#!/bin/bash

# Copyright 2017 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

ROOT="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"/..
. ${ROOT}/hack/versions

# start_cri_containerd starts containerd and cri-containerd.
start_cri_containerd() {
  local report_dir=$1 
  if [ ! -x ${ROOT}/_output/cri-containerd ]; then
    echo "cri-containerd is not built"
    exit 1
  fi

  # Start containerd
  if [ ! -x "$(command -v containerd)" ]; then
    echo "containerd is not installed, please run hack/install-deps.sh"
    exit 1
  fi
  kill_cri_containerd
  sudo containerd -l debug &> ${report_dir}/containerd.log &

  # Wait for containerd to be running by using the containerd client ctr to check the version
  # of the containerd server. Wait an increasing amount of time after each of five attempts
  local MAX_ATTEMPTS=5
  local attempt_num=1
  until sudo ctr version &> /dev/null || (( attempt_num == MAX_ATTEMPTS ))
  do
      echo "attempt $attempt_num to connect to containerd failed! Trying again in $attempt_num seconds..."
      sleep $(( attempt_num++ ))
  done

  # Start cri-containerd
  sudo ${ROOT}/_output/cri-containerd --alsologtostderr --v 4 &> ${report_dir}/cri-containerd.log &
}

# kill_cri_containerd kills containerd and cri-containerd.
kill_cri_containerd() {
  sudo pkill containerd
}