#! /usr/bin/env bash
set -euo pipefail
declare username host key_file ssh_opts
readarray -t ssh_opts < <(echo "$ssh_opts" | jq -r '.[]')

sshOpts=(
  -o BatchMode=yes \
  -o StrictHostKeyChecking=no \
  -o ConnectTimeout=5 \
  -o ServerAliveInterval=5 \
)
if [[ -n "${key_file}" ]]; then
  sshOpts+=(
    -i "${key_file}"
  )
fi
for ssh_opt in "${ssh_opts[@]}"; do
  sshOpts+=(
    -o "${ssh_opt}"
  )
done

for i in $(seq 1 30); do
  if ssh "${sshOpts[@]}" "${username}@${host}" "true"; then
    exit 0
  fi
  echo "Waiting for SSH (attempt #$i)..."
  sleep 5
done
echo "SSH never came up!" >&2
exit 1