ci: Automate patch releases and pre-releases

This work by automatically pushing a new tag on main and release
branches after each commit. The tag will be "devel" on main and the
version from postgrest.cabal for release branches. The release
workflow then runs as a tag pipeline, making the actual release.

For release branches, the tag will only be created if a tag for this
version doesn't exist, yet. This means to actually make a new patch
release, we still need to bump the version in postgrest.cabal. We
can automate this later as part of our backport-bot.

Resolves #2006
Resolves #2997

.github/actions/artifact-from-cirrus/action.yaml

@@ -101,8 +101,15 @@ runs:
         }
         archive="$(mktemp)"
         artifacts="$(mktemp -d)"
-        curl --no-progress-meter --fail -o "${archive}" \
-          "https://api.cirrus-ci.com/v1/artifact/task/$(get_external_id)/${{ inputs.download }}.zip"
+        until curl --no-progress-meter --fail -o "${archive}" \
+                "https://api.cirrus-ci.com/v1/artifact/task/$(get_external_id)/${{ inputs.download }}.zip"
+        do
+          # This happens when a tag is pushed on the same commit. In this case the
+          # job is immediately marked as "completed" for us, so we end up here after a few
+          # seconds - but the actual Cirrus CI task is still running and didn't produce its artifact, yet.
+          echo "Artifact not found on Cirrus CI, yet. Waiting..."
+          sleep 30
+        done
         unzip "${archive}" -d "${artifacts}"
         echo "artifacts=${artifacts}" >> "$GITHUB_OUTPUT"
     - name: Save artifact to GitHub Actions

.github/scripts/arm/docker-publish.sh

@@ -15,7 +15,6 @@ DOCKER_USER="$3"
 DOCKER_PASS="$4"
 SCRIPT_DIR="$5"
 PGRST_VERSION="v$6"
-IS_PRERELEASE="$7"
 
 DOCKER_BUILD_DIR="$SCRIPT_DIR/docker-env"
 
@@ -45,6 +44,6 @@ sudo docker buildx build --build-arg PGRST_GITHUB_COMMIT=$PGRST_GITHUB_COMMIT \
 # NOTE: This assumes that there already is a `postgrest:<version>` image
 #       for the amd64 architecture pushed to Docker Hub
 sudo docker buildx imagetools create --append -t $DOCKER_REPO/postgrest:$PGRST_VERSION $DOCKER_REPO/postgrest:$PGRST_VERSION-arm
-[ -z $IS_PRERELEASE ] && sudo docker buildx imagetools create --append -t $DOCKER_REPO/postgrest:latest $DOCKER_REPO/postgrest:$PGRST_VERSION-arm
+[ "$PGRST_VERSION" != "devel" ] && sudo docker buildx imagetools create --append -t $DOCKER_REPO/postgrest:latest $DOCKER_REPO/postgrest:$PGRST_VERSION-arm
 
 sudo docker logout

.github/workflows/ci.yaml

@@ -6,6 +6,7 @@ on:
       - main
       - v[0-9]+
     tags:
+      - devel
       - v*
 
 concurrency:
@@ -100,48 +101,68 @@ jobs:
           if-no-files-found: error
 
 
-  prepare:
-    name: Release / Prepare
+  tag:
+    name: Release / Tag
     if: |
-      startsWith(github.ref, 'refs/tags/v') &&
-      (success() || needs.arm.result == 'skipped')
+      startsWith(github.ref, 'refs/heads/') &&
+      needs.docs.result == 'success' &&
+      needs.test.result == 'success' &&
+      needs.build.result == 'success' &&
+      (needs.arm.result == 'skipped' || success())
+    permissions:
+      contents: write
     runs-on: ubuntu-22.04
     needs:
       - docs
       - test
       - build
       - arm
-    outputs:
-      version: ${{ steps.Identify-Version.outputs.version }}
-      isprerelease: ${{ steps.Identify-Version.outputs.isprerelease }}
     steps:
       - uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b # v4.1.4
-      - id: Identify-Version
-        name: Identify the version to be released
+        with:
+          ssh-key: ${{ secrets.POSTGREST_SSH_KEY }}
+      - name: Tag latest commit
         run: |
-          tag_version="${GITHUB_REF##*/}"
           cabal_version="$(grep -oP '^version:\s*\K.*' postgrest.cabal)"
 
