private static async Task MainAsync(string[] args)
{
using (var environment = ExampleEnvironment.Start())
{
var baseUri = environment.GetResourceWebService <Resource.Api.Startup>().BaseUri;
/*
* RequestDto and ResponseDto refer to the Request Body and Response Body.
* The reason in which it is specified as a DTO is in reference to
* Data Transfer Object. This is a POCO (Plain Old C Object) where the
* class consists of ONLY properties with a get and set. For example:
*
* public class MyDto
* {
* public string Message { get; set; }
* public int Id { get; set; }
* }
*
* DTOs are a fantastic way to transfer data across layers of an application.
* That's why in RestWell, we refer to the objects that represent the request
* and response bodies as DTOs.
*
* You can create your DTOs to match one-for-one with the body and allow the
* framework to auto-magically know how to serialize and deserialize your DTO.
*
* If complete utter control is your thing, no problem. You can mark up your
* request with Newtonsoft.Json annotations to better describe how to
* serialize/deserialize the request/response body into it's corresponding DTO.
*/
using (var proxy = new Proxy())
{
/*
* Set the Request DTO and Response DTO types for the ProxyRequestBuilder
* Note: If a request does not have a Request Body or a Response Body you
* can use System.Missing as the type to specify that there is no body
*/
var proxyRequest = ProxyRequestBuilder <ExampleRequestDto, ExampleResponseDto>
.CreateBuilder(baseUri, HttpRequestMethod.Get)
.AppendToRoute("api/example/body")
.Accept("application/json")
// Set the Request DTO
.SetRequestDto(new ExampleRequestDto {
Message = "Hello World"
})
.Build();
var proxyResponse = await proxy.InvokeAsync(proxyRequest).ConfigureAwait(false);
if (proxyResponse.IsSuccessfulStatusCode)
{
Console.WriteLine("Proxy Response Body:");
Console.WriteLine($"\tDTO Type: {proxyResponse.ResponseDto.GetType().Name}");
Console.WriteLine($"\tResponse Message: {proxyResponse.ResponseDto.Message}");
}
}
}
Console.ReadKey();
}
public async Task <IActionResult> Index()
{
HomeModel model = new HomeModel();
using (var environment = ExampleEnvironment.Start())
{
var baseUri = environment.GetResourceWebService <RestWell.Examples.Resource.Api.Startup>().BaseUri;
var proxyRequest = ProxyRequestBuilder <string[]>
.CreateBuilder(baseUri, HttpRequestMethod.Get)
.AppendToRoute("api/example")
.Accept("application/json")
.Build();
// Using the inject ProxyConfiguration
using (var proxy = new Proxy(this.injectedProxyConfiguration))
{
var proxyResponseForInjectedProxyConfiguration = await this.injectedProxy.InvokeAsync(proxyRequest);
if (proxyResponseForInjectedProxyConfiguration.IsSuccessfulStatusCode)
{
model.ValuesFromInjectedProxyConfiguration = proxyResponseForInjectedProxyConfiguration.ResponseDto;
}
}
// Using the injected Proxy
var proxyResponseForInjectedProxy = await this.injectedProxy.InvokeAsync(proxyRequest);
if (proxyResponseForInjectedProxy.IsSuccessfulStatusCode)
{
model.ValuesFromInjectedProxy = proxyResponseForInjectedProxy.ResponseDto;
}
}
return(View(model));
}
private static async Task MainAsync(string[] args)
{
using (var environment = ExampleEnvironment.Start())
{
var baseUri = environment.GetResourceWebService <Resource.Api.Startup>().BaseUri;
/*
* Configuring the proxy allows you to customize the proxy's behavior.
* For example, you can inject your own delegating handler into the
* request pipeline or set default request headers for every request!
