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history_resender.go
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history_resender.go
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// Copyright (c) 2019 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.
//go:generate mockgen -package $GOPACKAGE -source $GOFILE -destination history_resender_mock.go
package ndc
import (
"context"
"errors"
"fmt"
"time"
adminClient "github.com/uber/cadence/client/admin"
"github.com/uber/cadence/common/cache"
"github.com/uber/cadence/common/collection"
"github.com/uber/cadence/common/dynamicconfig"
"github.com/uber/cadence/common/log"
"github.com/uber/cadence/common/log/tag"
"github.com/uber/cadence/common/persistence"
"github.com/uber/cadence/common/reconciliation/entity"
"github.com/uber/cadence/common/reconciliation/invariant"
"github.com/uber/cadence/common/types"
)
var (
// ErrSkipTask is the error to skip task due to absence of the workflow in the source cluster
ErrSkipTask = errors.New("the source workflow does not exist")
)
const (
resendContextTimeout = 30 * time.Second
defaultPageSize = int32(100)
)
type (
// nDCHistoryReplicationFn provides the functionality to deliver replication raw history request to history
// the provided func should be thread safe
nDCHistoryReplicationFn func(ctx context.Context, request *types.ReplicateEventsV2Request) error
// HistoryResender is the interface for resending history events to remote
HistoryResender interface {
// SendSingleWorkflowHistory sends multiple run IDs's history events to remote
SendSingleWorkflowHistory(
domainID string,
workflowID string,
runID string,
startEventID *int64,
startEventVersion *int64,
endEventID *int64,
endEventVersion *int64,
) error
}
// HistoryResenderImpl is the implementation of NDCHistoryResender
HistoryResenderImpl struct {
domainCache cache.DomainCache
adminClient adminClient.Client
historyReplicationFn nDCHistoryReplicationFn
rereplicationTimeout dynamicconfig.DurationPropertyFnWithDomainIDFilter
currentExecutionCheck invariant.Invariant
logger log.Logger
}
historyBatch struct {
versionHistory *types.VersionHistory
rawEventBatch *types.DataBlob
}
)
// NewHistoryResender create a new NDCHistoryResenderImpl
func NewHistoryResender(
domainCache cache.DomainCache,
adminClient adminClient.Client,
historyReplicationFn nDCHistoryReplicationFn,
rereplicationTimeout dynamicconfig.DurationPropertyFnWithDomainIDFilter,
currentExecutionCheck invariant.Invariant,
logger log.Logger,
) *HistoryResenderImpl {
return &HistoryResenderImpl{
domainCache: domainCache,
adminClient: adminClient,
historyReplicationFn: historyReplicationFn,
rereplicationTimeout: rereplicationTimeout,
currentExecutionCheck: currentExecutionCheck,
logger: logger.WithTags(tag.ComponentHistoryResender),
}
}
// SendSingleWorkflowHistory sends one run IDs's history events to remote
func (n *HistoryResenderImpl) SendSingleWorkflowHistory(
domainID string,
workflowID string,
runID string,
startEventID *int64,
startEventVersion *int64,
endEventID *int64,
endEventVersion *int64,
) error {
domainName, err := n.domainCache.GetDomainName(domainID)
if err != nil {
return fmt.Errorf("getting domain: %w", err)
}
ctx := context.Background()
var cancel context.CancelFunc
if n.rereplicationTimeout != nil {
resendContextTimeout := n.rereplicationTimeout(domainID)
if resendContextTimeout > 0 {
ctx, cancel = context.WithTimeout(ctx, resendContextTimeout)
defer cancel()
}
}
historyIterator := collection.NewPagingIterator(n.getPaginationFn(
ctx,
domainName,
workflowID,
runID,
startEventID,
startEventVersion,
endEventID,
endEventVersion))
for historyIterator.HasNext() {
result, err := historyIterator.Next()
if err != nil {
return fmt.Errorf("history iterator: %w", err)
}
