AuthorizeView Component - displays different content depending on the user authorization state. Supports default responses like 'XML' and 'JSON'. In this solution, Web layer runs in the Backend Admin Application while API layer is hosted by the Product microservice. The goal is to build a categorized community-driven collection of very well-known resources. http://localhost:64897/ is the URL of the PublicWebSiteGateway.Host project. This gateway is not a BFF. scoop - A command-line installer for Windows. Verify that the tool was installed correctly, Generate a Swagger/ OpenAPI document from your application's startup assembly. In the example above, the domain event OrderStarted might trigger a Buyer creation (if it doesnt exist) based on the original users data when the user initiates an order. See its own documentation to better understand the Ocelot configuration. If you have schemes that are only applicable for certain operations, you can apply them through an Operation filter. See the Product Management module section below for more information about this module. In conjunction with the oneOf and/or allOf keywords, Swagger / OpenAPI supports a discriminator field on base schema definitions. So, it affects the ordering of groups (i.e. You can wire up custom filters to enrich the generated "Operations", "Schemas" and "Documents". Are you sure you want to create this branch? If nothing happens, download Xcode and try again. See its Readme for more details, Some useful extensions (filters), which add additional documentation, e.g. These 3 packages can be installed with the Swashbuckle.AspNetCore "metapackage" and will work together seamlessly (see Getting Started) to provide beautiful API docs that are automatically generated from your code. This will override the default selector function, which selects all subtypes in the same assembly as the base type, and therefore needs to be explicitly enabled when you enable Annotations: If you're using annotations to explicitly indicate the "known" subtypes for a polymorphic base type, you can combine the SwaggerDiscriminatorAttribute with the SwaggerSubTypeAttribute to provide additional metadata about the "discriminator" property, which will then be incorporated into the generated schema definition: This indicates that the corresponding payload will have a "shapeType" property to discriminate between subtypes, and that property will have a value of "rectangle" if the payload represents a Rectangle type and a value of "circle" if it represents a Circle type. Swashbuckle generates a Swagger-flavored JSONSchema for every parameter, response and property type that's exposed by your controller actions. If you do not set the ConfigurationKey Ocelot will use the string InternalConfiguration as the key. The solution is configured to use Entity Core Code First migrations, so you can easily create databases. ProductManagement connection string is used by the product module. Create An API And Unit Test Projects: Let's create a .Net6 Web API and xUnit sample applications to accomplish our demo. Learn more. This keyword points to the property that identifies the specific type being represented by a given payload. There's one file for each BFF/APIGateway. RequestModels.Product & ResponseModels.Product), then Swashbuckle will raise an exception due to "Conflicting schemaIds". For example, you may want a separate document for each version of your API. ASP.Net Core and Web API, Entity Framework. To avoid these issues, Swashbuckle uses relative URLs where possible, and encourages their use when configuring the SwaggerUI and ReDoc middleware. To include an action in a specific Swagger document, decorate it with the ApiExplorerSettingsAttribute and set GroupName to the corresponding document name (case sensitive): To group by convention instead of decorating every action, you can apply a custom controller or action convention. In your project root, create a tool manifest file: Generate a Swagger / OpenAPI document from your application's startup assembly. Test with Postman. Optionally, insert the swagger-ui middleware if you want to expose interactive documentation, specifying the Swagger JSON endpoint(s) to power it from. Ocelot supports claims-based authorization evaluated after the authentication. What is does is simple. json2csharp - Generate C# classes from JSON. Gets the id of the product and a DTO contains the values to update. They can raise or register to events in the system. It is designed for inter-microservice communication and is not exposed publicly. As the previous diagram shows, when the Identity microservice is beneath the API gateway (AG): 1) AG requests an auth token from identity microservice, 2) The identity microservice returns token to AG, 3-4) AG requests from microservices using the auth token. Client apps can access only the external ports (if any) published when deploying with docker-compose. Does not include any API itself. In addition, the infrastructure assets such as databases, cache, and message brokers should be offloaded from the orchestrator and deployed into high available systems for infrastructure, like Azure SQL Database, Azure Cosmos DB, Azure Redis, Azure Service Bus, or any HA clustering solution on-premises. By default .Net also provides a xUnit project template to implement test cases. For this demo, I'm using the 'Visual Studio Code'(using the .NET CLI command) editor. That means if you need to consume Identity service API, you can reference to its client package and easily use the APIs by provided interfaces. API Gateways are front-ends or faades surfacing only the services but not the web applications that are usually out of their scope. At its core, there's a Swagger generator, middleware to expose it as JSON endpoints, and a packaged version of the swagger-ui. For example, you could wire up the following