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+# Copyright 2011-2012 Canonical Ltd.
+#
+# This file is part of u1db.
+#
+# u1db is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License version 3
+# as published by the Free Software Foundation.
+#
+# u1db is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with u1db. If not, see <http://www.gnu.org/licenses/>.
+
+"""The Synchronization class for U1DB."""
+
+import os
+from wsgiref import simple_server
+
+from u1db import (
+ errors,
+ sync,
+ vectorclock,
+ SyncTarget,
+ )
+
+from leap.soledad.tests import u1db_tests as tests
+
+from u1db.backends import (
+ inmemory,
+ )
+from u1db.remote import (
+ http_target,
+ )
+
+from leap.soledad.tests.u1db_tests.test_remote_sync_target import (
+ make_http_app,
+ make_oauth_http_app,
+ )
+
+simple_doc = tests.simple_doc
+nested_doc = tests.nested_doc
+
+
+def _make_local_db_and_target(test):
+ db = test.create_database('test')
+ st = db.get_sync_target()
+ return db, st
+
+
+def _make_local_db_and_http_target(test, path='test'):
+ test.startServer()
+ db = test.request_state._create_database(os.path.basename(path))
+ st = http_target.HTTPSyncTarget.connect(test.getURL(path))
+ return db, st
+
+
+def _make_local_db_and_oauth_http_target(test):
+ db, st = _make_local_db_and_http_target(test, '~/test')
+ st.set_oauth_credentials(tests.consumer1.key, tests.consumer1.secret,
+ tests.token1.key, tests.token1.secret)
+ return db, st
+
+
+target_scenarios = [
+ ('local', {'create_db_and_target': _make_local_db_and_target}),
+ ('http', {'create_db_and_target': _make_local_db_and_http_target,
+ 'make_app_with_state': make_http_app}),
+ ('oauth_http', {'create_db_and_target':
+ _make_local_db_and_oauth_http_target,
+ 'make_app_with_state': make_oauth_http_app}),
+ ]
+
+
+class DatabaseSyncTargetTests(tests.DatabaseBaseTests,
+ tests.TestCaseWithServer):
+
+ scenarios = (tests.multiply_scenarios(tests.DatabaseBaseTests.scenarios,
+ target_scenarios))
+ #+ c_db_scenarios)
+ # whitebox true means self.db is the actual local db object
+ # against which the sync is performed
+ whitebox = True
+
+ def setUp(self):
+ super(DatabaseSyncTargetTests, self).setUp()
+ self.db, self.st = self.create_db_and_target(self)
+ self.other_changes = []
+
+ def tearDown(self):
+ # We delete them explicitly, so that connections are cleanly closed
+ del self.st
+ self.db.close()
+ del self.db
+ super(DatabaseSyncTargetTests, self).tearDown()
+
+ def receive_doc(self, doc, gen, trans_id):
+ self.other_changes.append(
+ (doc.doc_id, doc.rev, doc.get_json(), gen, trans_id))
+
+ def set_trace_hook(self, callback, shallow=False):
+ setter = (self.st._set_trace_hook if not shallow else
+ self.st._set_trace_hook_shallow)
+ try:
+ setter(callback)
+ except NotImplementedError:
+ self.skipTest("%s does not implement _set_trace_hook"
+ % (self.st.__class__.__name__,))
+
+ def test_get_sync_target(self):
+ self.assertIsNot(None, self.st)
+
+ def test_get_sync_info(self):
+ self.assertEqual(
+ ('test', 0, '', 0, ''), self.st.get_sync_info('other'))
+
+ def test_create_doc_updates_sync_info(self):
+ self.assertEqual(
+ ('test', 0, '', 0, ''), self.st.get_sync_info('other'))
+ self.db.create_doc_from_json(simple_doc)
+ self.assertEqual(1, self.st.get_sync_info('other')[1])
+
+ def test_record_sync_info(self):
+ self.st.record_sync_info('replica', 10, 'T-transid')
+ self.assertEqual(
+ ('test', 0, '', 10, 'T-transid'), self.st.get_sync_info('replica'))
+
+ def test_sync_exchange(self):
+ docs_by_gen = [
+ (self.make_document('doc-id', 'replica:1', simple_doc), 10,
+ 'T-sid')]
+ new_gen, trans_id = self.st.sync_exchange(
+ docs_by_gen, 'replica', last_known_generation=0,
+ last_known_trans_id=None, return_doc_cb=self.receive_doc)
+ self.assertGetDoc(self.db, 'doc-id', 'replica:1', simple_doc, False)
+ self.assertTransactionLog(['doc-id'], self.db)
+ last_trans_id = self.getLastTransId(self.db)
+ self.assertEqual(([], 1, last_trans_id),
+ (self.other_changes, new_gen, last_trans_id))
+ self.assertEqual(10, self.st.get_sync_info('replica')[3])
+
+ def test_sync_exchange_deleted(self):
+ doc = self.db.create_doc_from_json('{}')
+ edit_rev = 'replica:1|' + doc.rev
+ docs_by_gen = [
+ (self.make_document(doc.doc_id, edit_rev, None), 10, 'T-sid')]
+ new_gen, trans_id = self.st.sync_exchange(
+ docs_by_gen, 'replica', last_known_generation=0,
+ last_known_trans_id=None, return_doc_cb=self.receive_doc)
+ self.assertGetDocIncludeDeleted(
+ self.db, doc.doc_id, edit_rev, None, False)
+ self.assertTransactionLog([doc.doc_id, doc.doc_id], self.db)
+ last_trans_id = self.getLastTransId(self.db)
+ self.assertEqual(([], 2, last_trans_id),
+ (self.other_changes, new_gen, trans_id))
+ self.assertEqual(10, self.st.get_sync_info('replica')[3])
+
+ def test_sync_exchange_push_many(self):
+ docs_by_gen = [
+ (self.make_document('doc-id', 'replica:1', simple_doc), 10, 'T-1'),
+ (self.make_document('doc-id2', 'replica:1', nested_doc), 11,
+ 'T-2')]
+ new_gen, trans_id = self.st.sync_exchange(
+ docs_by_gen, 'replica', last_known_generation=0,
+ last_known_trans_id=None, return_doc_cb=self.receive_doc)
+ self.assertGetDoc(self.db, 'doc-id', 'replica:1', simple_doc, False)
+ self.assertGetDoc(self.db, 'doc-id2', 'replica:1', nested_doc, False)
+ self.assertTransactionLog(['doc-id', 'doc-id2'], self.db)
+ last_trans_id = self.getLastTransId(self.db)
+ self.assertEqual(([], 2, last_trans_id),
+ (self.other_changes, new_gen, trans_id))
+ self.assertEqual(11, self.st.get_sync_info('replica')[3])
+
+ def test_sync_exchange_refuses_conflicts(self):
+ doc = self.db.create_doc_from_json(simple_doc)