historyBatch := result.(*historyBatch)
replicationRequest := n.createReplicationRawRequest(
domainID,
workflowID,
runID,
historyBatch.rawEventBatch,
historyBatch.versionHistory.GetItems())
err = n.sendReplicationRawRequest(ctx, replicationRequest)
switch err.(type) {
case nil:
// continue to process the events
break
case *types.EntityNotExistsError:
// Case 1: the workflow pass the retention period
// Case 2: the workflow is corrupted
if skipTask := n.fixCurrentExecution(ctx, domainID, workflowID, runID); skipTask {
return ErrSkipTask
}
return err
default:
return fmt.Errorf("sending replication request: %w", err)
}
}
return nil
}
func (n *HistoryResenderImpl) getPaginationFn(
ctx context.Context,
domainName string,
workflowID string,
runID string,
startEventID *int64,
startEventVersion *int64,
endEventID *int64,
endEventVersion *int64,
) collection.PaginationFn {
return func(paginationToken []byte) ([]interface{}, []byte, error) {
response, err := n.getHistory(
ctx,
domainName,
workflowID,
runID,
startEventID,
startEventVersion,
endEventID,
endEventVersion,
paginationToken,
defaultPageSize,
)
if err != nil {
return nil, nil, err
}
var paginateItems []interface{}
versionHistory := response.GetVersionHistory()
for _, history := range response.GetHistoryBatches() {
batch := &historyBatch{
versionHistory: versionHistory,
rawEventBatch: history,
}
paginateItems = append(paginateItems, batch)
}
return paginateItems, response.NextPageToken, nil
}
}
func (n *HistoryResenderImpl) createReplicationRawRequest(
domainID string,
workflowID string,
runID string,
historyBlob *types.DataBlob,
versionHistoryItems []*types.VersionHistoryItem,
) *types.ReplicateEventsV2Request {
request := &types.ReplicateEventsV2Request{
DomainUUID: domainID,
WorkflowExecution: &types.WorkflowExecution{
WorkflowID: workflowID,
RunID: runID,
},
Events: historyBlob,
VersionHistoryItems: versionHistoryItems,
}
return request
}
func (n *HistoryResenderImpl) sendReplicationRawRequest(
ctx context.Context,
request *types.ReplicateEventsV2Request,
) error {
ctx, cancel := context.WithTimeout(ctx, resendContextTimeout)
defer cancel()
return n.historyReplicationFn(ctx, request)
}
func (n *HistoryResenderImpl) getHistory(
ctx context.Context,
domainName string,
workflowID string,
runID string,
startEventID *int64,
startEventVersion *int64,
endEventID *int64,
endEventVersion *int64,
token []byte,
pageSize int32,
) (*types.GetWorkflowExecutionRawHistoryV2Response, error) {
ctx, cancel := context.WithTimeout(ctx, resendContextTimeout)
defer cancel()
response, err := n.adminClient.GetWorkflowExecutionRawHistoryV2(ctx, &types.GetWorkflowExecutionRawHistoryV2Request{
Domain: domainName,
Execution: &types.WorkflowExecution{
WorkflowID: workflowID,
RunID: runID,
},
StartEventID: startEventID,
StartEventVersion: startEventVersion,
EndEventID: endEventID,
EndEventVersion: endEventVersion,
MaximumPageSize: pageSize,
NextPageToken: token,
})
if err != nil {
return nil, fmt.Errorf("getting history: %w", err)
}
return response, nil
}
func (n *HistoryResenderImpl) fixCurrentExecution(
ctx context.Context,
domainID string,
workflowID string,
runID string,
) bool {
if n.currentExecutionCheck == nil {
return false
}
execution := &entity.CurrentExecution{
Execution: entity.Execution{
DomainID: domainID,
WorkflowID: workflowID,
State: persistence.WorkflowStateRunning,
},
}
res := n.currentExecutionCheck.Check(ctx, execution)
switch res.CheckResultType {
case invariant.CheckResultTypeCorrupted:
n.logger.Error(
"Encounter corrupted workflow",
tag.WorkflowDomainID(domainID),
tag.WorkflowID(workflowID),
tag.WorkflowRunID(runID),
)
n.currentExecutionCheck.Fix(ctx, execution)
return false
case invariant.CheckResultTypeFailed:
return false
default:
return true
}
}