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New Features + Refactoring

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1. User can now use image name instead of image uuid when creation vm.
   For Example, now user can create an alpine vm using the following
   command
   ```shell
   ucloud-cli vm create --vm-name myvm --cpu 2 --ram '2GB' \
       --os-ssd '10GB' --image images:alpine
   ```
2. Instead of directly running code, code is now placed under a function
   main and is called using the following code
   ```python
   if __name__ == "__main__":
       main()
   ```
3. Multiprocess (Process) is used instead of threading (Thread) to update
   heart beat of host.
4. IP Address of vm is included in vm's status which is retrieved by the
   following command
   ```shell
   ucloud-cli vm status --vm-name myvm
   ```
This commit is contained in:
ahmadbilalkhalid 2019-11-02 20:42:24 +05:00
parent da77ac65eb
commit 93dee1c9fc
13 changed files with 354 additions and 233 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
.gitignore vendored
View file

@ -2,4 +2,6 @@
.vscode
.env
__pycache__
*/log.txt

60
Pipfile.lock generated
View file

@ -83,10 +83,12 @@
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@ -293,7 +295,6 @@
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],
"version": "==2.19"
@ -375,15 +376,15 @@
},
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},
"ucloud-common": {
"editable": true,
"git": "https://code.ungleich.ch/ucloud/ucloud_common.git",
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@ -509,26 +510,29 @@
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@ -743,11 +747,11 @@
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],
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"version": "==3.7.4.1"
},
"urllib3": {
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3
TODO.md
View file

@ -2,5 +2,4 @@
- Check for `etcd3.exceptions.ConnectionFailedError` when calling some etcd operation to
avoid crashing whole application
- Throw KeyError instead of returning None when some key is not found in etcd
- Specify image format when using qemu-img when creating virtual machine
- Throw KeyError instead of returning None when some key is not found in etcd

76
api/helper.py
View file

@ -1,9 +1,12 @@
import binascii
import requests
import random
import subprocess as sp
import ipaddress
from decouple import config
from pyotp import TOTP
from config import VM_POOL
from config import VM_POOL, etcd_client, IMAGE_PREFIX
def check_otp(name, realm, token):
@ -47,7 +50,47 @@ def resolve_vm_name(name, owner):
return None
import random
def resolve_image_name(name, etcd_client):
"""Return image uuid given its name and its store
* If the provided name is not in correct format
i.e {store_name}:{image_name} return ValueError
* If no such image found then return KeyError
"""
seperator = ":"
# Ensure, user/program passed valid name that is of type string
try:
store_name_and_image_name = name.split(seperator)
"""
Examples, where it would work and where it would raise exception
"images:alpine" --> ["images", "alpine"]
"images" --> ["images"] it would raise Exception as non enough value to unpack
"images:alpine:meow" --> ["images", "alpine", "meow"] it would raise Exception
as too many values to unpack
"""
store_name, image_name = store_name_and_image_name
except Exception:
raise ValueError("Image name not in correct format i.e {store_name}:{image_name}")
images = etcd_client.get_prefix(IMAGE_PREFIX, value_in_json=True)
# Try to find image with name == image_name and store_name == store_name
try:
image = next(filter(lambda im: im.value['name'] == image_name \
and im.value['store_name'] == store_name, images))
except StopIteration:
raise KeyError("No image with name {} found.".format(name))
else:
image_uuid = image.key.split('/')[-1]
return image_uuid
def random_bytes(num=6):
return [random.randrange(256) for _ in range(num)]
@ -68,3 +111,32 @@ def generate_mac(uaa=False, multicast=False, oui=None, separator=':', byte_fmt='
else:
mac[0] |= 1 << 1 # set bit 1
return separator.join(byte_fmt % b for b in mac)
def get_ip_addr(mac_address, device):
"""Return IP address of a device provided its mac address / link local address
and the device with which it is connected.
For Example, if we call get_ip_addr(mac_address="52:54:00:12:34:56", device="br0")
the following two scenarios can happen
1. It would return None if we can't be able to find device whose mac_address is equal
to the arg:mac_address or the mentioned arg:device does not exists or the ip address
we found is local.
2. It would return ip_address of device whose mac_address is equal to arg:mac_address
and is connected/neighbor of arg:device
"""
try:
output = sp.check_output(['ip','-6','neigh', 'show', 'dev', device], stderr=sp.PIPE)
except sp.CalledProcessError:
return None
else:
result = []
output = output.strip().decode("utf-8")
output = output.split("\n")
for entry in output:
entry = entry.split()
if entry:
ip = ipaddress.ip_address(entry[0])
mac = entry[2]
if ip.is_global and mac_address == mac:
result.append(ip)
return result