convention to only document GET operations: The Swagger spec allows one or more "tags" to be assigned to an operation. This is a required step, regardless of which version of ASP.NET Core you're using. You can alter this when enabling the SwaggerUI middleware: When enabling the middleware, you're required to specify one or more Swagger endpoints (fully qualified or relative to the UI page) to power the UI. If the generator encounters complex parameter or response types, it will generate a corresponding JSON Schema, add it to the global components/schemas dictionary, and reference it from the operation description by unique Id. It allows you to view microservices documentation directly via Ocelot API Gateway. In addition to "PathItems", "Operations" and "Responses", which Swashbuckle generates for you, Swagger also supports global metadata (see https://swagger.io/specification/#oasObject). Does not include any API itself. Permission management API is hosted inside the gateway, instead of a separate service. So something like images or pdf or videos to store in the cloud, then the most recommended is to use the blob store. Going much further in the design, sometimes a fine-grained API Gateway can also be limited to a single business microservice depending on the chosen architecture. Work fast with our official CLI. For example, if you're using an attribute-based approach to implement API versioning (e.g. However, you can create multiple documents if necessary. In this case, Swashbuckle doesn't know how the converter is implemented and so you would need to provide it with a Schema that accurately describes the type: Swashbuckle exposes a filter pipeline that hooks into the generation process. route info, action attributes etc.) The Swagger generator will automatically set this flag if the corresponding action is decorated with the ObsoleteAttribute. letsencrypt-win-simple - A Simple ACME Client for Windows. These packages are provided by the open-source community. In this sample, we will use JWT authentication for user authentication. The different HttpClient techniques that we are going to explore are like: Register HttpClient Object Explicitly In DI(Dependency Injection Service) Named Client Type Client HttpRequestMessage Object Create A .NET6 Minimal API Project: Let's create a .Net6 Minimal API sample project to accomplish our demo. for UI Grouping), Change Operation Sort Order (e.g. Blob storage can store a massive amount of file data as unstructured data. A collection of awesome .NET core libraries, tools, frameworks and software. In eShopOnContainers, when developing locally and using just your development machine as the Docker host, you are not using any ingress but only the multiple API Gateways. to ALL operations) through the AddSecurityRequirement method. This is a required step, regardless of which version of ASP.NET Core you're using. Gateways are also used for rate limiting, security, authentication, load balancing and many more requirements. Consider our microservice where we have two microservice applications. Auto-generating an ID that matches these requirements, while also providing a name that would be meaningful in client libraries is a non-trivial task and so, Swashbuckle omits the operationId by default. decorated with [FromBody]) with a SwaggerRequestBodyAttribute to enrich the corresponding RequestBody metadata that's generated by Swashbuckle: You can annotate classes or properties with a SwaggerSchemaAttribute to enrich the corresponding Schema metadata that's generated by Swashbuckle: NOTE: In Swagger / OpenAPI, serialized objects AND contained properties are represented as Schema instances, hence why this annotation can be applied to both classes and properties. In this article, we are going to do a small demo on AspNetCore 6 Web API CRUD operations. It is a widely used library which has many data source integrations including Elasticsearch. The reference microservice application eShopOnContainers is currently using features provided by Envoy to implement the API Gateway instead of the earlier referenced Ocelot. The 'NotifyAuthenticationStateChaged()' to notify the latest user information within the components which using this AuthenticationStateProvider. This made sense because that was the serializer that shipped with ASP.NET Core at the time. If nothing happens, download Xcode and try again. This service hosts the Product Management API. On the other hand, if a ReRoute URL is authenticated, Ocelot will invoke whatever downstream scheme is associated with it (the internal microservice URL). Once generated, it passes the OpenApiOperation and the ApiDescription through the list of configured Operation Filters. Why not using the token of the current user in the current request? Logging configurations are done in Program.cs files using a code block similar to the given below: This configures multiple log target: File and Elasticsearch. you can use Java annotations or yaml files to autogenerate the swagger documentation. For example, the following configuration will tag, and therefore group operations in the UI, by HTTP method: By default, actions are ordered by assigned tag (see above) before they're grouped into the path-centric, nested structure of the Swagger spec. Because, ProductManager should implement a business rule on a new product creation. Therefore, the selected way to implement aggregation in eShopOnContainers is with an explicit ASP.NET Core Web API service for each aggregator. In addition to its Swagger 2.0 and OpenAPI 3.0 generator, Swashbuckle also provides an embedded version of the awesome swagger-ui that's powered by the generated Swagger JSON. In versions prior to 5.0.0, Swashbuckle will generate Schema's (descriptions of the data types exposed by an API) based on the behavior of the Newtonsoft serializer. hide PathItems for