+ self.assertTransactionLog([doc.doc_id], self.db)
+ new_doc = '{"key": "altval"}'
+ docs_by_gen = [
+ (self.make_document(doc.doc_id, 'replica:1', new_doc), 10,
+ 'T-sid')]
+ new_gen, _ = self.st.sync_exchange(
+ docs_by_gen, 'replica', last_known_generation=0,
+ last_known_trans_id=None, return_doc_cb=self.receive_doc)
+ self.assertTransactionLog([doc.doc_id], self.db)
+ self.assertEqual(
+ (doc.doc_id, doc.rev, simple_doc, 1), self.other_changes[0][:-1])
+ self.assertEqual(1, new_gen)
+ if self.whitebox:
+ self.assertEqual(self.db._last_exchange_log['return'],
+ {'last_gen': 1, 'docs': [(doc.doc_id, doc.rev)]})
+
+ def test_sync_exchange_ignores_convergence(self):
+ doc = self.db.create_doc_from_json(simple_doc)
+ self.assertTransactionLog([doc.doc_id], self.db)
+ gen, txid = self.db._get_generation_info()
+ docs_by_gen = [
+ (self.make_document(doc.doc_id, doc.rev, simple_doc), 10, 'T-sid')]
+ new_gen, _ = self.st.sync_exchange(
+ docs_by_gen, 'replica', last_known_generation=gen,
+ last_known_trans_id=txid, return_doc_cb=self.receive_doc)
+ self.assertTransactionLog([doc.doc_id], self.db)
+ self.assertEqual(([], 1), (self.other_changes, new_gen))
+
+ def test_sync_exchange_returns_new_docs(self):
+ doc = self.db.create_doc_from_json(simple_doc)
+ self.assertTransactionLog([doc.doc_id], self.db)
+ new_gen, _ = self.st.sync_exchange(
+ [], 'other-replica', last_known_generation=0,
+ last_known_trans_id=None, return_doc_cb=self.receive_doc)
+ self.assertTransactionLog([doc.doc_id], self.db)
+ self.assertEqual(
+ (doc.doc_id, doc.rev, simple_doc, 1), self.other_changes[0][:-1])
+ self.assertEqual(1, new_gen)
+ if self.whitebox:
+ self.assertEqual(self.db._last_exchange_log['return'],
+ {'last_gen': 1, 'docs': [(doc.doc_id, doc.rev)]})
+
+ def test_sync_exchange_returns_deleted_docs(self):
+ doc = self.db.create_doc_from_json(simple_doc)
+ self.db.delete_doc(doc)
+ self.assertTransactionLog([doc.doc_id, doc.doc_id], self.db)
+ new_gen, _ = self.st.sync_exchange(
+ [], 'other-replica', last_known_generation=0,
+ last_known_trans_id=None, return_doc_cb=self.receive_doc)
+ self.assertTransactionLog([doc.doc_id, doc.doc_id], self.db)
+ self.assertEqual(
+ (doc.doc_id, doc.rev, None, 2), self.other_changes[0][:-1])
+ self.assertEqual(2, new_gen)
+ if self.whitebox:
+ self.assertEqual(self.db._last_exchange_log['return'],
+ {'last_gen': 2, 'docs': [(doc.doc_id, doc.rev)]})
+
+ def test_sync_exchange_returns_many_new_docs(self):
+ doc = self.db.create_doc_from_json(simple_doc)
+ doc2 = self.db.create_doc_from_json(nested_doc)
+ self.assertTransactionLog([doc.doc_id, doc2.doc_id], self.db)
+ new_gen, _ = self.st.sync_exchange(
+ [], 'other-replica', last_known_generation=0,
+ last_known_trans_id=None, return_doc_cb=self.receive_doc)
+ self.assertTransactionLog([doc.doc_id, doc2.doc_id], self.db)
+ self.assertEqual(2, new_gen)
+ self.assertEqual(
+ [(doc.doc_id, doc.rev, simple_doc, 1),
+ (doc2.doc_id, doc2.rev, nested_doc, 2)],
+ [c[:-1] for c in self.other_changes])
+ if self.whitebox:
+ self.assertEqual(
+ self.db._last_exchange_log['return'],
+ {'last_gen': 2, 'docs':
+ [(doc.doc_id, doc.rev), (doc2.doc_id, doc2.rev)]})
+
+ def test_sync_exchange_getting_newer_docs(self):
+ doc = self.db.create_doc_from_json(simple_doc)
+ self.assertTransactionLog([doc.doc_id], self.db)
+ new_doc = '{"key": "altval"}'
+ docs_by_gen = [
+ (self.make_document(doc.doc_id, 'test:1|z:2', new_doc), 10,
+ 'T-sid')]
+ new_gen, _ = self.st.sync_exchange(
+ docs_by_gen, 'other-replica', last_known_generation=0,
+ last_known_trans_id=None, return_doc_cb=self.receive_doc)
+ self.assertTransactionLog([doc.doc_id, doc.doc_id], self.db)
+ self.assertEqual(([], 2), (self.other_changes, new_gen))
+
+ def test_sync_exchange_with_concurrent_updates_of_synced_doc(self):
+ expected = []
+
+ def before_whatschanged_cb(state):
+ if state != 'before whats_changed':
+ return
+ cont = '{"key": "cuncurrent"}'
+ conc_rev = self.db.put_doc(
+ self.make_document(doc.doc_id, 'test:1|z:2', cont))
+ expected.append((doc.doc_id, conc_rev, cont, 3))
+
+ self.set_trace_hook(before_whatschanged_cb)
+ doc = self.db.create_doc_from_json(simple_doc)
+ self.assertTransactionLog([doc.doc_id], self.db)
+ new_doc = '{"key": "altval"}'
+ docs_by_gen = [
+ (self.make_document(doc.doc_id, 'test:1|z:2', new_doc), 10,
+ 'T-sid')]
+ new_gen, _ = self.st.sync_exchange(
+ docs_by_gen, 'other-replica', last_known_generation=0,
+ last_known_trans_id=None, return_doc_cb=self.receive_doc)
+ self.assertEqual(expected, [c[:-1] for c in self.other_changes])
+ self.assertEqual(3, new_gen)
+
+ def test_sync_exchange_with_concurrent_updates(self):
+
+ def after_whatschanged_cb(state):
+ if state != 'after whats_changed':
+ return
+ self.db.create_doc_from_json('{"new": "doc"}')
+
+ self.set_trace_hook(after_whatschanged_cb)
+ doc = self.db.create_doc_from_json(simple_doc)
+ self.assertTransactionLog([doc.doc_id], self.db)
+ new_doc = '{"key": "altval"}'
+ docs_by_gen = [
+ (self.make_document(doc.doc_id, 'test:1|z:2', new_doc), 10,
+ 'T-sid')]
+ new_gen, _ = self.st.sync_exchange(
+ docs_by_gen, 'other-replica', last_known_generation=0,
+ last_known_trans_id=None, return_doc_cb=self.receive_doc)
+ self.assertEqual(([], 2), (self.other_changes, new_gen))
+
+ def test_sync_exchange_converged_handling(self):
+ doc = self.db.create_doc_from_json(simple_doc)
+ docs_by_gen = [
+ (self.make_document('new', 'other:1', '{}'), 4, 'T-foo'),
+ (self.make_document(doc.doc_id, doc.rev, doc.get_json()), 5,
+ 'T-bar')]
+ new_gen, _ = self.st.sync_exchange(
+ docs_by_gen, 'other-replica', last_known_generation=0,
+ last_known_trans_id=None, return_doc_cb=self.receive_doc)
