FluentNetting 0.0.1

FluentNetting - fluentd / fluent-bit forwarded server

feature

'FluentNetting' is fluent forwarding message received server that is based on Fluent forward protocol v1 specification.
This library is supported for both fluentd and fluent-bit.

supported message mode (format)

• Message Mode
• Forward Mode
• PackedForward Mode
• CompressedPackedForward Mode

supported configuration

• Security forwarding authorization, HELO, PING and PONG (not tls, not username/password, only self_hostname/shared_key).
• Udp heartbeat.

how to use

(data flow)

client ---(forward)---> fluend or fluent-bit ---(forward)---> server used by FluentNetting

callback

public class ExampleCallback : IFnCallback
{
    public void Receive(string tag, List<FnMessageEntry> entries)
    {
        Console.WriteLine($"tag:{tag}, entries:[{string.Join(", ", entries.Select(e => $"{{{e}}}"))}]");
    }
}

server

var server = new FnServer(new ExampleCallback())
{
    // default - not authrization, enable 'RequireAck', disable 'Keepalive'
    Config = new FnConfig(),
    // default - tcp timeout 65 sec, udp timeout 15 sec
    SettingClient = new FnSettingClient(),
    // default - listening on tcp://0.0.0.0:8710, udp://0.0.0.0:8710
    SettingServer = new FnSettingServer()
};
server.Start();
server.WaitFor();

fluent configuration (fluentd or fluent-bit in a same host)

(fluentd)

<source>
  @type forward
  port 24224
</source>

<match **>
  @type forward  
  send_timeout 60s
  recover_wait 10s
  heartbeat_type udp
  heartbeat_interval 5s
  phi_threshold 16
  hard_timeout 60s
  require_ack_response

  <server>
    host {{ your server address }}
    port 8710
  </server>

  buffer_type file
  buffer_path /fluentd/log/buffer
  buffer_chunk_limit 1m
  retry_limit 3
  flush_interval 1m
</match>

(fluent-bit)

[SERVICE]
    Flush         5
    Daemon        off
    Log_Level     info
    storage.path  /fluent-bit/log

[INPUT]
    Name               forward
    Listen             0.0.0.0
    Port               24224
    storage.type       filesystem
    Buffer_Chunk_Size  1M
    Buffer_Max_Size    6M

[OUTPUT]
    Name                  forward
    Match                 *
    Host                  {{ your server address }}
    Port                  8710
    Require_ack_response  true
    Send_options          true

client - csharp used by Serilog

var options = new FluentdSinkOptions("your fluentd or fluent-bit server address", 24224, "tag.example");
var log = new LoggerConfiguration().WriteTo.Fluentd(options).CreateLogger();
log.Information("hello {0}!", "world");

In detail, confirm example.

motivated and referenced

• influent - java fluentd forward server.
• MessagePack-CSharp - csharp fastest message pack parser.