MicroElements.Swashbuckle.NodaTime

Allows configure Asp.Net Core and swagger to use NodaTime types.

Latest Builds, Packages

Installation

Package Reference:

dotnet add package microelements.swashbuckle.nodatime

Getting started

• Add package reference to MicroElements.Swashbuckle.NodaTime
• Configure asp net core to use swagger
• Configure JsonSerializer to properly serialize NodaTime types. see AddJsonFormatters or AddJsonOptions
• Configure AddSwaggerGen with ConfigureForNodaTime

Benefits of MicroElements.Swashbuckle.NodaTime

• Supports Swashbuckle 5, net core 3 and brand new System.Text.Json
• Implemented in c#, no FSharp.Core lib in dependencies
• JsonSerializerSettings ContractResolver uses for NamingStrategy, so you can use DefaultNamingStrategy, CamelCaseNamingStrategy or SnakeCaseNamingStrategy
• Supports new DateInterval (use NodaTime.Serialization.JsonNet >= 2.1.0)

Sample

Full sample see in samples: https://github.com/micro-elements/MicroElements.Swashbuckle.NodaTime/tree/master/samples/WebApiSample

public class Startup
{
    enum JsonProvider
    {
        NewtonsoftJson,
        SystemTextJson
    }

    // JsonProvider
    private static JsonProvider useJsonProvider = JsonProvider.SystemTextJson;

    // USING NewtonsoftJson settings as PropertyNamingPolicy for System.Text.Json
    private static bool useNewtonsoftJsonAsNamingPolicy = true;

    // This method gets called by the runtime. Use this method to add services to the container.
    public void ConfigureServices(IServiceCollection services)
    {
        void ConfigureNewtonsoftJsonSerializerSettings(JsonSerializerSettings serializerSettings)
        {
            // Use DefaultContractResolver or CamelCasePropertyNamesContractResolver;
            // serializerSettings.ContractResolver = new CamelCasePropertyNamesContractResolver();
            serializerSettings.ContractResolver = new DefaultContractResolver()
            {
                //NamingStrategy = new DefaultNamingStrategy()
                //NamingStrategy = new CamelCaseNamingStrategy()
                //NamingStrategy = new SnakeCaseNamingStrategy()
                NamingStrategy = new CamelCaseNamingStrategy()
            };

            // Configures JsonSerializer to properly serialize NodaTime types.
            serializerSettings.ConfigureForNodaTime(DateTimeZoneProviders.Tzdb);
        }

        void ConfigureSystemTextJsonSerializerSettings(JsonSerializerOptions serializerOptions)
        {
            if (useNewtonsoftJsonAsNamingPolicy)
            {
                // USING NewtonsoftJson settings as PropertyNamingPolicy for System.Text.Json
                JsonSerializerSettings jsonSerializerSettings = new JsonSerializerSettings();
                ConfigureNewtonsoftJsonSerializerSettings(jsonSerializerSettings);
                serializerOptions.PropertyNamingPolicy = new NewtonsoftJsonNamingPolicy(jsonSerializerSettings);
            }

            // Configures JsonSerializer to properly serialize NodaTime types.
            serializerOptions.ConfigureForNodaTime(DateTimeZoneProviders.Tzdb);

            serializerOptions.Encoder = JavaScriptEncoder.UnsafeRelaxedJsonEscaping;
        }

        if (useJsonProvider == JsonProvider.NewtonsoftJson)
        {
            services
                .AddMvcCore()
                .AddApiExplorer()
                .AddNewtonsoftJson(options => ConfigureNewtonsoftJsonSerializerSettings(options.SerializerSettings, shouldGenerateExamples: true));
        }

        if (useJsonProvider == JsonProvider.SystemTextJson)
        {
            services
                .AddMvcCore()
                .AddApiExplorer()
                .AddJsonOptions(options => ConfigureSystemTextJsonSerializerSettings(options.JsonSerializerOptions, shouldGenerateExamples: true))
                ;
        }

        //services.AddTransient<IConfigureOptions<JsonOptions>, ConfigureNewtonsoftJsonJsonNamingPolicy>();

        // Adds swagger
        services.AddSwaggerGen(c =>
        {
            c.SwaggerDoc("v1", new OpenApiInfo { Title = "My API", Version = "v1" });

            if (useJsonProvider == JsonProvider.NewtonsoftJson)
            {
                // Configures swagger to use NodaTime with serializerSettings.
                c.ConfigureForNodaTime(configureSerializerSettings: ConfigureNewtonsoftJsonSerializerSettings);
            }

            if (useJsonProvider == JsonProvider.SystemTextJson)
            {
                JsonSerializerOptions jsonSerializerOptions = new JsonSerializerOptions();
                ConfigureSystemTextJsonSerializerSettings(jsonSerializerOptions);
                c.ConfigureForNodaTimeWithSystemTextJson(jsonSerializerOptions);
            }
        });
    }

    // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
    public void Configure(IApplicationBuilder app)
    {
        app.UseSwagger();
        app.UseRouting();
        app.UseEndpoints(endpoints => { endpoints.MapControllers(); });

        // Adds swagger UI
        app.UseSwaggerUI(c =>
        {
            c.SwaggerEndpoint("/swagger/v1/swagger.json", "My API V1");
        });
    }
}

public class NewtonsoftJsonNamingPolicy : JsonNamingPolicy
{
    private readonly JsonSerializerSettings _jsonSerializerSettings;

    /// <inheritdoc />
    public NewtonsoftJsonNamingPolicy(JsonSerializerSettings jsonSerializerSettings)
    {
        _jsonSerializerSettings = jsonSerializerSettings;
    }

    /// <inheritdoc />
    public override string ConvertName(string name)
    {
        var contractResolver = _jsonSerializerSettings.ContractResolver;
        return (contractResolver as DefaultContractResolver)?.GetResolvedPropertyName(name) ?? name;
    }
}

How it works

1. MicroElements.Swashbuckle.NodaTime creates Schemas for all NodaTime types
2. MicroElements.Swashbuckle.NodaTime configures JsonSerializer for examples
3. Maps types to ISO 8601

Screenshots

Without MicroElements.Swashbuckle.NodaTime

With MicroElements.Swashbuckle.NodaTime

With MicroElements.Swashbuckle.NodaTime (camelCase)

Build

Windows: Run build.ps1

Linux: Run build.sh

License

This project is licensed under the MIT license. See the LICENSE file for more info.