and v2 introducer
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"my-version": "ver",
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"oldest-supported": "oldest",
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}
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s = NativeStorageServer(key_s, ann)
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sb.test_add_server(peerid, s) # XXX: maybe use key_s?
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c = FakeClient()
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c.storage_broker = sb
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return c
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def render_json(self, page):
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d = self.render1(page, args={"output": ["json"]})
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return d
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def test_literal(self):
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c = self.create_fake_client()
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lcr = web_check_results.LiteralCheckResultsRenderer(c)
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d = self.render1(lcr)
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def _check(html):
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s = self.remove_tags(html)
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self.failUnlessIn("Literal files are always healthy", s)
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d.addCallback(_check)
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d.addCallback(lambda ignored:
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self.render1(lcr, args={"return_to": ["FOOURL"]}))
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def _check_return_to(html):
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s = self.remove_tags(html)
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self.failUnlessIn("Literal files are always healthy", s)
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self.failUnlessIn('<a href="FOOURL">Return to file.</a>',
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html)
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d.addCallback(_check_return_to)
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d.addCallback(lambda ignored: self.render_json(lcr))
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def _check_json(json):
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j = simplejson.loads(json)
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self.failUnlessEqual(j["storage-index"], "")
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self.failUnlessEqual(j["results"]["healthy"], True)
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d.addCallback(_check_json)
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return d
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def test_check(self):
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c = self.create_fake_client()
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sb = c.storage_broker
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serverid_1 = "\x00"*20
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serverid_f = "\xff"*20
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server_1 = sb.get_stub_server(serverid_1)
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server_f = sb.get_stub_server(serverid_f)
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u = uri.CHKFileURI("\x00"*16, "\x00"*32, 3, 10, 1234)
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data = { "count_happiness": 8,
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"count_shares_needed": 3,
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"count_shares_expected": 9,
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"count_shares_good": 10,
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"count_good_share_hosts": 11,
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"count_recoverable_versions": 1,
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"count_unrecoverable_versions": 0,
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"servers_responding": [],
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"sharemap": {"shareid1": [server_1, server_f]},
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"count_wrong_shares": 0,
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"list_corrupt_shares": [],
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"count_corrupt_shares": 0,
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"list_incompatible_shares": [],
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"count_incompatible_shares": 0,
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"report": [], "share_problems": [], "servermap": None,
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}
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cr = check_results.CheckResults(u, u.get_storage_index(),
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healthy=True, recoverable=True,
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summary="groovy",
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**data)
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w = web_check_results.CheckResultsRenderer(c, cr)
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html = self.render2(w)
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s = self.remove_tags(html)
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self.failUnlessIn("File Check Results for SI=2k6avp", s) # abbreviated
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self.failUnlessIn("Healthy : groovy", s)
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self.failUnlessIn("Share Counts: need 3-of-9, have 10", s)
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self.failUnlessIn("Happiness Level: 8", s)
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self.failUnlessIn("Hosts with good shares: 11", s)
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self.failUnlessIn("Corrupt shares: none", s)
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self.failUnlessIn("Wrong Shares: 0", s)
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self.failUnlessIn("Recoverable Versions: 1", s)
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self.failUnlessIn("Unrecoverable Versions: 0", s)
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self.failUnlessIn("Good Shares (sorted in share order): Share ID Nickname Node ID shareid1 peer-0 00000000 peer-f ffffffff", s)
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cr = check_results.CheckResults(u, u.get_storage_index(),
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healthy=False, recoverable=True,
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summary="ungroovy",
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**data)
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w = web_check_results.CheckResultsRenderer(c, cr)
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html = self.render2(w)
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s = self.remove_tags(html)
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self.failUnlessIn("File Check Results for SI=2k6avp", s) # abbreviated
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self.failUnlessIn("Not Healthy! : ungroovy", s)
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data["count_corrupt_shares"] = 1
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data["list_corrupt_shares"] = [(server_1, u.get_storage_index(), 2)]
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cr = check_results.CheckResults(u, u.get_storage_index(),
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healthy=False, recoverable=False,
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summary="rather dead",
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**data)
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w = web_check_results.CheckResultsRenderer(c, cr)
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html = self.render2(w)
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s = self.remove_tags(html)
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self.failUnlessIn("File Check Results for SI=2k6avp", s) # abbreviated