+ self.assertEqual(([], 2), (self.other_changes, new_gen))
+
+ def test_sync_exchange_detect_incomplete_exchange(self):
+ def before_get_docs_explode(state):
+ if state != 'before get_docs':
+ return
+ raise errors.U1DBError("fail")
+ self.set_trace_hook(before_get_docs_explode)
+ # suppress traceback printing in the wsgiref server
+ self.patch(simple_server.ServerHandler,
+ 'log_exception', lambda h, exc_info: None)
+ doc = self.db.create_doc_from_json(simple_doc)
+ self.assertTransactionLog([doc.doc_id], self.db)
+ self.assertRaises(
+ (errors.U1DBError, errors.BrokenSyncStream),
+ self.st.sync_exchange, [], 'other-replica',
+ last_known_generation=0, last_known_trans_id=None,
+ return_doc_cb=self.receive_doc)
+
+ def test_sync_exchange_doc_ids(self):
+ sync_exchange_doc_ids = getattr(self.st, 'sync_exchange_doc_ids', None)
+ if sync_exchange_doc_ids is None:
+ self.skipTest("sync_exchange_doc_ids not implemented")
+ db2 = self.create_database('test2')
+ doc = db2.create_doc_from_json(simple_doc)
+ new_gen, trans_id = sync_exchange_doc_ids(
+ db2, [(doc.doc_id, 10, 'T-sid')], 0, None,
+ return_doc_cb=self.receive_doc)
+ self.assertGetDoc(self.db, doc.doc_id, doc.rev, simple_doc, False)
+ self.assertTransactionLog([doc.doc_id], self.db)
+ last_trans_id = self.getLastTransId(self.db)
+ self.assertEqual(([], 1, last_trans_id),
+ (self.other_changes, new_gen, trans_id))
+ self.assertEqual(10, self.st.get_sync_info(db2._replica_uid)[3])
+
+ def test__set_trace_hook(self):
+ called = []
+
+ def cb(state):
+ called.append(state)
+
+ self.set_trace_hook(cb)
+ self.st.sync_exchange([], 'replica', 0, None, self.receive_doc)
+ self.st.record_sync_info('replica', 0, 'T-sid')
+ self.assertEqual(['before whats_changed',
+ 'after whats_changed',
+ 'before get_docs',
+ 'record_sync_info',
+ ],
+ called)
+
+ def test__set_trace_hook_shallow(self):
+ if (self.st._set_trace_hook_shallow == self.st._set_trace_hook
+ or self.st._set_trace_hook_shallow.im_func ==
+ SyncTarget._set_trace_hook_shallow.im_func):
+ # shallow same as full
+ expected = ['before whats_changed',
+ 'after whats_changed',
+ 'before get_docs',
+ 'record_sync_info',
+ ]
+ else:
+ expected = ['sync_exchange', 'record_sync_info']
+
+ called = []
+
+ def cb(state):
+ called.append(state)
+
+ self.set_trace_hook(cb, shallow=True)
+ self.st.sync_exchange([], 'replica', 0, None, self.receive_doc)
+ self.st.record_sync_info('replica', 0, 'T-sid')
+ self.assertEqual(expected, called)
+
+
+def sync_via_synchronizer(test, db_source, db_target, trace_hook=None,
+ trace_hook_shallow=None):
+ target = db_target.get_sync_target()
+ trace_hook = trace_hook or trace_hook_shallow
+ if trace_hook:
+ target._set_trace_hook(trace_hook)
+ return sync.Synchronizer(db_source, target).sync()
+
+
+sync_scenarios = []
+for name, scenario in tests.LOCAL_DATABASES_SCENARIOS:
+ scenario = dict(scenario)
+ scenario['do_sync'] = sync_via_synchronizer
+ sync_scenarios.append((name, scenario))
+ scenario = dict(scenario)
+
+
+def make_database_for_http_test(test, replica_uid):
+ if test.server is None:
+ test.startServer()
+ db = test.request_state._create_database(replica_uid)
+ try:
+ http_at = test._http_at
+ except AttributeError:
+ http_at = test._http_at = {}
+ http_at[db] = replica_uid
+ return db
+
+
+def copy_database_for_http_test(test, db):
+ # DO NOT COPY OR REUSE THIS CODE OUTSIDE TESTS: COPYING U1DB DATABASES IS
+ # THE WRONG THING TO DO, THE ONLY REASON WE DO SO HERE IS TO TEST THAT WE
+ # CORRECTLY DETECT IT HAPPENING SO THAT WE CAN RAISE ERRORS RATHER THAN
+ # CORRUPT USER DATA. USE SYNC INSTEAD, OR WE WILL SEND NINJA TO YOUR HOUSE.
+ if test.server is None:
+ test.startServer()
+ new_db = test.request_state._copy_database(db)
+ try:
+ http_at = test._http_at
+ except AttributeError:
+ http_at = test._http_at = {}
+ path = db._replica_uid
+ while path in http_at.values():
+ path += 'copy'
+ http_at[new_db] = path
+ return new_db
+
+
+def sync_via_synchronizer_and_http(test, db_source, db_target,
+ trace_hook=None, trace_hook_shallow=None):
+ if trace_hook:
+ test.skipTest("full trace hook unsupported over http")
+ path = test._http_at[db_target]
+ target = http_target.HTTPSyncTarget.connect(test.getURL(path))
+ if trace_hook_shallow:
+ target._set_trace_hook_shallow(trace_hook_shallow)
+ return sync.Synchronizer(db_source, target).sync()
+
+
+sync_scenarios.append(('pyhttp', {
+ 'make_database_for_test': make_database_for_http_test,
+ 'copy_database_for_test': copy_database_for_http_test,
+ 'make_document_for_test': tests.make_document_for_test,
+ 'make_app_with_state': make_http_app,
+ 'do_sync': sync_via_synchronizer_and_http
+ }))
+
+
+class DatabaseSyncTests(tests.DatabaseBaseTests,
+ tests.TestCaseWithServer):
+
+ scenarios = sync_scenarios
+ do_sync = None # set by scenarios
+
+ def create_database(self, replica_uid, sync_role=None):
+ if replica_uid == 'test' and sync_role is None:
+ # created up the chain by base class but unused
+ return None
+ db = self.create_database_for_role(replica_uid, sync_role)
+ if sync_role:
+ self._use_tracking[db] = (replica_uid, sync_role)
+ return db
+
+ def create_database_for_role(self, replica_uid, sync_role):
+ # hook point for reuse
+ return super(DatabaseSyncTests, self).create_database(replica_uid)
+
+ def copy_database(self, db, sync_role=None):
+ # DO NOT COPY OR REUSE THIS CODE OUTSIDE TESTS: COPYING U1DB DATABASES
+ # IS THE WRONG THING TO DO, THE ONLY REASON WE DO SO HERE IS TO TEST
+ # THAT WE CORRECTLY DETECT IT HAPPENING SO THAT WE CAN RAISE ERRORS
+ # RATHER THAN CORRUPT USER DATA. USE SYNC INSTEAD, OR WE WILL SEND
+ # NINJA TO YOUR HOUSE.
