Refitter is a CLI tool for generating a C# REST API Client using the Refit library. Refitter can generate the Refit interface from OpenAPI specifications. Refitter could format the generated Refit interface to be managed by Apizr (v6+) and generate some registration helpers too.
Installation
The tool is packaged as a .NET Tool and is published to nuget.org. You can install the latest version of this tool like this:
dotnet tool install --global Refitter
Usage
refitter --helpUSAGE:
refitter [URL or input file] [OPTIONS]
EXAMPLES:
refitter ./openapi.json
refitter https://petstore3.swagger.io/api/v3/openapi.yaml
refitter ./openapi.json --settings-file ./openapi.refitter --output ./GeneratedCode.cs
refitter ./openapi.json --namespace "Your.Namespace.Of.Choice.GeneratedCode" --output ./GeneratedCode.cs
refitter ./openapi.json --namespace "Your.Namespace.Of.Choice.GeneratedCode" --internal
refitter ./openapi.json --output ./IGeneratedCode.cs --interface-only
refitter ./openapi.json --output ./GeneratedContracts.cs --contract-only
refitter ./openapi.json --use-api-response
refitter ./openapi.json --cancellation-tokens
refitter ./openapi.json --no-operation-headers
refitter ./openapi.json --no-accept-headers
refitter ./openapi.json --use-iso-date-format
refitter ./openapi.json --additional-namespace "Your.Additional.Namespace" --additional-namespace "Your.Other.Additional.Namespace"
refitter ./openapi.json --multiple-interfaces ByEndpoint
refitter ./openapi.json --tag Pet --tag Store --tag User
refitter ./openapi.json --match-path '^/pet/.*'
refitter ./openapi.json --trim-unused-schema
refitter ./openapi.json --trim-unused-schema --keep-schema '^Model$' --keep-schema '^Person.+'
refitter ./openapi.json --no-deprecated-operations
refitter ./openapi.json --operation-name-template '{operationName}Async'
refitter ./openapi.json --optional-nullable-parameters
refitter ./openapi.json --use-polymorphic-serialization
ARGUMENTS:
[URL or input file] URL or file path to OpenAPI Specification file
OPTIONS:
DEFAULT
-h, --help Prints help information
-v, --version Prints version information
-s, --settings-file Path to .refitter settings file. Specifying this will ignore all other settings (except for --output)
-n, --namespace GeneratedCode Default namespace to use for generated types
--contracts-namespace Default namespace to use for generated contracts
-o, --output Output.cs Path to Output file or folder (if multiple files are generated)
--contracts-output Output path for generated contracts. Enabling this automatically enables generating multiple files
--no-auto-generated-header Don't add <auto-generated> header to output file
--no-accept-headers Don't add <Accept> header to output file
--interface-only Don't generate contract types
--contract-only Don't generate clients
--use-api-response Return Task<IApiResponse<T>> instead of Task<T>
--use-observable-response Return IObservable instead of Task
--internal Set the accessibility of the generated types to 'internal'
--cancellation-tokens Use cancellation tokens
--no-operation-headers Don't generate operation headers
--no-logging Don't log errors or collect telemetry
--additional-namespace Add additional namespace to generated types
--exclude-namespace Exclude namespace on generated types
--use-iso-date-format Explicitly format date query string parameters in ISO 8601 standard date format using delimiters (2023-06-15)
--multiple-interfaces Generate a Refit interface for each endpoint. May be one of ByEndpoint, ByTag
--multiple-files Generate multiple files instead of a single large file.
The output files can be the following:
- RefitInterfaces.cs
- DependencyInjection.cs
- Contracts.cs
--match-path Only include Paths that match the provided regular expression. May be set multiple times
--tag Only include Endpoints that contain this tag. May be set multiple times and result in OR'ed evaluation
--skip-validation Skip validation of the OpenAPI specification
--no-deprecated-operations Don't generate deprecated operations
--operation-name-template Generate operation names using pattern. When using --multiple-interfaces ByEndpoint, this is name of the Execute() method in the interface
--optional-nullable-parameters Generate nullable parameters as optional parameters
--trim-unused-schema Removes unreferenced components schema to keep the generated output to a minimum
--keep-schema Force to keep matching schema, uses regular expressions. Use together with "--trim-unused-schema". Can be set multiple times
--include-inheritance-hierarchy Keep all possible inherited types/union types even if they are not directly used
--no-banner Don't show donation banner
--skip-default-additional-properties Set to true to skip default additional properties
--operation-name-generator Default The NSwag IOperationNameGenerator implementation to use.
May be one of:
- Default
- MultipleClientsFromOperationId
- MultipleClientsFromPathSegments
- MultipleClientsFromFirstTagAndOperationId
- MultipleClientsFromFirstTagAndOperationName
- MultipleClientsFromFirstTagAndPathSegments
- SingleClientFromOperationId
- SingleClientFromPathSegments
See https://refitter.github.io/api/Refitter.Core.OperationNameGeneratorTypes.html for more information
--immutable-records Generate contracts as immutable records instead of classes
--use-apizr Use Apizr by:
- Adding a final IApizrRequestOptions options parameter to all generated methods
- Providing cancellation tokens by Apizr request options instead of a dedicated parameter
- Using method overloads instead of optional parameters
See https://refitter.github.io for more information and https://www.apizr.net to get started with Apizr
--use-dynamic-querystring-parameters Enable wrapping multiple query parameters into a single complex one. Default is no wrapping.
See https://github.com/reactiveui/refit?tab=readme-ov-file#dynamic-querystring-parameters for more information
--use-polymorphic-serialization Use System.Text.Json polymorphic serialization.
Replaces NSwag JsonInheritanceConverter attributes with System.Text.Json JsonPolymorphicAttributes.