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self.failUnlessIn("Not Recoverable! : rather dead", s)
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self.failUnlessIn("Corrupt shares: Share ID Nickname Node ID sh#2 peer-0 00000000", s)
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html = self.render2(w)
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s = self.remove_tags(html)
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self.failUnlessIn("File Check Results for SI=2k6avp", s) # abbreviated
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self.failUnlessIn("Not Recoverable! : rather dead", s)
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html = self.render2(w, args={"return_to": ["FOOURL"]})
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self.failUnlessIn('<a href="FOOURL">Return to file/directory.</a>',
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html)
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d = self.render_json(w)
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def _check_json(jdata):
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j = simplejson.loads(jdata)
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self.failUnlessEqual(j["summary"], "rather dead")
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self.failUnlessEqual(j["storage-index"],
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"2k6avpjga3dho3zsjo6nnkt7n4")
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expected = {'count-happiness': 8,
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'count-shares-expected': 9,
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'healthy': False,
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'count-unrecoverable-versions': 0,
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'count-shares-needed': 3,
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'sharemap': {"shareid1":
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["v0-00000000-long", "v0-ffffffff-long"]},
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'count-recoverable-versions': 1,
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'list-corrupt-shares':
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[["v0-00000000-long", "2k6avpjga3dho3zsjo6nnkt7n4", 2]],
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'count-good-share-hosts': 11,
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'count-wrong-shares': 0,
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'count-shares-good': 10,
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'count-corrupt-shares': 1,
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'servers-responding': [],
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'recoverable': False,
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}
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self.failUnlessEqual(j["results"], expected)
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d.addCallback(_check_json)
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d.addCallback(lambda ignored: self.render1(w))
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def _check(html):
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s = self.remove_tags(html)
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self.failUnlessIn("File Check Results for SI=2k6avp", s)
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self.failUnlessIn("Not Recoverable! : rather dead", s)
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d.addCallback(_check)
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return d
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def test_check_and_repair(self):
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c = self.create_fake_client()
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sb = c.storage_broker
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serverid_1 = "\x00"*20
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serverid_f = "\xff"*20
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u = uri.CHKFileURI("\x00"*16, "\x00"*32, 3, 10, 1234)
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data = { "count_happiness": 5,
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"count_shares_needed": 3,
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"count_shares_expected": 10,
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"count_shares_good": 6,
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"count_good_share_hosts": 7,
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"count_recoverable_versions": 1,
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"count_unrecoverable_versions": 0,
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"servers_responding": [],
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"sharemap": {"shareid1": [sb.get_stub_server(serverid_1),
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sb.get_stub_server(serverid_f)]},
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"count_wrong_shares": 0,
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"list_corrupt_shares": [],
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"count_corrupt_shares": 0,
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"list_incompatible_shares": [],
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"count_incompatible_shares": 0,
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"report": [], "share_problems": [], "servermap": None,
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}
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pre_cr = check_results.CheckResults(u, u.get_storage_index(),
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healthy=False, recoverable=True,
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summary="illing",
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**data)
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data = { "count_happiness": 9,
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"count_shares_needed": 3,
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"count_shares_expected": 10,
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"count_shares_good": 10,
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"count_good_share_hosts": 11,
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"count_recoverable_versions": 1,
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"count_unrecoverable_versions": 0,
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"servers_responding": [],
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"sharemap": {"shareid1": [sb.get_stub_server(serverid_1),
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sb.get_stub_server(serverid_f)]},
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"count_wrong_shares": 0,
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"count_corrupt_shares": 0,
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"list_corrupt_shares": [],
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"list_incompatible_shares": [],
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"count_incompatible_shares": 0,
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"report": [], "share_problems": [], "servermap": None,
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}
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post_cr = check_results.CheckResults(u, u.get_storage_index(),
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healthy=True, recoverable=True,
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summary="groovy",
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**data)
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crr = check_results.CheckAndRepairResults(u.get_storage_index())
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crr.pre_repair_results = pre_cr
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crr.post_repair_results = post_cr
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crr.repair_attempted = False
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w = web_check_results.CheckAndRepairResultsRenderer(c, crr)
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html = self.render2(w)
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s = self.remove_tags(html)