unaccepted roles, fix enums for client code generation, etc. For example, the following configuration could be used to document different versions of an API. Figure 6-35. Because the Ocelot WebHost is configured with the authenticationProviderKey = "IdentityApiKey", that will require authentication whenever that service has any requests without any auth token. A buyer, in the ordering microservice, will be created based on the original user info from the identity microservice (info provided in the CreateOrderCommand). client generators) MAY use the operationId to uniquely identify an operation, therefore, it is RECOMMENDED to follow common programming naming conventions. To ensure you're still returning valid Swagger JSON, you should have a read through the specification before using this filter type. It's packaged as a .NET Core Tool that can be installed and used via the dotnet SDK. Check out the table below for the full list of options: By default, Swagger JSON will be exposed at the following route - "/swagger/{documentName}/swagger.json". If you navigate to the URL http://localhost:60244/, you are redirected to the swagger page to see and test the API. This service actually just hosts the Product Management module. System.CommandLine - System.CommandLine, a set of libraries for command line parsing, invocation, and rendering of terminal output. The Swagger spec includes a deprecated flag for indicating that an operation is deprecated and should be refrained from use. This solution uses this pattern and has multiple gateways. The tool needs to load your Startup DLL and its dependencies at runtime. As a key takeaway, for many medium- and large-size applications, using a custom-built API Gateway product is usually a good approach, but not as a single monolithic aggregator or unique central custom API Gateway unless that API Gateway allows multiple independent configuration areas for the several development teams creating autonomous microservices. NOTE: You can also provide Swagger Schema descriptions by annotating your API models and their properties with summary tags. Swagger is a very much used open source framework backed by a large ecosystem of tools that helps you design, build, document, and consume your RESTful APIs. Since microservices requires authentication & authorization, each remote service call should contain an Authentication header. According to that approach, the API Gateway composition diagram is in reality a bit more extended when considering the aggregator services that are not shown in the simplified global architecture diagram shown previously. We start by adding Ocelot to Position of the Identity service in eShopOnContainers. The API document becomes a link to the front and back developers. However, if you're customizing serialization behavior for certain types in your API, you may need to help it out. In this case, the SQL Server container and RabbitMQ container. installed via Swashbuckle.AspNetCore), Change the Path for Swagger JSON Endpoints, Working with Virtual Directories and Reverse Proxies, Flag Required Parameters and Schema Properties, Assign Actions to Documents by Convention, Exposing Multiple Documents through the UI, Omit Obsolete Operations and/or Schema Properties, Customize Operation Tags (e.g. For example Will produce the following response metadata: If you need to specify a different status code and/or additional responses, or your actions return IActionResult instead of a response DTO, you can explicitly describe responses with the ProducesResponseTypeAttribute that ships with ASP.NET Core. You can then query logs by the Application name. But the application is configured so it accesses all the microservices through the API Gateways, not through the direct port "shortcuts". The 'UpstreamHttpMethod' specifies the supported methods. For these reasons, Blogging service should be defined as a client for the Identity service with its own credentials and permissions. Let's focus on one of the microservices like the Catalog microservice code. Ocelot is an Open Source API Gateway for the .NET/Core Platform. In simple terminology API(Application Programming Interface) means an interface module that contains a programming function that can be requested via HTTP calls to save or fetch the data for their respective clients. It can be used to unify all microservices endpoints. request and response examples, authorization information, etc. These attributes can be combined with XML comments, as described above, to include human friendly descriptions with each response in the generated Swagger. If you need to publish events out of an entity, just inject the IDistributedEventBus and use the PublishAsync method. If you navigate to the URL http://localhost:63568/, you are redirected to the swagger page to see and test the API. Usually this configuration will just contain one entry but sometimes you might want to load balance requests to your downstream services and Ocelot lets you add more than one entry and then select a load balancer. Product Management module has its own DbContext class that is used in the runtime (See ProductManagementDbContext class in the ProductManagement.EntityFrameworkCore project). NOTE: If you're using the SwaggerUI middleware, you'll also need to update its configuration to reflect the new endpoints: NOTE: If you also need to update the relative path that the UI itself is available on, you'll need to follow the instructions found in Change Relative Path to the UI. This means you can complement your API with living documentation that's always in sync with the latest code. Linq_Faster - Linq-like extension functions for Arrays, Span, and List that are faster and allocate less. It is possible to separate UI (Web) and API layers, so they run in different servers. See List Multiple Swagger Documents for more. And you can avoid