*/
#region Setting a Default Request Header
// In order to configure the proxy, you need to create a ProxyConfiguration using the ProxyConfigurationBuilder
var proxyConfigurationBuilder = ProxyConfigurationBuilder.CreateBuilder();
/*
* The ProxyConfigurationBuilder exposes a few things to use that we can take
* advantage of for every request. For example, if we always want
* to Accept application/json, we can set the default Accept header to
* always be application/json
*/
proxyConfigurationBuilder.UseDefaultAcceptHeader(new MediaTypeWithQualityHeaderValue("application/json"));
// Now, we use the ProxyConfigurationBuilder.Build() to create a ProxyConfiguration
var proxyConfiguration = proxyConfigurationBuilder.Build();
// Now, you use the ProxyConfiguration when creating the Proxy to tell the Proxy how to be configured
using (var proxy = new Proxy(proxyConfiguration))
{
// Notice on this request we did not use the Accept() method to add an accept header
var proxyRequest = ProxyRequestBuilder <string[]>
.CreateBuilder(baseUri, HttpRequestMethod.Get)
.AppendToRoute("api/example")
.Build();
var proxyResponse = await proxy.InvokeAsync(proxyRequest).ConfigureAwait(false);
if (proxyResponse.IsSuccessfulStatusCode)
{
// Let's see what the accept header looks like
var requestHeaders = proxyResponse.RequestHeaders;
var acceptHeader = requestHeaders.Accept;
Console.WriteLine("The Accept Header Value:");
Console.WriteLine($"\t{acceptHeader}");
Console.WriteLine();
// Show the API response
var valuesArray = proxyResponse.ResponseDto;
Writer.WriteValues(valuesArray);
}
}
#endregion
Console.WriteLine("\n==========\n");
#region Overriding a Default Request Header
/*
* But what if we want application/xml as the default, but for a certain request we want application/json?
* Great question, you can use the ProxyRequest to override the ProxyConfiguration's default header values.
*/
proxyConfiguration = ProxyConfigurationBuilder.CreateBuilder()
// Setting the default Accept header to "application/xml"
.UseDefaultAcceptHeader(new MediaTypeWithQualityHeaderValue("application/xml"))
.Build();
using (var proxy = new Proxy(proxyConfiguration))
{
var proxyRequest = ProxyRequestBuilder <string[]>
.CreateBuilder(baseUri, HttpRequestMethod.Get)
.AppendToRoute("api/example")
// Override the default Accept header value
.Accept("application/json")
.Build();
var proxyResponse = await proxy.InvokeAsync(proxyRequest).ConfigureAwait(false);
if (proxyResponse.IsSuccessfulStatusCode)
{
// Let's see what the accept header looks like
var requestHeaders = proxyResponse.RequestHeaders;
var acceptHeader = requestHeaders.Accept;
Console.WriteLine("The Overriden Accept Header Value:");
Console.WriteLine($"\t{acceptHeader}");
Console.WriteLine();
// Show the API response
var valuesArray = proxyResponse.ResponseDto;
Writer.WriteValues(valuesArray);
}
}
#endregion
Console.WriteLine("\n==========\n");
#region Injecting Delegating Handlers
/*
* Another incredibly awesome thing we can do is inject a DelegatingHandler into the
* request pipeline of the Proxy. A DelegatingHandler sits between your request and
* the actual request out to the RESTful service. Think of it like a translator where
* you can give the translator a message, they can manipulate the message and send it
* to someone else. One really awesome thing you can do with Delegating Handlers is
* insert logging into your request pipeline!
*
* Note: The order of which you inject your Delegating Handlers matters. It is a
* First In First Out order (i.e. the first registered DelegatingHandler will execute first).
*/
proxyConfiguration = ProxyConfigurationBuilder
.CreateBuilder()
// Inject our LoggingDelegatingHandler
.AddDelegatingHandlers(new LoggingDelegatingHandler())
.UseDefaultAcceptHeader(new MediaTypeWithQualityHeaderValue("application/json"))
.Build();
using (var proxy = new Proxy(proxyConfiguration))
{
var proxyRequest = ProxyRequestBuilder <string[]>
.CreateBuilder(baseUri, HttpRequestMethod.Get)
.AppendToRoute("api/example")
.Build();
var proxyResponse = await proxy.InvokeAsync(proxyRequest).ConfigureAwait(false);
if (proxyResponse.IsSuccessfulStatusCode)
{
var valuesArray = proxyResponse.ResponseDto;
Writer.WriteValues(valuesArray);
}
}
#endregion
Console.WriteLine("\n==========\n");
#region Using Delegating Actions
/*
* Even cooler than Delegating Handlers are Delegating Actions. RestWell allows for
* you to specify an Action Delegate to be injected into the request pipeline. This
* allows you to inject logic into the request pipeline without having to extend
* and override the DelegatingHandler class yourself.
