/// <summary>
/// Executes a <see cref="IFtsQuery" /> request including any <see cref="ISearchParams" /> parameters asynchronously.
/// </summary>
/// <returns>A <see cref="ISearchQueryResult"/> wrapped in a <see cref="Task"/> for awaiting on.</returns>
public async Task <ISearchQueryResult> QueryAsync(SearchQuery searchQuery, CancellationToken cancellationToken)
{
var searchResult = new SearchQueryResult();
var baseUri = Context.GetSearchUri();
var requestUri = new Uri(baseUri, searchQuery.RelativeUri());
string searchBody;
using (ClientConfiguration.Tracer.BuildSpan(searchQuery, CouchbaseOperationNames.RequestEncoding).StartActive())
{
searchBody = searchQuery.ToJson();
}
try
{
using (var content = new StringContent(searchBody, Encoding.UTF8, MediaType.Json))
{
HttpResponseMessage response;
using (ClientConfiguration.Tracer.BuildSpan(searchQuery, CouchbaseOperationNames.DispatchToServer).StartActive())
{
response = await HttpClient.PostAsync(requestUri, content, cancellationToken).ContinueOnAnyContext();
}
using (ClientConfiguration.Tracer.BuildSpan(searchQuery, CouchbaseOperationNames.ResponseDecoding).StartActive())
using (var stream = await response.Content.ReadAsStreamAsync().ContinueOnAnyContext())
{
if (response.IsSuccessStatusCode)
{
searchResult = DataMapper.Map <SearchQueryResult>(stream);
}
else
{
string responseContent;
using (var reader = new StreamReader(stream))
{
responseContent = await reader.ReadToEndAsync().ContinueOnAnyContext();
}
if (response.Content.Headers.TryGetValues("Content-Type", out var values) &&
values.Any(value => value.Contains(MediaType.Json)))
{
// server 5.5+ responds with JSON content
var result = JsonConvert.DeserializeObject <FailedSearchQueryResult>(responseContent);
ProcessError(new HttpRequestException(result.Message), searchResult);
searchResult.Errors.Add(result.Message);
}
else
{
// use response content as raw string
// ReSharper disable once UseStringInterpolation
var message = string.Format("{0}: {1}", (int)response.StatusCode, response.ReasonPhrase);
ProcessError(new HttpRequestException(message), searchResult);
searchResult.Errors.Add(responseContent);
}
if (response.StatusCode == HttpStatusCode.NotFound)
{
baseUri.IncrementFailed();
}
}
}
}
baseUri.ClearFailed();
}
catch (OperationCanceledException e)
{
var operationContext = OperationContext.CreateSearchContext(Context.BucketName, baseUri?.Authority);
if (searchQuery is SearchQuery query)
{
operationContext.TimeoutMicroseconds = query.TimeoutValue;
}
Log.Info(operationContext.ToString());
ProcessError(e, searchResult);
}
catch (HttpRequestException e)
{
Log.Info("Search failed {0}: {1}{2}", baseUri, Environment.NewLine, User(searchBody));
baseUri.IncrementFailed();
ProcessError(e, searchResult);
Log.Error(e);
}
catch (AggregateException ae)
{
ae.Flatten().Handle(e =>
{
Log.Info("Search failed {0}: {1}{2}", baseUri, Environment.NewLine, User(searchBody));
ProcessError(e, searchResult);
return(true);
});
}
catch (Exception e)
{
Log.Info("Search failed {0}: {1}{2}", baseUri, Environment.NewLine, User(searchBody));
Log.Info(e);
ProcessError(e, searchResult);
}
UpdateLastActivity();
return(searchResult);
}