private async Task <IQueryResult <T> > ExecuteQuery <T>(QueryOptions options, ITypeSerializer serializer, IInternalSpan span)
{
// try get Query node
var queryUri = _serviceUriProvider.GetRandomQueryUri();
span.WithRemoteAddress(queryUri);
using var encodingSpan = span.StartPayloadEncoding();
var body = options.GetFormValuesAsJson();
encodingSpan.Dispose();
_logger.LogDebug("Sending query {contextId} to node {endpoint}.", options.CurrentContextId, queryUri);
QueryResultBase <T> queryResult;
using var content = new StringContent(body, System.Text.Encoding.UTF8, MediaType.Json);
try
{
using var dispatchSpan = span.StartDispatch();
var response = await HttpClient.PostAsync(queryUri, content, options.Token).ConfigureAwait(false);
dispatchSpan.Dispose();
var stream = await response.Content.ReadAsStreamAsync().ConfigureAwait(false);
if (serializer is IStreamingTypeDeserializer streamingDeserializer)
{
queryResult = new StreamingQueryResult <T>(stream, streamingDeserializer);
}
else
{
queryResult = new BlockQueryResult <T>(stream, serializer);
}
queryResult.HttpStatusCode = response.StatusCode;
queryResult.Success = response.StatusCode == HttpStatusCode.OK;
//read the header and stop when we reach the queried rows
await queryResult.InitializeAsync(options.Token).ConfigureAwait(false);
if (response.StatusCode != HttpStatusCode.OK || queryResult.MetaData?.Status != QueryStatus.Success)
{
var currentContextId = options.CurrentContextId ?? Guid.Empty.ToString();
_logger.LogDebug("Request {currentContextId} has failed because {status}.",
currentContextId, queryResult.MetaData?.Status);
if (queryResult.ShouldRetry(EnhancedPreparedStatementsEnabled))
{
if (queryResult.Errors.Any(x => x.Code == 4040 && EnhancedPreparedStatementsEnabled))
{
//clear the cache of stale query plan
var statement = options.StatementValue ?? string.Empty;
if (_queryCache.TryRemove(statement, out var queryPlan))
{
_logger.LogDebug("Query plan is stale for {currentContextId}. Purging plan {queryPlanName}.", currentContextId, queryPlan.Name);
}
;
}
_logger.LogDebug("Request {currentContextId} is being retried.", currentContextId);
return(queryResult);
}
var context = new QueryErrorContext
{
ClientContextId = options.CurrentContextId,
Parameters = options.GetAllParametersAsJson(),
Statement = options.ToString(),
Message = GetErrorMessage(queryResult, currentContextId, response.StatusCode),
Errors = queryResult.Errors,
HttpStatus = response.StatusCode,
QueryStatus = queryResult.MetaData?.Status ?? QueryStatus.Fatal
};
if (queryResult.MetaData?.Status == QueryStatus.Timeout)
{
if (options.IsReadOnly)
{
throw new AmbiguousTimeoutException
{
Context = context
};
}
throw new UnambiguousTimeoutException
{
Context = context
};
}
queryResult.ThrowExceptionOnError(context);
}
}
catch (OperationCanceledException e)
{
var context = new QueryErrorContext
{
ClientContextId = options.CurrentContextId,
Parameters = options.GetAllParametersAsJson(),
Statement = options.ToString(),
HttpStatus = HttpStatusCode.RequestTimeout,
QueryStatus = QueryStatus.Fatal
};
_logger.LogDebug(LoggingEvents.QueryEvent, e, "Request timeout.");
if (options.IsReadOnly)
{
throw new UnambiguousTimeoutException("The query was timed out via the Token.", e)
{
Context = context
};
}
throw new AmbiguousTimeoutException("The query was timed out via the Token.", e)
{
Context = context
};
}
catch (HttpRequestException e)
{
_logger.LogDebug(LoggingEvents.QueryEvent, e, "Request canceled");
var context = new QueryErrorContext
{
ClientContextId = options.CurrentContextId,
Parameters = options.GetAllParametersAsJson(),
