From fcaf95e0ab4f1fbe39af444191b2e54821dc6289 Mon Sep 17 00:00:00 2001
From: "David E. Wheeler" <david@justatheory.com>
Date: Wed, 24 Apr 2024 15:34:36 -0400
Subject: [PATCH] Add post on pgrx-build-test

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+---
+title: Test and Release pgrx Extensions with pgxn-tools
+slug: pgxn-tools-pgrx
+date: 2024-04-24T19:34:19Z
+lastMod: 2024-04-24T19:34:19Z
+description: |
+  The v1.6.0 release of the pgxn-tools Docker image adds a new command to
+  efficiently build and test pgrx extensions on a wide variety of Postgres
+  versions.
+tags: [Postgres, PGXN, pgrx, pgxn-tools]
+type: post
+link: 
+---
+
+Yesterday I released v1.6.0 of the [pgxn/pgxn-tools Docker image] with a new
+command: [`pgrx-build-test`] works much like the existing [`pg-build-test`]
+utility for [PGXS] extensions, but for [pgrx] extensions. Here's an example
+[from pg-jsonschema-boon], a pgrx extension I've been working on:
+
+```yaml
+name: 🧪 Test
+on:
+  push:
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    container: pgxn/pgxn-tools
+    strategy:
+      matrix:
+        pg: [11, 12, 13, 14, 15, 16]
+    name: 🐘 Postgres ${{ matrix.pg }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Start PostgreSQL ${{ matrix.pg }}
+        run: pg-start ${{ matrix.pg }}
+      - name: Setup Rust Cache
+        uses: Swatinem/rust-cache@v2
+      - name: Test on PostgreSQL ${{ matrix.pg }}
+        run: pgrx-build-test
+```
+
+The format is the same as for `pg-build-test`, starting with installing a
+specific version of Postgres from the [Postgres Apt repository] (supporting
+versions 8.2 – 17). It then adds the [Swatinem/rust-cache] action to speed up
+Rust builds by caching dependencies, and then simply calls `pgrx-build-test`
+instead of `pg-build-test`. Here's what it does:
+
+*   Extracts the pgrx version from the `Cargo.toml` file and installs it
+    (requires v0.11.4 or higher)
+*   Initializes pgrx to use the Postgres installed by `pg-start`
+*   Builds the extension with `cargo pgrx package`
+*   Tests the extension with `cargo pgrx test`
+*   Installs the extension with `cargo pgrx install`
+*   Checks for a `Makefile` with `installcheck` configured and, if it exists,
+    runs `make installcheck`
+
+This last step allows one to include [PGXS]-style `pg_regress` tests in
+addition to Rust/pgrx tests, as pg-jsonschema-boon does. Here's a [successful
+run].
+
+Special thanks to Eric Ridge and @Jubilee for all the help and improvements in
+[pgrx v0.11.4] that enable this to work transparently.
+
+## pgrx Release Pattern
+
+The pattern for releasing a prgx extension on PGXN is the same as before,
+although you may want to generate the `META.json` file from a template. For
+example, the [pg-jsonschema-boon Makefile] creates `META.json` from
+`META.json.in` by reading the version from `Cargo.toml` and replacing
+`@CARGO_VERSION@`, like so:
+
+``` makefile
+DISTVERSION = $(shell perl -nE '/^version\s*=\s*"([^"]+)/ && do { say $$1; exit }' Cargo.toml)
+
+META.json: META.json.in Cargo.toml
+	@sed "s/@CARGO_VERSION@/$(DISTVERSION)/g" $< > $@
+```
+
+The release workflow uses it like so:
+
+``` yaml
+name: 🚀 Release on PGXN
+on:
+  push:
+    # Release on semantic version tag.
+    tags: ['v[0-9]+.[0-9]+.[0-9]+']
+jobs:
+  release:
+    name: 🚀 Release on PGXN
+    runs-on: ubuntu-latest
+    container: pgxn/pgxn-tools
+    env:
+      PGXN_USERNAME: ${{ secrets.PGXN_USERNAME }}
+      PGXN_PASSWORD: ${{ secrets.PGXN_PASSWORD }}
+    steps:
+    - name: Check out the repo
+      uses: actions/checkout@v4
+    - name: Bundle the Release
+      env: { GIT_BUNDLE_OPTS: --add-file META.json }
+      run: make META.json && pgxn-bundle
+    - name: Release on PGXN
+      run: pgxn-release
+```
+
+Note the "Bundle the Release" step, which first calls `make META.json` to
+generate the dated file, and tells `pgxn-bundle` to add the `META.json`
+via the `GIT_BUNDLE_OPTS` environment variable. The project also excludes
+the `META.json.in` file from the bundle in [its `.gitattributes`] file,
+and excludes `META.json` from the project repository in [its `.gigignore`] file.
+
+Looking forward to seeing all your pgrx projects on [PGXN]!
+
+  [pgxn/pgxn-tools Docker image]: https://github.com/pgxn/docker-pgxn-tools/
+  [`pgrx-build-test`]: https://github.com/pgxn/docker-pgxn-tools?tab=readme-ov-file#pgrx-build-test
+  [`pg-build-test`]: https://github.com/pgxn/docker-pgxn-tools?tab=readme-ov-file#pg-build-test
+  [PGXS]: https://www.postgresql.org/docs/current/extend-pgxs.html
+  [pgrx]: https://github.com/pgcentralfoundation/pgrx
+  [from pg-jsonschema-boon]: https://github.com/tembo-io/pg-jsonschema-boon/blob/ea64888/.github/workflows/lint-and-test.yml
+  [Postgres Apt repository]: https://wiki.postgresql.org/wiki/Apt
+  [Swatinem/rust-cache]: https://github.com/Swatinem/rust-cache
+  [successful run]: https://github.com/tembo-io/pg-jsonschema-boon/actions/runs/8809394356
+  [pgrx v0.11.4]: https://github.com/pgcentralfoundation/pgrx/releases/tag/v0.11.4
+  [pg-jsonschema-boon Makefile]: https://github.com/tembo-io/pg-jsonschema-boon/blob/ea64888/Makefile
+  [its `.gitattributes`]: https://github.com/tembo-io/pg-jsonschema-boon/blob/ea64888/.gitattributes
+  [its `.gigignore`]: https://github.com/tembo-io/pg-jsonschema-boon/blob/ea64888/.gitignore
+  [PGXN]: https://pgxn.org/