public HttpResponseMessage GetCountries()
{
EntityTagHeaderValue requestEtag = Request.Headers.IfNoneMatch.FirstOrDefault();
EntityTagHeaderValue responseEtag;
HttpResponseMessage response;
IEnumerable <Country> countryList = new List <Country>();
try
{
ICountriesRepository repository = RepositoryProvider.GetRepository <ICountriesRepository>();
countryList = repository.FetchAllCountries();
if (countryList.Count() <= 0)
{
response = Request.CreateResponse(HttpStatusCode.NoContent);
}
else
{
responseEtag = new EntityTagHeaderValue("\"" + countryList.GetHashCode() + "\"");
if (requestEtag == null || requestEtag.Tag != responseEtag.Tag)
{
response = Request.CreateResponse(HttpStatusCode.OK, countryList);
response.Headers.CacheControl = new System.Net.Http.Headers.CacheControlHeaderValue();
response.Headers.CacheControl.Public = true;
response.Headers.CacheControl.MustRevalidate = true;
response.Headers.CacheControl.MaxAge = new TimeSpan(30000);
response.Headers.CacheControl.NoCache = false;
response.Headers.ETag = responseEtag;
}
else
{
response = Request.CreateResponse(HttpStatusCode.NotModified);
}
}
}
catch (Exception exception)
{
string errorMessage = "Error while executing GetCountries() in CountriesController class. Error message: " + exception.Message;
LogHelper.LogError(errorMessage, exception);
response = Request.CreateErrorResponse(HttpStatusCode.InternalServerError, "Internal server error");
}
return(response);
}
