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workflow.go
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workflow.go
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// Copyright (c) 2017 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 parentclosepolicy
import (
"context"
"time"
"go.uber.org/cadence"
"go.uber.org/cadence/activity"
"go.uber.org/cadence/workflow"
"github.com/uber/cadence/common/log"
"github.com/uber/cadence/common/log/tag"
"github.com/uber/cadence/common/metrics"
"github.com/uber/cadence/common/types"
)
type (
contextKey string
)
const (
processorContextKey contextKey = "processorContext"
// processorTaskListName is the tasklist name
processorTaskListName = "cadence-sys-processor-parent-close-policy"
// processorWFTypeName is the workflow type
processorWFTypeName = "cadence-sys-parent-close-policy-workflow"
processorActivityName = "cadence-sys-parent-close-policy-activity"
infiniteDuration = 20 * 365 * 24 * time.Hour
processorChannelName = "ParentClosePolicyProcessorChannelName"
)
type (
// RequestDetail defines detail of each workflow to process
RequestDetail struct {
WorkflowID string
RunID string
Policy types.ParentClosePolicy
}
// Request defines the request for parent close policy
Request struct {
Executions []RequestDetail
DomainName string
DomainUUID string
}
)
var (
retryPolicy = cadence.RetryPolicy{
InitialInterval: 10 * time.Second,
BackoffCoefficient: 1.7,
MaximumInterval: 5 * time.Minute,
ExpirationInterval: infiniteDuration,
}
activityOptions = workflow.ActivityOptions{
ScheduleToStartTimeout: time.Minute,
StartToCloseTimeout: 5 * time.Minute,
RetryPolicy: &retryPolicy,
}
)
func init() {
workflow.RegisterWithOptions(ProcessorWorkflow, workflow.RegisterOptions{Name: processorWFTypeName})
activity.RegisterWithOptions(ProcessorActivity, activity.RegisterOptions{Name: processorActivityName})
}
// ProcessorWorkflow is the workflow that performs actions for ParentClosePolicy
func ProcessorWorkflow(ctx workflow.Context) error {
requestCh := workflow.GetSignalChannel(ctx, processorChannelName)
for {
var request Request
if !requestCh.ReceiveAsync(&request) {
// no more request
break
}
opt := workflow.WithActivityOptions(ctx, activityOptions)
_ = workflow.ExecuteActivity(opt, processorActivityName, request).Get(ctx, nil)
}
return nil
}
// ProcessorActivity is activity for processing batch operation
func ProcessorActivity(ctx context.Context, request Request) error {
processor := ctx.Value(processorContextKey).(*Processor)
client := processor.clientBean.GetHistoryClient()
for _, execution := range request.Executions {
var err error
switch execution.Policy {
case types.ParentClosePolicyAbandon:
//no-op
continue
case types.ParentClosePolicyTerminate:
err = client.TerminateWorkflowExecution(nil, &types.HistoryTerminateWorkflowExecutionRequest{
DomainUUID: request.DomainUUID,
TerminateRequest: &types.TerminateWorkflowExecutionRequest{
Domain: request.DomainName,
WorkflowExecution: &types.WorkflowExecution{
WorkflowID: execution.WorkflowID,
RunID: execution.RunID,
},
Reason: "by parent close policy",
Identity: processorWFTypeName,
},
})
case types.ParentClosePolicyRequestCancel:
err = client.RequestCancelWorkflowExecution(nil, &types.HistoryRequestCancelWorkflowExecutionRequest{
DomainUUID: request.DomainUUID,
CancelRequest: &types.RequestCancelWorkflowExecutionRequest{
Domain: request.DomainName,
WorkflowExecution: &types.WorkflowExecution{
WorkflowID: execution.WorkflowID,
RunID: execution.RunID,
},
Identity: processorWFTypeName,
},
})
}
if err != nil {
switch err.(type) {
case *types.EntityNotExistsError, *types.CancellationAlreadyRequestedError:
err = nil
}
}
if err != nil {
processor.metricsClient.IncCounter(metrics.ParentClosePolicyProcessorScope, metrics.ParentClosePolicyProcessorFailures)
getActivityLogger(ctx).Error("failed to process parent close policy", tag.Error(err))
return err
}
processor.metricsClient.IncCounter(metrics.ParentClosePolicyProcessorScope, metrics.ParentClosePolicyProcessorSuccess)
}
return nil
}
func getActivityLogger(ctx context.Context) log.Logger {
processor := ctx.Value(processorContextKey).(*Processor)
wfInfo := activity.GetInfo(ctx)
return processor.logger.WithTags(
tag.WorkflowID(wfInfo.WorkflowExecution.ID),
tag.WorkflowRunID(wfInfo.WorkflowExecution.RunID),
tag.WorkflowDomainName(wfInfo.WorkflowDomain),
)
}