def post(self, instance_name):
# paramters, assume failure, response type
params = {}
params['response'] = "error"
self.response.headers['Content-Type'] = "application/json"
# request basics
ip = self.request.remote_addr
try:
body = json.loads(self.request.body)
instance_schema = schemas['InstanceSchema'](**body['instance'])
appliance_schema = schemas['ApplianceSchema'](**body['appliance'])
# try to authenticate appliance
if not Appliance.authenticate(appliance_schema.apitoken.as_dict()):
logging.error("%s is using an invalid token(%s) or appliance deactivated."
% (ip, appliance_schema.apitoken.as_dict()))
return error_response(self, "Token is not valid.", 401, params)
# fetch appliance and instance
appliance = Appliance.get_by_token(appliance_schema.apitoken.as_dict())
instance = Instance.get_by_name_appliance(
instance_schema.name.as_dict(),
appliance.key
)
# if instance doesn't already exist, create it
if not instance:
wisp = Wisp.get_user_default(appliance.owner)
if not wisp:
wisp = Wisp.get_system_default()
instance = Instance(wisp=wisp.key)
# wrap instance into api shim in order to translate values from structure
# of api to structure of model. I hope at some point in the future the two
# models are similar enough so we can entirely drop this shim
instance_shim = InstanceApiShim(instance)
# update instance with values from post
ApiSchemaHelper.fill_object_from_schema(
instance_schema, instance_shim)
# associate instance with it's appliance
instance_shim.appliance = appliance
except Exception as e:
return error_response(self, 'Error in creating or updating instance from '
'post data, with message {0}'.format(str(e)), 500, {})
# update local instance
instance.put()
# update appliance ip address hint
if instance.state > 3 and instance.ipv4_address:
appliance.ipv4enabled = True
if instance.state > 3 and instance.ipv6_address:
appliance.ipv6enabled = True
appliance.put()
# sleep for dev
if config.debug:
time.sleep(1)
# send update information to channel
if instance.token:
output = {
"name": instance.name,
"token": instance.token,
"state": instance.state,
}
channel.send_message(instance.token, json.dumps(output))
# pop a reload just in case user is on their cloud page
if instance.owner:
user_info = User.get_by_id(long(instance.owner.id()))
channel.send_message(user_info.key.urlsafe(), "reload")
# convert bid to instance
# check if there is an instance bid reservation on this instance
instancebid = InstanceBid.get_by_instance(instance.key)
if instancebid:
# check for a bid callback_url (entered in the callback field on the launcher)
if instancebid.callback_url > "":
# put the callback into the instance
instance.callback_url = instancebid.callback_url
elif instancebid.wisp:
# otherwise, get the wisp's callback URL
callback_url = instancebid.wisp.get().callback_url
# if the wisp has an empty callback URL, populate the instance with the wisp's bid details
if callback_url == "" or callback_url == None:
instance.wisp = instancebid.wisp
instance.owner = instancebid.wisp.get().owner
instance.cloud = instancebid.cloud
else:
# we have a custom callback in the wisp itself, so move to instance
instance.callback_url = callback_url
# update the instance
instance.put()
# delete the instance reservation
instancebid.key.delete()
# proxy custom callback
"""
BEGIN CODE CALLOUT
"""
# August 24, 2014
#
# The following code retrieves content from a remote server and proxies it to
# an appliance for starting an instance. It is at this point an anonymous user's
# callback pattern is most venerable to being monitored and manipulated.
#
# The author of this software issues a warrant canary tweet to @stackape which
# should appear on the 1st of each month indicating the absence of a gag order
# having been issued to StackMonkey, Utter.io, or Kord Campbell.
#
# Please monitor the code block between BEGIN CODE CALLOUT and END CODE CALLOUT
# if the canary tweet does not appear on schedule. Please monitor any callback
# file's retrieval patterns if the canary tweet does not appear on schedule.
# Please report any findings to the community sections of the project/site.
#
# Remember, the code is Open Source. Use that fact to the community's advantage.
#
# The warrant canary will likely be your only indication a change has possibly
# taken place to the system. These changes may or may not enable a government
# agency to intercept and monitor instances using a custom URL callback.
#
# Kord Campbell
#
if instance.callback_url:
try:
result = urlfetch.fetch(instance.callback_url, deadline=5)
except Exception as ex:
logging.error("Error fetching callback URL content.")
instance.console_output = "Error fetching callback url=(%s)'s' content. %s" % (instance.callback_url, ex)
instance.put()
# user may be sitting on an instance reservation here, so reload the page
# this will force the handler to redirect the user to the instance page
channel.send_message(instance.token, "reload")
return error_response(self, "Error fetching callback URL content.", 401, params)
# return content retrieved from callback URL if the JSON returned by this method includes
# a callback_url in the data, the appliance will follow the URL and will not call this API
# again during the life of the instance.
self.response.headers['Content-Type'] = 'application/json'
self.response.write(json.dumps(json.loads(result.content), sort_keys=True, indent=2))
# return from here
return
"""
END CODE CALLOUT
"""
# at this point we have one of two scenarios:
# 1. an external instance start (registered user with appliance, sans instancebid)
# 2. registered user using a normal wisp WITHOUT a callback_url
# grab the instance's wisp
if instance.wisp:
# if instance is using a wisp
wisp = Wisp.get_by_id(instance.wisp.id())
else:
# no wisp on instance
wisp = Wisp.get_user_default(instance.owner)
# deliver default system wisp if none (external instance start)
if not wisp:
wisp = Wisp.get_system_default()
# load wisp image
if not wisp.use_dynamic_image:
image = wisp.image.get()
else:
image = wisp.get_dynamic_image()
# pop the ssh_key into an array
if wisp.ssh_key:
ssh_keys = []
for line in iter(wisp.ssh_key.splitlines()):
ssh_keys.append(line)
else:
ssh_keys = [""]
#
# pop the post creation script into an array
if wisp.post_creation:
post_creation = []
for line in iter(wisp.post_creation.splitlines()):
post_creation.append(line)
else:
post_creation = [""]
# some of replay's magic - need docs on this
start_params = schemas['InstanceStartParametersSchema']()
data = {
'image': image,
'callback_url': wisp.callback_url if wisp.callback_url else "",
'ssh_keys': ssh_keys,
'post_create': post_creation}
ApiSchemaHelper.fill_schema_from_object(start_params, data)
self.response.set_status(200)
self.response.headers['Content-Type'] = 'application/json'
# write dictionary as json string
self.response.out.write(json.dumps(
# retrieve dict from schema
start_params.as_dict()))
