private string CallApi(string apiHandle, HttpMethod method, out int httpStatusCode, string requestPayload = null, string requestContentType = "application/x-www-form-urlencoded")
{
try
{
var cacheKey = ("CheckMx-" + apiHandle).ToLower();
var fromCache = CacheWrapper <string> .Get(cacheKey);
if (!string.IsNullOrWhiteSpace(fromCache))
{
httpStatusCode = 304; // Not modified
return(fromCache);
}
var request =
WebRequest.Create(_apiBaseUrl + apiHandle) as
HttpWebRequest;
request.Method = method.Method;
request.ContentType = requestContentType;
request.Headers["X-API-Key"] = _apiKey;
request.Accept = _acceptHeader;
request.Expect = "application/json";
// Optional payload
if (!string.IsNullOrEmpty(requestPayload))
{
var encoder = new UTF8Encoding();
var data = encoder.GetBytes(requestPayload);
request.ContentLength = data.Length;
request.GetRequestStream().Write(data, 0, data.Length);
}
var response = request.GetResponse();
var reader = new StreamReader(response.GetResponseStream());
var responseData = reader.ReadToEnd();
httpStatusCode = response.GetHttpStatusCode();
CacheWrapper <string> .Insert(cacheKey, responseData,
cacheKey.Contains("/station")?_stationCacheTimeInMinutes : _metarTafCacheTimeInMinutes);
return(responseData);
}
catch (WebException e)
{
using (var response = e.Response)
{
using (var data = response.GetResponseStream())
using (var reader = new StreamReader(data))
{
var responseData = reader.ReadToEnd();
var statusCode = response.GetHttpStatusCode();
var asResponse = JsonConvert.DeserializeObject <ApiResponseObject <object> >(responseData);
if (asResponse == null || !asResponse.Errors.AnyNullSafe())
{
throw new ApiException("Error in communication with the API", e, responseData, statusCode);
}
var error = asResponse.Errors.First();
throw new ApiException(error.Message + " " + error.Help, null, responseData, statusCode);
}
}
}
}
