dba8fc607145669a05c19c2aa03fca5262c00a4d
2 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
cproudlock
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b96637e1a1 |
Let a baseline meet a table that is already there
Reported: `flask plugin upgrade-all` failed the tools plugin with "table securesendsecrets already exists". Every post-cutover baseline emitted a plain op.create_table. That is correct only while a table's existence and its plugin's Alembic stamp can never disagree, and they can. Anything that builds tables from the models - db.create_all(), which `flask db-utils create-all` calls - creates them and stamps nothing. A run that creates a table and then fails before its stamp commits leaves the same split, and re-running is the obvious thing to try. In both cases upgrade-all meets existing tables with an unstamped chain and the create is fatal. Nothing caught it because the migration test DROPS the post-cutover tables db.create_all() built before running upgrade-all. That arranges the one state where an unguarded create works, and never the state the report came from. The new test is the same sequence with the drop removed for the plugin under test. create_table_if_missing and create_index_if_missing are in alembic_template.py next to create_plugin_tables, which had the idempotency rule right and turns out to be called by nobody - its docstring claimed every 0001 used it. Fixed the docstring rather than rewiring the baselines onto it, because the reason they hand-write their DDL still stands: the helper's per-plugin MetaData cannot resolve a foreign key to a core table at CreateTable-compile time. INDEXES ARE MATCHED ON COLUMNS, NOT NAME, and that distinction matters. The two creators disagree about names - db.create_all() takes SQLAlchemy's default convention (ix_securesendsecrets_token) and a baseline spells it the way this repo's naming rules require (ixsecuresendsecretstoken). A name-keyed guard would have called the index missing and added a second one over the same column, which MySQL permits with a warning, so every affected site would have quietly grown duplicates. The test asserts no table ends up with two indexes over the same columns. Applied to all nine table-creating plugin migrations, not just the tools baseline that was reported: the four later migrations that create tables have the same exposure, and geenforce, measuringtools, printedparts and backups are the same defect waiting for a different site. WHAT THIS DOES NOT FIX. It makes a baseline idempotent, not a whole chain. A longer chain can still meet an ALTER whose column is already present - printedparts adding gagelabtag to a table create_all built at head is the case that showed up while testing. Guarding every op one at a time is the wrong answer to that; a database built from the models is already AT head and its chains want stamping rather than replaying, and there is no `flask plugin stamp` today. Left alone deliberately rather than half-built, and the new test is scoped to single-baseline plugins so it does not pretend otherwise. |
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cproudlock
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fca775c737 |
backups plugin: per-asset config backups with revision history
Adds a kind-pluggable backups plugin. Configuration captured from a PC is filed against the MACHINE it controls, with a revision history and download back to the native format. NTLARS/DNC is the first kind. Settings live in the controlling PC's registry but describe the machine, so revisions attach to the machine's asset and carry no foreign key to the PC: history survives a PC being replaced or deleted, and sourcehostname records the handover. Storage splits by kind. Parseable kinds store a dialect-neutral JSON projection in ShopDB and re-render on download; opaque vendor formats (part marker and similar) keep their bytes on the SFLD share with ShopDB holding metadata and the UNC pointer. Two .reg dialects exist in the wild: NTLARS's own Save... export omits the WOW6432Node path segment, scripted exports include it. Parsing strips whichever root matched, so a stored revision commits to neither and download offers both (NTLARS Load... by default, WOW6432Node for direct reg import). Getting this backwards is silent, so the dedup hash deliberately excludes sourcedialect and both dialects of one config dedup to a single revision. Dedup is load-bearing: the collector runs every GE-Enforce cycle across the fleet, so a revision is inserted only when the content hash differs from that asset's latest for that kind. A freshly imaged PC opens NTLARS with a blank General tab. Recording that would make an empty config the newest revision exactly when someone needs the last good one, so a blank MachineNo is rejected rather than accepted as a change. Two of the 320 known-good backups on the share already have that shape. DNC Info card summarises the latest revision on the machine page: General (Cnc, NcIF, HostType), eFocas, Serial, NTSHR when populated (only 18 of 147 machines), and MARK when the machine is a marker. MARK is gated on Cnc=MARKER or the ShopDB machine type, not on the MARK key having content: MARK carries serial defaults on 145 of 147 machines and DncPatterns reads YES on 103 including ordinary lathes, so neither identifies a marker. The info card is owned by the kind (BackupKind.infopanel/buildinfo) and served by a generic endpoint, so the expected successor to DNC ships its own card by adding a class rather than changing the plugin or the panel wiring. Also: schedule and retention settings with a prune that never drops the newest or the oldest revision, and scripts/import_ntlars_backups.py to seed history from the existing per-machine .reg files (144 of 147 resolve to assets). Codec verified against all 320 real backups: round-trips clean through both dialects. Bay-side generation verified on Windows against reg.exe export. |