56
api/main.py
View file

@ -1,6 +1,9 @@
import json
import subprocess
import os
import schemas
from uuid import uuid4
from flask import Flask, request
@ -9,7 +12,7 @@ from flask_restful import Resource, Api
from ucloud_common.vm import VMStatus
from ucloud_common.request import RequestEntry, RequestType
from helper import generate_mac
from helper import generate_mac, get_ip_addr
from config import (
etcd_client,
@ -23,18 +26,6 @@ from config import (
VM_POOL,
HOST_POOL,
)
from schemas import (
CreateVMSchema,
VMStatusSchema,
CreateImageSchema,
VmActionSchema,
OTPSchema,
CreateHostSchema,
VmMigrationSchema,
AddSSHSchema,
RemoveSSHSchema,
GetSSHSchema
)
app = Flask(__name__)
api = Api(app)
@ -45,7 +36,7 @@ class CreateVM(Resource):
def post():
data = request.json
print(data)
validator = CreateVMSchema(data)
validator = schemas.CreateVMSchema(data)
if validator.is_valid():
vm_uuid = uuid4().hex
vm_key = os.path.join(VM_PREFIX, vm_uuid)
@ -63,7 +54,7 @@ class CreateVM(Resource):
"specs": specs,
"hostname": "",
"status": "",
"image_uuid": data["image_uuid"],
"image_uuid": validator.image_uuid,
"log": [],
"vnc_socket": "",
"mac": str(generate_mac()),
@ -85,10 +76,14 @@ class VmStatus(Resource):
@staticmethod
def get():
data = request.json
validator = VMStatusSchema(data)
validator = schemas.VMStatusSchema(data)
if validator.is_valid():
vm = VM_POOL.get(os.path.join(VM_PREFIX, data["uuid"]))
return json.dumps(str(vm))
vm_value = vm.value.copy()
vm_value["ip"] = list(map(str, get_ip_addr(vm.mac, "br0")))
vm.value = vm_value
print(vm.value)
return vm.value
else:
return validator.get_errors(), 400
@ -97,7 +92,7 @@ class CreateImage(Resource):
@staticmethod
def post():
data = request.json
validator = CreateImageSchema(data)
validator = schemas.CreateImageSchema(data)
if validator.is_valid():
file_entry = etcd_client.get(os.path.join(FILE_PREFIX, data["uuid"]))
file_entry_value = json.loads(file_entry.value)
@ -121,10 +116,15 @@ class CreateImage(Resource):
class ListPublicImages(Resource):
@staticmethod
def get():
images = etcd_client.get_prefix(IMAGE_PREFIX)
images = etcd_client.get_prefix(IMAGE_PREFIX, value_in_json=True)
r = {}
r["images"] = []
for image in images:
r[image.key.split("/")[-1]] = json.loads(image.value)
image_key = "{}:{}".format(image.value["store_name"], image.value["name"])
r["images"].append({
"name":image_key,
"status": image.value["status"]
})
return r, 200
@ -132,7 +132,7 @@ class VMAction(Resource):
@staticmethod
def post():
data = request.json
validator = VmActionSchema(data)
validator = schemas.VmActionSchema(data)
if validator.is_valid():
vm_entry = VM_POOL.get(os.path.join(VM_PREFIX, data["uuid"]))
@ -182,7 +182,7 @@ class VMMigration(Resource):
@staticmethod
def post():
data = request.json
validator = VmMigrationSchema(data)
validator = schemas.VmMigrationSchema(data)
if validator.is_valid():
vm = VM_POOL.get(data["uuid"])
@ -203,7 +203,7 @@ class ListUserVM(Resource):
@staticmethod
def get():
data = request.json
validator = OTPSchema(data)
validator = schemas.OTPSchema(data)
if validator.is_valid():
vms = etcd_client.get_prefix(VM_PREFIX, value_in_json=True)
@ -235,7 +235,7 @@ class ListUserFiles(Resource):
@staticmethod
def get():
data = request.json
validator = OTPSchema(data)
validator = schemas.OTPSchema(data)
if validator.is_valid():
files = etcd_client.get_prefix(FILE_PREFIX, value_in_json=True)
@ -257,7 +257,7 @@ class CreateHost(Resource):
@staticmethod
def post():
data = request.json
validator = CreateHostSchema(data)
validator = schemas.CreateHostSchema(data)
if validator.is_valid():
host_key = os.path.join(HOST_PREFIX, uuid4().hex)
host_entry = {
@ -292,7 +292,7 @@ class GetSSHKeys(Resource):
@staticmethod
def get():
data = request.json
validator = GetSSHSchema(data)
validator = schemas.GetSSHSchema(data)
if validator.is_valid():
if not validator.key_name.value:
@ -321,7 +321,7 @@ class AddSSHKey(Resource):
@staticmethod
def post():
data = request.json
validator = AddSSHSchema(data)
validator = schemas.AddSSHSchema(data)
if validator.is_valid():
# {user_prefix}/{realm}/{name}/key/{key_name}
@ -342,7 +342,7 @@ class RemoveSSHKey(Resource):
@staticmethod
def get():
data = request.json
validator = RemoveSSHSchema(data)
validator = schemas.RemoveSSHSchema(data)
if validator.is_valid():
# {user_prefix}/{realm}/{name}/key/{key_name}

