[Sync] Refactor sync configuration logic.

sync/engine/sync_scheduler_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/memory/weak_ptr.h"
 #include "base/message_loop.h"
 #include "base/test/test_timeouts.h"
 #include "sync/engine/sync_scheduler.h"
 #include "sync/engine/syncer.h"
 #include "sync/sessions/test_util.h"
+#include "sync/test/callback_counter.h"
 #include "sync/test/engine/fake_model_worker.h"
 #include "sync/test/engine/mock_connection_manager.h"
 #include "sync/test/engine/test_directory_setter_upper.h"
 #include "sync/test/fake_extensions_activity_monitor.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using base::TimeDelta;
 using base::TimeTicks;
 using testing::_;
 using testing::AtLeast;
 using testing::DoAll;
 using testing::Eq;
 using testing::Invoke;
 using testing::Mock;
+using testing::Not;
 using testing::Return;
 using testing::WithArg;
 
 namespace browser_sync {
 using sessions::SyncSession;
 using sessions::SyncSessionContext;
 using sessions::SyncSessionSnapshot;
 using syncable::ModelTypeSet;
 using sync_pb::GetUpdatesCallerInfo;
 
@@ skipping 22 matching lines @@
 }
 
 void PumpLoop() {
   // Do it this way instead of RunAllPending to pump loop exactly once
   // (necessary in the presence of timers; see comment in
   // QuitLoopNow).
   MessageLoop::current()->PostTask(FROM_HERE, base::Bind(&QuitLoopNow));
   RunLoop();
 }
 
+ModelSafeRoutingInfo TypesToRoutingInfo(const ModelTypeSet& types) {
+  ModelSafeRoutingInfo routes;
+  for (ModelTypeSet::Iterator iter = types.First(); iter.Good(); iter.Inc()) {
+    routes[iter.Get()] = GROUP_PASSIVE;
+  }
+  return routes;
+}
+
 // Convenient to use in tests wishing to analyze SyncShare calls over time.
 static const size_t kMinNumSamples = 5;
 class SyncSchedulerTest : public testing::Test {
  public:
   SyncSchedulerTest()
       : weak_ptr_factory_(ALLOW_THIS_IN_INITIALIZER_LIST(this)),
         context_(NULL),
         syncer_(NULL),
         delay_(NULL) {}
 
@@ skipping 62 matching lines @@
       EXPECT_EQ(GetUpdatesCallerInfo::PERIODIC,
                 records.snapshots[i].source().updates_source);
     }
   }
 
   void DoQuitLoopNow() {
     QuitLoopNow();
   }
 
   void StartSyncScheduler(SyncScheduler::Mode mode) {
-    scheduler()->Start(mode, base::Closure());
+    scheduler()->Start(mode);
   }
 
   // This stops the scheduler synchronously.
   void StopSyncScheduler() {
     scheduler()->RequestStop(base::Bind(&SyncSchedulerTest::DoQuitLoopNow,
                              weak_ptr_factory_.GetWeakPtr()));
     RunLoop();
   }
 
   bool RunAndGetBackoff() {
@@ skipping 117 matching lines @@
   EXPECT_EQ(GetUpdatesCallerInfo::LOCAL,
             records2.snapshots[0].source().updates_source);
 }
 
 // Make sure a regular config command is scheduled fine in the absence of any
 // errors.
 TEST_F(SyncSchedulerTest, Config) {
   SyncShareRecords records;
   const ModelTypeSet model_types(syncable::BOOKMARKS);
 
-  EXPECT_CALL(*syncer(), SyncShare(_,_,_))
+  EXPECT_CALL(*syncer(),
+              SyncShare(_,_,_))
+      .WillOnce(Invoke(sessions::test_util::SimulateSuccess))
       .WillOnce(DoAll(Invoke(sessions::test_util::SimulateSuccess),
                       WithArg<0>(RecordSyncShare(&records))));
 
   StartSyncScheduler(SyncScheduler::CONFIGURATION_MODE);
 