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self.failUnlessIn("File Check-And-Repair Results for SI=2k6avp", s)
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self.failUnlessIn("Healthy : groovy", s)
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self.failUnlessIn("No repair necessary", s)
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self.failUnlessIn("Post-Repair Checker Results:", s)
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self.failUnlessIn("Share Counts: need 3-of-10, have 10", s)
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crr.repair_attempted = True
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crr.repair_successful = True
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html = self.render2(w)
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s = self.remove_tags(html)
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self.failUnlessIn("File Check-And-Repair Results for SI=2k6avp", s)
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self.failUnlessIn("Healthy : groovy", s)
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self.failUnlessIn("Repair successful", s)
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self.failUnlessIn("Post-Repair Checker Results:", s)
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crr.repair_attempted = True
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crr.repair_successful = False
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post_cr = check_results.CheckResults(u, u.get_storage_index(),
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healthy=False, recoverable=True,
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summary="better",
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**data)
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crr.post_repair_results = post_cr
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html = self.render2(w)
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s = self.remove_tags(html)
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self.failUnlessIn("File Check-And-Repair Results for SI=2k6avp", s)
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self.failUnlessIn("Not Healthy! : better", s)
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self.failUnlessIn("Repair unsuccessful", s)
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self.failUnlessIn("Post-Repair Checker Results:", s)
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crr.repair_attempted = True
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crr.repair_successful = False
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post_cr = check_results.CheckResults(u, u.get_storage_index(),
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healthy=False, recoverable=False,
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summary="worse",
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**data)
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crr.post_repair_results = post_cr
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html = self.render2(w)
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s = self.remove_tags(html)
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self.failUnlessIn("File Check-And-Repair Results for SI=2k6avp", s)
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self.failUnlessIn("Not Recoverable! : worse", s)
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self.failUnlessIn("Repair unsuccessful", s)
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self.failUnlessIn("Post-Repair Checker Results:", s)
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d = self.render_json(w)
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def _got_json(data):
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j = simplejson.loads(data)
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self.failUnlessEqual(j["repair-attempted"], True)
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self.failUnlessEqual(j["storage-index"],
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"2k6avpjga3dho3zsjo6nnkt7n4")
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self.failUnlessEqual(j["pre-repair-results"]["summary"], "illing")
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self.failUnlessEqual(j["post-repair-results"]["summary"], "worse")
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d.addCallback(_got_json)
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w2 = web_check_results.CheckAndRepairResultsRenderer(c, None)
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d.addCallback(lambda ignored: self.render_json(w2))
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def _got_lit_results(data):
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j = simplejson.loads(data)
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self.failUnlessEqual(j["repair-attempted"], False)
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self.failUnlessEqual(j["storage-index"], "")
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d.addCallback(_got_lit_results)
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return d
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class BalancingAct(GridTestMixin, unittest.TestCase):
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# test for #1115 regarding the 'count-good-share-hosts' metric
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def add_server(self, server_number, readonly=False):
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assert self.g, "I tried to find a grid at self.g, but failed"
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ss = self.g.make_server(server_number, readonly)
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#log.msg("just created a server, number: %s => %s" % (server_number, ss,))
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self.g.add_server(server_number, ss)
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def add_server_with_share(self, server_number, uri, share_number=None,
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readonly=False):
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self.add_server(server_number, readonly)
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if share_number is not None:
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self.copy_share_to_server(uri, share_number, server_number)
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def copy_share_to_server(self, uri, share_number, server_number):
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ss = self.g.servers_by_number[server_number]
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# Copy share i from the directory associated with the first
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# storage server to the directory associated with this one.
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assert self.g, "I tried to find a grid at self.g, but failed"
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assert self.shares, "I tried to find shares at self.shares, but failed"
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old_share_location = self.shares[share_number][2]
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new_share_location = os.path.join(ss.storedir, "shares")
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si = tahoe_uri.from_string(self.uri).get_storage_index()
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new_share_location = os.path.join(new_share_location,
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storage_index_to_dir(si))
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if not os.path.exists(new_share_location):
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os.makedirs(new_share_location)
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new_share_location = os.path.join(new_share_location,
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str(share_number))
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if old_share_location != new_share_location:
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shutil.copy(old_share_location, new_share_location)
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shares = self.find_uri_shares(uri)
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# Make sure that the storage server has the share.
