Refactor CI into composite actions + repo variables
The workflow was mostly inline bash. Moves the logic into reusable composite actions under .gitea/actions/, keeps host paths in the YOCTO_HOME repo variable, adds a workflow_dispatch skip-build option and publishes step outputs (build dir, image list, kas path).
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name: build-image
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description: >-
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Build a kas project in a persistent directory and expose the flashable
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images. The workspace is synced into the build dir instead of built in
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place, because checkout cleans ignored files (build/, extern/) and bitbake
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reuse depends on sstate-cache surviving between runs.
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inputs:
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project:
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description: kas configuration file, relative to the repository
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required: false
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default: .config.yaml
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machine:
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description: Machine the images are deployed for
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required: false
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default: raspberrypi4-64
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image-prefix:
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description: Artifact filename prefix in the deploy dir
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required: false
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default: rpilinux-image
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skip-build:
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description: Set to true to only collect images from an existing build dir
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required: false
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default: "false"
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outputs:
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build-dir:
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description: Persistent project directory on the runner
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value: ${{ steps.locate.outputs.build-dir }}
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image-dir:
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description: Deploy dir bitbake wrote to
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value: ${{ steps.locate.outputs.image-dir }}
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images:
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description: Newline separated artifact filenames
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value: ${{ steps.collect.outputs.images }}
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runs:
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using: composite
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steps:
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- name: Sync workspace into persistent build dir
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if: ${{ inputs.skip-build != 'true' }}
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shell: bash
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run: |
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set -euo pipefail
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SRC="$(pwd)"
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DST="${YOCTO_HOME:-$HOME/yocto-build}/$(basename "$GITHUB_REPOSITORY")"
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# checkout deletes ignored files, so the build tree must live elsewhere
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if [ "$SRC" = "$DST" ]; then
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echo "::error::workspace == build dir ($SRC); point YOCTO_HOME somewhere else"
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exit 1
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fi
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echo "syncing $SRC -> $DST"
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mkdir -p "$DST"
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# .git stays (kas requires a repo); extern/ + build/ only exist in DST,
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# so --delete cannot reach them
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rsync -a --delete --exclude /build/ --exclude /extern/ ./ "$DST/"
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- name: kas build
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if: ${{ inputs.skip-build != 'true' }}
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shell: bash
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run: |
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set -euo pipefail
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cd "${YOCTO_HOME:-$HOME/yocto-build}/$(basename "$GITHUB_REPOSITORY")"
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git config --global --add safe.directory "$PWD" || true
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"${YOCTO_HOME:-$HOME/yocto-build}/venv/bin/kas" build
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- name: Locate deploy dir
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id: locate
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shell: bash
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run: |
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set -euo pipefail
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BUILD_DIR="${YOCTO_HOME:-$HOME/yocto-build}/$(basename "$GITHUB_REPOSITORY")"
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IMAGE_DIR="$(find "$BUILD_DIR/build" -type d -path "*/tmp/deploy/images/${{ inputs.machine }}" | head -1)"
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if [ -z "$IMAGE_DIR" ]; then
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echo "::error::no deploy dir for ${{ inputs.machine }} under $BUILD_DIR/build"
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exit 1
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fi
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echo "build-dir=$BUILD_DIR" >> "$GITHUB_OUTPUT"
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echo "image-dir=$IMAGE_DIR" >> "$GITHUB_OUTPUT"
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- name: Collect artifacts
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id: collect
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shell: bash
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run: |
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set -euo pipefail
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IMAGE_DIR="${{ steps.locate.outputs.image-dir }}"
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shopt -s nullglob
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# only the timestamped names: the short ones are hardlinks to the same
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# inode and would upload every image twice
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FILES=("${IMAGE_DIR}/${{ inputs.image-prefix }}."*.rootfs-[0-9]*.wic.* \
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"${IMAGE_DIR}/${{ inputs.image-prefix }}-*.rootfs-[0-9]*.wic.*")
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if [ "${#FILES[@]}" -eq 0 ]; then
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echo "::error::no flashable .wic image for ${{ inputs.machine }} in $IMAGE_DIR"
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exit 1
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fi
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mkdir -p dist
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cp -v "${FILES[@]}" dist/
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( cd dist && sha256sum * > SHA256SUMS )
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ls -lh dist
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printf 'images=%s\n' "$(ls dist | tr '\n' ' ')" >> "$GITHUB_OUTPUT"
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- name: Summarise
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shell: bash
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run: |
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set -euo pipefail
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SUMMARY="${GITHUB_STEP_SUMMARY:-}"
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[ -n "$SUMMARY" ] || exit 0
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{
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echo "## ${{ inputs.image-prefix }} for ${{ inputs.machine }}"
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echo
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echo "| artifact | sha256 |"
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echo "| --- | --- |"
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( cd dist && while read -r sum file; do
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[ "$file" = SHA256SUMS ] || echo "| \`$file\` | \`${sum:0:16}\` |"
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done < SHA256SUMS )
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echo
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echo "Flash with \`bzcat <image> | sudo dd of=/dev/sdX bs=4M status=progress\`."
