name: Refresh SQLite BTF blobs

# gen_btf.sh scrapes sqlite.org's chronology for every release and builds the

# per-version BTF blobs the loader needs. It is idempotent (skips versions whose

# blob already exists), so a scheduled run only does work when SQLite has shipped

# a release not yet committed under .btf-cache. New blobs + the regenerated

# sqlite-sources.tsv are committed back to the branch.

on:

schedule:

# Mondays 06:00 UTC. SQLite releases only a handful of times a year, so weekly

# polling is ample; the run is a no-op (just the chronology fetch) when nothing

# new shipped.

- cron: "0 6 * * 1"

workflow_dispatch:

inputs:

force:

description: "Rebuild every blob even if it already exists (FORCE=1)"

type: boolean

default: false

permissions:

contents: write

concurrency:

group: btf-refresh

cancel-in-progress: false

jobs:

refresh:

runs-on: ubuntu-latest

steps:

- uses: actions/checkout@v7

# cc + unzip are already on the runner; dwarves provides pahole, which

# gen_btf.sh uses to emit .BTF into the compiled amalgamation.

- name: Install build deps

run: |

sudo apt-get update -qq

sudo apt-get install -y -qq dwarves unzip

# OUT_DIR points at the committed canonical store (.btf-cache); the loader

# resolves it relative to the binary, so build/btf is only a local symlink.

- name: Generate missing BTF blobs

env:

OUT_DIR: ${{ github.workspace }}/.btf-cache

FORCE: ${{ inputs.force && '1' || '' }}

run: ./gen_btf.sh

- name: Commit new blobs

run: |

if git diff --quiet -- .btf-cache; then

echo "No BTF changes; nothing to commit."

exit 0

fi

git config user.name "github-actions[bot]"

git config user.email "41898282+github-actions[bot]@users.noreply.github.com"

git add .btf-cache

added=$(git diff --cached --name-only --diff-filter=A -- '.btf-cache/sqlite-*.btf' | wc -l | tr -d ' ')

git commit -m "ci: refresh SQLite BTF blobs (${added} new)"

git push