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self.failUnless((share_number, ss.my_nodeid, new_share_location)
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in shares)
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def _pretty_shares_chart(self, uri):
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# Servers are labeled A-Z, shares are labeled 0-9
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letters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
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assert len(self.g.servers_by_number) < len(letters), \
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"This little printing function is only meant for < 26 servers"
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shares_chart = {}
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names = dict(zip([ss.my_nodeid
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for _,ss in self.g.servers_by_number.iteritems()],
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letters))
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for shnum, serverid, _ in self.find_uri_shares(uri):
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shares_chart.setdefault(shnum, []).append(names[serverid])
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return shares_chart
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def test_good_share_hosts(self):
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self.basedir = "checker/BalancingAct/1115"
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self.set_up_grid(num_servers=1)
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c0 = self.g.clients[0]
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c0.encoding_params['happy'] = 1
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c0.encoding_params['n'] = 4
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c0.encoding_params['k'] = 3
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DATA = "data" * 100
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d = c0.upload(Data(DATA, convergence=""))
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def _stash_immutable(ur):
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self.imm = c0.create_node_from_uri(ur.get_uri())
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self.uri = self.imm.get_uri()
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d.addCallback(_stash_immutable)
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d.addCallback(lambda ign:
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self.find_uri_shares(self.uri))
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def _store_shares(shares):
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self.shares = shares
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d.addCallback(_store_shares)
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def add_three(_, i):
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# Add a new server with just share 3
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self.add_server_with_share(i, self.uri, 3)
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#print self._pretty_shares_chart(self.uri)
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for i in range(1,5):
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d.addCallback(add_three, i)
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def _check_and_repair(_):
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return self.imm.check_and_repair(Monitor())
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def _check_counts(crr, shares_good, good_share_hosts):
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prr = crr.get_post_repair_results()
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#print self._pretty_shares_chart(self.uri)
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self.failUnlessEqual(prr.get_share_counter_good(), shares_good)
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self.failUnlessEqual(prr.get_host_counter_good_shares(),
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good_share_hosts)
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"""
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Initial sharemap:
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0:[A] 1:[A] 2:[A] 3:[A,B,C,D,E]
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4 good shares, but 5 good hosts
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After deleting all instances of share #3 and repairing:
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0:[A,B], 1:[A,C], 2:[A,D], 3:[E]
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Still 4 good shares and 5 good hosts
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"""
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d.addCallback(_check_and_repair)
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d.addCallback(_check_counts, 4, 5)
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d.addCallback(lambda _: self.delete_shares_numbered(self.uri, [3]))
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d.addCallback(_check_and_repair)
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d.addCallback(_check_counts, 4, 5)
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d.addCallback(lambda _: [self.g.break_server(sid)
