github.com/bakins/otlptcp

otlptcp receiver

otlptcp is a receiver for opentelemetry-collector-contrib that receives traces, metrics, and logs via a tcp listener.

Config

Example:

receivers:
  otlptcp:
    listen_address: 0.0.0.0:14317

exporters:
  otlp:
    endpoint: otelcol:4317

service:
  pipelines:
    traces:
      receivers: [otlptcp]
      exporters: [otlp]
    metrics:
      receivers: [otlptcp]
      exporters: [otlp]
    logs:
      receivers: [otlptcp]
      exporters: [otlp]

Availible configuration options:

• listen_address - listening address in the form of <ip>:port. default is 0.0.0.0:14317
• max_message_size - maximum size of a single message. Default to 1m.
• listen_network - listent network. Only tcp is supported.

Usage in collector

See https://opentelemetry.io/docs/collector/custom-collector/

Protocol

Each message is prefixed with 5 bytes.

The first byte is an unsigned 8 bit integer that denotes the type of the message. Valid values are:

• 1 - trace request
• 2 - metric request
• 3 - log request

The next 4 bytes should be an unsigned 32 bit integer in big-endian order.

The message is a protocol buffer encoded request of the appropriate message type.