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quest: replan archives around SUBSCRIBE_ALL - #5883
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The archive line drops its catalog coupling: moq-archive becomes a Producer/Consumer pair fed by a new prefix-scoped moq-lite SUBSCRIBE_ALL (gating lite-07, with IETF SUBSCRIBE_TRACKS mapped onto it), objects are per-track and keyed by first group and pts beside a per-track .info, an optional DVR mode prunes them, and hosts serve stored broadcasts. Timelines remain only as an opt-in per-rendition `hls` field with aligned segments. Subscribe ranges gain a Time(pts) end for DVR seek. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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| - One cached LIST of the prefix is the index: it names the tracks and maps | ||
| any group or pts to an object. Each track's `.info` supplies its TRACK_INFO | ||
| properties before any media is read. A growing archive refreshes with | ||
| StartAfter from the newest known key, and re-reads a track's newest object, |
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When a recording contains multiple tracks, one global StartAfter marker misses every new object inserted under a lexicographically earlier track prefix. For example, after the marker advances into video/..., a later audio/... object sorts before it and is never returned, so the consumer silently stops following that track and can also miss newly added tracks. Refresh each track prefix independently or use a listing strategy that permits keys before the global high-water mark.
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Agreed, fixed in 7a426e6: the consumer now refreshes each track with its own cursor (a LIST of that track's key prefix StartAfter its newest key), plus a delimiter LIST of the broadcast prefix to find tracks added since. The test list gains two tracks where a new key sorts before the other track's cursor, and a track added mid-recording.
(Written by Claude Opus 5.5)
| - **Track properties.** A small `<prefix>/<track>/.info` holds the | ||
| properties TRACK_INFO needs (timescale, priority, max age), written before | ||
| the track's first object, so a consumer knows them before reading media. |
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When the source has a finite Publisher Max Age, persisting and replaying that value makes old archived groups unavailable: the range plan explicitly clamps historical reads to the publisher max age in quest/m1/subscribe-ranges/model.md, so an archive recorded from a typical short-cache live track will refuse its history after that interval. The consumer needs to advertise the archive's retention policy, usually no age limit, rather than reproduce the source cache bound.
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Agreed, fixed in 7a426e6: .info stores only timescale and priority. A served track advertises no Publisher Max Age limit (encoded 0), since the store's retention bounds what it holds, and DVR pruning is the publisher dropping early, which TRACK_INFO allows. The consumer tests gain history older than the source's max age still served. The producer still uses the source's max age to bound its recording delay, which is about the live cache.
(Written by Claude Opus 5.5)
| - **Resume.** Under a key prefix that already holds objects, each track | ||
| continues after its last stored group. |
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If the producer restarts while its last stored group is incomplete, continuing after that group permanently loses its remaining frames. This occurs for an oversized timed group split between objects and for an open untimed group whose object was rewritten by the bounded flush while the publisher continued writing the same group. Recovery must resume from the last persisted frame and merge or rewrite that group, with a restart-mid-group regression test.
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Agreed, fixed in 7a426e6: each track resumes at Position(last group, stored frame count) through its own floor on the track::Consumer SUBSCRIBE_ALL yields. A timed track writes the rest as a new object keyed by its first frame's pts; an untimed track reads its newest object back and keeps rewriting it in place. A completed group yields nothing more, so it is one rule. Resuming after the group and re-recording from frame 0 are listed as rejected. SUBSCRIBE_ALL's plan now names the per-track floor and a resumed mid-group test through a relay. The producer tests add a restart mid-group for a split timed group and an open untimed group.