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for sid in self.g.get_all_serverids()])
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d.addCallback(_check_and_repair)
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d.addCallback(_check_counts, 0, 0)
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return d
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class AddLease(GridTestMixin, unittest.TestCase):
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# test for #875, in which failures in the add-lease call cause
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# false-negatives in the checker
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def test_875(self):
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self.basedir = "checker/AddLease/875"
|
|
self.set_up_grid(num_servers=1)
|
|
c0 = self.g.clients[0]
|
|
c0.encoding_params['happy'] = 1
|
|
self.uris = {}
|
|
DATA = "data" * 100
|
|
d = c0.upload(Data(DATA, convergence=""))
|
|
def _stash_immutable(ur):
|
|
self.imm = c0.create_node_from_uri(ur.get_uri())
|
|
d.addCallback(_stash_immutable)
|
|
d.addCallback(lambda ign:
|
|
c0.create_mutable_file(MutableData("contents")))
|
|
def _stash_mutable(node):
|
|
self.mut = node
|
|
d.addCallback(_stash_mutable)
|
|
|
|
def _check_cr(cr, which):
|
|
self.failUnless(cr.is_healthy(), which)
|
|
|
|
# these two should work normally
|
|
d.addCallback(lambda ign: self.imm.check(Monitor(), add_lease=True))
|
|
d.addCallback(_check_cr, "immutable-normal")
|
|
d.addCallback(lambda ign: self.mut.check(Monitor(), add_lease=True))
|
|
d.addCallback(_check_cr, "mutable-normal")
|
|
|
|
really_did_break = []
|
|
# now break the server's remote_add_lease call
|
|
def _break_add_lease(ign):
|
|
def broken_add_lease(*args, **kwargs):
|
|
really_did_break.append(1)
|
|
raise KeyError("intentional failure, should be ignored")
|
|
assert self.g.servers_by_number[0].remote_add_lease
|
|
self.g.servers_by_number[0].remote_add_lease = broken_add_lease
|
|
d.addCallback(_break_add_lease)
|
|
|
|
# and confirm that the files still look healthy
|
|
d.addCallback(lambda ign: self.mut.check(Monitor(), add_lease=True))
|
|
d.addCallback(_check_cr, "mutable-broken")
|
|
d.addCallback(lambda ign: self.imm.check(Monitor(), add_lease=True))
|
|
d.addCallback(_check_cr, "immutable-broken")
|
|
|
|
d.addCallback(lambda ign: self.failUnless(really_did_break))
|
|
return d
|
|
|
|
class CounterHolder(object):
|
|
def __init__(self):
|
|
self._num_active_block_fetches = 0
|
|
self._max_active_block_fetches = 0
|
|
|
|
from allmydata.immutable.checker import ValidatedReadBucketProxy
|
|
class MockVRBP(ValidatedReadBucketProxy):
|
|
def __init__(self, sharenum, bucket, share_hash_tree, num_blocks, block_size, share_size, counterholder):
|
|
ValidatedReadBucketProxy.__init__(self, sharenum, bucket,
|
|
share_hash_tree, num_blocks,
|
|
block_size, share_size)
|
|
self.counterholder = counterholder
|
|
|
|
def get_block(self, blocknum):
|
|
self.counterholder._num_active_block_fetches += 1
|
|
if self.counterholder._num_active_block_fetches > self.counterholder._max_active_block_fetches:
|
|
self.counterholder._max_active_block_fetches = self.counterholder._num_active_block_fetches
|
|
d = ValidatedReadBucketProxy.get_block(self, blocknum)
|
|
def _mark_no_longer_active(res):
|
|
self.counterholder._num_active_block_fetches -= 1
|
|
return res
|
|
d.addBoth(_mark_no_longer_active)
|
|
return d
|
|
|
|
class TooParallel(GridTestMixin, unittest.TestCase):
|
|
# bug #1395: immutable verifier was aggressively parallized, checking all
|
|
# blocks of all shares at the same time, blowing our memory budget and
|
|
# crashing with MemoryErrors on >1GB files.
|
|
|
|
def test_immutable(self):
|
|
import allmydata.immutable.checker
|
|
origVRBP = allmydata.immutable.checker.ValidatedReadBucketProxy
|
|
|
|
self.basedir = "checker/TooParallel/immutable"
|
|
|
|
# If any code asks to instantiate a ValidatedReadBucketProxy,
|
|
# we give them a MockVRBP which is configured to use our
|
|
# CounterHolder.
|
|
counterholder = CounterHolder()
|
|
def make_mock_VRBP(*args, **kwargs):
|
|
return MockVRBP(counterholder=counterholder, *args, **kwargs)
|
|
allmydata.immutable.checker.ValidatedReadBucketProxy = make_mock_VRBP
|
|
|
|
d = defer.succeed(None)
|
|
def _start(ign):
|
|
self.set_up_grid(num_servers=4)
|
|
self.c0 = self.g.clients[0]
|
|
self.c0.encoding_params = { "k": 1,
|
|
"happy": 4,
|
|
"n": 4,
|
|
"max_segment_size": 5,
|
|
}
|
|
self.uris = {}
|
|
DATA = "data" * 100 # 400/5 = 80 blocks
|
|
return self.c0.upload(Data(DATA, convergence=""))
|
|
d.addCallback(_start)
|
|
def _do_check(ur):
|
|
n = self.c0.create_node_from_uri(ur.get_uri())
|
|
return n.check(Monitor(), verify=True)
|
|
d.addCallback(_do_check)
|
|
def _check(cr):
|
|
# the verifier works on all 4 shares in parallel, but only
|
|
# fetches one block from each share at a time, so we expect to
|
|
# see 4 parallel fetches
|
|
self.failUnlessEqual(counterholder._max_active_block_fetches, 4)
|
|
d.addCallback(_check)
|
|
def _clean_up(res):
|
|
allmydata.immutable.checker.ValidatedReadBucketProxy = origVRBP
|
|
return res
|
|
d.addBoth(_clean_up)
|
|
return d
|
|
|
|
test_immutable.timeout = 80
|