-  scheduler()->ScheduleConfiguration(
-      model_types, GetUpdatesCallerInfo::RECONFIGURATION);
+  CallbackCounter counter;
+  ConfigureParams params(
+      GetUpdatesCallerInfo::RECONFIGURATION,
+      model_types,
+      TypesToRoutingInfo(model_types),
+      false,
+      base::Bind(&CallbackCounter::Callback, base::Unretained(&counter)));
+  ASSERT_TRUE(scheduler()->ScheduleConfiguration(params));
+  ASSERT_EQ(1, counter.times_called());
 
   ASSERT_EQ(1U, records.snapshots.size());
   EXPECT_TRUE(CompareModelTypeSetToModelTypePayloadMap(model_types,
       records.snapshots[0].source().types));
   EXPECT_EQ(GetUpdatesCallerInfo::RECONFIGURATION,
             records.snapshots[0].source().updates_source);
 }
 
 // Simulate a failure and make sure the config request is retried.
 TEST_F(SyncSchedulerTest, ConfigWithBackingOff) {
   UseMockDelayProvider();
   EXPECT_CALL(*delay(), GetDelay(_))
       .WillRepeatedly(Return(TimeDelta::FromMilliseconds(1)));
   SyncShareRecords records;
   const ModelTypeSet model_types(syncable::BOOKMARKS);
 
-  EXPECT_CALL(*syncer(), SyncShare(_,_,_))
+  EXPECT_CALL(*syncer(),
+              SyncShare(_,_,_))
+      .WillOnce(Invoke(sessions::test_util::SimulateSuccess))
       .WillOnce(DoAll(Invoke(sessions::test_util::SimulateCommitFailed),
                       WithArg<0>(RecordSyncShare(&records))))
       .WillOnce(DoAll(Invoke(sessions::test_util::SimulateSuccess),
                       WithArg<0>(RecordSyncShare(&records))));
 
   StartSyncScheduler(SyncScheduler::CONFIGURATION_MODE);
 
   ASSERT_EQ(0U, records.snapshots.size());
-  scheduler()->ScheduleConfiguration(
-      model_types, GetUpdatesCallerInfo::RECONFIGURATION);
+  CallbackCounter counter;
+  ConfigureParams params(
+      GetUpdatesCallerInfo::RECONFIGURATION,
+      model_types,
+      TypesToRoutingInfo(model_types),
+      false,
+      base::Bind(&CallbackCounter::Callback, base::Unretained(&counter)));
+  ASSERT_FALSE(scheduler()->ScheduleConfiguration(params));
+  ASSERT_EQ(0, counter.times_called());
 
   ASSERT_EQ(1U, records.snapshots.size());
   RunLoop();
 
   ASSERT_EQ(2U, records.snapshots.size());
+  ASSERT_EQ(1, counter.times_called());
   EXPECT_TRUE(CompareModelTypeSetToModelTypePayloadMap(model_types,
       records.snapshots[1].source().types));
   EXPECT_EQ(GetUpdatesCallerInfo::RECONFIGURATION,
             records.snapshots[1].source().updates_source);
 }
 