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echo
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echo "Incremental build tree: \`${{ steps.locate.outputs.build-dir }}\`"
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} >> "$SUMMARY"
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@@ -0,0 +1,37 @@
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name: check-build-host
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description: >-
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Report the build host and fail fast when executables, CPU or disk that the
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build needs are missing - a mistake should cost seconds, not hours.
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inputs:
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tools:
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description: Space separated executables that must be on PATH
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required: false
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default: git python3
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min-disk-gb:
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description: Warn when the build filesystem has less than this much free
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required: false
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default: "100"
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runs:
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using: composite
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steps:
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- name: Host report
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shell: bash
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run: |
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set -euo pipefail
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echo "os : $(. /etc/os-release && echo "$PRETTY_NAME") ($(uname -m), $(uname -r))"
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echo "user : $(id -un) home=$HOME"
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echo "cpu : $(nproc) cores / $(awk '/MemTotal/{printf "%.0fG", $2/1048576}' /proc/meminfo) ram"
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df -h . | tail -1 | sed 's/^/disk : /'
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missing=""
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for tool in ${{ inputs.tools }}; do
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command -v "$tool" >/dev/null 2>&1 || missing="$missing $tool"
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done
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if [ -n "$missing" ]; then
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echo "::error::Host is missing:$missing"
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echo "Install them on the runner host, e.g. sudo apt-get install -y $missing"
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exit 1
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fi
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free_gb="$(df --output=avail -BG . | tail -1 | tr -d ' ')"
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if [ "$free_gb" -lt "${{ inputs.min-disk-gb }}" ]; then
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echo "::warning::only ${free_gb}G free on $(df --output=target . | tail -1); expected >= ${{ inputs.min-disk-gb }}G"
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fi
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@@ -0,0 +1,34 @@
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name: setup-kas
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description: Create or reuse the persistent python venv that holds kas.
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inputs:
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requirement:
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description: pip requirement for kas (pinned, e.g. kas==5.5)
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required: false
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default: kas
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outputs:
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kas:
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description: Absolute path of the kas executable
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value: ${{ steps.venv.outputs.kas }}
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reused:
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description: "true when the venv already existed (warm run)"
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value: ${{ steps.venv.outputs.reused }}
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runs:
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using: composite
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steps:
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- name: Prepare venv
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id: venv
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shell: bash
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run: |
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set -euo pipefail
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BUILD_ROOT="${YOCTO_HOME:-$HOME/yocto-build}"
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VENV="$BUILD_ROOT/venv"
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mkdir -p "$BUILD_ROOT"
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if [ -d "$VENV" ]; then
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echo "reused=true" >> "$GITHUB_OUTPUT"
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else
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echo "reused=false" >> "$GITHUB_OUTPUT"
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python3 -m venv "$VENV"
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fi
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"$VENV/bin/pip" install --quiet --upgrade "${{ inputs.requirement }}"
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echo "kas=$VENV/bin/kas" >> "$GITHUB_OUTPUT"
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echo "kas $($VENV/bin/kas --version) in $VENV"
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