+ db_copy = super(DatabaseSyncTests, self).copy_database(db)
+ name, orig_sync_role = self._use_tracking[db]
+ self._use_tracking[db_copy] = (name + '(copy)', sync_role
+ or orig_sync_role)
+ return db_copy
+
+ def sync(self, db_from, db_to, trace_hook=None,
+ trace_hook_shallow=None):
+ from_name, from_sync_role = self._use_tracking[db_from]
+ to_name, to_sync_role = self._use_tracking[db_to]
+ if from_sync_role not in ('source', 'both'):
+ raise Exception("%s marked for %s use but used as source" %
+ (from_name, from_sync_role))
+ if to_sync_role not in ('target', 'both'):
+ raise Exception("%s marked for %s use but used as target" %
+ (to_name, to_sync_role))
+ return self.do_sync(self, db_from, db_to, trace_hook,
+ trace_hook_shallow)
+
+ def setUp(self):
+ self._use_tracking = {}
+ super(DatabaseSyncTests, self).setUp()
+
+ def assertLastExchangeLog(self, db, expected):
+ log = getattr(db, '_last_exchange_log', None)
+ if log is None:
+ return
+ self.assertEqual(expected, log)
+
+ def test_sync_tracks_db_generation_of_other(self):
+ self.db1 = self.create_database('test1', 'source')
+ self.db2 = self.create_database('test2', 'target')
+ self.assertEqual(0, self.sync(self.db1, self.db2))
+ self.assertEqual(
+ (0, ''), self.db1._get_replica_gen_and_trans_id('test2'))
+ self.assertEqual(
+ (0, ''), self.db2._get_replica_gen_and_trans_id('test1'))
+ self.assertLastExchangeLog(self.db2,
+ {'receive': {'docs': [], 'last_known_gen': 0},
+ 'return': {'docs': [], 'last_gen': 0}})
+
+ def test_sync_autoresolves(self):
+ self.db1 = self.create_database('test1', 'source')
+ self.db2 = self.create_database('test2', 'target')
+ doc1 = self.db1.create_doc_from_json(simple_doc, doc_id='doc')
+ rev1 = doc1.rev
+ doc2 = self.db2.create_doc_from_json(simple_doc, doc_id='doc')
+ rev2 = doc2.rev
+ self.sync(self.db1, self.db2)
+ doc = self.db1.get_doc('doc')
+ self.assertFalse(doc.has_conflicts)
+ self.assertEqual(doc.rev, self.db2.get_doc('doc').rev)
+ v = vectorclock.VectorClockRev(doc.rev)
+ self.assertTrue(v.is_newer(vectorclock.VectorClockRev(rev1)))
+ self.assertTrue(v.is_newer(vectorclock.VectorClockRev(rev2)))
+
+ def test_sync_autoresolves_moar(self):
+ # here we test that when a database that has a conflicted document is
+ # the source of a sync, and the target database has a revision of the
+ # conflicted document that is newer than the source database's, and
+ # that target's database's document's content is the same as the
+ # source's document's conflict's, the source's document's conflict gets
+ # autoresolved, and the source's document's revision bumped.
+ #
+ # idea is as follows:
+ # A B
+ # a1 -
+ # `------->
+ # a1 a1
+ # v v
+ # a2 a1b1
+ # `------->
+ # a1b1+a2 a1b1
+ # v
+ # a1b1+a2 a1b2 (a1b2 has same content as a2)
+ # `------->
+ # a3b2 a1b2 (autoresolved)
+ # `------->
+ # a3b2 a3b2
+ self.db1 = self.create_database('test1', 'source')
+ self.db2 = self.create_database('test2', 'target')
+ self.db1.create_doc_from_json(simple_doc, doc_id='doc')
+ self.sync(self.db1, self.db2)
+ for db, content in [(self.db1, '{}'), (self.db2, '{"hi": 42}')]:
+ doc = db.get_doc('doc')
+ doc.set_json(content)
+ db.put_doc(doc)
+ self.sync(self.db1, self.db2)
+ # db1 and db2 now both have a doc of {hi:42}, but db1 has a conflict
+ doc = self.db1.get_doc('doc')
+ rev1 = doc.rev
+ self.assertTrue(doc.has_conflicts)
+ # set db2 to have a doc of {} (same as db1 before the conflict)
+ doc = self.db2.get_doc('doc')
+ doc.set_json('{}')
+ self.db2.put_doc(doc)
+ rev2 = doc.rev
+ # sync it across
+ self.sync(self.db1, self.db2)
+ # tadaa!
+ doc = self.db1.get_doc('doc')
+ self.assertFalse(doc.has_conflicts)
+ vec1 = vectorclock.VectorClockRev(rev1)
+ vec2 = vectorclock.VectorClockRev(rev2)
+ vec3 = vectorclock.VectorClockRev(doc.rev)
+ self.assertTrue(vec3.is_newer(vec1))
+ self.assertTrue(vec3.is_newer(vec2))
+ # because the conflict is on the source, sync it another time
+ self.sync(self.db1, self.db2)
+ # make sure db2 now has the exact same thing
+ self.assertEqual(self.db1.get_doc('doc'), self.db2.get_doc('doc'))
+
+ def test_sync_autoresolves_moar_backwards(self):
+ # here we test that when a database that has a conflicted document is
+ # the target of a sync, and the source database has a revision of the
+ # conflicted document that is newer than the target database's, and
+ # that source's database's document's content is the same as the
+ # target's document's conflict's, the target's document's conflict gets
+ # autoresolved, and the document's revision bumped.
+ #
+ # idea is as follows:
+ # A B
+ # a1 -
+ # `------->
+ # a1 a1
+ # v v
+ # a2 a1b1
+ # `------->
+ # a1b1+a2 a1b1
+ # v
+ # a1b1+a2 a1b2 (a1b2 has same content as a2)
+ # <-------'
+ # a3b2 a3b2 (autoresolved and propagated)
+ self.db1 = self.create_database('test1', 'both')
+ self.db2 = self.create_database('test2', 'both')
+ self.db1.create_doc_from_json(simple_doc, doc_id='doc')
+ self.sync(self.db1, self.db2)
+ for db, content in [(self.db1, '{}'), (self.db2, '{"hi": 42}')]:
+ doc = db.get_doc('doc')
+ doc.set_json(content)
+ db.put_doc(doc)
+ self.sync(self.db1, self.db2)
+ # db1 and db2 now both have a doc of {hi:42}, but db1 has a conflict
+ doc = self.db1.get_doc('doc')
+ rev1 = doc.rev
+ self.assertTrue(doc.has_conflicts)
+ revc = self.db1.get_doc_conflicts('doc')[-1].rev
+ # set db2 to have a doc of {} (same as db1 before the conflict)
+ doc = self.db2.get_doc('doc')
+ doc.set_json('{}')
+ self.db2.put_doc(doc)
+ rev2 = doc.rev
+ # sync it across
+ self.sync(self.db2, self.db1)
+ # tadaa!
