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| 1 | +name: Check Prisma Migrations |
| 2 | +description: >- |
| 3 | + Verify Prisma migrations apply cleanly in order and reproduce schema.prisma |
| 4 | + (drift check), and that no new migration predates the latest on the base |
| 5 | + branch (ordering check). Designed to be embedded in an existing job so its |
| 6 | + failure turns that job's status red. |
| 7 | +
|
| 8 | +inputs: |
| 9 | + base-ref: |
| 10 | + description: >- |
| 11 | + Base git ref to diff migrations against (e.g. a PR's base branch). When |
| 12 | + set, the action skips work on PRs that don't touch migrations and runs the |
| 13 | + ordering check. When empty (release builds), the drift check always runs |
| 14 | + and the ordering check is skipped. |
| 15 | + required: false |
| 16 | + default: "" |
| 17 | + |
| 18 | +runs: |
| 19 | + using: composite |
| 20 | + steps: |
| 21 | + - name: Detect Prisma changes |
| 22 | + id: detect |
| 23 | + shell: bash |
| 24 | + run: | |
| 25 | + if [ -z "${{ inputs.base-ref }}" ]; then |
| 26 | + echo "changed=true" >> "$GITHUB_OUTPUT" |
| 27 | + echo "No base-ref provided — running drift check unconditionally." |
| 28 | + exit 0 |
| 29 | + fi |
| 30 | + git fetch --no-tags --depth=1 origin "+refs/heads/${{ inputs.base-ref }}:refs/remotes/origin/${{ inputs.base-ref }}" |
| 31 | + if git diff --name-only "origin/${{ inputs.base-ref }}" HEAD | grep -q '^packages/db/prisma/'; then |
| 32 | + echo "changed=true" >> "$GITHUB_OUTPUT" |
| 33 | + echo "Prisma changes detected — running migration checks." |
| 34 | + else |
| 35 | + echo "changed=false" >> "$GITHUB_OUTPUT" |
| 36 | + echo "No Prisma changes — skipping migration checks." |
| 37 | + fi |
| 38 | +
|
| 39 | + - name: Start Postgres |
| 40 | + if: steps.detect.outputs.changed == 'true' |
| 41 | + shell: bash |
| 42 | + run: | |
| 43 | + docker run -d --name prisma-check-pg \ |
| 44 | + -e POSTGRES_USER=postgres \ |
| 45 | + -e POSTGRES_PASSWORD=postgres \ |
| 46 | + -e POSTGRES_DB=sourcebot \ |
| 47 | + -p 5432:5432 postgres:16 |
| 48 | + for i in $(seq 1 30); do |
| 49 | + if docker exec prisma-check-pg pg_isready -U postgres -q; then |
| 50 | + echo "Postgres ready." |
| 51 | + exit 0 |
| 52 | + fi |
| 53 | + sleep 2 |
| 54 | + done |
| 55 | + echo "Postgres failed to become ready." && exit 1 |
| 56 | +
|
| 57 | + - name: Use Node.js |
| 58 | + if: steps.detect.outputs.changed == 'true' |
| 59 | + uses: actions/setup-node@v4 |
| 60 | + with: |
| 61 | + node-version: "20.x" |
| 62 | + |
| 63 | + - name: Install |
| 64 | + if: steps.detect.outputs.changed == 'true' |
| 65 | + shell: bash |
| 66 | + run: yarn install --frozen-lockfile |
| 67 | + |
| 68 | + # Check 1: migrations apply cleanly in order AND reproduce schema.prisma. |
| 69 | + # `migrate deploy` fails if a migration is broken or applies out of sequence; |
| 70 | + # `migrate diff` exits 2 when the applied history drifts from the schema. |
| 71 | + - name: Apply migrations |
| 72 | + if: steps.detect.outputs.changed == 'true' |
| 73 | + shell: bash |
| 74 | + working-directory: packages/db |
| 75 | + env: |
| 76 | + DATABASE_URL: postgresql://postgres:postgres@localhost:5432/sourcebot |
| 77 | + run: yarn prisma migrate deploy |
| 78 | + |
| 79 | + - name: Check for schema drift |
| 80 | + if: steps.detect.outputs.changed == 'true' |
| 81 | + shell: bash |
| 82 | + working-directory: packages/db |
| 83 | + env: |
| 84 | + DATABASE_URL: postgresql://postgres:postgres@localhost:5432/sourcebot |
| 85 | + run: | |
| 86 | + yarn prisma migrate diff \ |
| 87 | + --from-url "$DATABASE_URL" \ |
| 88 | + --to-schema-datamodel prisma/schema.prisma \ |
| 89 | + --exit-code \ |
| 90 | + && echo "✅ No drift: migrations reproduce schema.prisma" \ |
| 91 | + || (echo "❌ schema.prisma has changes not captured in a migration. Run: yarn dev:prisma:migrate:dev --name <name>" && exit 1) |
| 92 | +
|
| 93 | + # Check 2 (PRs only): no new migration predates the latest on the base branch. |
| 94 | + - name: Check migration ordering |
| 95 | + if: steps.detect.outputs.changed == 'true' && inputs.base-ref != '' |
| 96 | + shell: bash |
| 97 | + run: | |
| 98 | + MIG_DIR=packages/db/prisma/migrations |
| 99 | + BASE="origin/${{ inputs.base-ref }}" |
| 100 | + LATEST_ON_BASE=$(git ls-tree -r --name-only "$BASE" -- "$MIG_DIR" \ |
| 101 | + | sed -n "s#$MIG_DIR/\([0-9]\{14\}\)_.*#\1#p" | sort | tail -1) |
| 102 | + echo "Latest migration on ${{ inputs.base-ref }}: ${LATEST_ON_BASE:-<none>}" |
| 103 | + NEW=$(comm -23 \ |
| 104 | + <(ls "$MIG_DIR" | sed -n 's/^\([0-9]\{14\}\)_.*/\1/p' | sort -u) \ |
| 105 | + <(git ls-tree -r --name-only "$BASE" -- "$MIG_DIR" | sed -n "s#$MIG_DIR/\([0-9]\{14\}\)_.*#\1#p" | sort -u)) |
| 106 | + FAIL=0 |
| 107 | + for ts in $NEW; do |
| 108 | + if [ -n "$LATEST_ON_BASE" ] && [ "$ts" -lt "$LATEST_ON_BASE" ]; then |
| 109 | + echo "❌ New migration $ts predates latest migration on ${{ inputs.base-ref }} ($LATEST_ON_BASE). Rename it with a current timestamp." |
| 110 | + FAIL=1 |
| 111 | + fi |
| 112 | + done |
| 113 | + [ "$FAIL" -eq 0 ] && echo "✅ Migration ordering OK" |
| 114 | + exit $FAIL |
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