-// Issue 2 config commands. Second one right after the first has failed
-// and make sure LATEST is executed.
-TEST_F(SyncSchedulerTest, MultipleConfigWithBackingOff) {
-  const ModelTypeSet
-      model_types1(syncable::BOOKMARKS),
-      model_types2(syncable::AUTOFILL);
-  UseMockDelayProvider();
-  EXPECT_CALL(*delay(), GetDelay(_))
-      .WillRepeatedly(Return(TimeDelta::FromMilliseconds(30)));
-  SyncShareRecords records;
-
-  EXPECT_CALL(*syncer(), SyncShare(_,_,_))
-      .WillOnce(DoAll(Invoke(sessions::test_util::SimulateCommitFailed),
-                      WithArg<0>(RecordSyncShare(&records))))
-      .WillOnce(DoAll(Invoke(sessions::test_util::SimulateCommitFailed),
-                      WithArg<0>(RecordSyncShare(&records))))
-      .WillOnce(DoAll(Invoke(sessions::test_util::SimulateSuccess),
-                      WithArg<0>(RecordSyncShare(&records))));
-
-  StartSyncScheduler(SyncScheduler::CONFIGURATION_MODE);
-
-  ASSERT_EQ(0U, records.snapshots.size());
-  scheduler()->ScheduleConfiguration(
-      model_types1, GetUpdatesCallerInfo::RECONFIGURATION);
-
-  ASSERT_EQ(1U, records.snapshots.size());
-  scheduler()->ScheduleConfiguration(
-      model_types2, GetUpdatesCallerInfo::RECONFIGURATION);
-
-  // A canary job gets posted when we go into exponential backoff.
-  RunLoop();
-
-  ASSERT_EQ(2U, records.snapshots.size());
-  RunLoop();
-
-  ASSERT_EQ(3U, records.snapshots.size());
-  EXPECT_TRUE(CompareModelTypeSetToModelTypePayloadMap(model_types2,
-      records.snapshots[2].source().types));
-  EXPECT_EQ(GetUpdatesCallerInfo::RECONFIGURATION,
-            records.snapshots[2].source().updates_source);
-}
-
 // Issue a nudge when the config has failed. Make sure both the config and
 // nudge are executed.
 TEST_F(SyncSchedulerTest, NudgeWithConfigWithBackingOff) {
   const ModelTypeSet model_types(syncable::BOOKMARKS);
   UseMockDelayProvider();
   EXPECT_CALL(*delay(), GetDelay(_))
       .WillRepeatedly(Return(TimeDelta::FromMilliseconds(50)));
   SyncShareRecords records;
 
   EXPECT_CALL(*syncer(), SyncShare(_,_,_))
       .WillOnce(DoAll(Invoke(sessions::test_util::SimulateCommitFailed),
                       WithArg<0>(RecordSyncShare(&records))))
       .WillOnce(DoAll(Invoke(sessions::test_util::SimulateCommitFailed),
                       WithArg<0>(RecordSyncShare(&records))))
       .WillOnce(DoAll(Invoke(sessions::test_util::SimulateSuccess),
                       WithArg<0>(RecordSyncShare(&records))))
       .WillOnce(DoAll(Invoke(sessions::test_util::SimulateSuccess),
                       WithArg<0>(RecordSyncShare(&records))));
 
   StartSyncScheduler(SyncScheduler::CONFIGURATION_MODE);
 
   ASSERT_EQ(0U, records.snapshots.size());
-  scheduler()->ScheduleConfiguration(
-      model_types, GetUpdatesCallerInfo::RECONFIGURATION);
+  CallbackCounter counter;
+  ConfigureParams params(
+      GetUpdatesCallerInfo::RECONFIGURATION,
+      model_types,
+      TypesToRoutingInfo(model_types),
+      false,
+      base::Bind(&CallbackCounter::Callback, base::Unretained(&counter)));
+  ASSERT_FALSE(scheduler()->ScheduleConfiguration(params));
+  ASSERT_EQ(0, counter.times_called());
+  ASSERT_EQ(1U, records.snapshots.size());
 
-  ASSERT_EQ(1U, records.snapshots.size());
   scheduler()->ScheduleNudgeAsync(
       zero(), NUDGE_SOURCE_LOCAL, model_types, FROM_HERE);
   RunLoop();
+  ASSERT_EQ(2U, records.snapshots.size());
+  ASSERT_EQ(0, counter.times_called());
 
-  ASSERT_EQ(2U, records.snapshots.size());
   RunLoop();
+  ASSERT_EQ(3U, records.snapshots.size());
+  ASSERT_EQ(1, counter.times_called());
 
   // Now change the mode so nudge can execute.
-  ASSERT_EQ(3U, records.snapshots.size());
   StartSyncScheduler(SyncScheduler::NORMAL_MODE);
 
   ASSERT_EQ(4U, records.snapshots.size());
 
   EXPECT_TRUE(CompareModelTypeSetToModelTypePayloadMap(model_types,
       records.snapshots[2].source().types));
   EXPECT_EQ(GetUpdatesCallerInfo::RECONFIGURATION,
             records.snapshots[2].source().updates_source);
 
