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implemented add host, authenticate user before performing action of vm

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This commit is contained in:
ahmadbilalkhalid 2019-07-18 17:10:17 +05:00
parent 68f9bebccb
commit c474282b33
4 changed files with 123 additions and 39 deletions
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1
Pipfile
View file

@ -14,6 +14,7 @@ flask-restful = "*"
etcd3 = "*"
gunicorn = "*"
bitmath = "*"
pylint = "*"
[requires]
python_version = "3.7"

14
helper.py
View file

@ -8,22 +8,22 @@ from pyotp import TOTP
def check_otp(name, realm, token):
try:
data = {
"auth_name": config('AUTH_NAME', ''),
"auth_token": TOTP(config('AUTH_SEED', '')).now(),
"auth_realm": config('AUTH_REALM', ''),
"auth_name": config("AUTH_NAME", ""),
"auth_token": TOTP(config("AUTH_SEED", "")).now(),
"auth_realm": config("AUTH_REALM", ""),
"name": name,
"realm": realm,
"token": token
"token": token,
}
except binascii.Error:
return 400
response = requests.post(
"{OTP_SERVER}{OTP_VERIFY_ENDPOINT}".format(
OTP_SERVER=config('OTP_SERVER', ''),
OTP_VERIFY_ENDPOINT=config('OTP_VERIFY_ENDPOINT', 'verify/')
OTP_SERVER=config("OTP_SERVER", ""),
OTP_VERIFY_ENDPOINT=config("OTP_VERIFY_ENDPOINT", "verify/"),
),
data=data
data=data,
)
return response.status_code

144
main.py
View file

@ -1,6 +1,7 @@
# TODO
# convert etcd3 usage to etcd3_wrapper
import etcd3
# 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
@ -10,11 +11,11 @@ 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)
etcd_client = etcd3.client(host=config("ETCD_HOST"), port=int(config("ETCD_PORT")))
client = Etcd3Wrapper()
# CreateVM argparser
@ -48,6 +49,12 @@ 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/")
@ -57,25 +64,36 @@ def is_image_valid(image_uuid):
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
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
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}
vm_entry = {
"owner": name,
"specs": specs,
"hostname": "",
"status": "REQUESTED_NEW",
"image_uuid": image_uuid,
}
etcd_client.put(vm_key, json.dumps(vm_entry))
client.put(vm_key, vm_entry, value_in_json=True)
return {"message": "VM Creation Queued"}, 200
else:
@ -87,18 +105,23 @@ class CreateVM(Resource):
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
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 = etcd_client.get(f"/v1/vm/{vmid}")[0]
vmentry_etcd = client.get(f"/v1/vm/{vmid}").value
if vmentry_etcd:
vmentry_etcd = json.loads(vmentry_etcd)
vmentry_etcd["status"] = "REQUESTED_DELETE"
etcd_client.put(f"/v1/vm/{vmid}", json.dumps(vmentry_etcd))
client.put(f"/v1/vm/{vmid}", vmentry_etcd,
value_in_json=True)
return {"message": "VM Deletion Queued"}, 200
else:
@ -110,7 +133,7 @@ class DeleteVM(Resource):
class VmStatus(Resource):
def get(self):
args = vmstatus_argparser.parse_args()
r = etcd_client.get(f"/v1/vm/{args.vmid}")[0]
r = client.get(f"/v1/vm/{args.vmid}").value
print(r)
if r:
r = dict(json.loads(r.decode("utf-8")))
@ -127,13 +150,18 @@ class CreateImage(Resource):
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
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))
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
@ -144,7 +172,7 @@ class CreateImage(Resource):
"filename": file_entry_value["filename"],
"name": args.name,
"store_name": image_store_name,
"visibility": "public"
"visibility": "public",
}
client.put(f"/v1/image/{image_file_uuid}", json.dumps(image_entry_json))
@ -168,6 +196,8 @@ class StartVM(Resource):
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))
@ -185,6 +215,8 @@ class SuspendVM(Resource):
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))
@ -202,6 +234,8 @@ class ResumeVM(Resource):
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))
@ -219,6 +253,9 @@ class ShutdownVM(Resource):
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))
@ -240,11 +277,13 @@ class ListUserVM(Resource):
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_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
@ -263,15 +302,55 @@ class ListUserFiles(Resource):
return_files = []
user_files = list(filter(lambda f: f.value["owner"] == name, files))
for file in user_files:
return_files.append({
"filename": vm.value["filename"]
})
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")
@ -287,5 +366,8 @@ 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)

3
specs_parser.py
View file

@ -1,7 +1,8 @@
import bitmath
class SpecsParser(object):
def __init__(self, exceptional_devices, allowed_unit = 10):
def __init__(self, exceptional_devices, allowed_unit=10):
self.exceptional_devices = exceptional_devices
self.allowed_unit = allowed_unit