/
glesys.py
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/
glesys.py
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import time
import json
from fabric.colors import green, red
from fabric.context_managers import settings
from fabric.operations import local, run
import requests
from urlparse import urljoin
from collections import namedtuple
import logging
from fabric.tasks import execute
import sys
from lib import total_silence, new_host_string
log = logging.getLogger(__name__)
class AuthFailed(Exception):
pass
class ApiError(Exception):
pass
Server = namedtuple('GleSysServer', ['server_id', 'root_password', 'ip', 'ipv6', 'hostname', 'admin_ssh_key'])
class GleSys(object):
base = 'https://api.glesys.com/'
def __init__(self, cl_user, api_key):
self.cl_user = cl_user
self.api_key = api_key
def _post(self, command, data=None):
url = urljoin(self.base, '{}/format/json'.format(command))
response = requests.post(url, data=data, auth=(self.cl_user, self.api_key))
log.info('{0} get {1}'.format(response.status_code, url))
if response.status_code == 404:
raise ApiError("url: {} gave 404!".format(url))
if response.status_code == 401:
raise AuthFailed(repr(response.text))
if response.status_code != 200:
raise Exception('expect response code 200.\n' + repr(response) + '\n' + response.text)
log.debug('response: {0}'.format(response.json()))
return response.json()
def _json_get(self, command):
url = urljoin(self.base, '{}/format/json'.format(command))
response = requests.get(url, auth=(self.cl_user, self.api_key))
log.info('{0} get {1}'.format(response.status_code, url))
if response.status_code == 404:
raise ApiError("url: {} gave 404!".format(url))
if response.status_code == 401:
raise AuthFailed(repr(response.text))
if response.status_code != 200:
raise Exception('expect response code 200.\n' + repr(response))
log.debug('response: {0}'.format(response.json()))
return response.json()
def server_create(self, platform, template_name, disk_gb, memory_mb, cpu_cores, transfer, root_password, hostname,
datacenter, admin_ssh_key, description=None, ip=None, ipv6=None):
"""
platform: Allowed: OpenVZ, VMware, Xen
disk_gb: Allowed: 5, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 120, 140, 150, 160, 200, 250, 300
memory_mb: Allowed: 128, 256, 512, 768, 1024, 1536, 2048, 2560, 3072, 3584, 4096, 5120, 6144, 7168, 8192,
9216, 10240, 11264, 12288, 14336, 16384, 20480, 24576
transfer: Allowed: 50, 100, 250, 500, 1000, 2000, 3000, 4000, 5000, 6000, 7000, 8000, 9000, 10000
password: at least 8 characters
template_name: e.g. 'Debian 7.0 64-bit',
"""
payload = {
'platform': platform, 'disksize': disk_gb, 'memorysize': memory_mb, 'cpucores': cpu_cores,
'transfer': transfer, 'rootpassword': root_password, 'hostname': hostname,
'datacenter': datacenter, 'templatename': template_name, 'description': description, 'ip': ip, 'ipv6': ipv6
}
server_json = self._post(urljoin(self.base, 'server/create'), data=payload)['response']['server']
ip_v = {4: None, 6: None}
for ip_info in server_json['iplist']:
ip_v[ip_info['version']] = ip_info['ipaddress']
return Server(
server_id=server_json['serverid'],
root_password=root_password,
ip=ip_v[4],
ipv6=ip_v[6],
hostname=server_json['hostname'],
admin_ssh_key=admin_ssh_key
)
def server_id(self, hostname):
res = self._json_get('server/list')
servers = res['response']['servers']
for server in servers:
if server['hostname'] == hostname:
return server['serverid']
def server_destroy(self, hostname, keep_ip=False):
server_id = self.server_id(hostname)
if server_id is None:
raise ApiError('No server with that hostname')
payload = {'serverid': server_id, 'keepip': int(keep_ip)}
return self._post(urljoin(self.base, 'server/destroy'), data=payload)
def account_info(self):
return self._json_get('account/info')
def read_conf(filename):
with open(filename) as conf_json:
return json.load(conf_json)
def server_conf(name):
kw = read_conf('.glesys')['servers'][name]
kw = {u: v for u, v in kw.iteritems() if u in Server._fields}
kw['server_id'] = None
return Server(**kw)
def create(name):
glesys = GleSys(**read_conf('.glesys')['api'])
conf = read_conf('.glesys')['servers'][name]
host = glesys.server_create(**conf)
local('ssh-keygen -R {}'.format(host.ip))
local('ssh-keygen -R {}'.format(host.hostname))
print "waiting for server to become available...",
wait_until_available(host)
print(green("OK"))
return host
def destroy(name):
glesys = GleSys(**read_conf('.glesys')['api'])
conf = read_conf('.glesys')['servers'][name]
glesys.server_destroy(hostname=conf['hostname'], keep_ip=conf['ip'] != '')
def wait_until_available(host):
def can_ssh():
host_str = new_host_string('root', host.ip)
with total_silence():
class NotReady(Exception):
pass
with settings(abort_exception=NotReady):
try:
ret = execute(lambda: run("echo 'OK'"), hosts=host_str)
except NotReady:
return False
else:
if host_str in ret:
if 'OK' in ret[host_str]:
return True
return False
with total_silence():
local('ping -o {}'.format(host.ip))
while True:
if can_ssh():
break
else:
secs = 1
print(red("ssh may not be up and running yet, retrying in {}s".format(secs)))
time.sleep(secs)
def recreate(name):
try:
print "waiting for server to be destroyed...",
sys.stdout.flush()
destroy(name)
with total_silence():
while True:
ip = read_conf('.glesys')['servers'][name]['ip']
result = local('ping -o -t 1 {}'.format(ip))
if result.return_code != 0:
break
except ApiError:
pass
print(green("OK."))
sys.stdout.flush()
host = create(name)
return host