+ doc = self.db1.get_doc('doc')
+ self.assertFalse(doc.has_conflicts)
+ vec1 = vectorclock.VectorClockRev(rev1)
+ vec2 = vectorclock.VectorClockRev(rev2)
+ vec3 = vectorclock.VectorClockRev(doc.rev)
+ vecc = vectorclock.VectorClockRev(revc)
+ self.assertTrue(vec3.is_newer(vec1))
+ self.assertTrue(vec3.is_newer(vec2))
+ self.assertTrue(vec3.is_newer(vecc))
+ # make sure db2 now has the exact same thing
+ self.assertEqual(self.db1.get_doc('doc'), self.db2.get_doc('doc'))
+
+ def test_sync_autoresolves_moar_backwards_three(self):
+ # same as autoresolves_moar_backwards, but with three databases (note
+ # all the syncs go in the same direction -- this is a more natural
+ # scenario):
+ #
+ # A B C
+ # a1 - -
+ # `------->
+ # a1 a1 -
+ # `------->
+ # a1 a1 a1
+ # v v
+ # a2 a1b1 a1
+ # `------------------->
+ # a2 a1b1 a2
+ # `------->
+ # a2+a1b1 a2
+ # v
+ # a2 a2+a1b1 a2c1 (same as a1b1)
+ # `------------------->
+ # a2c1 a2+a1b1 a2c1
+ # `------->
+ # a2b2c1 a2b2c1 a2c1
+ self.db1 = self.create_database('test1', 'source')
+ self.db2 = self.create_database('test2', 'both')
+ self.db3 = self.create_database('test3', 'target')
+ self.db1.create_doc_from_json(simple_doc, doc_id='doc')
+ self.sync(self.db1, self.db2)
+ self.sync(self.db2, self.db3)
+ for db, content in [(self.db2, '{"hi": 42}'),
+ (self.db1, '{}'),
+ ]:
+ doc = db.get_doc('doc')
+ doc.set_json(content)
+ db.put_doc(doc)
+ self.sync(self.db1, self.db3)
+ self.sync(self.db2, self.db3)
+ # db2 and db3 now both have a doc of {}, but db2 has a
+ # conflict
+ doc = self.db2.get_doc('doc')
+ self.assertTrue(doc.has_conflicts)
+ revc = self.db2.get_doc_conflicts('doc')[-1].rev
+ self.assertEqual('{}', doc.get_json())
+ self.assertEqual(self.db3.get_doc('doc').get_json(), doc.get_json())
+ self.assertEqual(self.db3.get_doc('doc').rev, doc.rev)
+ # set db3 to have a doc of {hi:42} (same as db2 before the conflict)
+ doc = self.db3.get_doc('doc')
+ doc.set_json('{"hi": 42}')
+ self.db3.put_doc(doc)
+ rev3 = doc.rev
+ # sync it across to db1
+ self.sync(self.db1, self.db3)
+ # db1 now has hi:42, with a rev that is newer than db2's doc
+ doc = self.db1.get_doc('doc')
+ rev1 = doc.rev
+ self.assertFalse(doc.has_conflicts)
+ self.assertEqual('{"hi": 42}', doc.get_json())
+ VCR = vectorclock.VectorClockRev
+ self.assertTrue(VCR(rev1).is_newer(VCR(self.db2.get_doc('doc').rev)))
+ # so sync it to db2
+ self.sync(self.db1, self.db2)
+ # tadaa!
+ doc = self.db2.get_doc('doc')
+ self.assertFalse(doc.has_conflicts)
+ # db2's revision of the document is strictly newer than db1's before
+ # the sync, and db3's before that sync way back when
+ self.assertTrue(VCR(doc.rev).is_newer(VCR(rev1)))
+ self.assertTrue(VCR(doc.rev).is_newer(VCR(rev3)))
+ self.assertTrue(VCR(doc.rev).is_newer(VCR(revc)))
+ # make sure both dbs now have the exact same thing
+ self.assertEqual(self.db1.get_doc('doc'), self.db2.get_doc('doc'))
+
+ def test_sync_puts_changes(self):
+ self.db1 = self.create_database('test1', 'source')
+ self.db2 = self.create_database('test2', 'target')
+ doc = self.db1.create_doc_from_json(simple_doc)
+ self.assertEqual(1, self.sync(self.db1, self.db2))
+ self.assertGetDoc(self.db2, doc.doc_id, doc.rev, simple_doc, False)
+ self.assertEqual(1, self.db1._get_replica_gen_and_trans_id('test2')[0])
+ self.assertEqual(1, self.db2._get_replica_gen_and_trans_id('test1')[0])
+ self.assertLastExchangeLog(self.db2,
+ {'receive': {'docs': [(doc.doc_id, doc.rev)],
+ 'source_uid': 'test1',
+ 'source_gen': 1, 'last_known_gen': 0},
+ 'return': {'docs': [], 'last_gen': 1}})
+
+ def test_sync_pulls_changes(self):
+ self.db1 = self.create_database('test1', 'source')
+ self.db2 = self.create_database('test2', 'target')
+ doc = self.db2.create_doc_from_json(simple_doc)
+ self.db1.create_index('test-idx', 'key')
+ self.assertEqual(0, self.sync(self.db1, self.db2))
+ self.assertGetDoc(self.db1, doc.doc_id, doc.rev, simple_doc, False)
+ self.assertEqual(1, self.db1._get_replica_gen_and_trans_id('test2')[0])
+ self.assertEqual(1, self.db2._get_replica_gen_and_trans_id('test1')[0])
+ self.assertLastExchangeLog(self.db2,
+ {'receive': {'docs': [], 'last_known_gen': 0},
+ 'return': {'docs': [(doc.doc_id, doc.rev)],
+ 'last_gen': 1}})
+ self.assertEqual([doc], self.db1.get_from_index('test-idx', 'value'))
+
+ def test_sync_pulling_doesnt_update_other_if_changed(self):
+ self.db1 = self.create_database('test1', 'source')
+ self.db2 = self.create_database('test2', 'target')
+ doc = self.db2.create_doc_from_json(simple_doc)
+ # After the local side has sent its list of docs, before we start
+ # receiving the "targets" response, we update the local database with a
+ # new record.
+ # When we finish synchronizing, we can notice that something locally
+ # was updated, and we cannot tell c2 our new updated generation
+
+ def before_get_docs(state):
+ if state != 'before get_docs':
+ return
+ self.db1.create_doc_from_json(simple_doc)
+
+ self.assertEqual(0, self.sync(self.db1, self.db2,
+ trace_hook=before_get_docs))
+ self.assertLastExchangeLog(self.db2,
+ {'receive': {'docs': [], 'last_known_gen': 0},
+ 'return': {'docs': [(doc.doc_id, doc.rev)],
+ 'last_gen': 1}})
+ self.assertEqual(1, self.db1._get_replica_gen_and_trans_id('test2')[0])
+ # c2 should not have gotten a '_record_sync_info' call, because the
+ # local database had been updated more than just by the messages
+ # returned from c2.
