gvisor/.buildkite/hooks/pre-command

set -euo pipefail

source .buildkite/hooks/libhook

clear_docker_containers

# Use a per-day bazel remote cache. As the cache object's TTL expires, they are
# deleted on an ongoing basis. Such partial deletion can break the cache state.
# Using per day cache will ensure that builds triggered on a certain day have
# the full bazel remote cache to use. TTL of the cache must be >1 day.
export BAZEL_REMOTE_CACHE="--remote_cache=https://storage.googleapis.com/gvisor-buildkite-bazel-cache/cache-$(date +%Y-%m-%d) --google_default_credentials"

if POSIXLY_CORRECT=true df --local --output=pcent,ipcent,target | grep -vE '/snap/' | grep -qE '9[4-9]%|100%'; then
  echo "Disk usage has reached critical level, node is bad." >&2
  echo "Automated monitoring should recycle this node soon." >&2
  echo "If this made your build pipeline fail, sorry!" >&2
  echo "Try your luck again." >&2
  sudo df -h --local | sed -r 's/^/[df] /' >&2
  sleep 10
  killall buildkite-agent
  exit 1
fi

if [[ "${BUILDKITE_PIPELINE_NAME:-}" == "Pipeline" ]]; then
  # Check that the target branch exists.
  git fetch origin "${BUILDKITE_BRANCH}" || {
    echo "Branch ${BUILDKITE_BRANCH} no longer exists; it was probably deleted by the time we got to it." >&2
    exit 1
  }
fi

# Download any build-specific configuration that has been uploaded.
# This allows top-level steps to override all subsequent steps.
buildkite-agent artifact download 'tools/bazeldefs/*' . || true

# Install packages we need. Docker must be installed and configured,
# as should Go itself. We just install some extra bits and pieces.
function install_pkgs() {
  export DEBIAN_FRONTEND=noninteractive
  while true; do
    if sudo -E apt-get update -q && sudo -E apt-get install -qy "$@"; then
      break
    fi
  done
}
install_pkgs make linux-libc-dev graphviz jq curl binutils gnupg gnupg-agent \
  gcc pkg-config apt-transport-https ca-certificates \
  software-properties-common rsync kmod systemd unzip

# Install headers, only if available.
if test -n "$(apt-cache search --names-only "^linux-headers-$(uname -r)$")"; then
  install_pkgs "linux-headers-$(uname -r)"
elif test -n "$(apt-cache search --names-only "^linux-gcp-headers-$(uname -r | cut -d- -f1-2)$")"; then
  install_pkgs "linux-gcp-headers-$(uname -r | cut -d- -f1-2)"
fi

set -x

# Setup for parallelization with PARTITION and TOTAL_PARTITIONS.
export PARTITION=${BUILDKITE_PARALLEL_JOB:-0}
PARTITION=$((${PARTITION}+1)) # 1-indexed, but PARALLEL_JOB is 0-indexed.
export TOTAL_PARTITIONS=${BUILDKITE_PARALLEL_JOB_COUNT:-1}

if [[ "${BUILDKITE_BRANCH}" =~ ^test/ ]]; then
  # STABLE_VERSION depends on the most recent tag, so let's set the same tag
  # for all tests changes to better utilize the bazel cache. We have to be sure
  # that binaries depends only on code changes but not metadata such as commit
  # id.

  # LINT.IfChange
  git tag -f buildkite-test-branch
  # LINT.ThenChange(../../tools/make_release.sh)
fi

# LINT.IfChange
export RUNTIME="buildkite_runtime"
# LINT.ThenChange(post-command)
if [ -d "/tmp/${RUNTIME}/" ]; then
  sudo rm -rf "/tmp/${RUNTIME}/"
fi

# If running in a container, set the reload command appropriately.
if [[ -x /tmp/buildkite-reload-host-docker/reload ]]; then
  export DOCKER_RELOAD_COMMAND='/tmp/buildkite-reload-host-docker/reload'
else
  export DOCKER_RELOAD_COMMAND='sudo systemctl reload docker'
fi

if [[ "${BUILDKITE_PIPELINE_INSTALL_RUNTIME:-}" == "true" ]]; then
  # Ensure Docker has experimental enabled, install runtimes.
  echo 'Current Docker daemon configuration:' >&2
  cat /etc/docker/daemon.json >&2
  HAD_EXPERIMENTAL="$(cat /etc/docker/daemon.json | jq '.experimental')"
  if [[ -n "${STAGED_BINARIES:-}" ]]; then
    # Used `runsc` from STAGED_BINARIES instead of building it from scratch.
    export BUILDKITE_STAGED_BINARIES_DIRECTORY="$(mktemp -d)"
    gsutil cat "$STAGED_BINARIES" \
      | tar -C "$BUILDKITE_STAGED_BINARIES_DIRECTORY" -zxvf - runsc
    chmod +x "$BUILDKITE_STAGED_BINARIES_DIRECTORY/runsc"
    sudo "$BUILDKITE_STAGED_BINARIES_DIRECTORY/runsc" install \
      --experimental=true --runtime="${RUNTIME}" \
      -- "${RUNTIME_ARGS:-}"
  else
    make sudo TARGETS=//runsc:runsc \
      ARGS="install --experimental=true --runtime=${RUNTIME} -- ${RUNTIME_ARGS:-}"
  fi
  if [[ "$HAD_EXPERIMENTAL" != true ]]; then
    # WARNING: We may be running in a container when this command executes.
    # This only makes sense if Docker's `live-restore` feature is enabled.
    echo 'Restarting Docker daemon with this new configuration:' >&2
    cat /etc/docker/daemon.json >&2
    sudo systemctl restart docker
  else
    # If experimental-ness was already enabled, we don't need to restart, as the
    # only thing we modified is the list of runtimes, which can be reloaded with
    # just a SIGHUP.
    echo 'Reloading Docker daemon with this new configuration:' >&2
    cat /etc/docker/daemon.json >&2
    bash -xc "$DOCKER_RELOAD_COMMAND"
  fi
fi

# Helper for benchmarks, based on the branch.
if test "${BUILDKITE_BRANCH}" = "master"; then
  export BENCHMARKS_OFFICIAL=true
else
  export BENCHMARKS_OFFICIAL=false
fi

# Clear existing profiles.
sudo rm -rf /tmp/profile

# Allow to read dmesg for all users. It is required for the syslog test.
sudo sysctl -w kernel.dmesg_restrict=0

# Download credentials, if a release agent.
if test "${BUILDKITE_AGENT_META_DATA_QUEUE}" = "release"; then
  # Pull down secrets.
  gcloud secrets versions access --secret="repo-key" --format='get(payload.data)' latest | tr '_-' '/+' | base64 -d  > repo.key

  # Configure the Docker credential helper (to push images).
  gcloud auth configure-docker -q
  gcloud auth configure-docker -q us-central1-docker.pkg.dev
fi

sudo sysctl -w kernel.print-fatal-signals=1

pipeline_add_env() {
  sed -i "/^env:/a\  $1: '$2'" .buildkite/pipeline.yaml
}

# Try to skip unaffected tests on pre-submits.
# BUILDKITE_PIPELINE_ID is set only on the pipeline upload step.
if [[ -n "${BUILDKITE_PIPELINE_ID}" && "${BUILDKITE_BRANCH}" =~ ^test/ ]]; then
  # Skip load-all-test-images tests if the change doesn't affect images.
  if ./tools/builkite-check-paths.sh images/ tools/images.mk Makefile; then
    echo "Skip load-all-test-images tests"
    pipeline_add_env SKIP_LOADING_IMAGES 1
  fi
fi