wehub-resource-sync
108 lines
5.3 KiB
C#
108 lines
5.3 KiB
C#
// Copyright (c) Microsoft. All rights reserved.
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using System.Text.Json;
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using Microsoft.SemanticKernel;
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using Step03.Models;
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using Step03.Steps;
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namespace Step03.Processes;
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/// <summary>
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/// Sample process that showcases how to create a process with a fan in/fan out behavior and use of existing processes as steps.<br/>
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/// Visual reference of this process can be found in the <see href="https://github.com/microsoft/semantic-kernel/blob/main/dotnet/samples/GettingStartedWithProcesses/README.md#fish-and-chips-preparation-process" >diagram</see>
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/// </summary>
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public static class FishAndChipsProcess
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{
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public static class ProcessEvents
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{
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public const string PrepareFishAndChips = nameof(PrepareFishAndChips);
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public const string FishAndChipsReady = nameof(FishAndChipsReady);
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public const string FishAndChipsIngredientOutOfStock = nameof(FishAndChipsIngredientOutOfStock);
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}
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public static ProcessBuilder CreateProcess(string processName = "FishAndChipsProcess")
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{
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var processBuilder = new ProcessBuilder(processName);
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var makeFriedFishStep = processBuilder.AddStepFromProcess(FriedFishProcess.CreateProcess());
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var makePotatoFriesStep = processBuilder.AddStepFromProcess(PotatoFriesProcess.CreateProcess());
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var addCondimentsStep = processBuilder.AddStepFromType<AddFishAndChipsCondimentsStep>();
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// An additional step that is the only one that emits an public event in a process can be added to maintain event names unique
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var externalStep = processBuilder.AddStepFromType<ExternalFishAndChipsStep>();
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processBuilder
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.OnInputEvent(ProcessEvents.PrepareFishAndChips)
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.SendEventTo(makeFriedFishStep.WhereInputEventIs(FriedFishProcess.ProcessEvents.PrepareFriedFish))
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.SendEventTo(makePotatoFriesStep.WhereInputEventIs(PotatoFriesProcess.ProcessEvents.PreparePotatoFries));
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makeFriedFishStep
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.OnEvent(FriedFishProcess.ProcessEvents.FriedFishReady)
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.SendEventTo(new ProcessFunctionTargetBuilder(addCondimentsStep, parameterName: "fishActions"));
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makePotatoFriesStep
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.OnEvent(PotatoFriesProcess.ProcessEvents.PotatoFriesReady)
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.SendEventTo(new ProcessFunctionTargetBuilder(addCondimentsStep, parameterName: "potatoActions"));
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addCondimentsStep
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.OnEvent(AddFishAndChipsCondimentsStep.OutputEvents.CondimentsAdded)
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.SendEventTo(new ProcessFunctionTargetBuilder(externalStep));
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return processBuilder;
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}
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public static ProcessBuilder CreateProcessWithStatefulSteps(string processName = "FishAndChipsWithStatefulStepsProcess")
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{
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var processBuilder = new ProcessBuilder(processName);
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var makeFriedFishStep = processBuilder.AddStepFromProcess(FriedFishProcess.CreateProcessWithStatefulStepsV1());
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var makePotatoFriesStep = processBuilder.AddStepFromProcess(PotatoFriesProcess.CreateProcessWithStatefulSteps());
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var addCondimentsStep = processBuilder.AddStepFromType<AddFishAndChipsCondimentsStep>();
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// An additional step that is the only one that emits an public event in a process can be added to maintain event names unique
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var externalStep = processBuilder.AddStepFromType<ExternalFishAndChipsStep>();
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processBuilder
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.OnInputEvent(ProcessEvents.PrepareFishAndChips)
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.SendEventTo(makeFriedFishStep.WhereInputEventIs(FriedFishProcess.ProcessEvents.PrepareFriedFish))
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.SendEventTo(makePotatoFriesStep.WhereInputEventIs(PotatoFriesProcess.ProcessEvents.PreparePotatoFries));
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makeFriedFishStep
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.OnEvent(FriedFishProcess.ProcessEvents.FriedFishReady)
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.SendEventTo(new ProcessFunctionTargetBuilder(addCondimentsStep, parameterName: "fishActions"));
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makePotatoFriesStep
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.OnEvent(PotatoFriesProcess.ProcessEvents.PotatoFriesReady)
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.SendEventTo(new ProcessFunctionTargetBuilder(addCondimentsStep, parameterName: "potatoActions"));
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addCondimentsStep
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.OnEvent(AddFishAndChipsCondimentsStep.OutputEvents.CondimentsAdded)
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.SendEventTo(new ProcessFunctionTargetBuilder(externalStep));
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return processBuilder;
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}
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private sealed class AddFishAndChipsCondimentsStep : KernelProcessStep
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{
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public static class ProcessFunctions
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{
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public const string AddCondiments = nameof(AddCondiments);
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}
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public static class OutputEvents
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{
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public const string CondimentsAdded = nameof(CondimentsAdded);
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}
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[KernelFunction(ProcessFunctions.AddCondiments)]
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public async Task AddCondimentsAsync(KernelProcessStepContext context, List<string> fishActions, List<string> potatoActions)
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{
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Console.WriteLine($"ADD_CONDIMENTS: Added condiments to Fish & Chips - Fish: {JsonSerializer.Serialize(fishActions)}, Potatoes: {JsonSerializer.Serialize(potatoActions)}");
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fishActions.AddRange(potatoActions);
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fishActions.Add(FoodIngredients.Condiments.ToFriendlyString());
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await context.EmitEventAsync(new() { Id = OutputEvents.CondimentsAdded, Data = fishActions });
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}
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}
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private sealed class ExternalFishAndChipsStep : ExternalStep
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{
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public ExternalFishAndChipsStep() : base(ProcessEvents.FishAndChipsReady) { }
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}
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}
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