To have the native support of inheritance (de)serialization and fallback to base types when
payloads with (yet) unknown types are offered by newer versions of an API
See https://learn.microsoft.com/en-us/dotnet/standard/serialization/system-text-json/polymorphism for more information
--disposable Generate refit clients that implement IDisposable
openApiPath - points to the OpenAPI Specifications file. This can be the path to a file stored on disk, relative to the .refitter file. This can also be a URL to a remote file that will be downloaded over HTTP/HTTPS
namespace - the namespace used in the generated code. If not specified, this defaults to GeneratedCode
naming.useOpenApiTitle - a boolean indicating whether the OpenApi title should be used. Default is true
naming.interfaceName - the name of the generated interface. The generated code will automatically prefix this with I so if this set to MyApiClient then the generated interface is called IMyApiClient. Default is ApiClient
generateContracts - a boolean indicating whether contracts should be generated. A use case for this is several API clients use the same contracts. Default is true
generateXmlDocCodeComments - a boolean indicating whether XML doc comments should be generated. Default is true
addAutoGeneratedHeader - a boolean indicating whether XML doc comments should be generated. Default is true
addAcceptHeaders - a boolean indicating whether to add accept headers [Headers("Accept: application/json")]. Default is true
returnIApiResponse - a boolean indicating whether to return IApiResponse<T> objects. Default is false
responseTypeOverride - a dictionary with operation ids (as specified in the OpenAPI document) and a particular return type to use. The types are wrapped in a task, but otherwise unmodified (so make sure to specify or import their namespaces). Default is {}
generateOperationHeaders - a boolean indicating whether to use operation headers in the generated methods. Default is true
typeAccessibility - the generated type accessibility. Possible values are Public and Internal. Default is Public
useCancellationTokens - Use cancellation tokens in the generated methods. Default is false
useIsoDateFormat - Set to true to explicitly format date query string parameters in ISO 8601 standard date format using delimiters (for example: 2023-06-15). Default is false
multipleInterfaces - Set to ByEndpoint to generate an interface for each endpoint, or ByTag to group Endpoints by their Tag (like SwaggerUI groups them).
outputFolder - a string describing a relative path to a desired output folder. Default is ./Generated
outputFilename - Output filename. Default is Output.cs when used from the CLI tool, otherwise its the .refitter filename. So Petstore.refitter becomes Petstore.cs.
additionalNamespaces - A collection of additional namespaces to include in the generated file. A use case for this is when you want to reuse contracts from a different namespace than the generated code. Default is empty
excludeNamespaces - A collection of regular expressions to exclude namespaces from the generated file. A use case for this is when your project has global usings where these namespaces would be redundant. Default is empty
includeTags - A collection of tags to use a filter for including endpoints that contain this tag.
includePathMatches - A collection of regular expressions used to filter paths.
generateDeprecatedOperations - a boolean indicating whether deprecated operations should be generated or skipped. Default is true
operationNameTemplate - Generate operation names using pattern. This must contain the string {operationName}. An example usage of this could be {operationName}Async to suffix all method names with Async
optionalParameters - Generate non-required parameters as nullable optional parameters
trimUnusedSchema - Removes unreferenced components schema to keep the generated output to a minimum
keepSchemaPatterns: A collection of regular expressions to force to keep matching schema. This is used together with trimUnusedSchema
generateDefaultAdditionalProperties: Set to false to skip default additional properties. Default is true
using Refit;
using System.Collections.Generic;
using System.Text.Json.Serialization;
using System.Threading.Tasks;
namespace Your.Namespace.Of.Choice.GeneratedCode
{
[System.CodeDom.Compiler.GeneratedCode("Refitter", "1.0.0.0")]
public partial interface ISwaggerPetstore
{
/// <summary>Update an existing pet</summary>
/// <remarks>Update an existing pet by Id</remarks>
/// <param name="body">Update an existent pet in the store</param>
/// <returns>Successful operation</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>400</term>
/// <description>Invalid ID supplied</description>
/// </item>
/// <item>
/// <term>404</term>
/// <description>Pet not found</description>
/// </item>
/// <item>
/// <term>405</term>
/// <description>Validation exception</description>
/// </item>
/// </list>
/// </exception>
[Headers("Accept: application/xml, application/json")]
[Put("/pet")]
Task<Pet> UpdatePet([Body] Pet body);
/// <summary>Add a new pet to the store</summary>
/// <remarks>Add a new pet to the store</remarks>
/// <param name="body">Create a new pet in the store</param>
/// <returns>Successful operation</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>405</term>
/// <description>Invalid input</description>
/// </item>
/// </list>
/// </exception>
[Headers("Accept: application/xml, application/json")]
[Post("/pet")]
Task<Pet> AddPet([Body] Pet body);
/// <summary>Finds Pets by status</summary>
/// <remarks>Multiple status values can be provided with comma separated strings</remarks>
/// <param name="status">Status values that need to be considered for filter</param>
/// <returns>successful operation</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>400</term>
/// <description>Invalid status value</description>
/// </item>
/// </list>
/// </exception>
[Headers("Accept: application/json")]
[Get("/pet/findByStatus")]
Task<ICollection<Pet>> FindPetsByStatus([Query] Status? status);
/// <summary>Finds Pets by tags</summary>
/// <remarks>Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.</remarks>
/// <param name="tags">Tags to filter by</param>
/// <returns>successful operation</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>400</term>
/// <description>Invalid tag value</description>
/// </item>
/// </list>
/// </exception>
[Headers("Accept: application/json")]
[Get("/pet/findByTags")]
Task<ICollection<Pet>> FindPetsByTags([Query(CollectionFormat.Multi)] IEnumerable<string> tags);
/// <summary>Find pet by ID</summary>
/// <remarks>Returns a single pet</remarks>
/// <param name="petId">ID of pet to return</param>
