Applying Alterations

Instead of submitting alteration plans for asynchronous execution, you can apply alterations immediately using the IAlterationRunner service. For example:

var alterations = new List<IAlteration>
{
    new ModifyVariable("MyVariable", "MyValue")
},

var workflowInstanceIds = new[] { "26cf02e60d4a4be7b99a8588b7ac3bb9" };
var runner = serviceProvider.GetRequiredService<IAlterationRunner>();
var results = await runner.RunAsync(plan, cancellationToken);

When an alteration plan is run immediately, the alterations are applied synchronously, and the results are returned. You will have to manually schedule affected workflow instances to resume execution. Use the IAlteredWorkflowDispatcher:

var dispatcher = serviceProvider.GetRequiredService<IAlteredWorkflowDispatcher>();
await dispatcher.DispatchAsync(results, cancellationToken);

This will tell the workflow engine to pickup the altered workflow instances and run them.