+ self.assertEqual(
+ (0, ''), self.db2._get_replica_gen_and_trans_id('test1'))
+
+ def test_sync_doesnt_update_other_if_nothing_pulled(self):
+ self.db1 = self.create_database('test1', 'source')
+ self.db2 = self.create_database('test2', 'target')
+ self.db1.create_doc_from_json(simple_doc)
+
+ def no_record_sync_info(state):
+ if state != 'record_sync_info':
+ return
+ self.fail('SyncTarget.record_sync_info was called')
+ self.assertEqual(1, self.sync(self.db1, self.db2,
+ trace_hook_shallow=no_record_sync_info))
+ self.assertEqual(
+ 1,
+ self.db2._get_replica_gen_and_trans_id(self.db1._replica_uid)[0])
+
+ def test_sync_ignores_convergence(self):
+ self.db1 = self.create_database('test1', 'source')
+ self.db2 = self.create_database('test2', 'both')
+ doc = self.db1.create_doc_from_json(simple_doc)
+ self.db3 = self.create_database('test3', 'target')
+ self.assertEqual(1, self.sync(self.db1, self.db3))
+ self.assertEqual(0, self.sync(self.db2, self.db3))
+ self.assertEqual(1, self.sync(self.db1, self.db2))
+ self.assertLastExchangeLog(self.db2,
+ {'receive': {'docs': [(doc.doc_id, doc.rev)],
+ 'source_uid': 'test1',
+ 'source_gen': 1, 'last_known_gen': 0},
+ 'return': {'docs': [], 'last_gen': 1}})
+
+ def test_sync_ignores_superseded(self):
+ self.db1 = self.create_database('test1', 'both')
+ self.db2 = self.create_database('test2', 'both')
+ doc = self.db1.create_doc_from_json(simple_doc)
+ doc_rev1 = doc.rev
+ self.db3 = self.create_database('test3', 'target')
+ self.sync(self.db1, self.db3)
+ self.sync(self.db2, self.db3)
+ new_content = '{"key": "altval"}'
+ doc.set_json(new_content)
+ self.db1.put_doc(doc)
+ doc_rev2 = doc.rev
+ self.sync(self.db2, self.db1)
+ self.assertLastExchangeLog(self.db1,
+ {'receive': {'docs': [(doc.doc_id, doc_rev1)],
+ 'source_uid': 'test2',
+ 'source_gen': 1, 'last_known_gen': 0},
+ 'return': {'docs': [(doc.doc_id, doc_rev2)],
+ 'last_gen': 2}})
+ self.assertGetDoc(self.db1, doc.doc_id, doc_rev2, new_content, False)
+
+ def test_sync_sees_remote_conflicted(self):
+ self.db1 = self.create_database('test1', 'source')
+ self.db2 = self.create_database('test2', 'target')
+ doc1 = self.db1.create_doc_from_json(simple_doc)
+ doc_id = doc1.doc_id
+ doc1_rev = doc1.rev
+ self.db1.create_index('test-idx', 'key')
+ new_doc = '{"key": "altval"}'
+ doc2 = self.db2.create_doc_from_json(new_doc, doc_id=doc_id)
+ doc2_rev = doc2.rev
+ self.assertTransactionLog([doc1.doc_id], self.db1)
+ self.sync(self.db1, self.db2)
+ self.assertLastExchangeLog(self.db2,
+ {'receive': {'docs': [(doc_id, doc1_rev)],
+ 'source_uid': 'test1',
+ 'source_gen': 1, 'last_known_gen': 0},
+ 'return': {'docs': [(doc_id, doc2_rev)],
+ 'last_gen': 1}})
+ self.assertTransactionLog([doc_id, doc_id], self.db1)
+ self.assertGetDoc(self.db1, doc_id, doc2_rev, new_doc, True)
+ self.assertGetDoc(self.db2, doc_id, doc2_rev, new_doc, False)
+ from_idx = self.db1.get_from_index('test-idx', 'altval')[0]
+ self.assertEqual(doc2.doc_id, from_idx.doc_id)
+ self.assertEqual(doc2.rev, from_idx.rev)
+ self.assertTrue(from_idx.has_conflicts)
+ self.assertEqual([], self.db1.get_from_index('test-idx', 'value'))
+
+ def test_sync_sees_remote_delete_conflicted(self):
+ self.db1 = self.create_database('test1', 'source')
+ self.db2 = self.create_database('test2', 'target')
+ doc1 = self.db1.create_doc_from_json(simple_doc)
+ doc_id = doc1.doc_id
+ self.db1.create_index('test-idx', 'key')
+ self.sync(self.db1, self.db2)
+ doc2 = self.make_document(doc1.doc_id, doc1.rev, doc1.get_json())
+ new_doc = '{"key": "altval"}'
+ doc1.set_json(new_doc)
+ self.db1.put_doc(doc1)
+ self.db2.delete_doc(doc2)
+ self.assertTransactionLog([doc_id, doc_id], self.db1)
+ self.sync(self.db1, self.db2)
+ self.assertLastExchangeLog(self.db2,
+ {'receive': {'docs': [(doc_id, doc1.rev)],
+ 'source_uid': 'test1',
+ 'source_gen': 2, 'last_known_gen': 1},
+ 'return': {'docs': [(doc_id, doc2.rev)],
+ 'last_gen': 2}})
+ self.assertTransactionLog([doc_id, doc_id, doc_id], self.db1)
+ self.assertGetDocIncludeDeleted(self.db1, doc_id, doc2.rev, None, True)
+ self.assertGetDocIncludeDeleted(
+ self.db2, doc_id, doc2.rev, None, False)
+ self.assertEqual([], self.db1.get_from_index('test-idx', 'value'))
+
+ def test_sync_local_race_conflicted(self):
+ self.db1 = self.create_database('test1', 'source')
+ self.db2 = self.create_database('test2', 'target')
+ doc = self.db1.create_doc_from_json(simple_doc)
+ doc_id = doc.doc_id
+ doc1_rev = doc.rev
+ self.db1.create_index('test-idx', 'key')
+ self.sync(self.db1, self.db2)
+ content1 = '{"key": "localval"}'
+ content2 = '{"key": "altval"}'
+ doc.set_json(content2)
+ self.db2.put_doc(doc)
+ doc2_rev2 = doc.rev
+ triggered = []
+
+ def after_whatschanged(state):
+ if state != 'after whats_changed':
+ return
+ triggered.append(True)
+ doc = self.make_document(doc_id, doc1_rev, content1)
+ self.db1.put_doc(doc)
+
+ self.sync(self.db1, self.db2, trace_hook=after_whatschanged)
+ self.assertEqual([True], triggered)
+ self.assertGetDoc(self.db1, doc_id, doc2_rev2, content2, True)
+ from_idx = self.db1.get_from_index('test-idx', 'altval')[0]
+ self.assertEqual(doc.doc_id, from_idx.doc_id)
+ self.assertEqual(doc.rev, from_idx.rev)
+ self.assertTrue(from_idx.has_conflicts)
+ self.assertEqual([], self.db1.get_from_index('test-idx', 'value'))
+ self.assertEqual([], self.db1.get_from_index('test-idx', 'localval'))
+
+ def test_sync_propagates_deletes(self):
+ self.db1 = self.create_database('test1', 'source')
+ self.db2 = self.create_database('test2', 'both')
+ doc1 = self.db1.create_doc_from_json(simple_doc)
+ doc_id = doc1.doc_id
+ self.db1.create_index('test-idx', 'key')
+ self.sync(self.db1, self.db2)
+ self.db2.create_index('test-idx', 'key')
