kubectl port forward in background for concourse

ci-port-forward

#!/bin/bash
set -eo pipefail
set -x
error1() {
    echo "exit whole script!!!"
    exit 1
}

SCRIPT_PATH="$(cd "$(dirname "$0")"; pwd -P)"

kubectl --context=$MY_CLUSTER -n ci port-forward  svc/concourse 8080   >/dev/null 2>&1 &
pid=$!
echo $pid
if [ $pid -eq 0 ]; then
    trap 'error1' ERR
fi
new_job_started="$(jobs -n)"

if [ -n "$new_job_started" ];then
    echo "started"
else
    echo "not started"
    exit 1
fi

# kill the port-forward regardless of how this script exits
trap '{
    # echo killing $pid
    kill $pid
}' EXIT

# wait for $localport to become available
while ! nc -vz localhost 8080 > /dev/null 2>&1 ; do
    # echo sleeping
    sleep 0.1
done

# do the thing
kill $pid