Transfer triage spike: CORA-owned TransferPort + Globus adapter (not for merge)#362
Draft
xmap wants to merge 5 commits into
Draft
Transfer triage spike: CORA-owned TransferPort + Globus adapter (not for merge)#362xmap wants to merge 5 commits into
xmap wants to merge 5 commits into
Conversation
…pike) Finalizes the data-transfer design triage with a CORA-shaped seam rather than a Globus transliteration. The verbs are begin/observe/cancel (a non-blocking observe-loop), the state set is Pending/Active/Suspended/ Succeeded/Failed/Cancelled, and a partial move is carried as files_failed>0 on a terminal Failed (no PartiallyFailed enum yet). The in-memory double plus a 2-BM/DMagic scenario show the deciding fact: a transfer is a long-running edge job (it waits through a non-terminal Suspended and folds a partial terminal), not a synchronous conductor step like ComputeStep. Not for merge: no production consumer yet and the build trigger has not fired. TransferPort takes the bare-verb port-suffix carve-out alongside ControlPort/ComputePort. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
…pike) The first real TransferPort substrate, validating the CORA-owned shape against an outside adapter rather than a fake alone. It takes an already-authorized globus_sdk TransferClient by injection (the OAuth2 dance stays a composition-root concern), builds a TransferData submission, and maps Globus task status into TransferState (INACTIVE -> Suspended, a FAILED task with subtasks_failed>0 -> the partial signal). Globus calls run in asyncio.to_thread since the client is synchronous. Error mapping: NetworkError -> EndpointUnreachable; GlobusAPIError dispatched on http_status -> AccessDenied / EndpointUnreachable / Rejected. Adds globus-sdk>=3,<4 (resolved 3.65) as a hard dep, following the aioca/p4p substrate-adapter convention. Unit-tested against a fake TransferClient; NOT run against a live Globus endpoint (needs credentials + two collections). Still a spike: no production consumer until the build trigger fires. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Coverage report
Click to see where and how coverage changed
This report was generated by python-coverage-comment-action |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
The acquisition-to-analysis stage-in substrate for stage-then-reconstruct, the sibling of GlobusTransferPort (which serves the outer user-delivery leg). It runs an APS Fast Data Transfer (fdt.jar) client as a subprocess via an injected TransferRunner and maps the exit code into a TransferState. Integrity and sync are deferred on purpose: checksum-on-arrival is recorded as an Attestation in the materialize-a-Distribution edge job that consumes this port, and general sync belongs to richer substrates (Globus). Progress is coarse (a subprocess exposes no per-file counters). Grounded in the real 2-BM pipeline (2bm-docs ops/item_018 + item_025): the per-scan tomdet:/local1 -> /data2 copy via fdt.jar or scp is exactly the leg reconstruction on the analysis nodes waits on. Unit-tested against a fake runner; not run against a real fdt.jar. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
…onstruct (triage spike) Sequences the materialize-a-Distribution flow: move bytes over a TransferPort, then on success register a new analysis-tier Distribution of the same raw Dataset (register_distribution) and record a checksum Attestation (record_attestation), whose Match flips the Distribution to Verified in the Data BC projection. That Verified-at-tier fact is exactly what leg C's start_run gate reads. It owns the sequence and the transfer gate (registers only on a Succeeded move, waits through a non-terminal Suspended); it trusts the caller's RegisterDistribution (byte-identical-copy fields built from the parent Dataset). Lives in cora.api, the only module that may reach both operation.ports and the Data BC handlers; injected collaborators, unit-tested against the in-memory TransferPort plus fake handlers. Not yet wired into the EdgeConductor or the app (deferred to the real build, post gate-review of leg C). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
… 1 (triage spike) The cross-BC seam the start_run input gate (leg C of stage-then-reconstruct) will read: given an input Dataset, return its non-Discarded Distributions with status, so the decider can gate on Verified AND distinguish Stale from absent. Mirrors SupplyLookup (one Data-BC adapter, multiple consumers; the port returns rows, the decider partitions on status); lives in cora.infrastructure.ports because Run may not import the Data-internal DistributionLookup (the Edition canonical-pick query, a different need). Ships the Protocol + result DTO + two test stubs; no consumer yet. The Method input-role declaration, the Run input-Dataset binding, and the start_run genesis Verified-gate (plus the Data BC Postgres adapter) are the following sub-slices; the gate sub-slice is where gate-review-before-merge bites. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
What this is
A design-triage spike, not a merge candidate. It answers the open question from the transfer-orchestration design: is a transfer a step the conductor walks, or a long-running edge job with its own lifecycle? It builds the CORA-owned
TransferPort, a test double, a 2-BM/DMagic scenario, and a realGlobusTransferPortadapter, then lets the shape settle the question.The build trigger has not fired and there is no production consumer yet, so this is intentionally parked on a branch.
Commits
feat(operation): CORA-owned TransferPort + in-memory double (triage spike)feat(operation): GlobusTransferPort adapter over globus-sdk (triage spike)CORA-owned, not Globus-shaped
The port is shaped from CORA's own needs and the substrate is tested against it, not copied from it:
begin/observe/cancel(a non-blocking observe-loop), not the corpussubmit/poll/cancel.TransferState= Pending / Active / Suspended / Succeeded / Failed / Cancelled; a partial move is carried asfiles_failed > 0on a terminalFailed(noPartiallyFailedenum, deferred until a substrate has a native one).idempotency_keyis on the request because CORA's replay-determinism needs it;actuation_kindis deliberately off the surface (a route-layer concern, as on the control path).GlobusTransferPortis a pure ACL: injectedTransferClient, status + error mapping,asyncio.to_threadaround the sync client. ATYPE_CHECKINGconformance line fails the type-check if the real client ever drifts from the seam.Triage conclusion
A transfer is a long-running edge job (begin-then-observe-loop, waits through a non-terminal
Suspendedon credential expiry, folds a partial terminal), driven by the existingEdgeConductorlike the Run FSM. It is not a synchronous conductor step likeComputeStep. The step union is untouched.Verification
ruff, ruff-format, pyright (strict), tach, the full architecture suite, and the operation unit module are all green; naming-r3 OK on both the port and the adapter. Each commit passed the pre-commit gate.
Caveat: the Globus adapter is unit-tested against a fake
TransferClient; it has not been run against a live Globus endpoint.Before any merge
🤖 Generated with Claude Code