+ self.db3 = self.create_database('test3', 'target')
+ self.sync(self.db1, self.db3)
+ self.db1.delete_doc(doc1)
+ deleted_rev = doc1.rev
+ self.sync(self.db1, self.db2)
+ self.assertLastExchangeLog(self.db2,
+ {'receive': {'docs': [(doc_id, deleted_rev)],
+ 'source_uid': 'test1',
+ 'source_gen': 2, 'last_known_gen': 1},
+ 'return': {'docs': [], 'last_gen': 2}})
+ self.assertGetDocIncludeDeleted(
+ self.db1, doc_id, deleted_rev, None, False)
+ self.assertGetDocIncludeDeleted(
+ self.db2, doc_id, deleted_rev, None, False)
+ self.assertEqual([], self.db1.get_from_index('test-idx', 'value'))
+ self.assertEqual([], self.db2.get_from_index('test-idx', 'value'))
+ self.sync(self.db2, self.db3)
+ self.assertLastExchangeLog(self.db3,
+ {'receive': {'docs': [(doc_id, deleted_rev)],
+ 'source_uid': 'test2',
+ 'source_gen': 2, 'last_known_gen': 0},
+ 'return': {'docs': [], 'last_gen': 2}})
+ self.assertGetDocIncludeDeleted(
+ self.db3, doc_id, deleted_rev, None, False)
+
+ def test_sync_propagates_resolution(self):
+ self.db1 = self.create_database('test1', 'both')
+ self.db2 = self.create_database('test2', 'both')
+ doc1 = self.db1.create_doc_from_json('{"a": 1}', doc_id='the-doc')
+ db3 = self.create_database('test3', 'both')
+ self.sync(self.db2, self.db1)
+ self.assertEqual(
+ self.db1._get_generation_info(),
+ self.db2._get_replica_gen_and_trans_id(self.db1._replica_uid))
+ self.assertEqual(
+ self.db2._get_generation_info(),
+ self.db1._get_replica_gen_and_trans_id(self.db2._replica_uid))
+ self.sync(db3, self.db1)
+ # update on 2
+ doc2 = self.make_document('the-doc', doc1.rev, '{"a": 2}')
+ self.db2.put_doc(doc2)
+ self.sync(self.db2, db3)
+ self.assertEqual(db3.get_doc('the-doc').rev, doc2.rev)
+ # update on 1
+ doc1.set_json('{"a": 3}')
+ self.db1.put_doc(doc1)
+ # conflicts
+ self.sync(self.db2, self.db1)
+ self.sync(db3, self.db1)
+ self.assertTrue(self.db2.get_doc('the-doc').has_conflicts)
+ self.assertTrue(db3.get_doc('the-doc').has_conflicts)
+ # resolve
+ conflicts = self.db2.get_doc_conflicts('the-doc')
+ doc4 = self.make_document('the-doc', None, '{"a": 4}')
+ revs = [doc.rev for doc in conflicts]
+ self.db2.resolve_doc(doc4, revs)
+ doc2 = self.db2.get_doc('the-doc')
+ self.assertEqual(doc4.get_json(), doc2.get_json())
+ self.assertFalse(doc2.has_conflicts)
+ self.sync(self.db2, db3)
+ doc3 = db3.get_doc('the-doc')
+ self.assertEqual(doc4.get_json(), doc3.get_json())
+ self.assertFalse(doc3.has_conflicts)
+
+ def test_sync_supersedes_conflicts(self):
+ self.db1 = self.create_database('test1', 'both')
+ self.db2 = self.create_database('test2', 'target')
+ db3 = self.create_database('test3', 'both')
+ doc1 = self.db1.create_doc_from_json('{"a": 1}', doc_id='the-doc')
+ self.db2.create_doc_from_json('{"b": 1}', doc_id='the-doc')
+ db3.create_doc_from_json('{"c": 1}', doc_id='the-doc')
+ self.sync(db3, self.db1)
+ self.assertEqual(
+ self.db1._get_generation_info(),
+ db3._get_replica_gen_and_trans_id(self.db1._replica_uid))
+ self.assertEqual(
+ db3._get_generation_info(),
+ self.db1._get_replica_gen_and_trans_id(db3._replica_uid))
+ self.sync(db3, self.db2)
+ self.assertEqual(
+ self.db2._get_generation_info(),
+ db3._get_replica_gen_and_trans_id(self.db2._replica_uid))
+ self.assertEqual(
+ db3._get_generation_info(),
+ self.db2._get_replica_gen_and_trans_id(db3._replica_uid))
+ self.assertEqual(3, len(db3.get_doc_conflicts('the-doc')))
+ doc1.set_json('{"a": 2}')
+ self.db1.put_doc(doc1)
+ self.sync(db3, self.db1)
+ # original doc1 should have been removed from conflicts
+ self.assertEqual(3, len(db3.get_doc_conflicts('the-doc')))
+
+ def test_sync_stops_after_get_sync_info(self):
+ self.db1 = self.create_database('test1', 'source')
+ self.db2 = self.create_database('test2', 'target')
+ self.db1.create_doc_from_json(tests.simple_doc)
+ self.sync(self.db1, self.db2)
+
+ def put_hook(state):
+ self.fail("Tracehook triggered for %s" % (state,))
+
+ self.sync(self.db1, self.db2, trace_hook_shallow=put_hook)
+
+ def test_sync_detects_rollback_in_source(self):
+ self.db1 = self.create_database('test1', 'source')
+ self.db2 = self.create_database('test2', 'target')
+ self.db1.create_doc_from_json(tests.simple_doc, doc_id='doc1')
+ self.sync(self.db1, self.db2)
+ db1_copy = self.copy_database(self.db1)
+ self.db1.create_doc_from_json(tests.simple_doc, doc_id='doc2')
+ self.sync(self.db1, self.db2)
+ self.assertRaises(
+ errors.InvalidGeneration, self.sync, db1_copy, self.db2)
+
+ def test_sync_detects_rollback_in_target(self):
+ self.db1 = self.create_database('test1', 'source')
+ self.db2 = self.create_database('test2', 'target')
+ self.db1.create_doc_from_json(tests.simple_doc, doc_id="divergent")
+ self.sync(self.db1, self.db2)
+ db2_copy = self.copy_database(self.db2)
+ self.db2.create_doc_from_json(tests.simple_doc, doc_id='doc2')
+ self.sync(self.db1, self.db2)
+ self.assertRaises(
+ errors.InvalidGeneration, self.sync, self.db1, db2_copy)
+
+ def test_sync_detects_diverged_source(self):
+ self.db1 = self.create_database('test1', 'source')
+ self.db2 = self.create_database('test2', 'target')
+ db3 = self.copy_database(self.db1)
+ self.db1.create_doc_from_json(tests.simple_doc, doc_id="divergent")
+ db3.create_doc_from_json(tests.simple_doc, doc_id="divergent")
+ self.sync(self.db1, self.db2)
+ self.assertRaises(
+ errors.InvalidTransactionId, self.sync, db3, self.db2)
+
+ def test_sync_detects_diverged_target(self):
+ self.db1 = self.create_database('test1', 'source')
+ self.db2 = self.create_database('test2', 'target')
+ db3 = self.copy_database(self.db2)
+ db3.create_doc_from_json(tests.nested_doc, doc_id="divergent")
+ self.db1.create_doc_from_json(tests.simple_doc, doc_id="divergent")
+ self.sync(self.db1, self.db2)
+ self.assertRaises(
