Files
rose-ash/lib/agentic/trace.sx
giles b92095ccaf agentic-sx Phase 3: trace — console output as attached CID objects (TDD)
Per-agent buffer = persist append-only log stream + kv drain cursor;
commit-with-trace! drains everything-since-last-commit into a console-trace
object and binds it git-note style (ref notes/trace/<commit-cid> -> trace
cid). Trace never enters the commit tree; binding is a re-bindable ref layer
over immutable objects; failed commits keep the buffer; plain commit! leaves
binding to the agent. 35/35 (153/153 total).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-03 12:58:06 +00:00

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; lib/agentic/trace.sx — agentic-sx Phase 3: console traces as ATTACHED
; content-addressed objects. An agent's console/tool output accumulates in a
; per-agent append-only persist log stream; the commit verb drains everything
; since the last commit into a console-trace object and binds it to the new
; commit git-note style: ref "notes/trace/<commit-cid>" -> trace cid. The
; trace is NOT in the commit's tree — attaching never changes the commit cid,
; and the note is a re-bindable ref layer over immutable objects.
; Granularity = the commit, agent-chosen: whatever was logged since the last
; drain travels with the next commit.
; Requires: lib/agentic/branch.sx (and its deps).
; ---- buffer stream + drain cursor (namespaced under the repo prefix) ----
(define
agentic/trace-stream
(fn
(sp agent)
(str (get (agentic/space-repo sp) :prefix) "/trace/" agent)))
(define
agentic/trace-cursor-key
(fn
(sp agent)
(str (get (agentic/space-repo sp) :prefix) "/trace-cursor/" agent)))
; append one console/tool entry to the agent's buffer => true
(define
agentic/trace!
(fn
(sp agent kind text)
(begin
(persist/append
(git/repo-db (agentic/space-repo sp))
(agentic/trace-stream sp agent)
"trace-entry"
0
(agentic/trace-entry kind text))
true)))
; entries logged since the last drain, oldest first
(define
agentic/trace-pending
(fn
(sp agent)
(let
((db (git/repo-db (agentic/space-repo sp))))
(let
((cur (persist/kv-get db (agentic/trace-cursor-key sp agent))))
(map
(fn (e) (persist/event-data e))
(persist/read-from
db
(agentic/trace-stream sp agent)
(+ (if (nil? cur) 0 cur) 1)))))))
; advance the drain cursor to the stream's high-water mark
(define
agentic/trace-mark!
(fn
(sp agent)
(let
((db (git/repo-db (agentic/space-repo sp))))
(begin
(persist/kv-put
db
(agentic/trace-cursor-key sp agent)
(persist/last-seq db (agentic/trace-stream sp agent)))
true))))
; ---- git-note-style binding: commit cid -> trace cid ----
(define
agentic/trace-note-ref
(fn (commit-cid) (str "notes/trace/" commit-cid)))
; write the trace object and bind it to the commit => trace cid | {:error}
(define
agentic/attach-trace!
(fn
(sp commit-cid trace-obj)
(let
((repo (agentic/space-repo sp)))
(if
(not (agentic/console-trace? trace-obj))
{:error "not-a-console-trace"}
(let
((tcid (git/write repo trace-obj)))
(begin
(git/ref-set! repo (agentic/trace-note-ref commit-cid) tcid)
tcid))))))
(define
agentic/trace-cid-for
(fn
(sp commit-cid)
(git/ref-get (agentic/space-repo sp) (agentic/trace-note-ref commit-cid))))
(define
agentic/trace-for
(fn
(sp commit-cid)
(let
((tcid (agentic/trace-cid-for sp commit-cid)))
(if (nil? tcid) nil (git/read (agentic/space-repo sp) tcid)))))
; ---- the commit verb with trace binding ----
; commit! then drain the buffer into an attached console-trace.
; => {:cid cid :trace tcid} | {:cid cid} when nothing was logged
; | commit!'s {:error ...}/{:conflict ...} passthrough (buffer kept)
(define
agentic/commit-with-trace!
(fn
(sp agent kind files meta)
(let
((cid (agentic/commit! sp agent kind files meta)))
(if
(dict? cid)
cid
(let
((entries (agentic/trace-pending sp agent)))
(if
(= (len entries) 0)
{:cid cid}
(let
((tcid (agentic/attach-trace! sp cid (agentic/console-trace entries {:agent agent :commit cid}))))
(begin (agentic/trace-mark! sp agent) {:trace tcid :cid cid}))))))))
; (commit-cid trace-cid) pairs for the agent's session, newest first,
; commits without a bound trace omitted
(define
agentic/session-traces
(fn
(sp agent)
(filter
(fn (p) (not (nil? (nth p 1))))
(map
(fn (cid) (list cid (agentic/trace-cid-for sp cid)))
(agentic/session-log sp agent)))))