-          if [ "$tag_version" != "v$cabal_version" ]; then
-            echo "Tagged version ($tag_version) does not match the one in postgrest.cabal (v$cabal_version). Aborting release..."
-            exit 1
+          if [[ "$cabal_version" == *.*.* ]]; then
+            if [ -z "$(git tag --list "v$cabal_version")" ]; then
+              git tag "v$cabal_version"
+              git push origin "v$cabal_version"
+            fi
           else
-            echo "Version to be released is $cabal_version"
-            echo "version=$cabal_version" >> "$GITHUB_OUTPUT"
+            git tag -f "devel"
+            git push -f origin "devel"
           fi
 
-          if [[ "$cabal_version" != *.*.*.* ]]; then
-            echo "Version is for a full release (version does not have four components)"
-          else
-            echo "Version is for a pre-release (version has four components, e.g., 1.1.1.1)"
-            echo "isprerelease=1" >> "$GITHUB_OUTPUT"
+
+  prepare:
+    name: Release / Prepare
+    if: |
+      startsWith(github.ref, 'refs/tags/') &&
+      needs.docs.result == 'success' &&
+      needs.test.result == 'success' &&
+      needs.build.result == 'success' &&
+      (needs.arm.result == 'skipped' || success())
+    runs-on: ubuntu-22.04
+    needs:
+      - docs
+      - test
+      - build
+      - arm
+    steps:
+      - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
+      - name: Check the version to be released
+        run: |
+          cabal_version="$(grep -oP '^version:\s*\K.*' postgrest.cabal)"
+
+          if [ "${GITHUB_REF_NAME}" != "devel" ] && [ "${GITHUB_REF_NAME}" != "v$cabal_version" ]; then
+            echo "Tagged version ($GITHUB_REF_NAME) does not match the one in postgrest.cabal (v$cabal_version). Aborting release..."
+            exit 1
           fi
       - name: Identify changes from CHANGELOG.md
         run: |
-          version="${{ steps.Identify-Version.outputs.version }}"
-          isprerelease="${{ steps.Identify-Version.outputs.isprerelease }}"
-
-          if [ -n "$isprerelease" ]; then
+          if [ "${GITHUB_REF_NAME}" == "devel" ]; then
             echo "Getting unreleased changes..."
             sed -n "1,/## Unreleased/d;/## \[/q;p" CHANGELOG.md > CHANGES.md
           else
@@ -164,9 +185,9 @@ jobs:
     permissions:
       contents: write
     runs-on: ubuntu-22.04
-    needs: prepare
-    env:
-      VERSION: ${{ needs.prepare.outputs.version }}
+    needs:
+      - prepare
+    if: success() || needs.prepare.result == 'success'
     steps:
       - uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b # v4.1.4
       - name: Download all artifacts
@@ -179,19 +200,19 @@ jobs:
 
           mkdir -p release-bundle
 
-          tar cJvf "release-bundle/postgrest-v$VERSION-linux-static-x64.tar.xz" \
+          tar cJvf "release-bundle/postgrest-${GITHUB_REF_NAME}-linux-static-x64.tar.xz" \
             -C artifacts/postgrest-linux-static-x64 postgrest
 
-          tar cJvf "release-bundle/postgrest-v$VERSION-macos-x64.tar.xz" \
+          tar cJvf "release-bundle/postgrest-${GITHUB_REF_NAME}-macos-x64.tar.xz" \
             -C artifacts/postgrest-macos-x64 postgrest
 
-          tar cJvf "release-bundle/postgrest-v$VERSION-freebsd-x64.tar.xz" \
+          tar cJvf "release-bundle/postgrest-${GITHUB_REF_NAME}-freebsd-x64.tar.xz" \
             -C artifacts/postgrest-freebsd-x64 postgrest
 
-          tar cJvf "release-bundle/postgrest-v$VERSION-ubuntu-aarch64.tar.xz" \
+          tar cJvf "release-bundle/postgrest-${GITHUB_REF_NAME}-ubuntu-aarch64.tar.xz" \
             -C artifacts/postgrest-ubuntu-aarch64 postgrest
 
-          zip "release-bundle/postgrest-v$VERSION-windows-x64.zip" \
+          zip "release-bundle/postgrest-${GITHUB_REF_NAME}-windows-x64.zip" \
             artifacts/postgrest-windows-x64/postgrest.exe
 
