Inherited sandbox and approval events were part of the constructor seed. Session.firstLiveSeq classifies every constructor event as replayed history, so telemetry adoption skipped these child-only creation facts even though no parent or prior process had exported them.
Capture the parent overrides at the same synchronous delegation boundary, but append the events during the child factory setup while the session is still unpublished. They remain ordered after fork history, persist with the first child batch, and retain last-event-wins behavior while landing on the live side of the telemetry boundary. This uses the existing setup and session append contracts instead of adding another seed category or telemetry special case.
Add regression coverage for exporting an unpublished suffix without re-exporting constructor history, assert the spawn and fork firstLiveSeq boundaries, and restore the public seed documentation to replay/fork history only.
Review finding, pinned red-first: the SDK accepts
processor.maxExportBatchSize <= 0 (or fractional), but its shutdown
drain then splices empty batches without consuming the queue —
disposing telemetry hangs forever whenever records are queued. The
constructor now rejects a non-positive-integer batch size before
building the SDK processor, per the misconfiguration-fails-loud rule;
everything else in the processor block remains the SDK's verbatim
passthrough.
Review finding: synthetic turn closers written by SessionPersistence
.load() at crash-resume sit below firstLiveSeq and are never exported,
leaving the remote turn unbalanced. Kept deliberately — exporting a
synthetic closer cannot complete a turn whose real tail records died
in the crashed process's queue; it can only make an incomplete turn
look closed. The OTel README now states the receiver rule (a
never-closed turn on a resumed stream marks the previous process dying
inside it; a later clean shutdown marker attests only to the resumed
process's exit), and the revival Agent Note records why the repair
suffix stays local.
A cursor-less adoption (process restart + resume, fork, seam-module
reload) replayed the session's full log from seq 0, re-exporting
history that already left the process — a resume re-billed its entire
stored log on every restart, and a fork re-shipped the parent's prefix
under the child's id, doubling query-time counts on OTLP backends with
no native ingest dedupe.
dsh-session now exposes the fact the constructor already validated but
discarded: Session.firstLiveSeq, the constructor-seed length — the
first seq appended in this process. header.seedLength cannot serve
here: it is the durable fork-lineage boundary, and a resumed session's
constructor seed is its full stored log while the header keeps the
original fork value (llm-replay and session-query-sqlite depend on
that meaning). Constructor seeds also never publish on the
session/event firehose, so adoption replaying them was inconsistent
with the system's own publication semantics.
Adoption's cursor-less fallback starts at firstLiveSeq; seed events
still feed the chunk projection, so mid-step continuations re-drop
after a resume. Fork streams are no longer self-contained: records now
carry session.seed_length (with the existing session.parent_id) so
receivers stitch the child's stream onto the parent's. Accepted cost,
consistent with at-most-once delivery and recorded in the revival
Agent Note: a resume no longer backfills records a previous process
failed to deliver — a deployment with that requirement needs the
deferred outbox, not replay.
Pinned red-first: seeded adoption exports nothing (assertion reversed
from the prior seed-readback test, obsolete behavior changed with its
test), resume-shaped seed rebuilds the projection without exporting,
and fork records carry the stitch attributes.
Three review rounds each found a new silent-loss path in the same
wrapper state (dispose racing an in-flight flush, overlapping hints
displacing the retained promise, the provider's fixed 30s flush timeout
rejecting while the processor still drains). Every path exists only
because forwarding the seam's turn-boundary hint to forceFlush() made
this backend the process's second flusher against undocumented SDK
internals from the upstream experimental tree.
The backend now implements no flush(): the batch processor is the only
flusher, its scheduledDelayMillis (already deployment-tunable through
the processor passthrough) governs export cadence, and shutdown()'s
drain is complete by construction. The two race-pin tests collapse into
one dispose-during-in-flight-batch drain pin; the seam's optional
flush() contract now tells implementers they own the concurrent-flush/
shutdown interaction. Removal rationale and the reinstatement trigger
(a stated turn-boundary latency requirement scheduledDelayMillis cannot
meet — and then via the processor's own forceFlush(), never the
provider's timeout-wrapped one) are recorded in the revival Agent Note,
both languages.
