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workflow.go
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workflow.go
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package choice
import (
"time"
"go.temporal.io/sdk/workflow"
)
const (
OrderChoiceApple = "apple"
OrderChoiceBanana = "banana"
OrderChoiceCherry = "cherry"
OrderChoiceOrange = "orange"
)
// ExclusiveChoiceWorkflow Workflow definition.
func ExclusiveChoiceWorkflow(ctx workflow.Context) error {
ao := workflow.ActivityOptions{
StartToCloseTimeout: 10 * time.Second,
}
ctx = workflow.WithActivityOptions(ctx, ao)
// Get order.
var orderActivities *OrderActivities // Used to call activities by function pointer
var orderChoice string
err := workflow.ExecuteActivity(ctx, orderActivities.GetOrder).Get(ctx, &orderChoice)
if err != nil {
return err
}
logger := workflow.GetLogger(ctx)
// choose next activity based on order result
switch orderChoice {
case OrderChoiceApple:
workflow.ExecuteActivity(ctx, orderActivities.OrderApple, orderChoice)
case OrderChoiceBanana:
workflow.ExecuteActivity(ctx, orderActivities.OrderBanana, orderChoice)
case OrderChoiceCherry:
workflow.ExecuteActivity(ctx, orderActivities.OrderCherry, orderChoice)
case OrderChoiceOrange:
// Activity can be also called by its name
workflow.ExecuteActivity(ctx, "OrderOrange", orderChoice)
default:
logger.Error("Unexpected order", "Choice", orderChoice)
}
logger.Info("Workflow completed.")
return nil
}