/// <returns>successful operation</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>400</term>
/// <description>Invalid ID supplied</description>
/// </item>
/// <item>
/// <term>404</term>
/// <description>Pet not found</description>
/// </item>
/// </list>
/// </exception>
[Headers("Accept: application/xml, application/json")]
[Get("/pet/{petId}")]
Task<Pet> GetPetById(long petId);
/// <summary>Updates a pet in the store with form data</summary>
/// <param name="petId">ID of pet that needs to be updated</param>
/// <param name="name">Name of pet that needs to be updated</param>
/// <param name="status">Status of pet that needs to be updated</param>
/// <returns>A <see cref="Task"/> that completes when the request is finished.</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>405</term>
/// <description>Invalid input</description>
/// </item>
/// </list>
/// </exception>
[Post("/pet/{petId}")]
Task UpdatePetWithForm(long petId, [Query] string name, [Query] string status);
/// <summary>Deletes a pet</summary>
/// <param name="petId">Pet id to delete</param>
/// <returns>A <see cref="Task"/> that completes when the request is finished.</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>400</term>
/// <description>Invalid pet value</description>
/// </item>
/// </list>
/// </exception>
[Delete("/pet/{petId}")]
Task DeletePet(long petId, [Header("api_key")] string api_key);
/// <summary>uploads an image</summary>
/// <param name="petId">ID of pet to update</param>
/// <param name="additionalMetadata">Additional Metadata</param>
/// <returns>
/// A <see cref="Task"/> representing the <see cref="IApiResponse"/> instance containing the result:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>200</term>
/// <description>successful operation</description>
/// </item>
/// </list>
/// </returns>
[Headers("Accept: application/json")]
[Post("/pet/{petId}/uploadImage")]
Task<ApiResponse> UploadFile(long petId, [Query] string additionalMetadata, StreamPart body);
/// <summary>Returns pet inventories by status</summary>
/// <remarks>Returns a map of status codes to quantities</remarks>
/// <returns>successful operation</returns>
/// <exception cref="ApiException">Thrown when the request returns a non-success status code.</exception>
[Headers("Accept: application/json")]
[Get("/store/inventory")]
Task<IDictionary<string, int>> GetInventory();
/// <summary>Place an order for a pet</summary>
/// <remarks>Place a new order in the store</remarks>
/// <returns>successful operation</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>405</term>
/// <description>Invalid input</description>
/// </item>
/// </list>
/// </exception>
[Headers("Accept: application/json")]
[Post("/store/order")]
Task<Order> PlaceOrder([Body] Order body);
/// <summary>Find purchase order by ID</summary>
/// <remarks>For valid response try integer IDs with value <= 5 or > 10. Other values will generated exceptions</remarks>
/// <param name="orderId">ID of order that needs to be fetched</param>
/// <returns>successful operation</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>400</term>
/// <description>Invalid ID supplied</description>
/// </item>
/// <item>
/// <term>404</term>
/// <description>Order not found</description>
/// </item>
/// </list>
/// </exception>
[Headers("Accept: application/json")]
[Get("/store/order/{orderId}")]
Task<Order> GetOrderById(long orderId);
/// <summary>Delete purchase order by ID</summary>
/// <remarks>For valid response try integer IDs with value < 1000. Anything above 1000 or nonintegers will generate API errors</remarks>
/// <param name="orderId">ID of the order that needs to be deleted</param>
/// <returns>A <see cref="Task"/> that completes when the request is finished.</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>400</term>
/// <description>Invalid ID supplied</description>
/// </item>
/// <item>
/// <term>404</term>
/// <description>Order not found</description>
/// </item>
/// </list>
/// </exception>
[Delete("/store/order/{orderId}")]
Task DeleteOrder(long orderId);
/// <summary>Create user</summary>
/// <remarks>This can only be done by the logged in user.</remarks>
/// <param name="body">Created user object</param>
/// <returns>successful operation</returns>
/// <exception cref="ApiException">Thrown when the request returns a non-success status code.</exception>
[Headers("Accept: application/json, application/xml")]
[Post("/user")]
Task CreateUser([Body] User body);
/// <summary>Creates list of users with given input array</summary>
/// <remarks>Creates list of users with given input array</remarks>
/// <returns>Successful operation</returns>
/// <exception cref="ApiException">Thrown when the request returns a non-success status code.</exception>
[Headers("Accept: application/xml, application/json")]
[Post("/user/createWithList")]
Task<User> CreateUsersWithListInput([Body] IEnumerable<User> body);
/// <summary>Logs user into the system</summary>
/// <param name="username">The user name for login</param>
/// <param name="password">The password for login in clear text</param>
/// <returns>successful operation</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>400</term>
/// <description>Invalid username/password supplied</description>
/// </item>
/// </list>
/// </exception>
[Headers("Accept: application/json")]
[Get("/user/login")]
Task<string> LoginUser([Query] string username, [Query] string password);
/// <summary>Logs out current logged in user session</summary>
/// <returns>A <see cref="Task"/> that completes when the request is finished.</returns>
/// <exception cref="ApiException">Thrown when the request returns a non-success status code.</exception>
[Get("/user/logout")]
Task LogoutUser();
/// <summary>Get user by user name</summary>
/// <param name="username">The name that needs to be fetched. Use user1 for testing.</param>
/// <returns>successful operation</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>400</term>
/// <description>Invalid username supplied</description>
/// </item>
/// <item>
/// <term>404</term>
/// <description>User not found</description>
/// </item>
/// </list>
/// </exception>
[Headers("Accept: application/json")]
[Get("/user/{username}")]
Task<User> GetUserByName(string username);
/// <summary>Update user</summary>
/// <remarks>This can only be done by the logged in user.</remarks>
/// <param name="username">name that needs to be deleted</param>
/// <param name="body">Update an existent user in the store</param>
/// <returns>A <see cref="Task"/> that completes when the request is finished.</returns>
/// <exception cref="ApiException">Thrown when the request returns a non-success status code.</exception>
[Put("/user/{username}")]
