private static void ConfigureDynamics(IServiceCollection services, ProjectConfiguration project, ProjectResource projectResource, Serilog.ILogger logger)
{
Debug.Assert(services != null, "Required ServiceCollection is null");
Debug.Assert(project != null, "Required ProjectConfiguration is null");
Debug.Assert(projectResource != null, "Required ProjectResource is null");
Debug.Assert(projectResource.Type == ProjectType.Dynamics, "Project type must be Dynamics");
// the projectResourceKey convention is repeated also in OAuthClientFactory which gets the HttpClient using the same convention,
//
// {Id}-dynamics-authorization
//
string projectResourceKey = project.Id + "-dynamics";
// add authorization HttpClient
services.AddHttpClient(projectResourceKey + "-authorization", configure => configure.BaseAddress = projectResource.AuthorizationUri)
;
// add odata HttpClient
// note: I do not like this IoC anti-pattern where we are using the service locator directly, however,
// there are many named dependencies. There may be an opportunity to address this in the future
var builder = services.AddHttpClient(projectResourceKey, configure =>
{
configure.BaseAddress = projectResource.Resource;
})
.AddHttpMessageHandler(serviceProvider =>
{
// build the token service that talk to the OAuth endpoint
IOAuthClientFactory oauthClientFactory = serviceProvider.GetRequiredService <IOAuthClientFactory>();
IOAuthClient client = oauthClientFactory.Create(project);
ITokenCache <OAuthOptions, Token> tokenCache = serviceProvider.GetRequiredService <ITokenCache <OAuthOptions, Token> >();
ITokenService tokenService = new OAuthTokenService(client, tokenCache);
var handler = new TokenAuthorizationHandler(tokenService, CreateOAuthOptions(projectResource));
return(handler);
});
var apiGatewayHost = projectResource.ApiGatewayHost;
var apiGatewayPolicy = projectResource.ApiGatewayPolicy;
if (!string.IsNullOrEmpty(apiGatewayHost) && !string.IsNullOrEmpty(apiGatewayPolicy))
{
// add the ApiGatewayHandler
logger.Information("Using {@ApiGateway} for {Resource}", new { Host = apiGatewayHost, Policy = apiGatewayPolicy }, projectResource.Resource);
builder.AddHttpMessageHandler(() => new ApiGatewayHandler(apiGatewayHost, apiGatewayPolicy));
}
}
private static void ConfigureDynamics(IServiceCollection services, ProjectConfiguration project, ProjectResource projectResource, Serilog.ILogger logger)
{
Debug.Assert(services != null, "Required ServiceCollection is null");
Debug.Assert(project != null, "Required ProjectConfiguration is null");
Debug.Assert(projectResource != null, "Required ProjectResource is null");
Debug.Assert(projectResource.Type == ProjectType.Dynamics, "Project type must be Dynamics");
string projectResourceKey = project.Id + "-dynamics";
// add authorization HttpClient
services.AddHttpClient(projectResourceKey + "-authorization", configure => configure.BaseAddress = projectResource.AuthorizationUri)
;
// add odata HttpClient
// note: I do not like this IoC anti-pattern where we are using the service locator directly, however,
// there are many named dependencies. There may be an opportunity to address this in the future
services.AddHttpClient(projectResourceKey, configure =>
{
configure.BaseAddress = projectResource.BaseAddress;
// use the API Gateway if required
if (projectResource.BaseAddress.Host != projectResource.Resource.Host)
{
configure.DefaultRequestHeaders.Add("RouteToHost", projectResource.Resource.Host);
}
})
.AddHttpMessageHandler((serviceProvider) =>
{
// build the token service that talk to the OAuth endpoint
IHttpClientFactory httpClientFactory = serviceProvider.GetRequiredService <IHttpClientFactory>();
HttpClient httpClient = httpClientFactory.CreateClient(projectResourceKey + "-authorization");
// create the handler that will authenticate the call and add authorization header
ILogger <OAuthClient> logger = serviceProvider.GetRequiredService <ILogger <OAuthClient> >();
ITokenCache tokenCache = serviceProvider.GetRequiredService <ITokenCache>();
ITokenService tokenService = new OAuthTokenService(new OAuthClient(httpClient, logger), tokenCache);
var handler = new TokenAuthorizationHandler(tokenService, CreateOAuthOptions(projectResource));
return(handler);
});
}
private async Task <Tuple <ProjectResource, Exception> > GetOAuthAccessTokenAsync(ProjectConfiguration project, ProjectResource resource)
{
if (project == null)
{
throw new ArgumentNullException(nameof(project));
}
if (resource == null)
{
throw new ArgumentNullException(nameof(resource));
}
var options = new OAuthOptions
{
AuthorizationUri = resource.AuthorizationUri,
ClientId = resource.ClientId,
ClientSecret = resource.ClientSecret,
Username = resource.Username,
Password = resource.Password,
Resource = resource.Resource
};
try
{
IOAuthClient oAuthClient = _oAuthClientFactory.Create(project);
ITokenCache <OAuthOptions, Token> tokenCache = _serviceProvider.GetRequiredService <ITokenCache <OAuthOptions, Token> >();
ITokenService tokenService = new OAuthTokenService(oAuthClient, tokenCache);
// IOAuthClient does not cache tokens
var token = await tokenService.GetTokenAsync(options, CancellationToken.None);
return(Tuple.Create(resource, _noException));
}
catch (Exception e)
{
return(Tuple.Create(resource, e));
}
}
