tasks/service/history/api/replication/get_tasks.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 replication

import (
	"context"
	"time"

	replicationspb "go.temporal.io/server/api/replication/v1"
	"go.temporal.io/server/common/log/tag"
	"go.temporal.io/server/common/persistence"
	"go.temporal.io/server/service/history/replication"
	"go.temporal.io/server/service/history/shard"
	"go.temporal.io/server/service/history/tasks"
)

func GetTasks(
	ctx context.Context,
	shard shard.Context,
	replicationAckMgr replication.AckManager,
	pollingCluster string,
	ackMessageID int64,
	ackTimestamp time.Time,
	queryMessageID int64,
) (*replicationspb.ReplicationMessages, error) {

	if ackMessageID != persistence.EmptyQueueMessageID {
		if err := shard.UpdateQueueClusterAckLevel(
			tasks.CategoryReplication,
			pollingCluster,
			tasks.NewImmediateKey(ackMessageID),
		); err != nil {
			shard.GetLogger().Error("error updating replication level for shard", tag.Error(err), tag.OperationFailed)
		}
		shard.UpdateRemoteClusterInfo(pollingCluster, ackMessageID, ackTimestamp)
	}

	replicationMessages, err := replicationAckMgr.GetTasks(
		ctx,
		pollingCluster,
		queryMessageID,
	)
	if err != nil {
		shard.GetLogger().Error("Failed to retrieve replication messages.", tag.Error(err))
		return nil, err
	}

	shard.GetLogger().Debug("Successfully fetched replication messages.", tag.Counter(len(replicationMessages.ReplicationTasks)))
	return replicationMessages, nil
}