Task UpdateUser(string username, [Body] User body);
/// <summary>Delete user</summary>
/// <remarks>This can only be done by the logged in user.</remarks>
/// <param name="username">The name that needs to be deleted</param>
/// <returns>A <see cref="Task"/> that completes when the request is finished.</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>400</term>
/// <description>Invalid username supplied</description>
/// </item>
/// <item>
/// <term>404</term>
/// <description>User not found</description>
/// </item>
/// </list>
/// </exception>
[Delete("/user/{username}")]
Task DeleteUser(string username);
}
}
Here's an example generated output from the Swagger Petstore example configured to generate an interface for each endpoint
/// <summary>Update an existing pet</summary>
[System.CodeDom.Compiler.GeneratedCode("Refitter", "1.0.0.0")]
public partial interface IUpdatePetEndpoint
{
/// <summary>Update an existing pet</summary>
/// <remarks>Update an existing pet by Id</remarks>
/// <param name="body">Update an existent pet in the store</param>
/// <returns>Successful operation</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>400</term>
/// <description>Invalid ID supplied</description>
/// </item>
/// <item>
/// <term>404</term>
/// <description>Pet not found</description>
/// </item>
/// <item>
/// <term>405</term>
/// <description>Validation exception</description>
/// </item>
/// </list>
/// </exception>
[Headers("Accept: application/xml, application/json")]
[Put("/pet")]
Task<Pet> Execute([Body] Pet body);
}
/// <summary>Add a new pet to the store</summary>
[System.CodeDom.Compiler.GeneratedCode("Refitter", "1.0.0.0")]
public partial interface IAddPetEndpoint
{
/// <summary>Add a new pet to the store</summary>
/// <remarks>Add a new pet to the store</remarks>
/// <param name="body">Create a new pet in the store</param>
/// <returns>Successful operation</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>405</term>
/// <description>Invalid input</description>
/// </item>
/// </list>
/// </exception>
[Headers("Accept: application/xml, application/json")]
[Post("/pet")]
Task<Pet> Execute([Body] Pet body);
}
/// <summary>Finds Pets by status</summary>
[System.CodeDom.Compiler.GeneratedCode("Refitter", "1.0.0.0")]
public partial interface IFindPetsByStatusEndpoint
{
/// <summary>Finds Pets by status</summary>
/// <remarks>Multiple status values can be provided with comma separated strings</remarks>
/// <param name="status">Status values that need to be considered for filter</param>
/// <returns>successful operation</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>400</term>
/// <description>Invalid status value</description>
/// </item>
/// </list>
/// </exception>
[Headers("Accept: application/json")]
[Get("/pet/findByStatus")]
Task<ICollection<Pet>> Execute([Query] Status? status);
}
/// <summary>Finds Pets by tags</summary>
[System.CodeDom.Compiler.GeneratedCode("Refitter", "1.0.0.0")]
public partial interface IFindPetsByTagsEndpoint
{
/// <summary>Finds Pets by tags</summary>
/// <remarks>Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.</remarks>
/// <param name="tags">Tags to filter by</param>
/// <returns>successful operation</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>400</term>
/// <description>Invalid tag value</description>
/// </item>
/// </list>
/// </exception>
[Headers("Accept: application/json")]
[Get("/pet/findByTags")]
Task<ICollection<Pet>> Execute([Query(CollectionFormat.Multi)] IEnumerable<string> tags);
}
/// <summary>Find pet by ID</summary>
[System.CodeDom.Compiler.GeneratedCode("Refitter", "1.0.0.0")]
public partial interface IGetPetByIdEndpoint
{
/// <summary>Find pet by ID</summary>
/// <remarks>Returns a single pet</remarks>
/// <param name="petId">ID of pet to return</param>
/// <returns>successful operation</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>400</term>
/// <description>Invalid ID supplied</description>
/// </item>
/// <item>
/// <term>404</term>
/// <description>Pet not found</description>
/// </item>
/// </list>
/// </exception>
[Headers("Accept: application/xml, application/json")]
[Get("/pet/{petId}")]
Task<Pet> Execute(long petId);
}
/// <summary>Updates a pet in the store with form data</summary>
[System.CodeDom.Compiler.GeneratedCode("Refitter", "1.0.0.0")]
public partial interface IUpdatePetWithFormEndpoint
{
/// <summary>Updates a pet in the store with form data</summary>
/// <param name="petId">ID of pet that needs to be updated</param>
/// <param name="name">Name of pet that needs to be updated</param>
/// <param name="status">Status of pet that needs to be updated</param>
/// <returns>A <see cref="Task"/> that completes when the request is finished.</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>405</term>
/// <description>Invalid input</description>
/// </item>
/// </list>
/// </exception>
[Post("/pet/{petId}")]
Task Execute(long petId, [Query] string name, [Query] string status);
}
/// <summary>Deletes a pet</summary>
[System.CodeDom.Compiler.GeneratedCode("Refitter", "1.0.0.0")]
public partial interface IDeletePetEndpoint
{
/// <summary>Deletes a pet</summary>
/// <param name="petId">Pet id to delete</param>
/// <returns>A <see cref="Task"/> that completes when the request is finished.</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>400</term>
/// <description>Invalid pet value</description>
/// </item>
/// </list>
/// </exception>
[Delete("/pet/{petId}")]
Task Execute(long petId, [Header("api_key")] string api_key);
}
/// <summary>uploads an image</summary>
[System.CodeDom.Compiler.GeneratedCode("Refitter", "1.0.0.0")]
public partial interface IUploadFileEndpoint
{
/// <summary>uploads an image</summary>
/// <param name="petId">ID of pet to update</param>
/// <param name="additionalMetadata">Additional Metadata</param>
/// <returns>
/// A <see cref="Task"/> representing the <see cref="IApiResponse"/> instance containing the result:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>200</term>
/// <description>successful operation</description>
/// </item>
/// </list>
/// </returns>
[Headers("Accept: application/json")]
[Post("/pet/{petId}/uploadImage")]
Task<ApiResponse> Execute(long petId, [Query] string additionalMetadata, StreamPart body);
}
/// <summary>Returns pet inventories by status</summary>
[System.CodeDom.Compiler.GeneratedCode("Refitter", "1.0.0.0")]
public partial interface IGetInventoryEndpoint
{
/// <summary>Returns pet inventories by status</summary>
/// <remarks>Returns a map of status codes to quantities</remarks>
/// <returns>successful operation</returns>
/// <exception cref="ApiException">Thrown when the request returns a non-success status code.</exception>
