/// <summary>
/// Send http request and return <see cref="HttpResponseMessage"/> received.
/// </summary>
/// <param name="url">Url to be requested.</param>
/// <param name="data">Data to be sent.</param>
/// <param name="options">Request options.</param>
/// <returns>Asynchronous task.</returns>
protected async Task <HttpResponseMessage> GetResponseMessageAsync(string url, object data = null, HttpRequestOptions options = null)
{
if (options == null)
{
options = new HttpRequestOptions();
}
using (var client = new HttpClient(InnerHandler ?? new HttpClientHandler(), InnerHandler == null))
{
client.BaseAddress = new Uri(BaseUrl);
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/octet-stream"));
var request = new HttpRequestMessage(options.Method, url);
if (options.Method != HttpMethod.Get && data != null)
{
request.Content = data as HttpContent ?? new StringContent(data.ToString(), Encoding.UTF8);
}
try
{
var response = await client.SendAsync(request, options.Completion, options.Token).ConfigureAwait(false);
if (!response.IsSuccessStatusCode)
{
OnError(response, null);
}
return(response);
}
catch (Exception e)
{
OnError(null, e);
}
}
return(null);
}
private async Task <T> CallWebHDFS <T>(string path, string operation, HttpContent content = null, HttpRequestOptions options = null) where T : IJObject, new()
{
string uri = GetUriForOperation(path).SetQueryParam("op", operation);
if (options.AdditionalQueryParameters != null)
{
uri = uri.SetQueryParams(options.AdditionalQueryParameters);
}
var response = await GetResponseMessageAsync(uri, content, options ?? new HttpRequestOptions());
if (response.IsSuccessStatusCode)
{
var jobj = JObject.Parse(await response.Content.ReadAsStringAsync());
if (jobj == null)
{
return(default(T));
}
var result = new T() as IJObject;
result.Parse(jobj);
return((T)result);
}
return(default(T));
}