       - name: Save release bundle
@@ -205,11 +226,14 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: |
-          isprerelease="${{ needs.prepare.outputs.isprerelease }}"
-          echo "Releasing version v$VERSION on GitHub (isprerelease=$isprerelease)..."
+          echo "Releasing version ${GITHUB_REF_NAME} on GitHub..."
+
+          if [ "${GITHUB_REF_NAME}" == "devel" ]; then
+            isprerelease=1
+          fi
 
-          gh release delete "v$VERSION" || true
-          gh release create "v$VERSION" \
+          gh release delete "${GITHUB_REF_NAME}" || true
+          gh release create "${GITHUB_REF_NAME}" \
             -F artifacts/release-changes/CHANGES.md \
             ${isprerelease:+"--prerelease"} \
             release-bundle/*
@@ -220,13 +244,13 @@ jobs:
     runs-on: ubuntu-22.04
     needs:
       - prepare
+    if: |
+      vars.DOCKER_USER &&
+      (success() || needs.prepare.result == 'success')
     env:
-      GITHUB_COMMIT: ${{ github.sha }}
       DOCKER_REPO: postgrest
       DOCKER_USER: stevechavez
       DOCKER_PASS: ${{ secrets.DOCKER_PASS }}
-      VERSION: ${{ needs.prepare.outputs.version }}
-      ISPRERELEASE: ${{ needs.prepare.outputs.isprerelease }}
     steps:
       - uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b # v4.1.4
       - name: Setup Nix Environment
@@ -243,16 +267,16 @@ jobs:
           docker login -u "$DOCKER_USER" -p "$DOCKER_PASS"
           docker load -i postgrest-docker.tar.gz
 
-          docker tag postgrest:latest "$DOCKER_REPO/postgrest:v$VERSION"
-          docker push "$DOCKER_REPO/postgrest:v$VERSION"
+          docker tag postgrest:latest "$DOCKER_REPO/postgrest:${GITHUB_REF_NAME}"
+          docker push "$DOCKER_REPO/postgrest:${GITHUB_REF_NAME}"
 
           # Only tag 'latest' for full releases
-          if [[ -z "$ISPRERELEASE" ]]; then
-            echo "Pushing to 'latest' tag for full release of v$VERSION ..."
+          if [ "${GITHUB_REF_NAME}" != "devel" ]; then
+            echo "Pushing to 'latest' tag for full release of ${GITHUB_REF_NAME} ..."
             docker tag postgrest:latest "$DOCKER_REPO"/postgrest:latest
             docker push "$DOCKER_REPO"/postgrest:latest
           else
-            echo "Skipping pushing to 'latest' tag for v$VERSION pre-release..."
+            echo "Skipping push to 'latest' tag for pre-release..."
           fi
 # TODO: Enable dockerhub description update again, once a solution for the permission problem is found:
 # https://github.com/docker/hub-feedback/issues/1927
@@ -273,15 +297,12 @@ jobs:
     runs-on: ubuntu-22.04
     needs:
       - arm
-      - prepare
       - docker
     env:
       GITHUB_COMMIT: ${{ github.sha }}
       DOCKER_REPO: postgrest
       DOCKER_USER: stevechavez
       DOCKER_PASS: ${{ secrets.DOCKER_PASS }}
-      VERSION: ${{ needs.prepare.outputs.version }}
-      ISPRERELEASE: ${{ needs.prepare.outputs.isprerelease }}
     steps:
       - uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b # v4.1.4
       - name: Publish images for ARM builds on Docker Hub
@@ -294,8 +315,8 @@ jobs:
           key: ${{ secrets.SSH_ARM_PRIVATE_KEY }}
           fingerprint: ${{ secrets.SSH_ARM_FINGERPRINT }}
           script_stop: true
-          envs: GITHUB_COMMIT,DOCKER_REPO,DOCKER_USER,DOCKER_PASS,REMOTE_DIR,VERSION,ISPRERELEASE
-          script: bash ~/$REMOTE_DIR/docker-publish.sh "$GITHUB_COMMIT" "$DOCKER_REPO" "$DOCKER_USER" "$DOCKER_PASS" "$REMOTE_DIR" "$VERSION" "$ISPRERELEASE"
+          envs: GITHUB_COMMIT,DOCKER_REPO,DOCKER_USER,DOCKER_PASS,REMOTE_DIR,GITHUB_REF_NAME
+          script: bash ~/$REMOTE_DIR/docker-publish.sh "$GITHUB_COMMIT" "$DOCKER_REPO" "$DOCKER_USER" "$DOCKER_PASS" "$REMOTE_DIR" "$GITHUB_REF_NAME"
 
 
   clean-arm: