public ActionResult PostInfluxTelemetry([FromBody] InfluxTelemetry telemetryPackage)
{
// verify in coming data
if (telemetryPackage?.NodeId == null ||
string.IsNullOrWhiteSpace(telemetryPackage.Signature) ||
telemetryPackage.Payload == null ||
telemetryPackage.Payload.Count == 0)
{
Console.WriteLine("bad request");
return(BadRequest());
}
// Get Node key from keystore
string nodeKey;
try
{
nodeKey = _keyStore.GetKeyForNode(telemetryPackage.NodeId);
}
catch (KeyNotFoundException)
{
Console.WriteLine($"Node Unknown: {telemetryPackage.NodeId}");
return(StatusCode(403));
}
// Verify Signature
string signedPayload = string.Join("", telemetryPackage.Payload);
bool signatureValid = SignatureVerifier.IsSignatureValid(signedPayload, telemetryPackage.Signature, nodeKey);
if (!signatureValid)
{
Console.WriteLine($"Bad signature from node: {telemetryPackage.NodeId}");
return(StatusCode(403));
}
Console.WriteLine($"Accepted telemetry from {telemetryPackage.NodeId} [{telemetryPackage.Payload.Count} metrics]");
// Signature valid - record to db
if (_influx.Enqueue(telemetryPackage.Payload, true))
{
return(Accepted());
}
else
{
return(StatusCode(400));
}
}