[Headers("Accept: application/json")]
[Get("/store/inventory")]
Task<IDictionary<string, int>> Execute();
}
/// <summary>Place an order for a pet</summary>
[System.CodeDom.Compiler.GeneratedCode("Refitter", "1.0.0.0")]
public partial interface IPlaceOrderEndpoint
{
/// <summary>Place an order for a pet</summary>
/// <remarks>Place a new order in the store</remarks>
/// <returns>successful operation</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>405</term>
/// <description>Invalid input</description>
/// </item>
/// </list>
/// </exception>
[Headers("Accept: application/json")]
[Post("/store/order")]
Task<Order> Execute([Body] Order body);
}
/// <summary>Find purchase order by ID</summary>
[System.CodeDom.Compiler.GeneratedCode("Refitter", "1.0.0.0")]
public partial interface IGetOrderByIdEndpoint
{
/// <summary>Find purchase order by ID</summary>
/// <remarks>For valid response try integer IDs with value <= 5 or > 10. Other values will generated exceptions</remarks>
/// <param name="orderId">ID of order that needs to be fetched</param>
/// <returns>successful operation</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>400</term>
/// <description>Invalid ID supplied</description>
/// </item>
/// <item>
/// <term>404</term>
/// <description>Order not found</description>
/// </item>
/// </list>
/// </exception>
[Headers("Accept: application/json")]
[Get("/store/order/{orderId}")]
Task<Order> Execute(long orderId);
}
/// <summary>Delete purchase order by ID</summary>
[System.CodeDom.Compiler.GeneratedCode("Refitter", "1.0.0.0")]
public partial interface IDeleteOrderEndpoint
{
/// <summary>Delete purchase order by ID</summary>
/// <remarks>For valid response try integer IDs with value < 1000. Anything above 1000 or nonintegers will generate API errors</remarks>
/// <param name="orderId">ID of the order that needs to be deleted</param>
/// <returns>A <see cref="Task"/> that completes when the request is finished.</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>400</term>
/// <description>Invalid ID supplied</description>
/// </item>
/// <item>
/// <term>404</term>
/// <description>Order not found</description>
/// </item>
/// </list>
/// </exception>
[Delete("/store/order/{orderId}")]
Task Execute(long orderId);
}
/// <summary>Create user</summary>
[System.CodeDom.Compiler.GeneratedCode("Refitter", "1.0.0.0")]
public partial interface ICreateUserEndpoint
{
/// <summary>Create user</summary>
/// <remarks>This can only be done by the logged in user.</remarks>
/// <param name="body">Created user object</param>
/// <returns>successful operation</returns>
/// <exception cref="ApiException">Thrown when the request returns a non-success status code.</exception>
[Headers("Accept: application/json, application/xml")]
[Post("/user")]
Task Execute([Body] User body);
}
/// <summary>Creates list of users with given input array</summary>
[System.CodeDom.Compiler.GeneratedCode("Refitter", "1.0.0.0")]
public partial interface ICreateUsersWithListInputEndpoint
{
/// <summary>Creates list of users with given input array</summary>
/// <remarks>Creates list of users with given input array</remarks>
/// <returns>Successful operation</returns>
/// <exception cref="ApiException">Thrown when the request returns a non-success status code.</exception>
[Headers("Accept: application/xml, application/json")]
[Post("/user/createWithList")]
Task<User> Execute([Body] IEnumerable<User> body);
}
/// <summary>Logs user into the system</summary>
[System.CodeDom.Compiler.GeneratedCode("Refitter", "1.0.0.0")]
public partial interface ILoginUserEndpoint
{
/// <summary>Logs user into the system</summary>
/// <param name="username">The user name for login</param>
/// <param name="password">The password for login in clear text</param>
/// <returns>successful operation</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>400</term>
/// <description>Invalid username/password supplied</description>
/// </item>
/// </list>
/// </exception>
[Headers("Accept: application/json")]
[Get("/user/login")]
Task<string> Execute([Query] string username, [Query] string password);
}
/// <summary>Logs out current logged in user session</summary>
[System.CodeDom.Compiler.GeneratedCode("Refitter", "1.0.0.0")]
public partial interface ILogoutUserEndpoint
{
/// <summary>Logs out current logged in user session</summary>
/// <returns>A <see cref="Task"/> that completes when the request is finished.</returns>
/// <exception cref="ApiException">Thrown when the request returns a non-success status code.</exception>
[Get("/user/logout")]
Task Execute();
}
/// <summary>Get user by user name</summary>
[System.CodeDom.Compiler.GeneratedCode("Refitter", "1.0.0.0")]
public partial interface IGetUserByNameEndpoint
{
/// <summary>Get user by user name</summary>
/// <param name="username">The name that needs to be fetched. Use user1 for testing.</param>
/// <returns>successful operation</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>400</term>
/// <description>Invalid username supplied</description>
/// </item>
/// <item>
/// <term>404</term>
/// <description>User not found</description>
/// </item>
/// </list>
/// </exception>
[Headers("Accept: application/json")]
[Get("/user/{username}")]
Task<User> Execute(string username);
}
/// <summary>Update user</summary>
[System.CodeDom.Compiler.GeneratedCode("Refitter", "1.0.0.0")]
public partial interface IUpdateUserEndpoint
{
/// <summary>Update user</summary>
/// <remarks>This can only be done by the logged in user.</remarks>
/// <param name="username">name that needs to be deleted</param>
/// <param name="body">Update an existent user in the store</param>
/// <returns>A <see cref="Task"/> that completes when the request is finished.</returns>
/// <exception cref="ApiException">Thrown when the request returns a non-success status code.</exception>
[Put("/user/{username}")]
Task Execute(string username, [Body] User body);
}
/// <summary>Delete user</summary>
[System.CodeDom.Compiler.GeneratedCode("Refitter", "1.0.0.0")]
public partial interface IDeleteUserEndpoint
{
/// <summary>Delete user</summary>
/// <remarks>This can only be done by the logged in user.</remarks>
/// <param name="username">The name that needs to be deleted</param>
/// <returns>A <see cref="Task"/> that completes when the request is finished.</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>400</term>
/// <description>Invalid username supplied</description>
/// </item>
/// <item>
/// <term>404</term>
/// <description>User not found</description>
/// </item>
/// </list>
/// </exception>
[Delete("/user/{username}")]
Task Execute(string username);
}
Here's an example generated output from the Swagger Petstore example configured to generate an interface with dynamic querystring parameters
