Elamur Groupantsmova-serve-store
The groupant beside tools/mova-serve/src/store.rs in the Mova repository: what the code computes, what it never does, how to go back from its outputs, its invariants, cost and checks.
Facts
Implementation material. A Mova code model describes this code at one source revision: partial models, finite checks and their stated scope. It is not a reviewed general exposition, and its labels are shown as written, never raised.
Components
| component | label | where |
|---|---|---|
| Approximant | partial | Approximant |
| Ast | partial | syntax.json |
| Cost | symbolic source derived | Cost |
| Descriptant | present | Descriptant |
| Invariant | partial | Invariant |
| Tests | executed bounded checks | Tests |
Obernants
The typed relations around the forward model: the behaviour complement (what the code never does), the reverse reconstruction (every input compatible with an output) and specialised views.
| relation | type | label | where |
|---|---|---|---|
| Behavior complement | behavior complement | partial source derived model | Behavior complement |
| Reverse reconstruction | reverse reconstruction | partial source derived model | Reverse reconstruction |
| Model presence | model presence | partial source derived model | Model presence |
Model text
Descriptant
What the service keeps on disk: the request log (JSONL, daily and size rotation into zstd archives, bounded total, 90 days), the ring of the last N results, the short links of long texts (bounded, 90 days), the warm list.
Approximant
append(e): rotate if the day changed or the file passed day_bytes → write line; Recent.put writes slot k mod N;
Links.put(q) = id(q).
Invariant
Atomic writes (temporary file and rename); archives ≤ total_bytes and ≥ today − 90 days; the ring never holds more than N files; a link id is a function of the text and language.
Cost
One append a request; one compression a rotation (zstd level 9).
Behavior complement
No IP addresses or user agents in the log; no full history of results.
Reverse reconstruction
An archive decompresses to the exact JSON lines; a link id recovers its text and language while kept.
Model presence
Without a state directory nothing is written.
Tests
store::tests: rotation by day and size with valid zstd archives and the size bound over 40 days; the ring keeps the
last three of seven; links are stable, deduplicated and bounded, and refuse a path-like id.
Provenance
This page in Markdown → https://md.groupants.elamur.ai/free/en/mova/tools/mova-serve/src/store.rs.groupant/