(Written by Claude Opus 5.5)
| - **Keys.** `<prefix>/<track>/<first group>-<first pts>` for a timed track and | ||
| `<prefix>/<track>/<first group>` for an untimed one, zero-padded so keys sort | ||
| in content order. A sorted LIST answers group and time lookups; there is no |
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Track names are arbitrary strings and can contain / or begin with ., as the existing rs/moq-archive/src/path.rs tests demonstrate. Interpolating a raw name into this layout makes a/b indistinguishable from nested directories and permits names such as .info to collide with metadata, so the consumer cannot reconstruct every stored track. Keep the existing canonical percent encoding, or specify an equivalent reversible single-segment encoding in the new format.
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Agreed, fixed in 7a426e6: <track> keeps the existing canonical percent encoding from rs/moq-archive/src/path.rs, so a name with / stays one segment and nothing collides with .info. The consumer refuses a non-canonical segment, and the tests add names with / and a leading ..
(Written by Claude Opus 5.5)
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WalkthroughThe quest documents replace the timeline-indexed archive plan with prefix-based recording and broadcast serving. They specify SUBSCRIBE_ALL and Time(pts) range requirements, add opt-in HLS catalog metadata, and revise history, DVR, and paced-replay plans to use stored broadcasts. The changes also remove several earlier archive proposals and update related roadmap entries. Priority: ⬇️ Low Merge Risk: 🔵 Low · up to
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| Check name | Status | Explanation |
|---|---|---|
| Docstring Coverage |  |
No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0… |
| Linked Issues check | |
Check skipped because no linked issues were found for this pull request. |
| Out of Scope Changes check | |
Check skipped because no linked issues were found for this pull request. |
| Title check | |
The title clearly and concisely summarizes the main change: replanning archive work around SUBSCRIBE_ALL. |
| Description check | |
The description directly explains the archive replan, including SUBSCRIBE_ALL, producer and consumer changes, retargeted quests, and deleted quests. |
Full details: Docstring Coverage
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Explanation
No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0 files. (10 skipped: 10 unsupported.)
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Actionable comments posted: 3
- 🪄 Fix comments: Fix CodeRabbit comments on this PR
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Inline comments:
Review comments at @quest/m1/archive/consumer.md:
- Line 20: Update the archive refresh flow described in the consumer
documentation so a single prefix-wide StartAfter cursor cannot skip objects
belonging to lexically earlier tracks. Use per-track offsets with a way to
discover new tracks, or rescan the prefix, and add a two-track test where a
newly added key sorts before the previous cursor.
Review comments at @quest/m1/archive/producer.md:
- Around line 51-52: Update the Resume behavior in the producer documentation
and implementation to resume from the last stored frame position, or rewrite an
incomplete group, so stopping between object parts cannot skip remaining frames;
add coverage for restarting between an oversized timed group’s object parts.
Review comments at @quest/m1/subscribe-ranges/model.md:
- Around line 19-20: Clarify the time-range test steps in the model description
using parallel, explicit actions: test the start and end times against the
cache, pass unresolved times through a handler, and verify that an untimed track
refuses them.
