ZacharyZhang-NY
13ccab980c
GitHub Actions cache isolation lets a run restore caches only from its own ref or the default branch. Releases run on tag refs and nothing ever ran on main, so release.yml's rust-cache never restored anything — every release compiled all 62 crates cold on five targets (~50 min, gated by Windows at ~49.5 min). warm-cache.yml builds the same release-dist profile with the same rust-cache key on main (dep-affecting pushes — including each release's version-bump commit — plus a weekly refresh against 7-day eviction and manual dispatch). Tag builds then restore a warm default-branch cache; the remaining cost is workspace-crate compilation + the codegen-units=1 thin-LTO link, which is the deliberate release-hardening tradeoff.
86 lines
2.7 KiB
YAML
86 lines
2.7 KiB
YAML
name: Warm build cache
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# Release builds run on TAG refs, and GitHub Actions cache isolation only
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# lets a run restore caches created on its OWN ref or the DEFAULT branch.
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# No workflow ran on `main`, so every release compiled the whole workspace
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# cold on all five targets (~50 min wall clock, gated by Windows). This
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# workflow builds the same `release-dist` profile on `main` so tag builds
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# restore a warm default-branch cache.
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#
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# Triggers: dependency-affecting pushes to main (each release's version-bump
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# commit warms the cache for the NEXT release), a weekly refresh so the
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# cache never hits GitHub's 7-day unused-eviction, and manual dispatch.
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#
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# The setup steps mirror release.yml's build job (toolchain, target,
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# dotslash/protoc, rust-cache key) — keep them in lockstep, or the cache
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# key won't match and releases go back to cold builds.
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on:
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push:
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branches: ["main"]
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paths:
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- "Cargo.lock"
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- "Cargo.toml"
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- "rust-toolchain.toml"
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- ".github/workflows/warm-cache.yml"
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schedule:
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- cron: "17 5 * * 1"
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workflow_dispatch:
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permissions:
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contents: read
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env:
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CARGO_TERM_COLOR: always
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concurrency:
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group: warm-cache
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cancel-in-progress: true
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jobs:
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warm:
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name: warm (${{ matrix.target }})
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strategy:
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fail-fast: false
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matrix:
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include:
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- target: aarch64-apple-darwin
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os: macos-14
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- target: x86_64-apple-darwin
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os: macos-14
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- target: x86_64-unknown-linux-gnu
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os: ubuntu-24.04
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- target: aarch64-unknown-linux-gnu
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os: ubuntu-24.04-arm
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- target: x86_64-pc-windows-msvc
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os: windows-2022
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runs-on: ${{ matrix.os }}
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steps:
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- uses: actions/checkout@v4
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- name: Install toolchain (rust-toolchain.toml)
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run: rustup show
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- name: Add build target
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run: rustup target add ${{ matrix.target }}
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- name: Install dotslash (protoc launcher)
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run: cargo install dotslash --locked
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- name: Install protoc (Windows PATH fallback)
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if: runner.os == 'Windows'
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shell: pwsh
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run: |
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$url = "https://github.com/protocolbuffers/protobuf/releases/download/v29.3/protoc-29.3-win64.zip"
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Invoke-WebRequest -Uri $url -OutFile protoc.zip
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Expand-Archive protoc.zip -DestinationPath "$env:USERPROFILE\protoc"
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Add-Content $env:GITHUB_PATH "$env:USERPROFILE\protoc\bin"
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# Same key as release.yml so tag builds restore this cache verbatim.
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- uses: Swatinem/rust-cache@v2
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with:
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key: ${{ matrix.target }}
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- name: Build kigi (release-dist)
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run: cargo build --profile release-dist -p kigi-bin --locked --target ${{ matrix.target }}
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