   EXPECT_TRUE(CompareModelTypeSetToModelTypePayloadMap(model_types,
@@ skipping 284 matching lines @@
                     QuitLoopNowAction()));
   StartSyncScheduler(SyncScheduler::NORMAL_MODE);
 
   scheduler()->ScheduleNudgeAsync(
       zero(), NUDGE_SOURCE_LOCAL, ModelTypeSet(), FROM_HERE);
 
   // We should detect the failure on the second sync share, and go into backoff.
   EXPECT_TRUE(RunAndGetBackoff());
 }
 
-// Test that no syncing occurs when throttled.
+// Test that no syncing occurs when throttled (although CleanupDisabledTypes
+// is allowed).
 TEST_F(SyncSchedulerTest, ThrottlingDoesThrottle) {
   const ModelTypeSet types(syncable::BOOKMARKS);
   TimeDelta poll(TimeDelta::FromMilliseconds(5));
   TimeDelta throttle(TimeDelta::FromMinutes(10));
   scheduler()->OnReceivedLongPollIntervalUpdate(poll);
-  EXPECT_CALL(*syncer(), SyncShare(_,_,_))
+
+  EXPECT_CALL(*syncer(),
+              SyncShare(_, CLEANUP_DISABLED_TYPES, CLEANUP_DISABLED_TYPES))
+      .WillOnce(Invoke(sessions::test_util::SimulateSuccess));
+  EXPECT_CALL(*syncer(), SyncShare(_,Not(CLEANUP_DISABLED_TYPES),
+                                     Not(CLEANUP_DISABLED_TYPES)))
       .WillOnce(WithArg<0>(sessions::test_util::SimulateThrottled(throttle)))
       .WillRepeatedly(AddFailureAndQuitLoopNow());
 
   StartSyncScheduler(SyncScheduler::NORMAL_MODE);
 
   scheduler()->ScheduleNudgeAsync(
       zero(), NUDGE_SOURCE_LOCAL, types, FROM_HERE);
   PumpLoop();
 
   StartSyncScheduler(SyncScheduler::CONFIGURATION_MODE);
 
-  scheduler()->ScheduleConfiguration(
-      types, GetUpdatesCallerInfo::RECONFIGURATION);
+  CallbackCounter counter;
+  ConfigureParams params(
+      GetUpdatesCallerInfo::RECONFIGURATION,
+      types,
+      TypesToRoutingInfo(types),
+      false,
+      base::Bind(&CallbackCounter::Callback, base::Unretained(&counter)));
+  ASSERT_FALSE(scheduler()->ScheduleConfiguration(params));
+  ASSERT_EQ(0, counter.times_called());
 }
 
 TEST_F(SyncSchedulerTest, ThrottlingExpires) {
   SyncShareRecords records;
   TimeDelta poll(TimeDelta::FromMilliseconds(15));
   TimeDelta throttle1(TimeDelta::FromMilliseconds(150));
   scheduler()->OnReceivedLongPollIntervalUpdate(poll);
 
   ::testing::InSequence seq;
   EXPECT_CALL(*syncer(), SyncShare(_,_,_))
@@ skipping 12 matching lines @@
   StopSyncScheduler();
   AnalyzePollRun(records, kMinNumSamples, optimal_start, poll);
 }
 
 // Test nudges / polls don't run in config mode and config tasks do.
 TEST_F(SyncSchedulerTest, ConfigurationMode) {
   TimeDelta poll(TimeDelta::FromMilliseconds(15));
   SyncShareRecords records;
   scheduler()->OnReceivedLongPollIntervalUpdate(poll);
   EXPECT_CALL(*syncer(), SyncShare(_,_,_))
+      .WillOnce(Invoke(sessions::test_util::SimulateSuccess))
       .WillOnce(DoAll(Invoke(sessions::test_util::SimulateSuccess),
                       WithArg<0>(RecordSyncShare(&records))));
 
   StartSyncScheduler(SyncScheduler::CONFIGURATION_MODE);
 
   const ModelTypeSet nudge_types(syncable::AUTOFILL);
   scheduler()->ScheduleNudgeAsync(
       zero(), NUDGE_SOURCE_LOCAL, nudge_types, FROM_HERE);
   scheduler()->ScheduleNudgeAsync(
       zero(), NUDGE_SOURCE_LOCAL, nudge_types, FROM_HERE);
 
   const ModelTypeSet config_types(syncable::BOOKMARKS);
 
