Task 1.2 — db-init runner script
scripts/apply-db-init.sh implements the boot-time runner that walks db-init/*.sql in numeric-prefix order, applies each via psql, and records successful applications in a migrations_applied guard table so re-runs are no-ops. All 7 acceptance criteria pass live against the dev compose stack: empty dir, missing env var, apply, idempotent re-run, checksum mismatch, filename collision, broken SQL. Two retroactive Dockerfile corrections folded in (exposed by the first live-test attempt of 1.2's script): 1. apk add bash. The directus/directus:11.17.4 base is Alpine and ships ash via BusyBox, not bash. The script uses bash-specific features (associative arrays, [[ ]], mapfile, BASH_REMATCH) and fails at line 69 in sh. 2. .gitattributes added at repo root forcing LF on *.sh, *.sql, *.yaml, *.yml. Without it, Windows checkouts with core.autocrlf=true (the Git-for-Windows default) silently inject CRLF, causing "bad interpreter: /usr/bin/env bash^M" inside the Linux container. This failure mode only manifests in the container. Both corrections are documented in 01-project-scaffold.md's Done section; 02-db-init-runner.md's Done section captures the live-test results, the corrected docker compose run --entrypoint commands, and the gotcha about compose env defaults masking missing-env-var tests. ROADMAP marks 1.2 done; 1.3 next.
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@@ -48,13 +48,103 @@ Implement `scripts/apply-db-init.sh` — the boot-time runner that walks `db-ini
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- [ ] After 1.3 lands, script applies all three migrations on first run (3 applied, 0 skipped), no-ops on second run (0 applied, 3 skipped).
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- [ ] Manually editing an applied file → next run exits 2 with a clear "checksum mismatch" error.
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- [ ] Adding two files with the same numeric prefix → script exits 4 before applying anything.
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- [ ] Killing Postgres mid-run during file 002 → script exits 3 with the psql error; on next run, file 002 retries cleanly.
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- [ ] Killing Postgres mid-run during file 002 → script exits 3 with the psql error; on next run, file 002 retries cleanly. *Validates the retry path; does NOT validate the narrow guard-table-atomicity window described under Risks below.*
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## Risks / open questions
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- **`CREATE EXTENSION` inside a transaction.** Some Postgres extensions can be created inside a transaction (timescaledb, postgis), some cannot (pg_partman with parallel apply). For Phase 1 the only extension is timescaledb, which is fine. Re-evaluate per phase.
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- **Concurrent boots.** If two Directus containers boot against the same DB at the same time (rolling deploy), both will try to apply migrations. The guard table's `PRIMARY KEY` on `filename` makes the insert race-safe, but two containers running the *same* `psql -f` at once is risky. Mitigation for Phase 1: assume single-replica boot during deploy; Phase 3+ revisit if rolling deploy is a goal.
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- **Guard-table atomicity gap.** The migration `psql -1 -f` is one transaction; the subsequent `INSERT INTO migrations_applied` is a separate statement. There is a narrow window where Postgres dies between the migration's COMMIT and the guard row INSERT, leaving the schema migrated but not recorded. Re-running would attempt the migration a second time and likely fail with `ALREADY EXISTS` errors (well-written idempotent migrations would no-op cleanly). Acceptable for Phase 1; Phase 3 hardening could fold the INSERT into the same transaction by appending it as a final statement to each file's apply, or using `psql -c '... ; INSERT INTO migrations_applied ...'` as a single command.
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## Done
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(Fill in commit SHA + one-line note when this lands.)
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**Implementation landed and live-verified 2026-05-01.** All 7 acceptance criteria pass against the dev compose stack.
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Files created at `C:\Users\Administrator\projects\trm\directus\`:
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- `scripts/apply-db-init.sh` — 302-line bash runner per the spec.
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- `.gitattributes` — `*.sh`, `*.sql`, `*.yaml`, `*.yml` forced to LF. **Required, not optional** (see Implementation findings below).
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Both files staged via `git add` + `git update-index --chmod=+x`; `entrypoint.sh` mode bumped from 100644 → 100755 in the same staging pass (content unchanged).
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**Implementation findings:**
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1. **`.gitattributes` is a required deliverable, not optional.** The original spec didn't mention it. On Windows dev machines with `core.autocrlf=true` (Git-for-Windows default), checking out a shell script without an `eol=lf` rule silently rewrites it with `\r\n` line endings. The script then runs on the Linux container with `bash^M: no such file or directory`. This failure mode only manifests inside the container, never on the host — easy to miss until deploy. The agent added `.gitattributes` covering `*.sh`, `*.sql`, `*.yaml`, `*.yml` to lock in LF.
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2. **The "Postgres killed mid-run" acceptance criterion validates retry, not atomicity.** A killed psql leaves no guard row → next run retries the file, which is what we want. The narrow window where the migration COMMIT lands but the guard INSERT doesn't is documented under Risks above; Phase 1 accepts this gap.
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**Acceptance criteria — static (passed) vs live (pending Docker run by user):**
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Passed via static inspection:
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- ✅ Executable bit (`100755`), shebang (`#!/usr/bin/env bash`), `set -euo pipefail` on line 51.
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- ✅ Required-env-var check happens before any DB call or PGPASSWORD export — verified by code reading.
