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max_buffered_event_test.go
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max_buffered_event_test.go
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// 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 host
import (
"context"
"sync"
"time"
commonpb "go.temporal.io/api/common/v1"
enumspb "go.temporal.io/api/enums/v1"
"go.temporal.io/sdk/client"
"go.temporal.io/sdk/temporal"
"go.temporal.io/sdk/workflow"
)
func (s *clientIntegrationSuite) TestMaxBufferedEventsLimit() {
/*
This test starts a workflow, and block its workflow task, then sending
signals to it which will be buffered. The default max buffered event
count limit is 100. When the test sends 101 signal, the blocked workflow
task will be forced to close.
*/
closeStartChanOnce := sync.Once{}
waitStartChan := make(chan struct{})
waitSignalChan := make(chan struct{})
localActivityFn := func(ctx context.Context) error {
// notify that workflow task has started
closeStartChanOnce.Do(func() {
close(waitStartChan)
})
// block workflow task so all signals will be buffered.
<-waitSignalChan
return nil
}
workflowFn := func(ctx workflow.Context) (int, error) {
ctx1 := workflow.WithLocalActivityOptions(ctx, workflow.LocalActivityOptions{
StartToCloseTimeout: 20 * time.Second,
RetryPolicy: &temporal.RetryPolicy{MaximumAttempts: 1},
})
f1 := workflow.ExecuteLocalActivity(ctx1, localActivityFn)
if err := f1.Get(ctx, nil); err != nil {
return 0, err
}
sigCh := workflow.GetSignalChannel(ctx, "test-signal")
sigCount := 0
for sigCh.ReceiveAsync(nil) {
sigCount++
}
return sigCount, nil
}
s.worker.RegisterWorkflow(workflowFn)
testCtx, cancel := context.WithTimeout(context.Background(), time.Second*20)
defer cancel()
wid := "test-max-buffered-events-limit"
wf1, err1 := s.sdkClient.ExecuteWorkflow(testCtx, client.StartWorkflowOptions{
ID: wid,
TaskQueue: s.taskQueue,
WorkflowTaskTimeout: time.Second * 20,
}, workflowFn)
s.NoError(err1)
// block until workflow task started
<-waitStartChan
// now send 100 signals, all of them will be buffered
for i := 0; i < 100; i++ {
err := s.sdkClient.SignalWorkflow(testCtx, wid, "", "test-signal", i)
s.NoError(err)
}
// send 101 signal, this will fail the inflight workflow task
err := s.sdkClient.SignalWorkflow(testCtx, wid, "", "test-signal", 100)
s.NoError(err)
// unblock goroutine that runs local activity
close(waitSignalChan)
var sigCount int
err = wf1.Get(testCtx, &sigCount)
s.NoError(err)
s.Equal(101, sigCount)
historyEvents := s.getHistory(s.namespace, &commonpb.WorkflowExecution{WorkflowId: wf1.GetID()})
var failedCause enumspb.WorkflowTaskFailedCause
for _, evt := range historyEvents {
if evt.GetEventType() == enumspb.EVENT_TYPE_WORKFLOW_TASK_FAILED {
failedCause = evt.GetWorkflowTaskFailedEventAttributes().Cause
break
}
}
s.Equal(enumspb.WORKFLOW_TASK_FAILED_CAUSE_FORCE_CLOSE_COMMAND, failedCause)
}