Resolutions: regenerate docs/capability-seams.md (the only conflict);
master widened the bilingual pairing scope to package READMEs, so this
merge adds the Chinese counterparts and i18n records for the three
telemetry READMEs and patches packages/README.zh.md with the telemetry
group row.
Review finding (Codex P1), pinned red-first: the marker was tied to
telemetry-plugin lifetime, but receivers key crash detection on its
absence per session. A normally closed session in a long-running host
retired silently (classified as a crash once stale), while a telemetry
reload marked every still-live session as cleanly ended.
The session/disposed handler now emits the marker at the session's own
termination edge before retiring it; the dispose-time sweep only marks
sessions still alive at application teardown (their own edge would fire
unobserved). READMEs restate the marker semantics: telemetry stopped
observing cleanly — a marker followed by more session events is a
telemetry reload, not a session restart.
Second review round, both pinned red-first:
- Overlapping turn-boundary flush hints now JOIN the outstanding flush
promise (Promise.all) instead of displacing it: the SDK's
concurrent-flush guard resolves an overlapping forceFlush()
immediately, so retaining only the latest promise let shutdown()
proceed while the first export was still in flight — the same silent
drop the single-flush fix closed.
- Adoption replay contains failures per event, matching the firehose:
one rejected record is withheld fail-closed while the rest of the
historical log still hands off. Wrapping the whole loop let a single
failure silently skip the remainder on an already-adopted session.
Three review findings, each pinned by a red test first:
- The OTel backend retains the latest turn-boundary flush promise and
shutdown() awaits it before provider.shutdown(): the SDK's
concurrent-flush guard makes the shutdown-internal flush return early
while one is in flight, silently dropping everything enqueued after
the flush snapshot (including the coordinator's dispose-time shutdown
markers).
- The coordinator retires sessions from the adopted set on
session/disposed (mirroring the persistence coordinator): a long-lived
backend no longer retains closed sessions and their event logs, and
final unload no longer stamps shutdown markers for dead sessions.
- The exporter config passes through whole to OTLPLogExporter and its
type/JSDoc now advertise the full OTLPExporterNodeConfigBase shape:
rebuilding url/headers only silently dropped documented SDK options
(timeoutMillis, compression, keepAlive, ...).
tests/otel.e2e.ts self-skipped on $DSH_OTLP_E2E_ENDPOINT, which nothing in
the repo sets — it never ran; the mock-collector wire spec and the keyless
Loader-composition e2e already cover the pipeline both ways.
The severityOf compact/end probe parsed another package's merged event
shape by string comparison — an untyped cross-package contract that breaks
silently — and its only consumer was the test's own stand-in declaration.
Unknown event types now uniformly fall through as info; outcome semantics
stay with the owning package.
The seam keeps the telemetry/redact scrubbing interface but ships no rules
of its own: the innermost next() passes records through unchanged, and
deployments mount their rules as waterfall listeners. As an SDK we cannot
know which patterns are secrets in a given deployment; a shipped list
invites false confidence while catching only known shapes, and false
positives would corrupt exported bodies. Mechanism stays with the seam,
policy moves to the deployment; both READMEs and the Agent Note state the
raw-export default plainly.
The loader-composition e2e now mounts a deployment-style rule fixture and
pins the same wire behavior: secret absent, placeholder present, canonical
log untouched.
Revive the reviewed session-telemetry packages from the closed
session-telemetry-otlp-rfc branch (PR #222/#231) on current master, renamed
to @deepseek-ai/dsh-session-telemetry{,-otel} (the SDK component-telemetry
package holds the dsh-telemetry name).
Delta over the branch version: every record now passes a telemetry/redact
waterfall between projection and emit() — the innermost next() applies a
non-configurable conservative credential-shape rule set, listeners stack
stricter rules, a throwing rule withholds the record fail-closed, and the
canonical log is never rewritten. This answers the export-side concern that
closed PR #222; the boundary axiom (our aspect ends at emit(); delivery is
the reporting SDK's) is unchanged, and the runtime-telemetry RFC's outbox /
readCommitted lane is recorded as deferred in the Agent Note.
Covered by seam/redact/OTel-wire unit tiers (100% per-file) and a keyless
Loader-composition e2e that boots the examples fixture against a mock OTLP
collector and pins redaction on the wire plus the untouched canonical log.
Tianyi Cui
_Kerman
kingwl