private TApi GetRestApiImplementation <TApi>()
{
if (_implementations.ContainsKey(typeof(TApi)))
{
return((TApi)_implementations[typeof(TApi)]);
}
var httpClientHandlerType = ApiDefinitionAttributeExtension.GetHttpClientHandlerType <TApi>();
var httpClientMessageHandler = GetHandler(httpClientHandlerType);
var httpClient = new HttpClient(httpClientMessageHandler)
{
BaseAddress = ApiDefinitionAttributeExtension.GetUri <TApi>(),
Timeout = ApiDefinitionAttributeExtension.GetTimeout <TApi>()
};
if (httpClient.BaseAddress == null)
{
throw new InvalidOperationException($"HttpClient Base Address has not been set. " +
$"In case you are not using {nameof(ApiDefinitionAttribute)} on your interface, set global constant in:" +
$"{nameof(BaseApiConfiguration)} class.");
}
var restApi = default(TApi);
try
{
restApi = _refitSettings != null
? RestService.For <TApi>(httpClient, _refitSettings)
: RestService.For <TApi>(httpClient);
_implementations.Add(typeof(TApi), restApi);
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex);
}
return(restApi);
}
private DelegatingHandler GetConfiguredHandler <TApi>()
{
var httpClientHandlerType = ApiDefinitionAttributeExtension.GetHttpClientHandlerType <TApi>();
var httpClientMessageHandler = default(DelegatingHandler);
if (_handlerFactories.ContainsKey(httpClientHandlerType) && !_handlerImplementations.ContainsKey(httpClientHandlerType))
{
var factory = _handlerFactories[httpClientHandlerType];
_handlerImplementations.Add(httpClientHandlerType, factory());
}
if (_handlerImplementations.ContainsKey(httpClientHandlerType))
{
httpClientMessageHandler = _handlerImplementations[httpClientHandlerType];
}
else
{
httpClientMessageHandler = Activator.CreateInstance(httpClientHandlerType) as DelegatingHandler;
_handlerImplementations.Add(httpClientHandlerType, httpClientMessageHandler);
}
return(httpClientMessageHandler);
}