Skip to content

Subtree Update

Subtree Update #1

name: Kani Metrics Update
on:
schedule:
- cron: '0 14 * * *' # Run at 14:00 UTC every day
workflow_dispatch:
defaults:
run:
shell: bash
jobs:
update-subtree-library:
runs-on: ubuntu-latest
steps:
- name: Checkout Repository
uses: actions/checkout@v4
- name: Fetch Kani toolchain version
run: |
mkdir kani-tmp
cd kani-tmp
git init
git remote add origin https://github.com/model-checking/kani
git fetch --depth 1 origin main
git checkout main
TOOLCHAIN_DATE=$(grep -oP 'channel = "nightly-\K\d{4}-\d{2}-\d{2}' rust-toolchain.toml)
COMMIT_HASH=$(curl https://static.rust-lang.org/dist/$TOOLCHAIN_DATE/channel-rust-nightly-git-commit-hash.txt)
if [ -z "$COMMIT_HASH" ]; then
echo "Could not find commit hash on static.rust-lang.org"
exit 1
fi
echo "Kani toolchain date: ${TOOLCHAIN_DATE}"
echo "TOOLCHAIN_DATE=${TOOLCHAIN_DATE}" >> $GITHUB_ENV
echo "Kani toolchain hash: ${COMMIT_HASH}"
echo "COMMIT_HASH=${COMMIT_HASH}" >> $GITHUB_ENV
cd ..
rm -r kani-tmp
- name: Update subtree/library locally
run: |
git remote add upstream https://github.com/rust-lang/rust
git fetch upstream
# Ensure "upstream/master" branch contains the target commit
if ! git show ${COMMIT_HASH} --oneline --no-patch; then
echo "Rust commit ${COMMIT_HASH} cannot be found."
exit 1
fi
# subtree/library has the subtree-split variant of a commit that previously
# went into upstream/master. Running `git subtree split` on top of the
# original commit is much faster (my experiment when working on 280k+
# commits: 113 seconds vs 613 seconds) than using the HEAD commit from
# subtree/library as base.
SUBTREE_HEAD=$(git log --format=%s -n 1 origin/subtree/library)
echo "SUBTREE_HEAD: ${SUBTREE_HEAD}"
UPSTREAM_ONTO=$(git log --grep="$SUBTREE_HEAD" -n 1 --format=%H upstream/master)
echo "UPSTREAM_ONTO: ${UPSTREAM_ONTO}"
git checkout ${COMMIT_HASH}
git subtree split --prefix=library --onto $UPSTREAM_ONTO -b subtree/library
- name: Create Pull Request
uses: peter-evans/create-pull-request@v7
with:
title: 'Update subtree/library'
body: |
This is an automated PR to update the subtree/library branch to the changes
up to and including ${{ env.COMMIT_HASH }} of ${{ env.TOOLCHAIN_DATE }}.
branch: update-subtree/library
delete-branch: true
base: subtree/library
- name: Merge subtree/library changes
run: |
SYNC_BRANCH="sync-$TOOLCHAIN_DATE"
git checkout -t -b ${SYNC_BRANCH} origin/main
git submodule update --init
# This command may fail, which will require human intervention.
if ! git subtree merge --prefix=library subtree/library --squash; then
echo "MERGE_CONFLICTS=yes" >> $GITHUB_ENV
git commit -a -m "Merge from $COMMIT_HASH with conflicts"
else
echo "MERGE_CONFLICTS=no" >> $GITHUB_ENV
fi
sed -i "s/^channel = \"nightly-.*\"/channel = \"${TOOLCHAIN_DATE}\"/" rust-toolchain.toml
git commit "Update toolchain to ${TOOLCHAIN_DATE}" rust-toolchain.toml
- name: Create Pull Request without conflicts
if: ${{ env.MERGE_CONFLICTS == 'no' }}
uses: peter-evans/create-pull-request@v7
with:
title: 'Merge subtree update'
body: |
This is an automated PR to merge library subtree updates
up to and including ${{ env.COMMIT_HASH }} of ${{ env.TOOLCHAIN_DATE }}
into main. This is a clean merge, no conflicts were detected.
delete-branch: true
- name: Create Pull Request with conflicts
if: ${{ env.MERGE_CONFLICTS == 'yes' }}
uses: peter-evans/create-pull-request@v7
with:
title: 'Merge subtree update'
body: |
This is an automated PR to merge library subtree updates
up to and including ${{ env.COMMIT_HASH }} of ${{ env.TOOLCHAIN_DATE }}
into main. `git merge` resulted in conflicts, which require manual resolution.
Files were commited with merge conflict markers.
delete-branch: true