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25 lines
1.3 KiB
MySQL
25 lines
1.3 KiB
MySQL
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-- Migration 043: decouple adapter class-identity (kind) from instance-identity (name)
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--
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-- Until now config.adapters.name served two roles:
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-- 1. Instance primary key — the unique name used in runtime state, logs, dedup
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-- tables, NATS subjects, etc.
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-- 2. Registry key — the key used to look up the adapter class in the
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-- supervisor's in-memory registry (discover_adapters returns {class.name: cls}).
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--
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-- These roles must be split so that one adapter class can later back many
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-- operator-created instances (e.g. a generic HTTP adapter). The new `kind`
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-- column holds the class identity (registry key), while `name` remains the
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-- unique instance identifier. All built-in adapters have name == kind, so
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-- every existing row is back-filled with kind = name and behaviour is unchanged.
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--
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-- Idempotent: ADD COLUMN IF NOT EXISTS is safe on re-run.
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-- No DEFAULT is set — future INSERT paths must always supply kind explicitly.
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ALTER TABLE config.adapters ADD COLUMN IF NOT EXISTS kind TEXT;
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-- Back-fill: existing rows get kind = name (class identity == instance identity
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-- for all 23 built-in adapters shipped before v0.15.0).
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UPDATE config.adapters SET kind = name WHERE kind IS NULL;
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-- Enforce non-null going forward.
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ALTER TABLE config.adapters ALTER COLUMN kind SET NOT NULL;
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