private void SendMetricRequest(WriteRequest req)
{
var url = Configuration.GetValue <string>("prom_write_url");
var token = Configuration.GetValue <string>("prom_write_token");
if (!String.IsNullOrEmpty(url))
{
MemoryStream stream = new MemoryStream();
req.WriteTo(stream);
byte[] arrIn = stream.ToArray();
byte[] arr = SnappyCodec.Compress(arrIn);
var handler = new HttpClientHandler();
var httpClient = new HttpClient(handler);
HttpRequestMessage requestMessage = new HttpRequestMessage(new HttpMethod("POST"), url);
requestMessage.Headers.Add("Authorization", $"Bearer {token}");
requestMessage.Content = new ByteArrayContent(arr);
requestMessage.Content.Headers.ContentType = new MediaTypeHeaderValue("application/x-protobuf");
requestMessage.Content.Headers.ContentEncoding.Add("snappy");
HttpResponseMessage response = httpClient.SendAsync(requestMessage).Result;
}
}
// This function should be called in busy state (state == 1)
void BuildWriteBuffer()
{
Fx.Assert(this.state == 1, "Should be busy at this time");
Fx.Assert(this.writeBuffer.Length == 0, "Cannot have payload in the write buffer at this point");
Fx.Assert(this.firstRequest != null && this.lastRequest != null, "Must have buffer to write at this time");
int bufferSize = this.writeBuffer.Capacity;
// take a snapshot so we don't have to lock
WriteRequest first = this.firstRequest;
WriteRequest last = this.lastRequest;
WriteRequest request = first;
WriteRequest lastCompleted = null;
while (true)
{
if (!request.WriteTo(this.writeBuffer))
{
break;
}
lastCompleted = request;
request = request.Next;
if (lastCompleted == last)
{
break;
}
}
this.writeAsyncEventArgs.SetBuffer(this.writeBuffer.Buffer, this.writeBuffer.Offset, this.writeBuffer.Length);
if (lastCompleted != null)
{
this.writeAsyncEventArgs.UserToken = first;
lock (this.syncRoot)
{
this.firstRequest = lastCompleted.Next;
lastCompleted.Next = null;
if (this.firstRequest == null)
{
this.lastRequest = null;
}
}
}
}