Module export 

Bulk export jobs against the vault: submit, poll, download.

The vault serves candles over REST (historical), but the raw tick tape is reachable only here — there is no streaming or REST path to it. Exports are asynchronous: submit a job, poll it to ready, then download the artifact.

⚠️ This is a different API surface from the candles endpoint

Measured differences that a client written against the candles path gets wrong:

• Submit answers 202 Accepted, not 200. A == 200 check never polls.
• The job-id field is renamed between responses: the submit body says job_id, the status body says id. Hence LseExportJob and LseExportJobStatus are separate types.
• Allowance exhaustion is a 429 with no Retry-After, mapped here to LseError::QuotaExceeded rather than LseError::RateLimited — an exhausted export allowance is a different condition from a per-minute rate limit, and only the former carries a QuotaStatus.

⚠️ A rejected submit still costs you an export

The allowance is 5 exports per hour, and the counter increments on attempt: a 400 for a misspelled dataset consumes 20% of the hour’s budget just as a successful job does. (Requests rejected at the CDN edge do not count.) This is why LseExportRequest::new validates everything it can before a request is ever sent — pre-flight validation here is an economic requirement, not defensive style.

⚠️ symbol: "all" does not mean “every symbol”, and every artifact is single-symbol

It is a literal that matches nothing. Measured as a controlled pair on one dataset, timeframe and range: symbol: "all" returned 202 → ready → a valid Parquet file with the full schema and zero rows, while the same request naming a real symbol returned rows. There is no error and no warning, and it costs an export. The tick path behaves identically, and omitting symbol is a hard 400 — so no spelling produces a multi-symbol export, and an export naming "all" is rejected before it is sent; see LseExportRequest::new.

The consequence reaches the consumer: combining N instruments means N artifacts merged with merge_time_sorted, as on the candle replay path. A decoded artifact is a synchronous iterator of already-tagged events, so it needs adapting to that merge’s stream item first; read_export documents the adapter. (Not linked: the decoder is behind its own feature, so the link would be dead in a build without it.)

The rejection is case-sensitive on purpose: ALL is Allstate’s real ticker, so refusing it would forbid a correct export with no way around it. “Matches nothing” is a property of the (dataset, symbol) pair, not of the string.

Range semantics

start is inclusive and end is exclusive, matching the candles endpoint. Measured twice: a tick export over [2026-07-01, 2026-07-02) yielded only 2026-07-01, and a daily candle export ending 2026-07-20 produced no bar for the 20th. The range is date-granular, which LseExportRange makes explicit by taking NaiveDate rather than silently truncating a timestamp.

⚠️ Licensing

Exported data is not redistributable. An export produces a file on your disk that is trivially easy to commit or share by accident; it must not be. See the module documentation and https://londonstrategicedge.com/terms.

Structs

LseExport

A downloaded export artifact, with the provenance needed to decode it safely.

LseExportJob

The response to an export submission.

LseExportJobStatus

The state of an export job, as reported by the status endpoint.

LseExportRange

The date range an export covers.

LseExportRequest

A validated export request.

Enums

LseExportStatus

Lifecycle state of an export job.

LseExportTimeframe

What an export job covers, in the provider’s own timeframe vocabulary.