Agent-side of Docker container-log collection (milestone 79). Each interval the
agent fetches new log lines per running container over the local Docker socket,
demuxes the multiplexed stream, and folds sample["docker_logs"] into the same
push as metrics — no inbound channel needed.
- since-cursor per container kept in rate-state; a container's first interval
seeds from a short tail, then fetches incrementally via ?since=<cursor>
- _docker_request_raw + _demux_docker_logs + RFC3339Nano ts parsing (stdlib,
TTY/unframed fallback); one row per (stream, ts, line)
- per-batch byte cap with a truncation marker; logs are dropped (never buffered)
across a backoff so an outage keeps metrics but not stale logs
- docker_logs_enabled (default on) + docker_log_exclude per-host config keys
- AGENT_VERSION 1.6.0 -> 1.7.0
Server ignores the new sample key until the ingest step lands, so this commit is
CI-safe on its own.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CAGR73DUowdVFVvYzLXC5C
bvandeusen
c95194747d