39 lines
1.2 KiB
C#
39 lines
1.2 KiB
C#
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using Elsa.Attributes;
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using Elsa.Models;
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using Elsa.Scripting.JavaScript.Contracts;
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namespace Elsa.Modules.JavaScript.Activities;
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[Activity("Elsa.Scripting.RunJavaScript", "Executes JavaScript code", "Scripting")]
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public class RunJavaScript : Activity
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{
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public RunJavaScript()
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{
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}
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public RunJavaScript(string script)
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{
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Script = new Input<string>(script);
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}
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public Input<string> Script { get; set; } = new("");
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public Output<object?>? Result { get; set; }
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protected override async ValueTask ExecuteAsync(ActivityExecutionContext context)
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{
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var script = context.Get(Script);
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// If no script was specified, there's nothing to do.
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if (string.IsNullOrWhiteSpace(script))
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return;
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// Get a JavaScript evaluator.
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var javaScriptEvaluator = context.GetRequiredService<IJavaScriptEvaluator>();
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// Run the script.
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var result = await javaScriptEvaluator.EvaluateAsync(script, typeof(object), context.ExpressionExecutionContext, cancellationToken: context.CancellationToken);
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// Set the result as output, if any.
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context.Set(Result, result);
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}
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}
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