Android Demos workflow (Picovoice/leopard)

The Android Demos workflow from Picovoice/leopard, explained and optimized by Latchkey.

CI health: F - at risk

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Source: Picovoice/leopard.github/workflows/android-demos.ymlLicense Apache-2.0View source

What it does

This is the Android Demos workflow from the Picovoice/leopard repository, a real project running GitHub Actions. It is shown here with attribution under its Apache-2.0 license.

Below, Latchkey shows a faster, safer version produced by its optimization engine.

The workflow

workflow (.yml)

name: Android Demos

on:
  workflow_dispatch:
  push:
    branches: [ master ]
    paths:
      - '.github/workflows/android-demos.yml'
      - 'demo/android/**'
      - '!demo/android/LeopardDemo/README.md'
  pull_request:
    branches: [ master, 'v[0-9]+.[0-9]+' ]
    paths:
      - '.github/workflows/android-demos.yml'
      - 'demo/android/**'
      - '!demo/android/LeopardDemo/README.md'

jobs:
  build-leopard-demo:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        java-version: [11, 17, 21]
        include:
        - java-version: 11
          gradle-version: 6.5
          agp-version: 4.1.3
        - java-version: 17
          gradle-version: 7.5
          agp-version: 7.4.2
        - java-version: 21
          gradle-version: 8.5
          agp-version: 8.2.2

    defaults:
      run:
        working-directory: demo/android/LeopardDemo

    steps:
    - uses: actions/checkout@v3

    - name: Override gradle settings
      run: sed -i "s/com.android.tools.build:gradle:[0-9]*\.[0-9]*\.[0-9]*/com.android.tools.build:gradle:${{ matrix.agp-version }}/g" build.gradle

    - name: set up JDK ${{ matrix.java-version }}
      uses: actions/setup-java@v3
      with:
        java-version: ${{ matrix.java-version }}
        distribution: 'temurin'

    - name: Use Gradle ${{ matrix.gradle-version }}
      uses: gradle/actions/setup-gradle@v3
      with:
        gradle-version: ${{ matrix.gradle-version }}

    - name: Build
      run: gradle assembleDebug

The same workflow, on Latchkey

Estimated ~20% faster on cache hits, plus fewer wasted runs and a safer supply chain. Added and changed lines are highlighted.

name: Android Demos
 
on:
  workflow_dispatch:
  push:
    branches: [ master ]
    paths:
      - '.github/workflows/android-demos.yml'
      - 'demo/android/**'
      - '!demo/android/LeopardDemo/README.md'
  pull_request:
    branches: [ master, 'v[0-9]+.[0-9]+' ]
    paths:
      - '.github/workflows/android-demos.yml'
      - 'demo/android/**'
      - '!demo/android/LeopardDemo/README.md'
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  build-leopard-demo:
    timeout-minutes: 30
    runs-on: latchkey-small
    strategy:
      matrix:
        java-version: [11, 17, 21]
        include:
        - java-version: 11
          gradle-version: 6.5
          agp-version: 4.1.3
        - java-version: 17
          gradle-version: 7.5
          agp-version: 7.4.2
        - java-version: 21
          gradle-version: 8.5
          agp-version: 8.2.2
 
    defaults:
      run:
        working-directory: demo/android/LeopardDemo
 
    steps:
    - uses: actions/checkout@v3
 
    - name: Override gradle settings
      run: sed -i "s/com.android.tools.build:gradle:[0-9]*\.[0-9]*\.[0-9]*/com.android.tools.build:gradle:${{ matrix.agp-version }}/g" build.gradle
 
    - name: set up JDK ${{ matrix.java-version }}
      uses: actions/setup-java@v3
      with:
        cache: 'maven'
        java-version: ${{ matrix.java-version }}
        distribution: 'temurin'
 
    - name: Use Gradle ${{ matrix.gradle-version }}
      uses: gradle/actions/setup-gradle@v3
      with:
        gradle-version: ${{ matrix.gradle-version }}
 
    - name: Build
      run: gradle assembleDebug

What changed

Run on Latchkey managed runners with one line (runs-on), which apply the fixes below automatically and self-heal transient failures. This example uses latchkey-small; pick the runner size that fits the job.
Cancel superseded runs when a branch or PR gets a newer push.
Cache dependency installs on the setup step so they are served from cache.
Add a job timeout so a hung step cannot burn hours of runner time.

1 third-party action is referenced by a movable tag. Pin it to the commit SHA (Latchkey resolves and applies this automatically) so a repointed tag cannot change what runs.

What Latchkey heals here

This workflow has steps that commonly fail on transient issues (network, registries, flaky browsers). On Latchkey managed runners they are detected, retried, and self-healed instead of failing your build:

Dependency installs

This workflow runs 1 job (3 with the matrix expanded) per trigger. On Latchkey the same minutes cost up to 58% less than GitHub-hosted, with zero queue time.

Actions used in this workflow

actions/checkout actions/setup-java gradle/actions/setup-gradle