master.sh

#!/usr/bin/env bash

set -eo pipefail

fail() {
  echo "$@" >&2
  exit 1
}

BUILDBOT_ROOT=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" &>/dev/null && pwd)
cd "$BUILDBOT_ROOT"

##
# Determine the command to give to the master

command="${1:-}"
shift || true

if [[ -z "$command" ]]; then
  if [[ -f master/twistd.pid ]]; then
    command="reconfig"
  else
    command="start"
  fi
fi

##
# Check necessary files are present

secrets_dir="${HALIDE_BB_MASTER_SECRETS_DIR:-secrets}"
for secret in buildbot_www_pass github_token halide_bb_pass webhook_token; do
  if [ ! -s "$secrets_dir/${secret}.txt" ]; then
    fail "Missing or empty $secrets_dir/${secret}.txt: cannot continue"
  fi
done

db_url="${HALIDE_BB_MASTER_DB_URL:-sqlite:///state.sqlite}"
if echo "$db_url" | grep -q '{DB_PASSWORD}'; then
  if [ ! -s "$secrets_dir/db_password.txt" ]; then
    fail "Missing or empty $secrets_dir/db_password.txt: required by HALIDE_BB_MASTER_DB_URL"
  fi
fi

##
# Resolve the buildbot command

if command -v buildbot >/dev/null 2>&1; then
  run=(buildbot)
else
  run=(uv run --package master buildbot)
fi

##
# Run the master

echo "Running buildbot $command master"

# Ensure the master is upgraded before starting
if [[ "$command" == "start" ]]; then
  "${run[@]}" upgrade-master master
fi

exec "${run[@]}" "$command" "$@" master