ci/android: Fix and improve caching. Fix and improve android-commands.sh

.github/workflows/android.yml

@@ -35,7 +35,8 @@ jobs:
           ~/.android/avd/*
           ~/.android/avd/*/snapshots/*
           ~/.android/adb*
-        key: avd-${{ matrix.api-level }}-${{ matrix.arch }}+termux-${{ env.TERMUX }}+nextest
+          ~/__rustc_hash__
+        key: avd-${{ matrix.api-level }}-${{ matrix.arch }}+termux-${{ env.TERMUX }}+nextest+rustc-hash
     - name: Create and cache emulator image
       if: steps.avd-cache.outputs.cache-hit != 'true'
       uses: reactivecircus/android-emulator-runner@v2
@@ -44,16 +45,11 @@ jobs:
         target: ${{ matrix.target }}
         arch: ${{ matrix.arch }}
         ram-size: 2048M
-        disk-size: 5120M
+        disk-size: 7GB
         force-avd-creation: true
         emulator-options: -no-snapshot-load -noaudio -no-boot-anim -camera-back none
         script: |
-          set -e
-          wget https://github.com/termux/termux-app/releases/download/${{ env.TERMUX }}/termux-app_${{ env.TERMUX }}+github-debug_${{ matrix.arch }}.apk
-          util/android-commands.sh snapshot termux-app_${{ env.TERMUX }}+github-debug_${{ matrix.arch }}.apk
-          adb -s emulator-5554 emu avd snapshot save ${{ matrix.api-level }}-${{ matrix.arch }}+termux-${{ env.TERMUX }}
-          echo "Emulator image created."
-          pkill -9 qemu-system-x86_64
+          util/android-commands.sh init "${{ matrix.arch }}" "${{ matrix.api-level }}" "${{ env.TERMUX }}"
     - name: Save AVD cache
       if: steps.avd-cache.outputs.cache-hit != 'true'
       uses: actions/cache/save@v3
@@ -62,7 +58,22 @@ jobs:
           ~/.android/avd/*
           ~/.android/avd/*/snapshots/*
           ~/.android/adb*
-        key: avd-${{ matrix.api-level }}-${{ matrix.arch }}+termux-${{ env.TERMUX }}+nextest
+          ~/__rustc_hash__
+        key: avd-${{ matrix.api-level }}-${{ matrix.arch }}+termux-${{ env.TERMUX }}+nextest+rustc-hash
+    - uses: juliangruber/read-file-action@v1
+      id: read_rustc_hash
+      with:
+        # ~ expansion didn't work
+        path: /Users/runner/__rustc_hash__
+        trim: true
+    - name: Restore rust cache
+      id: rust-cache
+      uses: actions/cache/restore@v3
+      with:
+        path: ~/__rust_cache__
+        # The version vX at the end of the key is just a development version to avoid conflicts in
+        # the github cache during the development of this workflow
+        key: ${{ matrix.arch }}_${{ matrix.target}}_${{ steps.read_rustc_hash.outputs.content }}_${{ hashFiles('**/Cargo.toml', '**/Cargo.lock') }}_v3
     - name: Build and Test
       uses: reactivecircus/android-emulator-runner@v2
       with:
@@ -70,10 +81,20 @@ jobs:
         target: ${{ matrix.target }}
         arch: ${{ matrix.arch }}
         ram-size: 2048M
-        disk-size: 5120M
+        disk-size: 7GB
         force-avd-creation: false
         emulator-options: -no-snapshot-save -gpu swiftshader_indirect -noaudio -no-boot-anim -camera-back none -snapshot ${{ matrix.api-level }}-${{ matrix.arch }}+termux-${{ env.TERMUX }}
+        # This is not a usual script. Every line is executed in a separate shell with `sh -c`. If
+        # one of the lines returns with error the whole script is failed (like running a script with
+        # set -e) and in consequences the other lines (shells) are not executed.
         script: |
-          util/android-commands.sh sync
+          util/android-commands.sh sync_host
           util/android-commands.sh build
           util/android-commands.sh tests
+          if [[ "${{ steps.rust-cache.outputs.cache-hit }}" != 'true' ]]; then util/android-commands.sh sync_image; fi; exit 0
+    - name: Save rust cache
+      if: steps.rust-cache.outputs.cache-hit != 'true'
+      uses: actions/cache/save@v3
+      with:
+        path: ~/__rust_cache__
+        key: ${{ matrix.arch }}_${{ matrix.target}}_${{ steps.read_rustc_hash.outputs.content }}_${{ hashFiles('**/Cargo.toml', '**/Cargo.lock') }}_v3