# TODO
# 1. Allow user of realm ungleich-admin to perform any action on
# any user vm.
import json
from helper import check_otp, add_otp_args, add_vmid_args
from flask import Flask
from flask_restful import Resource, Api, reqparse
from decouple import config
from uuid import uuid4
from etcd3_wrapper import Etcd3Wrapper
from specs_parser import SpecsParser
from functools import wraps
app = Flask(__name__)
api = Api(app)
client = Etcd3Wrapper()
# CreateVM argparser
createvm_argparser = reqparse.RequestParser()
createvm_argparser.add_argument("specs", type=dict, required=True)
createvm_argparser.add_argument("image_uuid", type=str, required=True)
add_otp_args(createvm_argparser)
# CreateImage argparser
createimage_argparser = reqparse.RequestParser()
createimage_argparser.add_argument("uuid", type=str, required=True)
createimage_argparser.add_argument("name", type=str, required=True)
createimage_argparser.add_argument("image_store", type=str, required=True)
# DeleteVM argparser
deletevm_argparser = reqparse.RequestParser()
add_vmid_args(add_otp_args(deletevm_argparser))
# VMStatus argparser
vmstatus_argparser = reqparse.RequestParser()
add_vmid_args(vmstatus_argparser)
# StartVM argparser
startvm_argparser = reqparse.RequestParser()
add_vmid_args(add_otp_args(startvm_argparser))
# UserVM argparser
uservm_argparser = reqparse.RequestParser()
add_otp_args(uservm_argparser)
# Specs parser
specs_parser = SpecsParser(exceptional_devices=["cpu"])
# AddHost argparser
addhost_argparser = reqparse.RequestParser()
addhost_argparser.add_argument("hostname", type=str, required=True)
addhost_argparser.add_argument("specs", type=dict, required=True)
add_otp_args(addhost_argparser)
def is_image_valid(image_uuid):
images = client.get_prefix("/v1/image/")
return image_uuid in [i.key.split("/")[-1] for i in images]
class CreateVM(Resource):
def post(self):
createvm_args = createvm_argparser.parse_args()
name, realm, token, specs, image_uuid = (
createvm_args.name,
createvm_args.realm,
createvm_args.token,
createvm_args.specs,
createvm_args.image_uuid,
)
if check_otp(name, realm, token) == 200:
# User is good
if is_image_valid(image_uuid):
if not specs_parser.transform_specs(specs):
return (
{
"message": f"""Invalid unit - Please use following units {specs_parser.get_allowed_units()}"""
},
400,
)
print(specs)
vm_key = f"/v1/vm/{uuid4().hex}"
vm_entry = {
"owner": name,
"specs": specs,
"hostname": "",
"status": "REQUESTED_NEW",
"image_uuid": image_uuid,
}
client.put(vm_key, vm_entry, value_in_json=True)
return {"message": "VM Creation Queued"}, 200
else:
return {"message": "Image uuid not valid"}
else:
return {"message": "Invalid Credentials"}, 400
class DeleteVM(Resource):
def post(self):
deletevm_args = deletevm_argparser.parse_args()
name, realm, token, vmid = (
deletevm_args.name,
deletevm_args.realm,
deletevm_args.token,
deletevm_args.vmid,
)
if check_otp(name, realm, token) == 200:
# User is good
vmentry_etcd = client.get(f"/v1/vm/{vmid}").value
if vmentry_etcd:
vmentry_etcd = json.loads(vmentry_etcd)
vmentry_etcd["status"] = "REQUESTED_DELETE"
client.put(f"/v1/vm/{vmid}", vmentry_etcd,
value_in_json=True)
return {"message": "VM Deletion Queued"}, 200
else:
return {"message": "Invalid VM ID"}
else:
return {"message": "Invalid Credentials"}, 400
class VmStatus(Resource):
def get(self):
args = vmstatus_argparser.parse_args()
r = client.get(f"/v1/vm/{args.vmid}").value
print(r)
if r:
r = dict(json.loads(r.decode("utf-8")))
return r
return {"Message": "Not Found"}
class CreateImage(Resource):
def post(self):
image_stores = list(client.get_prefix("/v1/image_store/"))
args = createimage_argparser.parse_args()
image_file_uuid = args.uuid
image_store_name = args.image_store
file_entry = client.get(f"/v1/files/{image_file_uuid}")
if file_entry is None:
return (
{"Message": f"Image File with uuid '{image_file_uuid}' Not Found"},
400,
)
file_entry_value = json.loads(file_entry.value)
image_store = list(
filter(
lambda s: json.loads(s.value)["name"] == image_store_name, image_stores
)
)
if not image_store:
return {"Message": f"Store '{image_store_name}' does not exists"}, 400
image_store = image_store[0]
image_entry_json = {
"status": "TO_BE_CREATED",
"owner": file_entry_value["owner"],
"filename": file_entry_value["filename"],
"name": args.name,
"store_name": image_store_name,
"visibility": "public",
}
client.put(f"/v1/image/{image_file_uuid}", json.dumps(image_entry_json))
return {"Message": "Image successfully created"}
class ListPublicImages(Resource):
def get(self):
images = client.get_prefix("/v1/image/")
r = {}
for image in images:
r[image.key.split("/")[-1]] = json.loads(image.value)
return r, 200
class StartVM(Resource):