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📒 Files selected for processing: 27
quest/m1/README.mdquest/m1/archive/README.mdquest/m1/archive/catalog-hls.mdquest/m1/archive/consumer.mdquest/m1/archive/flush.mdquest/m1/archive/history-floor.mdquest/m1/archive/hls-target.mdquest/m1/archive/producer.mdquest/m1/archive/replay-catalog.mdquest/m1/archive/subscribe-all.mdquest/m1/archive/subscribe-tracks.mdquest/m1/catalog-identity-rs.mdquest/m1/js-fetch.mdquest/m1/lite07-finalize.mdquest/m1/subscribe-ranges/README.mdquest/m1/subscribe-ranges/ietf.mdquest/m1/subscribe-ranges/js.mdquest/m1/subscribe-ranges/lite.mdquest/m1/subscribe-ranges/model.mdquest/m2/README.mdquest/m2/archive-dvr.mdquest/m2/archive-js-timelines.mdquest/m2/archive-recovery-listing.mdquest/m2/js-hls.mdquest/m3/README.mdquest/m3/archive-browser.mdquest/m3/archive-paced-replay.md
💤 Files with no reviewable changes: 6
- quest/m1/js-fetch.md
- quest/m2/archive-js-timelines.md
- quest/m2/archive-recovery-listing.md
- quest/m3/archive-browser.md
- quest/m1/archive/flush.md
- quest/m1/archive/replay-catalog.md
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Merge main (#5732 landed model ranges): delete model.md and move the Time(pts) anchor into Dynamic range requests. Review fixes: - consumer: refresh with a cursor per track plus a delimiter LIST for new tracks, instead of one prefix-wide StartAfter. - producer/consumer: drop the source max age from .info; served tracks advertise no Publisher Max Age limit. - producer: resume at the frame after the last stored one, per track. - producer: keep the canonical percent encoding so a track name is one key segment. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
# Conflicts: # quest/m1/lite07-finalize.md
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Actionable comments posted: 1
- 🪄 Fix comments: Fix CodeRabbit comments on this PR
🤖 Prompt to fix review comments
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Inline comments:
Review comments at @quest/m1/archive/consumer.md:
- Around line 47-48: Update the `track::Dynamic` handler’s `Time(pts)`
resolution: use the key listing to select an object, then inspect that object’s
group timestamps (or an equivalent per-group time index) to identify the group
containing the requested PTS and return the end immediately after that group.
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📒 Files selected for processing: 10
quest/m1/README.mdquest/m1/archive/README.mdquest/m1/archive/consumer.mdquest/m1/archive/producer.mdquest/m1/archive/subscribe-all.mdquest/m1/lite07-finalize.mdquest/m1/subscribe-ranges/README.mdquest/m1/subscribe-ranges/dynamic.mdquest/m1/subscribe-ranges/ietf.mdquest/m2/README.md
🚧 Files skipped from review as they are similar to previous changes: 3
- quest/m1/README.md
- quest/m2/README.md
- quest/m1/subscribe-ranges/README.md
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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Merge summary
(Written by Claude Opus 5.5) |
Replans the archive line around decisions the maintainer made on 2026-10-17. This PR changes quests only; no code, drafts, or docs.
Decisions (paper trail)
SUBSCRIBE_ALL (moq-lite-07-wip; the lite-07 cut waits on it)
IETF SUBSCRIBE_TRACKS maps 1:1 onto SUBSCRIBE_ALL, and PUBLISH onto the same hook, instead of answering NOT_SUPPORTED. That keeps one mechanism and supports IETF clients.
moq-archive becomes
archive::Producer/archive::Consumerwith no catalog dependency.<prefix>/<track>/<first group>-<first pts>.<first group>and are never split..infoholds the TRACK_INFO properties.flush()/cut().Serving the archive as a covering-prefix route under the original path is rejected.
A host serves the archive at a path of its choosing. Stitching it into the original path is deferred.
The catalog's root
archivesection is deleted from rs/hang, js/hang, the hang draft, moq-mux and moq-hls. The draft's Recording section goes too; the layout is documented in moq-archive rustdoc and a new Archives doc page.Timelines survive only as an opt-in per-rendition
hlsfield, for HLS compatibility.@moq/publishpublish it only when enabled.Subscribe ranges gain a
Time(pts)end.@moq/watchseeks with it.Paced replay paces timed tracks only. Untimed tracks stay readable by request and range.
Formats break in place, since nothing is in production.
Review round (2026-10-18), chosen as recommended by the iterating agent:
.infokeeps only timescale and priority. Rejected: the source's max age (expires archived history), a consumer-configured value (no caller needs it yet).track::Consumer✅. Rejected: after the last group (loses a split or open group's tail), re-recording the group from frame 0 (fails once the source dropped its head), a per-track start field in SUBSCRIBE_ALL.Quest changes
Time(pts)anchor, sincemodel.mdlanded in feat(net)!: carry group ranges on track::Subscription #5732quest checkpasses.(Written by Claude Opus 5.5)
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