75 lines
3.6 KiB
C#
75 lines
3.6 KiB
C#
using System.Globalization;
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using System.Text.Json;
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using System.Text.Json.Serialization;
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using Elsa.Workflows;
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using FastEndpoints;
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using JetBrains.Annotations;
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using Microsoft.AspNetCore.Builder;
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using Microsoft.AspNetCore.Http;
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using Microsoft.AspNetCore.Routing;
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using Microsoft.Extensions.DependencyInjection;
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// ReSharper disable once CheckNamespace
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namespace Elsa.Extensions;
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/// <summary>
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/// Provides extension methods to add the FastEndpoints middleware configured for use with Elsa API endpoints.
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/// </summary>
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[PublicAPI]
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public static class WebApplicationExtensions
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{
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/// <summary>
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/// Register the FastEndpoints middleware configured for use with with Elsa API endpoints.
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/// </summary>
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/// <param name="app"></param>
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/// <param name="routePrefix">The route prefix to apply to Elsa API endpoints.</param>
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/// <example>E.g. "elsa/api" will expose endpoints like this: "/elsa/api/workflow-definitions"</example>
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public static IApplicationBuilder UseWorkflowsApi(this IApplicationBuilder app, string routePrefix = "elsa/api")
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{
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return app.UseFastEndpoints(config =>
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{
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config.Endpoints.RoutePrefix = routePrefix;
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config.Serializer.RequestDeserializer = DeserializeRequestAsync;
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config.Serializer.ResponseSerializer = SerializeRequestAsync;
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config.Binding.ValueParserFor<DateTimeOffset>(s =>
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new(DateTimeOffset.TryParse(s.ToString(), CultureInfo.InvariantCulture, DateTimeStyles.RoundtripKind, out var result), result));
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});
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}
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/// <summary>
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/// Register the FastEndpoints middleware configured for use with with Elsa API endpoints.
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/// </summary>
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/// <param name="routes">The <see cref="IEndpointRouteBuilder"/> to register the endpoints with.</param>
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/// <param name="routePrefix">The route prefix to apply to Elsa API endpoints.</param>
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/// <example>E.g. "elsa/api" will expose endpoints like this: "/elsa/api/workflow-definitions"</example>
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public static IEndpointRouteBuilder MapWorkflowsApi(this IEndpointRouteBuilder routes, string routePrefix = "elsa/api") =>
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routes.MapFastEndpoints(config =>
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{
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config.Endpoints.RoutePrefix = routePrefix;
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config.Serializer.RequestDeserializer = DeserializeRequestAsync;
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config.Serializer.ResponseSerializer = SerializeRequestAsync;
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});
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private static ValueTask<object?> DeserializeRequestAsync(HttpRequest httpRequest, Type modelType, JsonSerializerContext? serializerContext, CancellationToken cancellationToken)
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{
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var serializer = httpRequest.HttpContext.RequestServices.GetRequiredService<IApiSerializer>();
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var options = serializer.GetOptions();
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return serializerContext == null
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? JsonSerializer.DeserializeAsync(httpRequest.Body, modelType, options, cancellationToken)
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: JsonSerializer.DeserializeAsync(httpRequest.Body, modelType, serializerContext, cancellationToken);
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}
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private static Task SerializeRequestAsync(HttpResponse httpResponse, object? dto, string contentType, JsonSerializerContext? serializerContext, CancellationToken cancellationToken)
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{
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var serializer = httpResponse.HttpContext.RequestServices.GetRequiredService<IApiSerializer>();
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var options = serializer.GetOptions();
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httpResponse.ContentType = contentType;
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return serializerContext == null
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? JsonSerializer.SerializeAsync(httpResponse.Body, dto, dto?.GetType() ?? typeof(object), options, cancellationToken)
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: JsonSerializer.SerializeAsync(httpResponse.Body, dto, dto?.GetType() ?? typeof(object), serializerContext, cancellationToken);
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}
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} |