def post(self):
args = startvm_argparser.parse_args()
name, realm, token, vm_uuid = args.name, args.realm, args.token, args.vmid
if check_otp(name, realm, token) == 200:
vm = client.get(f"/v1/vm/{vm_uuid}", value_in_json=True)
if vm.value["owner"] != name:
return {"message": "Invalid User"}
if vm:
vm.value["status"] = "REQUESTED_START"
client.put(vm.key, json.dumps(vm.value))
return {"message": f"VM Start Queued"}
else:
return {"message": "No such VM found"}
else:
return {"message": "Invalid Credentials"}, 400
class SuspendVM(Resource):
def post(self):
args = startvm_argparser.parse_args()
name, realm, token, vm_uuid = args.name, args.realm, args.token, args.vmid
if check_otp(name, realm, token) == 200:
vm = client.get(f"/v1/vm/{vm_uuid}", value_in_json=True)
if vm.value["owner"] != name:
return {"message": "Invalid User"}
if vm:
vm.value["status"] = "REQUESTED_SUSPEND"
client.put(vm.key, json.dumps(vm.value))
return {"message": f"VM Suspension Queued"}
else:
return {"message": "No such VM found"}
else:
return {"message": "Invalid Credentials"}, 400
class ResumeVM(Resource):
def post(self):
args = startvm_argparser.parse_args()
name, realm, token, vm_uuid = args.name, args.realm, args.token, args.vmid
if check_otp(name, realm, token) == 200:
vm = client.get(f"/v1/vm/{vm_uuid}", value_in_json=True)
if vm.value["owner"] != name:
return {"message": "Invalid User"}
if vm:
vm.value["status"] = "REQUESTED_RESUME"
client.put(vm.key, json.dumps(vm.value))
return {"message": f"VM Resume Queued"}
else:
return {"message": "No such VM found"}
else:
return {"message": "Invalid Credentials"}, 400
class ShutdownVM(Resource):
def post(self):
args = startvm_argparser.parse_args()
name, realm, token, vm_uuid = args.name, args.realm, args.token, args.vmid
if check_otp(name, realm, token) == 200:
vm = client.get(f"/v1/vm/{vm_uuid}", value_in_json=True)
if vm.value["owner"] != name:
return {"message": "Invalid User"}
if vm:
vm.value["status"] = "REQUESTED_SHUTDOWN"
client.put(vm.key, json.dumps(vm.value))
return {"message": f"VM Shutdown Queued"}
else:
return {"message": "No such VM found"}
else:
return {"message": "Invalid Credentials"}, 400
class ListUserVM(Resource):
def get(self):
args = uservm_argparser.parse_args()
name, realm, token = args.name, args.realm, args.token
if check_otp(name, realm, token) == 200:
vms = client.get_prefix(f"/v1/vm/", value_in_json=True)
if vms:
return_vms = []
user_vms = list(filter(lambda v: v.value["owner"] == name, vms))
for vm in user_vms:
return_vms.append(
{
"vm_uuid": vm.key.split("/")[-1],
"specs": vm.value["specs"],
"status": vm.value["status"],
}
)
return {"message": return_vms}, 200
else:
return {"message": "No VM found"}, 404
else:
return {"message": "Invalid Credentials"}, 400
class ListUserFiles(Resource):
def get(self):
args = uservm_argparser.parse_args()
name, realm, token = args.name, args.realm, args.token
if check_otp(name, realm, token) == 200:
files = client.get_prefix(f"/v1/files/", value_in_json=True)
if files:
return_files = []
user_files = list(filter(lambda f: f.value["owner"] == name, files))
for file in user_files:
return_files.append(
{
"filename": file.value["filename"],
"uuid": file.key.split("/")[-1],
}
)
return {"message": return_files}, 200
else:
return {"message": "No File found"}, 404
else:
return {"message": "Invalid Credentials"}, 400
class CreateHost(Resource):
def post(self):
args = addhost_argparser.parse_args()
name, realm, token, specs, hostname = (
args.name,
args.realm,
args.token,
args.specs,
args.hostname,
)
if realm == "ungleich-admin" and check_otp(name, realm, token) == 200:
# User is good
if not specs_parser.transform_specs(specs):
return (
{
"message": f"""Invalid unit - Please use following units {specs_parser.get_allowed_units()}"""
},
400,
)
print(specs)
host_key = f"/v1/host/{uuid4().hex}"
host_entry = {
"specs": specs,
"hostname": hostname,
"status": "DEAD",
"last_heart_beat": "",
}
client.put(host_key, host_entry, value_in_json=True)
return {"message": "Host Created"}, 200
else:
return {"message": "Invalid Credentials/Insufficient Permission"}, 400
api.add_resource(CreateVM, "/vm/create")
api.add_resource(DeleteVM, "/vm/delete")
api.add_resource(VmStatus, "/vm/status")
api.add_resource(StartVM, "/vm/start")
api.add_resource(SuspendVM, "/vm/suspend")
api.add_resource(ResumeVM, "/vm/resume")
api.add_resource(ShutdownVM, "/vm/shutdown")
api.add_resource(CreateImage, "/image/create")
api.add_resource(ListPublicImages, "/image/list-public")
api.add_resource(ListUserVM, "/user/vms")
api.add_resource(ListUserFiles, "/user/files")
api.add_resource(CreateHost, "/host/create")
if __name__ == "__main__":
app.run(host="::", debug=True)