[System.CodeDom.Compiler.GeneratedCode("Refitter", "1.0.0.0")]
public partial interface ISwaggerPetstoreOpenAPI30
{
/// <summary>Update an existing pet</summary>
/// <remarks>Update an existing pet by Id</remarks>
/// <param name="body">Update an existent pet in the store</param>
/// <returns>Successful operation</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>400</term>
/// <description>Invalid ID supplied</description>
/// </item>
/// <item>
/// <term>404</term>
/// <description>Pet not found</description>
/// </item>
/// <item>
/// <term>405</term>
/// <description>Validation exception</description>
/// </item>
/// </list>
/// </exception>
[Headers("Accept: application/xml, application/json")]
[Put("/pet")]
Task<Pet> UpdatePet([Body] Pet body);
/// <summary>Add a new pet to the store</summary>
/// <remarks>Add a new pet to the store</remarks>
/// <param name="body">Create a new pet in the store</param>
/// <returns>Successful operation</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>405</term>
/// <description>Invalid input</description>
/// </item>
/// </list>
/// </exception>
[Headers("Accept: application/xml, application/json")]
[Post("/pet")]
Task<Pet> AddPet([Body] Pet body);
/// <summary>Finds Pets by status</summary>
/// <remarks>Multiple status values can be provided with comma separated strings</remarks>
/// <param name="status">Status values that need to be considered for filter</param>
/// <returns>successful operation</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>400</term>
/// <description>Invalid status value</description>
/// </item>
/// </list>
/// </exception>
[Headers("Accept: application/xml, application/json")]
[Get("/pet/findByStatus")]
Task<ICollection<Pet>> FindPetsByStatus([Query] Status? status);
/// <summary>Finds Pets by tags</summary>
/// <remarks>Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.</remarks>
/// <param name="tags">Tags to filter by</param>
/// <returns>successful operation</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>400</term>
/// <description>Invalid tag value</description>
/// </item>
/// </list>
/// </exception>
[Headers("Accept: application/xml, application/json")]
[Get("/pet/findByTags")]
Task<ICollection<Pet>> FindPetsByTags([Query(CollectionFormat.Multi)] IEnumerable<string> tags);
/// <summary>Find pet by ID</summary>
/// <remarks>Returns a single pet</remarks>
/// <param name="petId">ID of pet to return</param>
/// <returns>successful operation</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>400</term>
/// <description>Invalid ID supplied</description>
/// </item>
/// <item>
/// <term>404</term>
/// <description>Pet not found</description>
/// </item>
/// </list>
/// </exception>
[Headers("Accept: application/xml, application/json")]
[Get("/pet/{petId}")]
Task<Pet> GetPetById(long petId);
/// <summary>Updates a pet in the store with form data</summary>
/// <param name="petId">ID of pet that needs to be updated</param>
/// <param name="queryParams">The dynamic querystring parameter wrapping all others.</param>
/// <returns>A <see cref="Task"/> that completes when the request is finished.</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>405</term>
/// <description>Invalid input</description>
/// </item>
/// </list>
/// </exception>
[Post("/pet/{petId}")]
Task UpdatePetWithForm(long petId, [Query] UpdatePetWithFormQueryParams queryParams);
/// <summary>Deletes a pet</summary>
/// <param name="petId">Pet id to delete</param>
/// <returns>A <see cref="Task"/> that completes when the request is finished.</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>400</term>
/// <description>Invalid pet value</description>
/// </item>
/// </list>
/// </exception>
[Delete("/pet/{petId}")]
Task DeletePet(long petId, [Header("api_key")] string api_key);
/// <summary>uploads an image</summary>
/// <param name="petId">ID of pet to update</param>
/// <param name="additionalMetadata">Additional Metadata</param>
/// <returns>
/// A <see cref="Task"/> representing the <see cref="IApiResponse"/> instance containing the result:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>200</term>
/// <description>successful operation</description>
/// </item>
/// </list>
/// </returns>
[Headers("Accept: application/json")]
[Post("/pet/{petId}/uploadImage")]
Task<ApiResponse> UploadFile(long petId, [Query] string additionalMetadata, StreamPart body);
/// <summary>Returns pet inventories by status</summary>
/// <remarks>Returns a map of status codes to quantities</remarks>
/// <returns>successful operation</returns>
/// <exception cref="ApiException">Thrown when the request returns a non-success status code.</exception>
[Headers("Accept: application/json")]
[Get("/store/inventory")]
Task<IDictionary<string, int>> GetInventory();
/// <summary>Place an order for a pet</summary>
/// <remarks>Place a new order in the store</remarks>
/// <returns>successful operation</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>405</term>
/// <description>Invalid input</description>
/// </item>
/// </list>
/// </exception>
[Headers("Accept: application/json")]
[Post("/store/order")]
Task<Order> PlaceOrder([Body] Order body);
/// <summary>Find purchase order by ID</summary>
/// <remarks>For valid response try integer IDs with value <= 5 or > 10. Other values will generate exceptions.</remarks>
/// <param name="orderId">ID of order that needs to be fetched</param>
/// <returns>successful operation</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>400</term>
/// <description>Invalid ID supplied</description>
/// </item>
/// <item>
/// <term>404</term>
/// <description>Order not found</description>
/// </item>
/// </list>
/// </exception>
[Headers("Accept: application/xml, application/json")]
[Get("/store/order/{orderId}")]
Task<Order> GetOrderById(long orderId);
/// <summary>Delete purchase order by ID</summary>
/// <remarks>For valid response try integer IDs with value < 1000. Anything above 1000 or nonintegers will generate API errors</remarks>
/// <param name="orderId">ID of the order that needs to be deleted</param>
/// <returns>A <see cref="Task"/> that completes when the request is finished.</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>400</term>
/// <description>Invalid ID supplied</description>
/// </item>
/// <item>
/// <term>404</term>
/// <description>Order not found</description>
/// </item>
/// </list>
/// </exception>
[Delete("/store/order/{orderId}")]
Task DeleteOrder(long orderId);
/// <summary>Create user</summary>
/// <remarks>This can only be done by the logged in user.</remarks>
/// <param name="body">Created user object</param>
/// <returns>successful operation</returns>