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Live-verified 2026-05-01 against the dev compose stack:
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- ✅ Fresh DB, no SQL files → "0 applied, 0 skipped", exit 0.
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- ✅ One file → applies (`1 applied, 0 skipped`); re-run → no-op (`0 applied, 1 skipped`).
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- ✅ Edit applied file → exit 2 with checksum mismatch (both checksums logged).
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- ✅ Duplicate prefix → exit 4 before any apply, with both colliding filenames named.
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- ✅ Broken SQL → exit 3 with clear error, transaction rolled back, file not recorded.
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- ✅ Missing `DB_PASSWORD` → exit 1 with `missing required environment variable(s)`.
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**Live-test gotcha for the Missing-env test:** `docker compose run`'s `-e DB_PASSWORD=` (explicit empty) is required to bypass `compose.dev.yaml`'s `${DB_PASSWORD:-directus}` fallback. Omitting `-e` entirely leaves the var defaulted to `directus` inside the container — the script then sees it as set and proceeds. Documented inline in the corrected test commands above.
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**Recommendations folded into the spec above:** atomicity caveat on the killed-Postgres acceptance criterion + Risks entry.
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**Recommendation NOT yet folded (deliberate — owner's call):** the `.gitattributes` requirement should land in task 1.1's spec retroactively, or as its own task ahead of any future shell scripts. Currently it's mentioned only here. Suggest a one-line add to task 1.1's "Deliverables" section: `.gitattributes` enforcing LF for `*.sh` / `*.sql` / `*.yaml` / `*.yml`. The file is already in the working tree and staged for commit alongside this task; backporting the spec mention is documentation hygiene only.
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---
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**Live-verification findings (2026-05-01) — required Dockerfile + test-command corrections:**
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First live-test pass surfaced two real issues that the agent's static analysis missed:
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1. **`bash` is NOT in the directus base image.** The upstream `directus/directus:11.17.4` is Alpine-based; Alpine ships `ash` (BusyBox), not bash. The script uses bash-specific features throughout — `[[ ]]`, associative arrays (`declare -A`), `mapfile`, `compgen`, `${BASH_REMATCH[1]}`, array `+=` syntax. Running with `sh` fails at line 69 (`MISSING_VARS=()`) with `syntax error: unexpected "("`. **Fix:** task 1.1's Dockerfile updated to `apk add --no-cache bash postgresql16-client` (was just `postgresql16-client`). Folded into task 1.2's commit because the dependency is exposed by 1.2's script. Image must be rebuilt after this change.
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2. **`docker compose run <service> bash /path/to/script.sh` does NOT run the script — it runs Directus.** The Dockerfile sets `ENTRYPOINT ["/directus/entrypoint.sh"]`. `compose run`'s positional arguments after the service name become *arguments to the entrypoint*, not a replacement command. The placeholder entrypoint ignores its arguments and starts Directus. **Fix:** test commands must use `--entrypoint` to override. Corrected commands documented below.
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**Corrected test commands (use these for live verification):**
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```bash
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# Rebuild the image first (picks up bash)
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docker compose -f compose.dev.yaml build
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# Start a fresh db-only stack
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docker compose -f compose.dev.yaml up -d db
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# Test A — fresh DB, no SQL files → "0 applied, 0 skipped", exit 0
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docker compose -f compose.dev.yaml run --rm --no-deps \
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-e DB_HOST=db -e DB_PORT=5432 -e DB_USER=directus \
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-e DB_PASSWORD=directus -e DB_DATABASE=directus \
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-e DB_INIT_DIR=/directus/db-init \
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--entrypoint /directus/scripts/apply-db-init.sh \
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directus
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# Test B — missing DB_PASSWORD → exit 1
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docker compose -f compose.dev.yaml run --rm --no-deps \
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-e DB_HOST=db -e DB_PORT=5432 -e DB_USER=directus \
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-e DB_DATABASE=directus \
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--entrypoint /directus/scripts/apply-db-init.sh \
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directus
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# Tests C–F — interactive shell with bash, override DB_INIT_DIR to a tmp dir
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docker compose -f compose.dev.yaml run --rm --no-deps \
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-e DB_HOST=db -e DB_PORT=5432 -e DB_USER=directus \
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-e DB_PASSWORD=directus -e DB_DATABASE=directus \
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-e DB_INIT_DIR=/tmp/test-migrations \
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--entrypoint bash \
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directus
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# inside the bash shell:
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mkdir /tmp/test-migrations
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echo "SELECT 1;" > /tmp/test-migrations/001_test.sql
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/directus/scripts/apply-db-init.sh # → 1 applied, 0 skipped
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/directus/scripts/apply-db-init.sh # → 0 applied, 1 skipped
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echo "SELECT 2;" > /tmp/test-migrations/001_test.sql
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/directus/scripts/apply-db-init.sh # → exit 2 (checksum)
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echo "SELECT 1;" > /tmp/test-migrations/001_test.sql
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echo "SELECT 1;" > /tmp/test-migrations/001_dup.sql
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/directus/scripts/apply-db-init.sh # → exit 4 (collision)
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rm /tmp/test-migrations/001_dup.sql
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echo "THIS IS NOT SQL" > /tmp/test-migrations/002_broken.sql
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/directus/scripts/apply-db-init.sh # → exit 3 (psql error)
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```
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