+ errors.InvalidTransactionId, self.sync, self.db1, db3)
+
+ def test_sync_detects_rollback_and_divergence_in_source(self):
+ self.db1 = self.create_database('test1', 'source')
+ self.db2 = self.create_database('test2', 'target')
+ self.db1.create_doc_from_json(tests.simple_doc, doc_id='doc1')
+ self.sync(self.db1, self.db2)
+ db1_copy = self.copy_database(self.db1)
+ self.db1.create_doc_from_json(tests.simple_doc, doc_id='doc2')
+ self.db1.create_doc_from_json(tests.simple_doc, doc_id='doc3')
+ self.sync(self.db1, self.db2)
+ db1_copy.create_doc_from_json(tests.simple_doc, doc_id='doc2')
+ db1_copy.create_doc_from_json(tests.simple_doc, doc_id='doc3')
+ self.assertRaises(
+ errors.InvalidTransactionId, self.sync, db1_copy, self.db2)
+
+ def test_sync_detects_rollback_and_divergence_in_target(self):
+ self.db1 = self.create_database('test1', 'source')
+ self.db2 = self.create_database('test2', 'target')
+ self.db1.create_doc_from_json(tests.simple_doc, doc_id="divergent")
+ self.sync(self.db1, self.db2)
+ db2_copy = self.copy_database(self.db2)
+ self.db2.create_doc_from_json(tests.simple_doc, doc_id='doc2')
+ self.db2.create_doc_from_json(tests.simple_doc, doc_id='doc3')
+ self.sync(self.db1, self.db2)
+ db2_copy.create_doc_from_json(tests.simple_doc, doc_id='doc2')
+ db2_copy.create_doc_from_json(tests.simple_doc, doc_id='doc3')
+ self.assertRaises(
+ errors.InvalidTransactionId, self.sync, self.db1, db2_copy)
+
+
+class TestDbSync(tests.TestCaseWithServer):
+ """Test db.sync remote sync shortcut"""
+
+ scenarios = [
+ ('py-http', {
+ 'make_app_with_state': make_http_app,
+ 'make_database_for_test': tests.make_memory_database_for_test,
+ }),
+ ('py-oauth-http', {
+ 'make_app_with_state': make_oauth_http_app,
+ 'make_database_for_test': tests.make_memory_database_for_test,
+ 'oauth': True
+ }),
+ ]
+
+ oauth = False
+
+ def do_sync(self, target_name):
+ if self.oauth:
+ path = '~/' + target_name
+ extra = dict(creds={'oauth': {
+ 'consumer_key': tests.consumer1.key,
+ 'consumer_secret': tests.consumer1.secret,
+ 'token_key': tests.token1.key,
+ 'token_secret': tests.token1.secret
+ }})
+ else:
+ path = target_name
+ extra = {}
+ target_url = self.getURL(path)
+ return self.db.sync(target_url, **extra)
+
+ def setUp(self):
+ super(TestDbSync, self).setUp()
+ self.startServer()
+ self.db = self.make_database_for_test(self, 'test1')
+ self.db2 = self.request_state._create_database('test2.db')
+
+ def test_db_sync(self):
+ doc1 = self.db.create_doc_from_json(tests.simple_doc)
+ doc2 = self.db2.create_doc_from_json(tests.nested_doc)
+ local_gen_before_sync = self.do_sync('test2.db')
+ gen, _, changes = self.db.whats_changed(local_gen_before_sync)
+ self.assertEqual(1, len(changes))
+ self.assertEqual(doc2.doc_id, changes[0][0])
+ self.assertEqual(1, gen - local_gen_before_sync)
+ self.assertGetDoc(self.db2, doc1.doc_id, doc1.rev, tests.simple_doc,
+ False)
+ self.assertGetDoc(self.db, doc2.doc_id, doc2.rev, tests.nested_doc,
+ False)
+
+ def test_db_sync_autocreate(self):
+ doc1 = self.db.create_doc_from_json(tests.simple_doc)
+ local_gen_before_sync = self.do_sync('test3.db')
+ gen, _, changes = self.db.whats_changed(local_gen_before_sync)
+ self.assertEqual(0, gen - local_gen_before_sync)
+ db3 = self.request_state.open_database('test3.db')
+ gen, _, changes = db3.whats_changed()
+ self.assertEqual(1, len(changes))
+ self.assertEqual(doc1.doc_id, changes[0][0])
+ self.assertGetDoc(db3, doc1.doc_id, doc1.rev, tests.simple_doc,
+ False)
+ t_gen, _ = self.db._get_replica_gen_and_trans_id('test3.db')
+ s_gen, _ = db3._get_replica_gen_and_trans_id('test1')
+ self.assertEqual(1, t_gen)
+ self.assertEqual(1, s_gen)
+
+
+class TestRemoteSyncIntegration(tests.TestCaseWithServer):
+ """Integration tests for the most common sync scenario local -> remote"""
+
+ make_app_with_state = staticmethod(make_http_app)
+
+ def setUp(self):
+ super(TestRemoteSyncIntegration, self).setUp()
+ self.startServer()
+ self.db1 = inmemory.InMemoryDatabase('test1')
+ self.db2 = self.request_state._create_database('test2')
+
+ def test_sync_tracks_generations_incrementally(self):
+ doc11 = self.db1.create_doc_from_json('{"a": 1}')
+ doc12 = self.db1.create_doc_from_json('{"a": 2}')
+ doc21 = self.db2.create_doc_from_json('{"b": 1}')
+ doc22 = self.db2.create_doc_from_json('{"b": 2}')
+ #sanity
+ self.assertEqual(2, len(self.db1._get_transaction_log()))
+ self.assertEqual(2, len(self.db2._get_transaction_log()))
+ progress1 = []
+ progress2 = []
+ _do_set_replica_gen_and_trans_id = \
+ self.db1._do_set_replica_gen_and_trans_id
+
+ def set_sync_generation_witness1(other_uid, other_gen, trans_id):
+ progress1.append((other_uid, other_gen,
+ [d for d, t in self.db1._get_transaction_log()[2:]]))
+ _do_set_replica_gen_and_trans_id(other_uid, other_gen, trans_id)
+ self.patch(self.db1, '_do_set_replica_gen_and_trans_id',
+ set_sync_generation_witness1)
+ _do_set_replica_gen_and_trans_id2 = \
+ self.db2._do_set_replica_gen_and_trans_id
+
+ def set_sync_generation_witness2(other_uid, other_gen, trans_id):
+ progress2.append((other_uid, other_gen,
+ [d for d, t in self.db2._get_transaction_log()[2:]]))
+ _do_set_replica_gen_and_trans_id2(other_uid, other_gen, trans_id)
+ self.patch(self.db2, '_do_set_replica_gen_and_trans_id',
+ set_sync_generation_witness2)
+
+ db2_url = self.getURL('test2')
+ self.db1.sync(db2_url)
+
+ self.assertEqual([('test2', 1, [doc21.doc_id]),
+ ('test2', 2, [doc21.doc_id, doc22.doc_id]),
+ ('test2', 4, [doc21.doc_id, doc22.doc_id])],
+ progress1)
+ self.assertEqual([('test1', 1, [doc11.doc_id]),
+ ('test1', 2, [doc11.doc_id, doc12.doc_id]),
+ ('test1', 4, [doc11.doc_id, doc12.doc_id])],
+ progress2)
+
+
+load_tests = tests.load_with_scenarios