Module headers 

For message headers and latency tracking. Message headers and latency tracking functionality for the mailbox system.

This module provides header attributes and utilities for message metadata, including latency tracking timestamps used to measure message processing times.

Statics

RUST_MESSAGE_TYPE

The rust type of the message.

SENDER_ACTOR_ID_HASH

Hashed ActorId of the message sender, injected in post_unchecked().

SEND_TIMESTAMP

Send timestamp for message latency tracking

TELEMETRY_MESSAGE_ID

Telemetry message ID for correlating lifecycle events, injected in post_unchecked().

TELEMETRY_PORT_ID

Port index the message was delivered to, injected in post_unchecked().

Functions

log_message_latency_if_sampling

This function checks the configured sampling rate and, if the random sample passes, calculates the latency between the send timestamp and the current time, then records the latency metric with the associated actor ID.

set_rust_message_type

Set the send timestamp for latency tracking if timestamp not already set.

set_send_timestamp

Set the send timestamp for latency tracking if timestamp not already set.