20
api/schemas.py
View file

@ -18,6 +18,8 @@ import json
import os
import bitmath
import helper
from ucloud_common.host import HostPool, HostStatus
from ucloud_common.vm import VmPool, VMStatus
@ -207,22 +209,24 @@ class CreateVMSchema(OTPSchema):
# Fields
self.specs = Field("specs", dict, data.get("specs", KeyError))
self.vm_name = Field("vm_name", str, data.get("vm_name", KeyError))
self.image_uuid = Field("image_uuid", str, data.get("image_uuid", KeyError))
self.image = Field("image", str, data.get("image", KeyError))
# Validation
self.image_uuid.validation = self.image_uuid_validation
self.image.validation = self.image_validation
self.vm_name.validation = self.vm_name_validation
self.specs.validation = self.specs_validation
fields = [self.vm_name, self.image_uuid, self.specs]
fields = [self.vm_name, self.image, self.specs]
super().__init__(data=data, fields=fields)
def image_uuid_validation(self):
images = client.get_prefix(IMAGE_PREFIX)
if self.image_uuid.value not in [i.key.split("/")[-1] for i in images]:
self.add_error("Image UUID not valid")
def image_validation(self):
try:
image_uuid = helper.resolve_image_name(self.image.value, client)
except Exception as e:
self.add_error(str(e))
else:
self.image_uuid = image_uuid
def vm_name_validation(self):
if resolve_vm_name(name=self.vm_name.value, owner=self.name.value):

