cleanup cni host local ipam leak

cleanup_host_local_ipam

#!/bin/bash


exist_container=()

containsElement () {
  local e match="$1"
  shift
  for e; do [[ "$e" == "$match" ]] && return 0; done
  return 1
}

for sandbox in $(docker ps -q --no-trunc --filter label=io.kubernetes.docker.type=podsandbox); do 
  if docker inspect $sandbox | grep -q SandboxKey; then
    sandboxKey=$(docker inspect $sandbox | grep SandboxKey | awk '{print $NF}' | cut -d '"' -f 2)
    if [ -z sandboxKey ] || [ "/var/run/docker/netns/default" == "$sandboxKey" ]; then
      continue;
    fi
    exist_container+=($sandbox)
  fi
done

for ipfile in `ls /var/lib/cni/networks`; do
  if echo $ipfile | grep -q -E '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}'; then
    if ! containsElement `cat /var/lib/cni/networks/$ipfile` "${exist_container[@]}"; then
      echo "file need to cleanup:"  /var/lib/cni/networks/$ipfile
      echo "container id:" `cat /var/lib/cni/networks/$ipfile`
      if [ "1" == "$AUTO_CLEAN" ]; then
        echo "removing: $/var/lib/cni/networks/$ipfile"
        rm -f /var/lib/cni/networks/$ipfile
      fi
    fi
  fi
done