/// <summary>
/// Appends query parameters for the supplied list options object to the supplied URI.
/// </summary>
/// <param name="uri">
/// The URI to append the filter parameters to.
/// </param>
/// <param name="filterableRequest">
/// The filtering options.
/// </param>
/// <returns>
/// The URI with the filter parameters.
/// </returns>
public static Uri AppendToUri(this IFilterableRequest filterableRequest, Uri uri)
{
if (uri == null)
{
throw new ArgumentNullException("uri");
}
if (filterableRequest == null || filterableRequest.Filters == null)
{
return(uri);
}
var parameters = filterableRequest.Filters
.Select(filter => filter.ToString())
.Where(filter => !string.IsNullOrEmpty(filter))
.ToArray();
if (parameters.Length == 0)
{
return(uri);
}
var queryString = string.Join("&", parameters);
return(uri.ToString().Contains("?")
? new Uri(uri + "&" + queryString, UriKind.Relative)
: new Uri(uri + "?" + queryString, UriKind.Relative));
}
/// <summary>
/// The get async.
/// </summary>
/// <param name="relativeOperationUri">
/// The relative operation uri.
/// </param>
/// <param name="pagingOptions">
/// The paging options.
/// </param>
/// <param name="filteringOptions">
/// The filtering options.
/// </param>
/// <typeparam name="TResult">
/// Result from the Get call
/// </typeparam>
/// <returns>
/// The <see cref="Task"/>.
/// </returns>
/// <exception cref="ArgumentNullException">
/// </exception>
/// <exception cref="ArgumentException">
/// </exception>
/// <exception cref="ComputeApiException">
/// </exception>
/// <exception cref="HttpRequestException">
/// </exception>
public async Task <TResult> GetAsync <TResult>(Uri relativeOperationUri, IPageableRequest pagingOptions = null, IFilterableRequest filteringOptions = null)
{
if (relativeOperationUri == null)
{
throw new ArgumentNullException("relativeOperationUri");
}
if (relativeOperationUri.IsAbsoluteUri)
{
throw new ArgumentException("The supplied URI is not a relative URI.", "relativeOperationUri");
}
if (filteringOptions != null)
{
relativeOperationUri = filteringOptions.AppendToUri(relativeOperationUri);
}
if (pagingOptions != null)
{
relativeOperationUri = pagingOptions.AppendToUri(relativeOperationUri);
}
try
{
using (HttpResponseMessage response = await _httpClient.GetAsync(relativeOperationUri))
{
if (!response.IsSuccessStatusCode)
{
await HandleApiRequestErrors(response);
}
if (typeof(TResult) == typeof(string))
{
return((TResult)(object)(await response.Content.ReadAsStringAsync()));
}
else
{
return(await ReadResponseAsync <TResult>(response.Content));
}
}
}
catch (HttpRequestException ex)
{
throw new ComputeApiHttpException(new Uri(_httpClient.BaseAddress, relativeOperationUri), HttpMethod.Get,
ex);
}
}