/// <exception cref="ApiException">Thrown when the request returns a non-success status code.</exception>
[Headers("Accept: application/json, application/xml")]
[Post("/user")]
Task CreateUser([Body] User body);
/// <summary>Creates list of users with given input array</summary>
/// <remarks>Creates list of users with given input array</remarks>
/// <returns>Successful operation</returns>
/// <exception cref="ApiException">Thrown when the request returns a non-success status code.</exception>
[Headers("Accept: application/xml, application/json")]
[Post("/user/createWithList")]
Task<User> CreateUsersWithListInput([Body] IEnumerable<User> body);
/// <summary>Logs user into the system</summary>
/// <param name="queryParams">The dynamic querystring parameter wrapping all others.</param>
/// <returns>successful operation</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>400</term>
/// <description>Invalid username/password supplied</description>
/// </item>
/// </list>
/// </exception>
[Headers("Accept: application/xml, application/json")]
[Get("/user/login")]
Task<string> LoginUser([Query] LoginUserQueryParams queryParams);
/// <summary>Logs out current logged in user session</summary>
/// <returns>A <see cref="Task"/> that completes when the request is finished.</returns>
/// <exception cref="ApiException">Thrown when the request returns a non-success status code.</exception>
[Get("/user/logout")]
Task LogoutUser();
/// <summary>Get user by user name</summary>
/// <param name="username">The name that needs to be fetched. Use user1 for testing.</param>
/// <returns>successful operation</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>400</term>
/// <description>Invalid username supplied</description>
/// </item>
/// <item>
/// <term>404</term>
/// <description>User not found</description>
/// </item>
/// </list>
/// </exception>
[Headers("Accept: application/xml, application/json")]
[Get("/user/{username}")]
Task<User> GetUserByName(string username);
/// <summary>Update user</summary>
/// <remarks>This can only be done by the logged in user.</remarks>
/// <param name="username">name that needs to be updated</param>
/// <param name="body">Update an existent user in the store</param>
/// <returns>A <see cref="Task"/> that completes when the request is finished.</returns>
/// <exception cref="ApiException">Thrown when the request returns a non-success status code.</exception>
[Put("/user/{username}")]
Task UpdateUser(string username, [Body] User body);
/// <summary>Delete user</summary>
/// <remarks>This can only be done by the logged in user.</remarks>
/// <param name="username">The name that needs to be deleted</param>
/// <returns>A <see cref="Task"/> that completes when the request is finished.</returns>
/// <exception cref="ApiException">
/// Thrown when the request returns a non-success status code:
/// <list type="table">
/// <listheader>
/// <term>Status</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>400</term>
/// <description>Invalid username supplied</description>
/// </item>
/// <item>
/// <term>404</term>
/// <description>User not found</description>
/// </item>
/// </list>
/// </exception>
[Delete("/user/{username}")]
Task DeleteUser(string username);
}
public class UpdatePetWithFormQueryParams
{
/// <summary>
/// Name of pet that needs to be updated
/// </summary>
[Query]
public string Name { get; set; }
/// <summary>
/// Status of pet that needs to be updated
/// </summary>
[Query]
public string Status { get; set; }
}
public class LoginUserQueryParams
{
/// <summary>
/// The user name for login
/// </summary>
[Query]
public string Username { get; set; }
/// <summary>
/// The password for login in clear text
/// </summary>
[Query]
public string Password { get; set; }
}
RestService
Here's an example usage of the generated code above
using Refit;
using System;
using System.Threading.Tasks;
namespace Your.Namespace.Of.Choice.GeneratedCode;
internal class Program
{
private static async Task Main(string[] args)
{
var client = RestService.For<ISwaggerPetstore>("https://petstore3.swagger.io/api/v3");
var pet = await client.GetPetById(1);
Console.WriteLine("## Using Task<T> as return type ##");
Console.WriteLine($"Name: {pet.Name}");
Console.WriteLine($"Category: {pet.Category.Name}");
Console.WriteLine($"Status: {pet.Status}");
Console.WriteLine();
var client2 = RestService.For<WithApiResponse.ISwaggerPetstore>("https://petstore3.swagger.io/api/v3");
var response = await client2.GetPetById(2);
Console.WriteLine("## Using Task<IApiResponse<T>> as return type ##");
Console.WriteLine($"HTTP Status Code: {response.StatusCode}");
Console.WriteLine($"Name: {response.Content.Name}");
Console.WriteLine($"Category: {response.Content.Category.Name}");
Console.WriteLine($"Status: {response.Content.Status}");
}
}
The RestService class generates an implementation of ISwaggerPetstore that uses HttpClient to make its calls.
The code above when run will output something like this:
## Using Task<T> as return type ##
Name: Gatitotototo
Category: Chaucito
Status: Sold
## Using Task<IApiResponse<T>> as return type ##
HTTP Status Code: OK
Name: Gatitotototo
Category: Chaucito
Status: Sold
Refitter supports generating bootstrapping code that allows the user to conveniently configure all generated Refit interfaces by calling a single extension method to IServiceCollection.
This is enabled through the .refitter settings file like this:
which will generate an extension method to IServiceCollection called ConfigureRefitClients(). The generated extension method depends on Refit.HttpClientFactory library and looks like this:
public static IServiceCollection ConfigureRefitClients(
this IServiceCollection services,
Action<IHttpClientBuilder>? builder = default,
RefitSettings? settings = default)
{
var clientBuilderISwaggerPetstore = services
.AddRefitClient<ISwaggerPetstore>(settings)
.ConfigureHttpClient(c => c.BaseAddress = new Uri("https://petstore3.swagger.io/api/v3"))
.AddHttpMessageHandler<TelemetryDelegatingHandler>();
clientBuilderISwaggerPetstore
.AddPolicyHandler(
HttpPolicyExtensions
.HandleTransientHttpError()
.WaitAndRetryAsync(
Backoff.DecorrelatedJitterBackoffV2(
TimeSpan.FromSeconds(0.5),
3)));
builder?.Invoke(clientBuilderISwaggerPetstore);
return services;
}
This comes in handy especially when generating multiple interfaces, by tag or endpoint. For example, the following .refitter settings file
Will generate a single ConfigureRefitClients() extension methods that may contain dependency injection configuration code for multiple interfaces like this
Personally, they I use Refitter is to generate an interface per endpoint, so when generating code for a large and complex API, I might have several interfaces.
