/// <summary>
/// Queries the asynchronous.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="queryRequest">The query request.</param>
/// <param name="token">The token.</param>
/// <returns></returns>
public async Task <IAnalyticsResult <T> > QueryAsync <T>(IAnalyticsRequest queryRequest, CancellationToken token)
{
var result = new AnalyticsResult <T>();
FailureCountingUri baseUri;
if (!TryGetUri(result, out baseUri))
{
return(result);
}
ApplyCredentials(queryRequest, ClientConfiguration);
string body;
using (ClientConfiguration.Tracer.BuildSpan(queryRequest, CouchbaseOperationNames.RequestEncoding).StartActive())
{
body = queryRequest.GetFormValuesAsJson();
}
using (var content = new StringContent(body, System.Text.Encoding.UTF8, MediaType.Json))
{
try
{
Log.Trace("Sending analytics query cid{0}: {1}", queryRequest.CurrentContextId, baseUri);
HttpResponseMessage response;
using (ClientConfiguration.Tracer.BuildSpan(queryRequest, CouchbaseOperationNames.DispatchToServer).StartActive())
{
var request = new HttpRequestMessage(HttpMethod.Post, baseUri)
{
Content = content
};
if (queryRequest is AnalyticsRequest req && req.PriorityValue != 0)
{
request.Headers.Add(AnalyticsPriorityHeaderName, new[] { req.PriorityValue.ToString() });
}
response = await HttpClient.SendAsync(request, token).ContinueOnAnyContext();
}
using (var scope = ClientConfiguration.Tracer.BuildSpan(queryRequest, CouchbaseOperationNames.ResponseDecoding).StartActive())
using (var stream = await response.Content.ReadAsStreamAsync().ContinueOnAnyContext())
{
result = DataMapper.Map <AnalyticsResultData <T> >(stream).ToQueryResult();
result.Success = result.Status == QueryStatus.Success;
result.HttpStatusCode = response.StatusCode;
Log.Trace("Received analytics query cid{0}: {1}", result.ClientContextId, result.ToString());
scope.Span.SetPeerLatencyTag(result.Metrics.ElaspedTime);
}
baseUri.ClearFailed();
}
catch (OperationCanceledException e)
{
var operationContext = OperationContext.CreateAnalyticsContext(queryRequest.CurrentContextId, Context.BucketName, baseUri?.Authority);
if (queryRequest is AnalyticsRequest request)
{
operationContext.TimeoutMicroseconds = request.TimeoutValue;
}
Log.Info(operationContext.ToString());
ProcessError(e, result);
}
catch (HttpRequestException e)
{
Log.Info("Failed analytics query cid{0}: {1}", queryRequest.CurrentContextId, baseUri);
baseUri.IncrementFailed();
ProcessError(e, result);
Log.Error(e);
}
catch (AggregateException ae)
{
ae.Flatten().Handle(e =>
{
Log.Info("Failed analytics query cid{0}: {1}", queryRequest.CurrentContextId, baseUri);
ProcessError(e, result);
return(true);
});
}
catch (Exception e)
{
Log.Info("Failed analytics query cid{0}: {1}", queryRequest.CurrentContextId, baseUri);
Log.Info(e);
ProcessError(e, result);
}
}
UpdateLastActivity();
return(result);
}
