slice CI pipeline to different steps

.github/workflows/testing.yml

@@ -3,43 +3,16 @@ name: regression check
 on: [push]
 
 jobs:
-  regression-check:
-    name: run regression test suite
+  pgbuild:
+    name: build postgres
     runs-on: ubuntu-latest
-
     steps:
-
       - name: Checkout
         uses: actions/checkout@v2
         with:
           submodules: true
           fetch-depth: 2
 
-      - name: Form variables for notification message
-        id: git_info_grab
-        run: |
-          git_stat=$(git show --stat=50)
-          git_stat="${git_stat//'%'/'%25'}"
-          git_stat="${git_stat//$'\n'/'%0A'}"
-          git_stat="${git_stat//$'\r'/'%0D'}"
-          git_stat="${git_stat// / }" # space -> 'Space En', as github tends to eat ordinary spaces
-          echo "::set-output name=git_stat::$git_stat"
-          echo "::set-output name=sha_short::$(git rev-parse --short HEAD)"
-          echo "##[set-output name=git_branch;]$(echo ${GITHUB_REF#refs/heads/})"
-
-      - name: Send notification
-        uses: appleboy/telegram-action@master
-        with:
-          to: ${{ secrets.TELEGRAM_TO }}
-          token: ${{ secrets.TELEGRAM_TOKEN }}
-          format: markdown
-          args: |
-            *@${{ github.actor }} pushed to* [${{ github.repository }}:${{steps.git_info_grab.outputs.git_branch}}](github.com/${{ github.repository }}/commit/${{steps.git_info_grab.outputs.sha_short }})
-
-            ```
-            ${{ steps.git_info_grab.outputs.git_stat }}
-            ```
-
       - name: Install postgres dependencies
         run: |
           sudo apt update
@@ -62,6 +35,38 @@ jobs:
         run: |
           ./pgbuild.sh
 
+      - name: Upload postgres build
+        uses: actions/upload-artifact@v2
+        with:
+          name: pg_build
+          path: |
+            tmp_install/bin
+            tmp_install/include
+            tmp_install/lib
+            tmp_install/share
+            tmp_install/build/src/test/regress/pg_regress
+
+  pg_regress:
+    name: postgres regression test
+    needs: pgbuild
+    runs-on: ubuntu-latest
+    steps:
+      - name: Load pg build
+        uses: actions/download-artifact@v2
+        with:
+          name: pg_build
+
+      - name: Run pg_regress
+        run: |
+          pwd
+          ls -al
+          cd build && make check
+
+  zenith_build:
+    name: build zenith crates
+    needs: pgbuild
+    runs-on: ubuntu-latest
+    steps:
       - name: Install rust
         run: |
           sudo apt install -y cargo
@@ -83,6 +88,77 @@ jobs:
         run: |
           cargo build
 
+      - name: Upload zenith build
+        uses: actions/upload-artifact@v2
+        with:
+          name: zenith_build_with_deps
+          path:  |
+            ~/.cargo/registry
+            ~/.cargo/git
+            target
+
+  zenith_integration:
+    name: zenith integration tests
+    needs: zenith_build
+    runs-on: ubuntu-latest
+    steps:
+      - name: Load pg build
+        uses: actions/download-artifact@v2
+        with:
+          name: pg_build
+
+      - name: Load zenith build
+        uses: actions/download-artifact@v2
+        with:
+          name: zenith_build_with_deps
+
       - name: Run test
         run: |
           cargo test --test test_pageserver -- --nocapture --test-threads=1
+
+  zenith_fmt:
+    name: check code formatting
+    needs: zenith_build
+    runs-on: ubuntu-latest
+    steps:
+      - name: Load zenith build
+        uses: actions/download-artifact@v2
+        with:
+          name: zenith_build_with_deps
+
+      - name: Run cargo fmt
+        run: |
+          cargo fmt -- --check
+
+  notify:
+    name: send notifications
+    needs: pgbuild
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Form variables for notification message
+        id: git_info_grab
+        run: |
+          git_stat=$(git show --stat=50)
+          git_stat="${git_stat//'%'/'%25'}"
+          git_stat="${git_stat//$'\n'/'%0A'}"
+          git_stat="${git_stat//$'\r'/'%0D'}"
+          git_stat="${git_stat// / }" # space -> 'Space En', as github tends to eat ordinary spaces
+          echo "::set-output name=git_stat::$git_stat"
+          echo "::set-output name=sha_short::$(git rev-parse --short HEAD)"
+          echo "##[set-output name=git_branch;]$(echo ${GITHUB_REF#refs/heads/})"
+
+      - name: Send notification
+        uses: appleboy/telegram-action@master
+        with:
+          to: ${{ secrets.TELEGRAM_TO }}
+          token: ${{ secrets.TELEGRAM_TOKEN }}
+          format: markdown
+          args: |
+            *@${{ github.actor }} pushed to* [${{ github.repository }}:${{steps.git_info_grab.outputs.git_branch}}](github.com/${{ github.repository }}/commit/${{steps.git_info_grab.outputs.sha_short }})
+
+            ```
+            ${{ steps.git_info_grab.outputs.git_stat }}
+            ```