Statement = options.ToString(),
HttpStatus = HttpStatusCode.RequestTimeout,
QueryStatus = QueryStatus.Fatal
};
throw new RequestCanceledException("The query was canceled.", e)
{
Context = context
};
}
_logger.LogDebug($"Request {options.CurrentContextId} has succeeded.");
return(queryResult);
}
private async Task <IQueryResult <T> > ExecuteQuery <T>(QueryOptions options, IDataMapper dataMapper)
{
// try get Query node
var queryUri = _serviceUriProvider.GetRandomQueryUri();
var body = options.GetFormValuesAsJson();
QueryResultBase <T> queryResult;
using (var content = new StringContent(body, System.Text.Encoding.UTF8, MediaType.Json))
{
try
{
var response = await HttpClient.PostAsync(queryUri, content, options.Token).ConfigureAwait(false);
var stream = await response.Content.ReadAsStreamAsync().ConfigureAwait(false);
if (_serializer is IStreamingTypeDeserializer streamingDeserializer)
{
queryResult = new StreamingQueryResult <T>(stream, streamingDeserializer);
}
else
{
queryResult = new BlockQueryResult <T>(stream, _serializer);
}
queryResult.HttpStatusCode = response.StatusCode;
queryResult.Success = response.StatusCode == HttpStatusCode.OK;
//read the header and stop when we reach the queried rows
await queryResult.InitializeAsync(options.Token).ConfigureAwait(false);
if (response.StatusCode != HttpStatusCode.OK || queryResult.MetaData.Status != QueryStatus.Success)
{
Log.LogDebug($"Request {options.CurrentContextId} has failed because {queryResult.MetaData.Status}.");
if (queryResult.ShouldRetry())
{
return(queryResult);
}
var context = new QueryErrorContext
{
Message = queryResult.Message,
Errors = queryResult.Errors,
HttpStatus = response.StatusCode,
QueryStatus = queryResult.MetaData.Status
};
if (queryResult.MetaData.Status == QueryStatus.Timeout)
{
if (options.IsReadOnly)
{
throw new AmbiguousTimeoutException
{
Context = context
};
}
throw new UnambiguousTimeoutException
{
Context = context
};
}
queryResult.ThrowExceptionOnError(context);
}
}
catch (OperationCanceledException e)
{
Log.LogDebug(LoggingEvents.QueryEvent, e, "Request timeout.");
if (options.IsReadOnly)
{
throw new UnambiguousTimeoutException("The query was timed out via the Token.", e);
}
throw new AmbiguousTimeoutException("The query was timed out via the Token.", e);
}
catch (HttpRequestException e)
{
Log.LogDebug(LoggingEvents.QueryEvent, e, "Request canceled");
throw new RequestCanceledException("The query was canceled.", e);
}
}
Log.LogDebug($"Request {options.CurrentContextId} has succeeded.");
return(queryResult);
}
private async Task <IQueryResult <T> > ExecuteQuery <T>(QueryOptions options, ITypeSerializer serializer, IRequestSpan span)
{
var currentContextId = options.CurrentContextId ?? DefaultClientContextId;
QueryErrorContext ErrorContextFactory(QueryResultBase <T> failedQueryResult, HttpStatusCode statusCode)
{
// We use a local function to capture context like options and currentContextId
return(new()
{
ClientContextId = options.CurrentContextId,
Parameters = options.GetAllParametersAsJson(),
Statement = options.ToString(),
Message = GetErrorMessage(failedQueryResult, currentContextId, statusCode),
Errors = failedQueryResult.Errors,
HttpStatus = statusCode,
QueryStatus = failedQueryResult.MetaData?.Status ?? QueryStatus.Fatal
});
}
// try get Query node
Uri queryUri = options.LastDispatchedNode ?? _serviceUriProvider.GetRandomQueryUri();
span.WithRemoteAddress(queryUri);
using var encodingSpan = span.EncodingSpan();
using var content = options.GetRequestBody(serializer);
encodingSpan.Dispose();
