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concurrentExec.go
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concurrentExec.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.
package canary
import (
"context"
"go.uber.org/cadence/activity"
"go.uber.org/cadence/workflow"
"go.uber.org/zap"
)
const (
// to force cuncurrent execution of activity and pagination on history events
// we need to make this number larger than the default page size, which is 1000
numConcurrentExec = 25
totalConcurrentExec = 250
)
func init() {
registerWorkflow(concurrentExecWorkflow, wfTypeConcurrentExec)
registerActivity(concurrentExecActivity, activityTypeConcurrentExec)
}
// concurrentExecWorkflow is the workflow implementation to test
// 1. client side events pagination when reconstructing workflow state
// 2. concurrent execution of activities
func concurrentExecWorkflow(ctx workflow.Context, inputScheduledTimeNanos int64) error {
scheduledTimeNanos := getScheduledTimeFromInputIfNonZero(ctx, inputScheduledTimeNanos)
profile, err := beginWorkflow(ctx, wfTypeConcurrentExec, scheduledTimeNanos)
if err != nil {
return err
}
selector := workflow.NewSelector(ctx)
errors := make([]error, totalConcurrentExec)
doActivity := func(index int) {
now := workflow.Now(ctx).UnixNano()
activityCtx := workflow.WithActivityOptions(ctx, newActivityOptions())
future := workflow.ExecuteActivity(activityCtx, activityTypeConcurrentExec, now)
selector.AddFuture(future, func(f workflow.Future) {
// do not care about the return value
errors[index] = f.Get(activityCtx, nil)
})
}
for index := 0; index < numConcurrentExec; index++ {
doActivity(index)
}
for index := numConcurrentExec; index < totalConcurrentExec; index++ {
selector.Select(ctx)
doActivity(index)
}
for index := 0; index < numConcurrentExec; index++ {
selector.Select(ctx)
}
for _, err := range errors {
if err != nil {
workflow.GetLogger(ctx).Info("concurrentExecActivity failed", zap.Error(err))
return profile.end(err)
}
}
return profile.end(nil)
}
// concurrentExecActivity is the activity implementation for concurrent execution test
func concurrentExecActivity(ctx context.Context, scheduledTimeNanos int64) error {
scope := activity.GetMetricsScope(ctx)
var err error
scope, sw := recordActivityStart(scope, activityTypeConcurrentExec, scheduledTimeNanos)
defer recordActivityEnd(scope, sw, err)
// canary test do not require any actual work to be done, so just return
return nil
}