#!/bin/bash
AWS=/root/.local/bin/aws
REGION=eu-west-1
HUDSON_SLAVE_AMI_ID=ami-0b2277821ed687ab8
echo Launching instance...
instanceid=`$AWS ec2 run-instances --image-id $HUDSON_SLAVE_AMI_ID --count 1 --instance-type c5d.4xlarge --key-name Axel --security-groups "Sailing Analytics App" --region $REGION --tag-specifications 'ResourceType=instance,Tags=[{Key=Name,Value=Hudson Ubuntu Slave Java 11}]' --instance-initiated-shutdown-behavior terminate | tee /tmp/slavelaunch.out | jq .Instances[0].InstanceId | sed -e 's/"//g'`
if [ "$instanceid" = "" ]; then
  echo Error launching instance
  exit 1
else
  echo Instance ID is $instanceid
  while [ "`$AWS ec2 describe-instances --region $REGION --instance-ids $instanceid | jq .Reservations[0].Instances[0].State.Name`" != "\"running\"" ]; do
    echo Instance $instanceid not running yet\; trying again...
    sleep 5
  done
  echo Instance $instanceid seems running now
  private_ip=`$AWS ec2 describe-instances --region $REGION --instance-ids $instanceid | jq .Reservations[0].Instances[0].PrivateIpAddress | sed -e 's/"//g'`
  echo Probing for SSH on private IP $private_ip
  while su - hudson -c "ssh -o ConnectTimeout=10,StrictHostKeyChecking=no hudson@$private_ip ls >/dev/null"; do
    echo SSH daemon not reachable yet. Trying again...
  done
  echo SSH daemon reached. State should be ready to connect to now.
  su - hudson -c "ssh -o StrictHostKeyChecking=no hudson@$private_ip \"/opt/sapjvm_8/bin/java -jar slave.jar; sudo /sbin/shutdown -h now\""
  $AWS ec2 terminate-instances --instance-ids $instanceid
fi