*
* Note: You can even mix and match Delegating Handlers and Delegating Actions.
* Just remember, though, they are injected in FIFO order.
*/
proxyConfiguration = ProxyConfigurationBuilder
.CreateBuilder()
// Inject our Delegating Actions
.AddDelegatingAction((request, _) =>
{
Console.WriteLine($"Delegating Action Picked Up Request:");
Console.WriteLine($"\tRequest Method: {request.Method.Method}");
Console.WriteLine($"\tAccept Header: {request.Headers.Accept}");
Console.WriteLine($"\tRequest URI: {request.RequestUri}");
Console.WriteLine();
}
)
.UseDefaultAcceptHeader(new MediaTypeWithQualityHeaderValue("application/json"))
.Build();
using (var proxy = new Proxy(proxyConfiguration))
{
var proxyRequest = ProxyRequestBuilder <string[]>
.CreateBuilder(baseUri, HttpRequestMethod.Get)
.AppendToRoute("api/example")
.Build();
var proxyResponse = await proxy.InvokeAsync(proxyRequest).ConfigureAwait(false);
if (proxyResponse.IsSuccessfulStatusCode)
{
var valuesArray = proxyResponse.ResponseDto;
Writer.WriteValues(valuesArray);
}
}
#endregion
}
Console.ReadKey();
}
private static async Task MainAsync(string[] args)
{
using (var environment = ExampleEnvironment.Start())
{
/*
* The using statment and this line only serve the purpose of spinning up
* a demo API (found in RestWell.Examples.Resource.Api) that we can use for
* demo purposes and get it's base URI. These steps are not required for
* the usage of RestWell.
*/
var baseUri = environment.GetResourceWebService <Resource.Api.Startup>().BaseUri;
#region Creating a ProxyRequest using the ProxyRequestBuilder
/*
* First, we create a ProxyRequest using the ProxyRequestBuilder to setup a RESTful request to our demo API.
* Now, the request we are going to create will be a GET request with no request body. The request body
* returned from the API is a string array of values which should be { "value1", "value2" }.
*/
/*
* In order to have a valid request, we must specify a base URI and request type
* We also specify the TResposneDto as string[] since the response body is
* a string array.
*/
var proxyRequestBuilder = ProxyRequestBuilder <string[]> .CreateBuilder(baseUri, HttpRequestMethod.Get);
// Now we add /api/example to the URI to point to the API's ExampleController
proxyRequestBuilder.AppendToRoute("api/example");
// Now we set the Accept header to application/json
proxyRequestBuilder.Accept("application/json");
/*
* Now that we have a ProxyRequestBuilder configured for our request
* we can use the Build() method to build a ProxyRequest
*/
var proxyRequest = proxyRequestBuilder.Build();
#endregion
#region Creating a Proxy, invoking the ProxyRequest, and obtaining a ProxyResult
/*
* Now with a proxy request, we can create a proxy which we
* use to invoke the request. The Proxy class is disposable
* so we wrap it in a using statement here; however, we
* will cover Dependency Injection in a more advanced example.
*/
using (var proxy = new Proxy())
{
#region Issue the ProxyRequest
// Use the proxy to invoke the request and obtain a response
var proxyResponse = await proxy.InvokeAsync(proxyRequest).ConfigureAwait(false);
#endregion
#region Use the ProxyResponse
// Now we see if the request was successful
if (proxyResponse.IsSuccessfulStatusCode)
{
// If so, we can get the response body and do something with it
var valuesArray = proxyResponse.ResponseDto;
Writer.WriteValues(valuesArray);
}
// Otherwise, we should probably handle a failed request
else
{
Console.WriteLine("The request failed!!! :(");
}
#endregion
}
#endregion
}
Console.ReadKey();
}
