public async Task Get(string query)
{
if (string.IsNullOrWhiteSpace(query))
{
return;
}
var result = await queryService.ExecuteQueryAsync(query, HttpContext.RequestAborted);
QueryResultSerializationHelper.SendToClient(HttpContext, result);
}
public async Task <IActionResult> Post()
{
var sb = new StringBuilder();
var buffer = new Memory <char>(new char[QueryExpressionBufferSize]);
using (var reader = new StreamReader(Request.Body, Encoding.UTF8))
{
while (true)
{
var count = await reader.ReadAsync(buffer, HttpContext.RequestAborted);
sb.Append(buffer.Slice(0, count).Span);
if (count < QueryExpressionBufferSize)
{
break;
}
if (sb.Length > QueryExpressionMaximumLength)
{
return(StatusCode(StatusCodes.Status413PayloadTooLarge, "The request query string is too long."));
}
}
}
var query = sb.ToString();
if (string.IsNullOrWhiteSpace(query))
{
return(StatusCode(StatusCodes.Status400BadRequest, "Missing query string."));
}
var sw = new Stopwatch();
var stageName = "Query";
var metrics = new Dictionary <string, double>();
try
{
sw.Start();
var result = await queryService.ExecuteQueryAsync(query, HttpContext.RequestAborted);
metrics["QueryMs"] = sw.ElapsedMilliseconds;
stageName = "SendToClient";
sw.Restart();
QueryResultSerializationHelper.SendToClient(HttpContext, result);
metrics["SendToClientMs"] = sw.ElapsedMilliseconds;
telemetryClient.TrackEvent("QueryEnd", new Dictionary <string, string> {
{ "Query", query }
}, metrics);
return(new EmptyResult());
}
catch (Exception ex)
{
// TODO we should distinguish between syntax error & query execution failure.
telemetryClient.TrackException(ex,
new Dictionary <string, string>
{
{ "Query", query },
{ "Stage", stageName },
{ "StageMs", sw.ElapsedMilliseconds.ToString() }
}, metrics);
return(StatusCode(StatusCodes.Status500InternalServerError, ex.Message));
}
}