tasks/service/history/shard/context_test.go

// The MIT License
//
// Copyright (c) 2020 Temporal Technologies Inc.  All rights reserved.
//
// Copyright (c) 2020 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

package shard

import (
	"context"
	"math/rand"
	"testing"
	"time"

	"github.com/golang/mock/gomock"
	"github.com/stretchr/testify/require"
	"github.com/stretchr/testify/suite"

	persistencespb "go.temporal.io/server/api/persistence/v1"
	"go.temporal.io/server/common/clock"
	"go.temporal.io/server/common/cluster"
	"go.temporal.io/server/common/convert"
	"go.temporal.io/server/common/namespace"
	"go.temporal.io/server/common/persistence"
	"go.temporal.io/server/common/primitives/timestamp"
	"go.temporal.io/server/service/history/tasks"
	"go.temporal.io/server/service/history/tests"
)

type (
	contextSuite struct {
		suite.Suite
		*require.Assertions

		controller           *gomock.Controller
		mockShard            Context
		mockClusterMetadata  *cluster.MockMetadata
		mockShardManager     *persistence.MockShardManager
		mockExecutionManager *persistence.MockExecutionManager
		mockNamespaceCache   *namespace.MockRegistry
		mockHistoryEngine    *MockEngine

		timeSource *clock.EventTimeSource
	}
)

func TestShardContextSuite(t *testing.T) {
	s := &contextSuite{}
	suite.Run(t, s)
}

func (s *contextSuite) SetupTest() {
	s.Assertions = require.New(s.T())

	s.controller = gomock.NewController(s.T())

	s.timeSource = clock.NewEventTimeSource()
	shardContext := NewTestContextWithTimeSource(
		s.controller,
		&persistence.ShardInfoWithFailover{
			ShardInfo: &persistencespb.ShardInfo{
				ShardId: 0,
				RangeId: 1,
			}},
		tests.NewDynamicConfig(),
		s.timeSource,
	)
	s.mockShard = shardContext

	shardContext.MockHostInfoProvider.EXPECT().HostInfo().Return(shardContext.Resource.GetHostInfo()).AnyTimes()

	s.mockNamespaceCache = shardContext.Resource.NamespaceCache
	s.mockNamespaceCache.EXPECT().GetNamespaceByID(tests.NamespaceID).Return(tests.LocalNamespaceEntry, nil).AnyTimes()

	s.mockClusterMetadata = shardContext.Resource.ClusterMetadata
	s.mockClusterMetadata.EXPECT().GetClusterID().Return(cluster.TestCurrentClusterInitialFailoverVersion).AnyTimes()
	s.mockClusterMetadata.EXPECT().GetCurrentClusterName().Return(cluster.TestCurrentClusterName).AnyTimes()
	s.mockClusterMetadata.EXPECT().GetAllClusterInfo().Return(cluster.TestAllClusterInfo).AnyTimes()

	s.mockExecutionManager = shardContext.Resource.ExecutionMgr
	s.mockShardManager = shardContext.Resource.ShardMgr
	s.mockHistoryEngine = NewMockEngine(s.controller)
	shardContext.engineFuture.Set(s.mockHistoryEngine, nil)
}

func (s *contextSuite) TearDownTest() {
	s.controller.Finish()
}

func (s *contextSuite) TestAddTasks_Success() {
	tasks := map[tasks.Category][]tasks.Task{
		tasks.CategoryTransfer:    {&tasks.ActivityTask{}},           // Just for testing purpose. In the real code ActivityTask can't be passed to shardContext.AddTasks.
		tasks.CategoryTimer:       {&tasks.ActivityRetryTimerTask{}}, // Just for testing purpose. In the real code ActivityRetryTimerTask can't be passed to shardContext.AddTasks.
		tasks.CategoryReplication: {&tasks.HistoryReplicationTask{}}, // Just for testing purpose. In the real code HistoryReplicationTask can't be passed to shardContext.AddTasks.
		tasks.CategoryVisibility:  {&tasks.DeleteExecutionVisibilityTask{}},
	}

	addTasksRequest := &persistence.AddHistoryTasksRequest{
		ShardID:     s.mockShard.GetShardID(),
		NamespaceID: tests.NamespaceID.String(),
		WorkflowID:  tests.WorkflowID,
		RunID:       tests.RunID,

