/// <summary>
/// Http.Get request service
/// </summary>
/// <param name="parameters"></param>
/// <param name="serviceRequest"></param>
/// <returns></returns>
public async Task <BusinessResult <TResult> > Get(RESTRequestParameters parameters, TRequest serviceRequest = null)
{
var result = new BusinessResult <TResult>();
if (parameters == null)
{
result.Error.Add(new BusinessError($"{this.GetType().FullName}.Get", LogLevel.Error,
$"Service request parameters are null; it must be of type {typeof(RESTRequestParameters).Name}"));
return(result);
}
if (string.IsNullOrEmpty(parameters.Url) || !Uri.IsWellFormedUriString(parameters.Url, UriKind.Absolute))
{
result.Error.Add(new BusinessError($"{this.GetType().FullName}.Get", LogLevel.Error, $"Invalid request Url: {parameters?.Url} is not provided or malformed"));
return(result);
}
// if TRequest is a dictionary then assume it contains query string values
if ((serviceRequest is Dictionary <string, string> requestParameters) && (!parameters.Url.Contains("?")))
{
var queryString = string.Join("&", requestParameters.Select(kvp => kvp.Key + '=' + kvp.Value));
//var queryEncodedString = HttpUtility.UrlEncode(queryString, Encoding.UTF8);
parameters.Url = string.Concat(parameters.Url, "?", queryString);
}
var serviceResult = await ExecuteRequestAsync(HttpMethod.Get, parameters, null);
result.Error.AddRange(serviceResult.Error);
result.Result = serviceResult.Result;
return(result);
}
/// <summary>
/// Http.Post request service
/// </summary>
/// <param name="parameters"></param>
/// <param name="serviceRequest"></param>
/// <returns></returns>
public async Task <BusinessResult <TResult> > Post(RESTRequestParameters parameters, TRequest serviceRequest)
{
var result = new BusinessResult <TResult>();
if (parameters == null)
{
result.Error.Add(new BusinessError($"{this.GetType().FullName}.Get", LogLevel.Error,
$"Service request parameters are null; it must be of type {typeof(RESTRequestParameters).Name}"));
return(result);
}
if (string.IsNullOrEmpty(parameters.Url) || !Uri.IsWellFormedUriString(parameters.Url, UriKind.Absolute))
{
result.Error.Add(new BusinessError($"{this.GetType().FullName}.Post", LogLevel.Error, $"Invalid request Url: {parameters?.Url} is not provided or malformed"));
return(result);
}
if (serviceRequest == null)
{
result.Error.Add(new BusinessError($"{this.GetType().FullName}.Post", LogLevel.Error, $"Invalid request object: TRequest isn't of type {typeof(TRequest).Name}"));
return(result);
}
var serviceResult = await ExecuteRequestAsync(HttpMethod.Post, parameters, serviceRequest);
result.Error.AddRange(serviceResult.Error);
result.Result = serviceResult.Result;
return(result);
}
private async Task <BusinessResult <TResult> > ExecuteRequestAsync(HttpMethod httpMethod, RESTRequestParameters parameters, TRequest request)
{
var result = new BusinessResult <TResult>();
HttpRequestMessage httpRequest;
if (_httpClient == null)
{
result.Error.Add(new BusinessError($"{this.GetType().FullName}.Post", LogLevel.Error, $"bad httpclient"));
return(result);
}
try
{
// Content
if (httpMethod == HttpMethod.Get)
{
httpRequest = new HttpRequestMessage(httpMethod, parameters.Url);
}
else if (httpMethod == HttpMethod.Post)
{
httpRequest = new HttpRequestMessage(httpMethod, parameters.Url)
{
Content = new StringContent(JsonConvert.SerializeObject(request), Encoding.UTF8, "application/json")
}
}
;
else
{
result.Error.Add(new BusinessError($"{this.GetType().FullName}.{httpMethod.Method}", LogLevel.Error, $"Invalid HttpMethod (HttpMethod.{httpMethod.Method})"));
return(result);
}
// Headers
if (parameters.Headers != null)
{
foreach (KeyValuePair <string, string> kvp in parameters.Headers)
{
httpRequest.Headers.Add(kvp.Key, kvp.Value);
}
}
// Response
HttpResponseMessage httpResponse = await _httpClient.SendAsync(httpRequest, parameters.CancellationToken).ConfigureAwait(false);
if (!httpResponse.IsSuccessStatusCode)
{
string errMsg = $"{httpMethod.Method} Request: status code {(int)httpResponse.StatusCode}, reason {httpResponse.ReasonPhrase}";
result.Error.Add(new BusinessError($"{this.GetType().FullName}.{httpMethod.Method}", LogLevel.Error, errMsg));
return(result);
}
if (httpResponse.StatusCode == HttpStatusCode.OK)
{
string response = await httpResponse.Content.ReadAsStringAsync();
result.Result = JsonConvert.DeserializeObject <TResult>(response);
}
}
catch (Exception ex)
{
result.Error.Add(new BusinessError($"{this.GetType().FullName}.{httpMethod.Method}", LogLevel.Critical, $"{ex.Message}", ex));
}
return(result);
}
