mclaunch.py

# WIP 

import boto3
import logging
import requests
import spur

AMI_ID = "ami-1c1d9664"
SG_IDS = ['sg-f3d1e28b']
MINECRAFT_VERSION = '1.12.2'
MINECRAFT_VERSION_URL = 'https://launchermeta.mojang.com/mc/game/version_manifest.json'

logging.basicConfig(level=logging.INFO)

ec2 = boto3.resource('ec2')
client = boto3.client('ec2')

def new_server(world_name):
    rsp = client.run_instances(
        ImageId=AMI_ID,
        InstanceType='m4.large',
        KeyName='mclaunch',
        MaxCount=1,
        MinCount=1,
        SecurityGroupIds=SG_IDS,
        TagSpecifications=[
            {
                'ResourceType': 'instance',
                'Tags': [ {'Key': 'world', 'Value': world_name} ]
            },
            {
                'ResourceType': 'volume',
                'Tags': [ {'Key': 'world', 'Value': world_name} ]
            }
        ]
        # DryRun=True
    )

    instance_id = rsp.get('Instances')[0].get('InstanceId')
    instance = ec2.Instance(instance_id)
    instance.wait_until_running()
    logging.info('new instance running')
    return instance


def find_instance(world_name):
    rsp = client.describe_instances(
        Filters=[
            {
                'Name': 'instance-state-name',
                'Values': [
                    'pending',
                    'running',
                    'stopping'
                    'stopped'
                ]
            },
            {
                'Name': 'tag:world',
                'Values': [ world_name ]
            }
        ]
    )

    instances = rsp.get('Reservations', [])[0].get('Instances', [])
    if len(instances) > 1:
        raise Exception('too many instances?!?', ids)
    elif len(instances) == 0:
        return None
    return ec2.Instance(instances[0].get('InstanceId'))

def find_minecraft_server_url(version):
    rpy = requests.get(MINECRAFT_VERSION_URL).json()
    for v in rpy.get('versions', []):
        if v.get('id') == version:
            manifest_url = v.get('url')
            rpy = requests.get(manifest_url).json()
            return rpy.get('downloads').get('server').get('url')


# instance = find_instance('NovaMundo')
instance = new_server('robin')

sh = spur.SshShell(
    instance.public_ip_address,
    username='ubuntu',
    missing_host_key=spur.ssh.MissingHostKey.accept,
    private_key_file='/home/ubuntu/secrets/id_rsa')

# sudo apt-add-repository -y ppa:webupd8team/java
sh.run('sudo apt-get update'.split())
# sudo DEBIAN_FRONTEND=noninteractive apt-get upgrade -uy
# echo "oracle-java8-installer shared/accepted-oracle-license-v1-1 select true" | sudo debconf-set-selections
sh.run('sudo apt-get install -y oracle-java8-installer rlwrap')

server_url = find_minecraft_server_url(MINECRAFT_VERSION)
sh.run(['wget', '-O', 'server.jar', server_url])
with sh.open('eula.txt', 'w') as eula_f:
    eula_f.write('eula=true\n')
# sh.run('tmux new java -jar server.jar nogui'.split())
print('tmux new java  -Xms1G -Xmx7680M -jar server.jar nogui')
print(instance.public_ip_address)