		Tasks: tasks,
	}

	s.mockExecutionManager.EXPECT().AddHistoryTasks(gomock.Any(), addTasksRequest).Return(nil)
	s.mockHistoryEngine.EXPECT().NotifyNewTasks(gomock.Any(), tasks)

	err := s.mockShard.AddTasks(context.Background(), addTasksRequest)
	s.NoError(err)
}

func (s *contextSuite) TestTimerMaxReadLevelInitialization() {

	now := time.Now().Truncate(time.Millisecond)
	persistenceShardInfo := &persistencespb.ShardInfo{
		ShardId: 0,
		QueueAckLevels: map[int32]*persistencespb.QueueAckLevel{
			tasks.CategoryTimer.ID(): {
				AckLevel: now.Add(-time.Minute).UnixNano(),
				ClusterAckLevel: map[string]int64{
					cluster.TestCurrentClusterName: now.UnixNano(),
				},
			},
		},
		QueueStates: map[int32]*persistencespb.QueueState{
			tasks.CategoryTimer.ID(): {
				ExclusiveReaderHighWatermark: &persistencespb.TaskKey{
					FireTime: timestamp.TimePtr(now.Add(time.Duration(rand.Intn(3)-2) * time.Minute)),
					TaskId:   rand.Int63(),
				},
			},
		},
	}
	s.mockShardManager.EXPECT().GetOrCreateShard(gomock.Any(), gomock.Any()).Return(
		&persistence.GetOrCreateShardResponse{
			ShardInfo: persistenceShardInfo,
		},
		nil,
	)

	// clear shardInfo and load from persistence
	shardContextImpl := s.mockShard.(*ContextTest)
	shardContextImpl.shardInfo = nil
	err := shardContextImpl.loadShardMetadata(convert.BoolPtr(false))
	s.NoError(err)

	for clusterName, info := range s.mockShard.GetClusterMetadata().GetAllClusterInfo() {
		if !info.Enabled {
			continue
		}

		timerQueueAckLevels := persistenceShardInfo.QueueAckLevels[tasks.CategoryTimer.ID()]
		timerQueueStates := persistenceShardInfo.QueueStates[tasks.CategoryTimer.ID()]

		maxReadLevel := shardContextImpl.getScheduledTaskMaxReadLevel(clusterName).FireTime
		s.False(maxReadLevel.Before(timestamp.UnixOrZeroTime(timerQueueAckLevels.AckLevel)))

		if clusterAckLevel, ok := timerQueueAckLevels.ClusterAckLevel[clusterName]; ok {
			s.False(maxReadLevel.Before(timestamp.UnixOrZeroTime(clusterAckLevel)))
		}

		s.False(maxReadLevel.Before(timestamp.TimeValue(timerQueueStates.ExclusiveReaderHighWatermark.FireTime)))
	}
}

func (s *contextSuite) TestTimerMaxReadLevelUpdate_MultiProcessor() {
	now := time.Now()
	s.timeSource.Update(now)
	maxReadLevel := s.mockShard.GetQueueExclusiveHighReadWatermark(tasks.CategoryTimer, cluster.TestCurrentClusterName, false)

	s.timeSource.Update(now.Add(-time.Minute))
	newMaxReadLevel := s.mockShard.GetQueueExclusiveHighReadWatermark(tasks.CategoryTimer, cluster.TestCurrentClusterName, false)
	s.Equal(maxReadLevel, newMaxReadLevel)

	s.timeSource.Update(now.Add(time.Minute))
	newMaxReadLevel = s.mockShard.GetQueueExclusiveHighReadWatermark(tasks.CategoryTimer, cluster.TestCurrentClusterName, false)
	s.True(newMaxReadLevel.FireTime.After(maxReadLevel.FireTime))
}

func (s *contextSuite) TestTimerMaxReadLevelUpdate_SingleProcessor() {
	now := time.Now()
	s.timeSource.Update(now)

	// make sure the scheduledTaskMaxReadLevelMap has value for both current cluster and alternative cluster
	s.mockShard.GetQueueExclusiveHighReadWatermark(tasks.CategoryTimer, cluster.TestCurrentClusterName, false)
	s.mockShard.GetQueueExclusiveHighReadWatermark(tasks.CategoryTimer, cluster.TestAlternativeClusterName, false)

	now = time.Now().Add(time.Minute)
	s.timeSource.Update(now)

	// update in single processor mode
	s.mockShard.GetQueueExclusiveHighReadWatermark(tasks.CategoryTimer, cluster.TestCurrentClusterName, true)
	scheduledTaskMaxReadLevelMap := s.mockShard.(*ContextTest).scheduledTaskMaxReadLevelMap
	s.Len(scheduledTaskMaxReadLevelMap, 2)
	s.True(scheduledTaskMaxReadLevelMap[cluster.TestCurrentClusterName].After(now))
	s.True(scheduledTaskMaxReadLevelMap[cluster.TestAlternativeClusterName].After(now))
}