Apizr
Apizr is a Refit client manager that provides a set of features to enhance requesting experience with resilience, caching, priority, mediation, mapping, logging, authentication, file transfer capabilities and many more...
Generating the interfaces
Refitter supports generating Apizr formatted Refit interfaces that can be managed then by Apizr (v6+).
You can enable Apizr formatted Refit interface generation either:
With the --use-apizr command line argument
By setting the apizrSettings section in the .refitter settings file
Note that --use-apizr uses default Apizr settings with withRequestOptions set to true as recommended, while the .refitter settings file allows you to configure it deeper.
In both cases, it will format the generated Refit interfaces to be Apizr ready by:
Adding a final IApizrRequestOptions options parameter to all generated methods (if withRequestOptions is set to true)
Providing cancellation tokens by Apizr request options instead of a dedicated parameter (if withRequestOptions is set to true)
Using method overloads instead of optional parameters (note that setting useDynamicQuerystringParameters to true improve overloading experience)
From here, you're definitely free to use the formatted interface with Apizr by registering, configuring and using it following the Apizr documentation. But Refitter can go further by generating some helpers to make the configuration easier.
Generating the helpers
Refitter supports generating Apizr (v6+) bootstrapping code that allows the user to conveniently configure all generated Apizr formatted Refit interfaces by calling a single method.
It could be either an extension method to IServiceCollection if DependencyInjectionSettings are set, or a static builder method if not.
To enable Apizr registration code generation for IServiceCollection, you need at least to set the withRegistrationHelper property to true and configure the DependencyInjectionSettings section in the .refitter settings file.
This is what the .refitter settings file may look like, depending on you configuration:
{
"openApiPath": "../OpenAPI/v3.0/petstore.json",
"namespace": "Petstore",
"useDynamicQuerystringParameters": true,
"dependencyInjectionSettings": {
"baseUrl": "https://petstore3.swagger.io/api/v3",
"httpMessageHandlers": [ "MyDelegatingHandler" ],
"transientErrorHandler": "HttpResilience",
"maxRetryCount": 3,
"firstBackoffRetryInSeconds": 0.5
},
"apizrSettings": {
"withRequestOptions": true, // Recommended to include an Apizr request options parameter to Refit interface methods
"withRegistrationHelper": true, // Mandatory to actually generate the Apizr registration extended method
"withCacheProvider": "InMemory", // Optional, default is None
"withPriority": true, // Optional, default is false
"withMediation": true, // Optional, default is false
"withMappingProvider": "AutoMapper", // Optional, default is None
"withFileTransfer": true // Optional, default is false
}
}
which will generate an extension method to IServiceCollection called ConfigurePetstoreApiApizrManager(). The generated extension method depends on Apizr.Extensions.Microsoft.DependencyInjection library and looks like this:
This comes in handy especially when generating multiple interfaces, by tag or endpoint. For example, the following .refitter settings file
{
"openApiPath": "../OpenAPI/v3.0/petstore.json",
"namespace": "Petstore",
"useDynamicQuerystringParameters": true,
"multipleInterfaces": "ByTag",
"naming": {
"useOpenApiTitle": false,
"interfaceName": "Petstore"
},
"dependencyInjectionSettings": {
"baseUrl": "https://petstore3.swagger.io/api/v3",
"httpMessageHandlers": [ "MyDelegatingHandler" ],
"transientErrorHandler": "HttpResilience",
"maxRetryCount": 3,
"firstBackoffRetryInSeconds": 0.5
},
"apizrSettings": {
"withRequestOptions": true, // Recommended to include an Apizr request options parameter to Refit interface methods
"withRegistrationHelper": true, // Mandatory to actually generate the Apizr registration extended method
"withCacheProvider": "InMemory", // Optional, default is None
"withPriority": true, // Optional, default is false
"withMediation": true, // Optional, default is false
"withMappingProvider": "AutoMapper", // Optional, default is None
"withFileTransfer": true // Optional, default is false
}
}
Will generate a single ConfigurePetstoreApizrManagers() extension method that may contain dependency injection configuration code for multiple interfaces like this
To enable Apizr static builder code generation, you need at least to set the withRegistrationHelper property to true and leave the DependencyInjectionSettings section to null in the .refitter settings file.
This is what the .refitter settings file may look like, depending on you configuration:
{
"openApiPath": "../OpenAPI/v3.0/petstore.json",
"namespace": "Petstore",
"useDynamicQuerystringParameters": true,
"apizrSettings": {
"withRequestOptions": true, // Recommended to include an Apizr request options parameter to Refit interface methods
"withRegistrationHelper": true, // Mandatory to actually generate the Apizr registration extended method
"withCacheProvider": "Akavache", // Optional, default is None
"withPriority": true, // Optional, default is false
"withMappingProvider": "AutoMapper", // Optional, default is None
"withFileTransfer": true // Optional, default is false
}
}
which will generate a static builder method called BuildPetstore30ApizrManager(). The generated builder method depends on Apizr library and looks like this:
Here, IPetApi, IStoreApi and IUserApi are the generated interfaces which share the same common configuration defined from the .refitter file.
Customizing the configuration
You may want to adjust apis configuration, for example, to add a custom header to requests. This can be done using the Action<TApizrOptionsBuilder> parameter while calling the generated method.
To know how to make Apizr fit your needs, please refer to the Apizr documentation.
Using the managers
Once you called the generated method, you will get an IApizrManager<T> instance that you can use to make requests to the API. Here's an example of how to use it:
var result = await petstoreManager.ExecuteAsync((api, opt) => api.GetPetById(1, opt),
options => options // Whatever final request options you want to apply
.WithPriority(Priority.Background)
.WithHeaders(["HeaderKey1: HeaderValue1"])
.WithRequestTimeout("00:00:10")
.WithCancellation(cts.Token));