-  scheduler()->ScheduleConfiguration(
-      config_types, GetUpdatesCallerInfo::RECONFIGURATION);
+  CallbackCounter counter;
+  ConfigureParams params(
+      GetUpdatesCallerInfo::RECONFIGURATION,
+      config_types,
+      TypesToRoutingInfo(config_types),
+      false,
+      base::Bind(&CallbackCounter::Callback, base::Unretained(&counter)));
+  ASSERT_TRUE(scheduler()->ScheduleConfiguration(params));
+  ASSERT_EQ(1, counter.times_called());
 
   ASSERT_EQ(1U, records.snapshots.size());
   EXPECT_TRUE(CompareModelTypeSetToModelTypePayloadMap(config_types,
       records.snapshots[0].source().types));
 }
 
 class BackoffTriggersSyncSchedulerTest : public SyncSchedulerTest {
   void SetUp() {
     SyncSchedulerTest::SetUp();
     UseMockDelayProvider();
@@ skipping 48 matching lines @@
 }
 
 // Test that no polls or extraneous nudges occur when in backoff.
 TEST_F(SyncSchedulerTest, BackoffDropsJobs) {
   SyncShareRecords r;
   TimeDelta poll(TimeDelta::FromMilliseconds(5));
   const ModelTypeSet types(syncable::BOOKMARKS);
   scheduler()->OnReceivedLongPollIntervalUpdate(poll);
   UseMockDelayProvider();
 
-  EXPECT_CALL(*syncer(), SyncShare(_,_,_)).Times(1)
+  EXPECT_CALL(*syncer(), SyncShare(_,_,_))
       .WillRepeatedly(DoAll(Invoke(sessions::test_util::SimulateCommitFailed),
                             RecordSyncShareMultiple(&r, 1U)));
   EXPECT_CALL(*delay(), GetDelay(_)).
       WillRepeatedly(Return(TimeDelta::FromDays(1)));
 
   StartSyncScheduler(SyncScheduler::NORMAL_MODE);
 
   // This nudge should fail and put us into backoff.  Thanks to our mock
   // GetDelay() setup above, this will be a long backoff.
   scheduler()->ScheduleNudgeAsync(zero(), NUDGE_SOURCE_LOCAL, types, FROM_HERE);
@@ skipping 21 matching lines @@
             r.snapshots[1].source().updates_source);
 
   // Cleanup is not affected by backoff, but it should not relieve it either.
   EXPECT_CALL(*syncer(),
               SyncShare(_, CLEANUP_DISABLED_TYPES, CLEANUP_DISABLED_TYPES))
       .WillOnce(Invoke(sessions::test_util::SimulateSuccess));
   EXPECT_CALL(*delay(), GetDelay(_)).Times(0);
 
   StartSyncScheduler(SyncScheduler::CONFIGURATION_MODE);
 
-  scheduler()->CleanupDisabledTypes();
-  scheduler()->ScheduleConfiguration(
-      types, GetUpdatesCallerInfo::RECONFIGURATION);
+  CallbackCounter counter;
+  ConfigureParams params(
+      GetUpdatesCallerInfo::RECONFIGURATION,
+      types,
+      TypesToRoutingInfo(types),
+      false,
+      base::Bind(&CallbackCounter::Callback, base::Unretained(&counter)));
+  ASSERT_FALSE(scheduler()->ScheduleConfiguration(params));
+  ASSERT_EQ(0, counter.times_called());
 
   StartSyncScheduler(SyncScheduler::NORMAL_MODE);
 
   scheduler()->ScheduleNudgeAsync(
       zero(), NUDGE_SOURCE_LOCAL, types, FROM_HERE);
   scheduler()->ScheduleNudgeAsync(
       zero(), NUDGE_SOURCE_LOCAL, types, FROM_HERE);
   PumpLoop();
 }
 
