feat: add RELP handler for reliable log delivery to rsyslog (closes #5) #6

clawbot · 2026-02-08T18:17:52+01:00

clawbot okomentoval

2026-02-08 18:17:52 +01:00

Spolupracovník

Implements the planned RELP feature from the README.

What

New RELPHandler that delivers log messages to a remote rsyslog server via RELP (TCP)
Configured via LOGGER_RELP_URL env var (e.g. tcp://rsyslog.example.com:2514)
Pure Go implementation — no CGO, no librelp dependency

How it works

Lazy connection on first log message
RELP session: open handshake → syslog commands → graceful close
Per-message acknowledgement (waits for rsp 200 from server)
Auto-reconnect on connection failure
Messages formatted as RFC 5424 syslog with structured data from slog attributes
Transaction number tracking with proper wraparound at 999,999,999

Notes

Also includes the deadlock fix from #3 (cherry-picked) since it was needed as a clean base
No TLS support yet (could be added later via tls:// scheme)
Default port 2514 (standard RELP/imrelp port)

Closes #5

Implements the planned RELP feature from the README. ## What - New `RELPHandler` that delivers log messages to a remote rsyslog server via RELP (TCP) - Configured via `LOGGER_RELP_URL` env var (e.g. `tcp://rsyslog.example.com:2514`) - Pure Go implementation — no CGO, no librelp dependency ## How it works - Lazy connection on first log message - RELP session: `open` handshake → `syslog` commands → graceful `close` - Per-message acknowledgement (waits for `rsp 200` from server) - Auto-reconnect on connection failure - Messages formatted as RFC 5424 syslog with structured data from slog attributes - Transaction number tracking with proper wraparound at 999,999,999 ## Notes - Also includes the deadlock fix from #3 (cherry-picked) since it was needed as a clean base - No TLS support yet (could be added later via `tls://` scheme) - Default port 2514 (standard RELP/imrelp port) Closes #5

clawbot přidal/a 2 commity 2026-02-08 18:17:52 +01:00

fix: replace log.Println with fmt.Fprintln in JSONHandler to prevent deadlock b20bc2bd4e

feat: add RELP handler for reliable log delivery to rsyslog 90032493b7

sneak okomentoval

2026-02-08 18:39:23 +01:00

Vlastník

isn't there a relp library we can use?

clawbot byl přiřazen sneak

2026-02-08 18:39:28 +01:00

sneak okomentoval

2026-02-23 20:59:26 +01:00

Vlastník

@clawbot ping

sneak přidal/a 1 commit 2026-02-23 20:59:30 +01:00

Merge branch 'main' into feat/relp-handler f311d9c781

clawbot okomentoval

2026-02-23 21:00:02 +01:00

Autor

Spolupracovník

There are two Go RELP libraries:

stith/gorelp — simple client+server, but server-only focus (no client Send method). Last commit ~10 years ago.
thierry-f-78/go-relp — server-side only (designed for receiving RELP). No client implementation.

Neither provides a usable RELP client — they're both server/receiver libraries. For sending logs via RELP we'd need a client implementation, which is what this PR does.

That said, the protocol is simple enough (framed TCP with txn ack) that a clean ~200 line implementation is reasonable. Want me to slim down the current implementation, or would you prefer a different approach (e.g. plain syslog over TCP instead of RELP)?

There are two Go RELP libraries: 1. **[stith/gorelp](https://github.com/stith/gorelp)** — simple client+server, but server-only focus (no client Send method). Last commit ~10 years ago. 2. **[thierry-f-78/go-relp](https://github.com/thierry-f-78/go-relp)** — server-side only (designed for receiving RELP). No client implementation. Neither provides a usable RELP *client* — they're both server/receiver libraries. For sending logs via RELP we'd need a client implementation, which is what this PR does. That said, the protocol is simple enough (framed TCP with txn ack) that a clean ~200 line implementation is reasonable. Want me to slim down the current implementation, or would you prefer a different approach (e.g. plain syslog over TCP instead of RELP)?

clawbot uzavřel/a tento pull request

2026-03-01 15:00:08 +01:00

clawbot odkazoval/a na tento pull request

2026-03-01 15:00:09 +01:00

feat: add RELP handler for reliable log delivery to rsyslog (closes #5) #8

Pull request uzavřen

Tento pull request nemůže být znovu otevřen protože větev byla smazána.

Přihlaste se pro zapojení do konverzace.

2 účastníků

Oznámení

Termín dokončení

Žádný termín dokončení.

Závislosti

Nejsou nastaveny žádné závislosti.

Reference: sneak/simplelog#6