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How to spawn an Activity Execution in Go

To spawn an Activity Execution, use the ExecuteActivity() API call inside your Workflow Definition. The API is available from the package.

The ExecuteActivity() API call requires an instance of workflow.Context, the Activity function name, and any variables to be passed to the Activity Execution.

import (  // ...
func YourWorkflowDefinition(ctx workflow.Context, param YourWorkflowParam) (YourWorkflowResponse, error) {  // ...  yourActivityParam := YourActivityParam{    // ...  }  var activities *YourActivityStruct  future := workflow.ExecuteActivity(ctx, activities.YourActivityDefinition, yourActivityParam)  // ...}
func (a *YourActivityStruct) YourActivityDefinition(ctx context.Context, param YourActivityParam) error {  // ...}

The Activity function name can be provided as a variable object (no quotations) or as a string.

// ...  future := workflow.ExecuteActivity(ctx, "YourActivityDefinition", yourActivityParam)// ...

The benefit of passing the actual function object is that the framework can validate the parameters against the Activity Definition.

The ExecuteActivity call returns a Future, which can be used to get the result of the Activity Execution.

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