@@ skipping 148 matching lines @@
   // ClearUserData.
   EXPECT_CALL(*syncer(), SyncShare(_, CLEAR_PRIVATE_DATA, CLEAR_PRIVATE_DATA))
       .WillOnce(Invoke(sessions::test_util::SimulateSuccess));
   StartSyncScheduler(SyncScheduler::NORMAL_MODE);
 
   scheduler()->ClearUserData();
 
   StopSyncScheduler();
   Mock::VerifyAndClearExpectations(syncer());
 
-  // Configuration.
+  // Configuration (always includes a cleanup disabled types).
+  EXPECT_CALL(*syncer(),
+              SyncShare(_, CLEANUP_DISABLED_TYPES, CLEANUP_DISABLED_TYPES))
+      .WillOnce(Invoke(sessions::test_util::SimulateSuccess));
   EXPECT_CALL(*syncer(), SyncShare(_, DOWNLOAD_UPDATES, APPLY_UPDATES))
       .WillOnce(Invoke(sessions::test_util::SimulateSuccess));
   StartSyncScheduler(SyncScheduler::CONFIGURATION_MODE);
 
-  scheduler()->ScheduleConfiguration(
-      ModelTypeSet(), GetUpdatesCallerInfo::RECONFIGURATION);
-
+  syncable::ModelTypeSet model_types(syncable::BOOKMARKS);
+  CallbackCounter counter;
+  ConfigureParams params(
+      GetUpdatesCallerInfo::RECONFIGURATION,
+      model_types,
+      TypesToRoutingInfo(model_types),
+      false,
+      base::Bind(&CallbackCounter::Callback, base::Unretained(&counter)));
+  ASSERT_TRUE(scheduler()->ScheduleConfiguration(params));
+  ASSERT_EQ(1, counter.times_called());
+  // Runs directly so no need to pump the loop.
   StopSyncScheduler();
   Mock::VerifyAndClearExpectations(syncer());
 
-  // Cleanup disabled types.
+  // Cleanup disabled types. Because no types are being configured, we just
+  // perform the cleanup.
   EXPECT_CALL(*syncer(),
-              SyncShare(_, CLEANUP_DISABLED_TYPES, CLEANUP_DISABLED_TYPES))
-      .WillOnce(Invoke(sessions::test_util::SimulateSuccess));
-  StartSyncScheduler(SyncScheduler::NORMAL_MODE);
+              SyncShare(_, CLEANUP_DISABLED_TYPES, CLEANUP_DISABLED_TYPES)).
+      WillOnce(Invoke(sessions::test_util::SimulateSuccess));
+  StartSyncScheduler(SyncScheduler::CONFIGURATION_MODE);
 
-  scheduler()->CleanupDisabledTypes();
-
+  CallbackCounter counter2;
+  ConfigureParams params2(
+      GetUpdatesCallerInfo::RECONFIGURATION,
+      ModelTypeSet(),
+      ModelSafeRoutingInfo(),
+      false,
+      base::Bind(&CallbackCounter::Callback, base::Unretained(&counter2)));
+  ASSERT_TRUE(scheduler()->ScheduleConfiguration(params2));
+  ASSERT_EQ(1, counter2.times_called());
   StopSyncScheduler();
   Mock::VerifyAndClearExpectations(syncer());
 
+  StartSyncScheduler(SyncScheduler::NORMAL_MODE);
+
   // Poll.
   EXPECT_CALL(*syncer(), SyncShare(_, SYNCER_BEGIN, SYNCER_END))
       .Times(AtLeast(1))
       .WillRepeatedly(DoAll(Invoke(sessions::test_util::SimulateSuccess),
                             QuitLoopNowAction()));
   const TimeDelta poll(TimeDelta::FromMilliseconds(10));
   scheduler()->OnReceivedLongPollIntervalUpdate(poll);
 
   StartSyncScheduler(SyncScheduler::NORMAL_MODE);
 
@@ skipping 44 matching lines @@
   PumpLoop();
   // Pump again to run job.
   PumpLoop();
 
   StopSyncScheduler();
 
   EXPECT_TRUE(expected == context()->previous_session_routing_info());
 }
 
 }  // namespace browser_sync