_logger.LogDebug("Sending query {contextId} to node {endpoint}.", options.CurrentContextId, queryUri);
QueryResultBase <T> queryResult;
try
{
using var dispatchSpan = span.DispatchSpan(options);
using var httpClient = CreateHttpClient(options.TimeoutValue);
var response = await httpClient.PostAsync(queryUri, content, options.Token).ConfigureAwait(false);
dispatchSpan.Dispose();
var stream = await response.Content.ReadAsStreamAsync().ConfigureAwait(false);
if (serializer is IStreamingTypeDeserializer streamingDeserializer)
{
queryResult = new StreamingQueryResult <T>(stream, streamingDeserializer, ErrorContextFactory);
}
else
{
queryResult = new BlockQueryResult <T>(stream, serializer);
}
queryResult.HttpStatusCode = response.StatusCode;
queryResult.Success = response.StatusCode == HttpStatusCode.OK;
//read the header and stop when we reach the queried rows
await queryResult.InitializeAsync(options.Token).ConfigureAwait(false);
if (response.StatusCode != HttpStatusCode.OK || queryResult.MetaData?.Status != QueryStatus.Success)
{
_logger.LogDebug("Request {currentContextId} has failed because {status}.",
currentContextId, queryResult.MetaData?.Status);
if (queryResult.ShouldRetry(EnhancedPreparedStatementsEnabled))
{
queryResult.NoRetryException = queryResult.CreateExceptionForError(ErrorContextFactory(queryResult, response.StatusCode));
if (queryResult.Errors.Any(x => x.Code == 4040 && EnhancedPreparedStatementsEnabled))
{
//clear the cache of stale query plan
var statement = options.StatementValue ?? string.Empty;
if (_queryCache.TryRemove(statement, out var queryPlan))
{
_logger.LogDebug("Query plan is stale for {currentContextId}. Purging plan {queryPlanName}.", currentContextId, queryPlan.Name);
}
}
_logger.LogDebug("Request {currentContextId} is being retried.", currentContextId);
return(queryResult);
}
var context = ErrorContextFactory(queryResult, response.StatusCode);
if (queryResult.MetaData?.Status == QueryStatus.Timeout)
{
if (options.IsReadOnly)
{
throw new AmbiguousTimeoutException
{
Context = context
};
}
throw new UnambiguousTimeoutException
{
Context = context
};
}
queryResult.ThrowExceptionOnError(context);
}
else if (options.StatementValue == TransactionsBeginWork)
{
// Internal support for Transactions query node affinity
// If the result has a "txid" row, grab the value and add it to the affinity map.
queryResult.MetaData.LastDispatchedToNode = queryUri;
}
}
catch (OperationCanceledException e)
{
//treat as an orphaned response
span.LogOrphaned();
var context = new QueryErrorContext
{
ClientContextId = options.CurrentContextId,
Parameters = options.GetAllParametersAsJson(),
Statement = options.ToString(),
HttpStatus = HttpStatusCode.RequestTimeout,
QueryStatus = QueryStatus.Fatal
};
_logger.LogDebug(LoggingEvents.QueryEvent, e, "Request timeout.");
if (options.IsReadOnly)
{
throw new UnambiguousTimeoutException("The query was timed out via the Token.", e)
{
Context = context
};
}
throw new AmbiguousTimeoutException("The query was timed out via the Token.", e)
{
Context = context
};
}
catch (HttpRequestException e)
{
_logger.LogDebug(LoggingEvents.QueryEvent, e, "Request canceled");
//treat as an orphaned response
span.LogOrphaned();
var context = new QueryErrorContext
{
ClientContextId = options.CurrentContextId,
Parameters = options.GetAllParametersAsJson(),
Statement = options.ToString(),
HttpStatus = HttpStatusCode.RequestTimeout,
QueryStatus = QueryStatus.Fatal
};
throw new RequestCanceledException("The query was canceled.", e)
{
Context = context
};
}
_logger.LogDebug($"Request {options.CurrentContextId} has succeeded.");
return(queryResult);
}