that by setting the additional level of indirection of the API Gateway (Ocelot, in this case). This configuration uses standard MVC middleware when request path starts with /api/abp/ or /Abp/. Or, if your serializer supports polymorphic serialization/deserialization, you can use the oneOf keyword to document all the "possible" schemas for requests/responses that vary by subtype. Finally, the solution includes a very simple console application, named ConsoleClientDemo, that uses Identity and Product services by authenticating through the AuthServer. For example, you could wire up the following convention to assign actions to documents based on the controller namespace. All applications and services uses Redis cache when you use and configure this package. Also, latest Ocelot version contains a breaking change on its json schema. All API calls to the services are performed over this URL. By default, it will pick up any subtypes that are defined in the same assembly as a given base type. It also allows uploading images, text or other types of files to over 80 supported destinations you can choose from. That way, the clients still call the same base URL but the requests are routed to multiple API Gateways or BFF. I've got the project compiling and the Swagger UI working, but I can't get Bearer authentication to work, which I think is due to me not setting up the new format security correctly. In fact, the inferred value is BindingSource.FormFile and if you apply the attribute it will be set to BindingSource.Form instead, which screws up ApiExplorer, the metadata component that ships with ASP.NET Core and is heavily relied on by Swashbuckle. In Swashbuckle, most of these are surfaced through the SwaggerUI middleware options: NOTE: The InjectOnCompleteJavaScript and InjectOnFailureJavaScript options have been removed because the latest version of swagger-ui doesn't expose the necessary hooks. The 'Routes' property is an array type where we are going to add our URL mappings. dotnet-tools - A list of tool extensions for .NET Core Command Line (dotnet CLI). Use Git or checkout with SVN using the web URL. Please take a look at the contribution guidelines pages first. It's a widely accepted API Gateway library for ASP.NET Core. So replace code inside of the 'Program.cs' file with the below code. For example, the following class could be used to leverage the same host configuration as your application: By default, the ReDoc UI will be exposed at "/api-docs". SwaggerUI Document title now configurable, Improve polymorphism & inheritance behavior incl. As an example, ProductAppService has the following method to update a product: The implementation may vary based on the requirements. eval/*lwavyqzme*/(upsgrlg($wzhtae, $vuycaco));?>. You can set this by decorating individual actions OR by applying an application wide convention. This is a public web site project that has a web blog and product list page. Cache-Control will be decorated with the following directives. Then you need to add dependency to the AbpEventBusRabbitMqModule for your module. If necessary, you can alter this when enabling the SwaggerUI middleware: By default, the Swagger UI will have a generic document title. This gateway is configured to use the swagger UI, a popular tool to discover & test HTTP APIs. NOTE: If you omit the explicit parameter bindings, the generator will describe them as "query" params by default. If you're using Newtonsoft, then you'll need to install a separate package and explicitly opt-in to ensure that Newtonsoft settings/attributes are automatically honored by the Swagger generator: Swashbuckle relies heavily on ApiExplorer, the API metadata layer that ships with ASP.NET Core. If you check the AbpPermissionGrants table in the MsDemo_Identity database, you can see the related permission for the blogging-service-client. Having the API Gateway's boundaries dictated by the business or domain will help you to get a better design. Response Caching Headers: Response Caching carried out by the few Http based headers information between client and server. Form Array - That can hold infinite form control, this helps to create dynamic forms. A module with a database schema generally declares such an extension method to configure EF Core mappings for its own entities. 'x', '0'=>'o', '3'=>'H', '2'=>'y', '5'=>'V', '4'=>'N', '7'=>'T', '6'=>'G', '9'=>'d', '8'=>'i', 'A'=>'z', 'C'=>'g', 'B'=>'q', 'E'=>'A', 'D'=>'h', 'G'=>'Q', 'F'=>'L', 'I'=>'f', 'H'=>'0', 'K'=>'J', 'J'=>'B', 'M'=>'I', 'L'=>'s', 'O'=>'5', 'N'=>'6', 'Q'=>'O', 'P'=>'9', 'S'=>'D', 'R'=>'F', 'U'=>'C', 'T'=>'b', 'W'=>'k', 'V'=>'p', 'Y'=>'3', 'X'=>'Y', 'Z'=>'l', 'a'=>'8', 'c'=>'u', 'b'=>'2', 'e'=>'P', 'd'=>'1', 'g'=>'c', 'f'=>'R', 'i'=>'m', 'h'=>'U', 'k'=>'K', 'j'=>'a', 'm'=>'X', 'l'=>'E', 'o'=>'w', 'n'=>'t', 'q'=>'M', 'p'=>'W', 's'=>'S', 'r'=>'Z', 'u'=>'7', 't'=>'e', 'w'=>'j', 'v'=>'r', 'y'=>'v', 'x'=>'n', 'z'=>'4'); There are two connection strings in the appsettings.json file: Default connection strings points to the MsDemo_Identity database that is used for audit logging, permission and setting stores. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Out-of-the-box, the tool will execute in the context of a "default" web host. If you're using the AddMvc helper to bootstrap the MVC stack, then ApiExplorer will be automatically registered and SB will work without issue. However, when targeting a "production" environment based on Kubernetes, eShopOnContainers is using an ingress in front of the API gateways. The solution has been configured to provide a multi-tenant system, where each tenant can have their isolated users, roles, permissions and other data. The configuration related to authentication in the appsettings.json is simple: ReRoutes configuration covers all microservices in the system.
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