125
filescanner/main.py
View file

@ -12,6 +12,7 @@ from uuid import uuid4
def getxattr(file, attr):
"""Get specified user extended attribute (arg:attr) of a file (arg:file)"""
try:
attr = "user." + attr
value = sp.check_output(['getfattr', file,
@ -24,25 +25,39 @@ def getxattr(file, attr):
return value
def setxattr(file, attr, value):
"""Set specified user extended attribute (arg:attr) equal to (arg:value)
of a file (arg:file)"""
attr = "user." + attr
sp.check_output(['setfattr', file,
'--name', attr,
'--value', str(value)])
def sha512sum(filename):
_sum = hashlib.sha512()
buffer_size = 2**16
with open(filename, "rb") as f:
while True:
data = f.read(buffer_size)
if not data:
break
_sum.update(data)
return _sum.hexdigest()
def sha512sum(file: str):
"""Use sha512sum utility to compute sha512 sum of arg:file
IF arg:file does not exists:
raise FileNotFoundError exception
ELSE IF sum successfully computer:
return computed sha512 sum
ELSE:
return None
"""
if not isinstance(file, str): raise TypeError
try:
output = sp.check_output(["sha512sum", file], stderr=sp.PIPE)
except sp.CalledProcessError as e:
error = e.stderr.decode("utf-8")
if "No such file or directory" in error:
raise FileNotFoundError from None
else:
output = output.decode("utf-8").strip()
output = output.split(" ")
return output[0]
return None
try:
@ -53,57 +68,61 @@ except Exception as e:
print('Make sure you have getfattr and setfattr available')
exit(1)
def main():
BASE_DIR = config("BASE_DIR")
BASE_DIR = config("BASE_DIR")
FILE_PREFIX = config("FILE_PREFIX")
FILE_PREFIX = config("FILE_PREFIX")
etcd_client = Etcd3Wrapper(host=config("ETCD_URL"))
etcd_client = Etcd3Wrapper(host=config("ETCD_URL"))
# Recursively Get All Files and Folder below BASE_DIR
files = glob.glob("{}/**".format(BASE_DIR), recursive=True)
# Recursively Get All Files and Folder below BASE_DIR
files = glob.glob("{}/**".format(BASE_DIR), recursive=True)
# Retain only Files
files = list(filter(os.path.isfile, files))
# Retain only Files
files = list(filter(os.path.isfile, files))
untracked_files = list(
filter(lambda f: not bool(getxattr(f, "user.utracked")), files)
)
untracked_files = list(
filter(lambda f: not bool(getxattr(f, "user.utracked")), files)
)
tracked_files = list(
filter(lambda f: f not in untracked_files, files)
)
for file in untracked_files:
file_id = uuid4()
tracked_files = list(
filter(lambda f: f not in untracked_files, files)
)
for file in untracked_files:
file_id = uuid4()
# Get Username
owner = pathlib.Path(file).parts[3]
# Get Creation Date of File
# Here, we are assuming that ctime is creation time
# which is mostly not true.
creation_date = time.ctime(os.stat(file).st_ctime)
# Get Username
owner = pathlib.Path(file).parts[3]
# Get Creation Date of File
# Here, we are assuming that ctime is creation time
# which is mostly not true.
creation_date = time.ctime(os.stat(file).st_ctime)
# Get File Size
size = os.path.getsize(file)
# Get File Size
size = os.path.getsize(file)
# Compute sha512 sum
sha_sum = sha512sum(file)
# Compute sha512 sum
sha_sum = sha512sum(file)
# File Path excluding base and username
file_path = pathlib.Path(file).parts[4:]
file_path = os.path.join(*file_path)
# File Path excluding base and username
file_path = pathlib.Path(file).parts[4:]
file_path = os.path.join(*file_path)
# Create Entry
entry_key = os.path.join(FILE_PREFIX, str(file_id))
entry_value = {
"filename": file_path,
"owner": owner,
"sha512sum": sha_sum,
"creation_date": creation_date,
"size": size
}
# Create Entry
entry_key = os.path.join(FILE_PREFIX, str(file_id))
entry_value = {
"filename": file_path,
"owner": owner,
"sha512sum": sha_sum,
"creation_date": creation_date,
"size": size
}
print("Tracking {}".format(file))
# Insert Entry
etcd_client.put(entry_key, entry_value, value_in_json=True)
setxattr(file, "user.utracked", True)
print("Tracking {}".format(file))
# Insert Entry
etcd_client.put(entry_key, entry_value, value_in_json=True)
setxattr(file, "user.utracked", True)
if __name__ == "__main__":
main()

5
host/config.py
View file

@ -16,7 +16,10 @@ logging.basicConfig(
datefmt="%d-%b-%y %H:%M:%S",
)
etcd_client = Etcd3Wrapper(host=config("ETCD_URL"))
etcd_wrapper_args = ()
etcd_wrapper_kwargs = {"host": config("ETCD_URL")}
etcd_client = Etcd3Wrapper(*etcd_wrapper_args, **etcd_wrapper_kwargs)
HOST_PREFIX = config("HOST_PREFIX")
VM_PREFIX = config("VM_PREFIX")

55
host/main.py
View file

@ -1,27 +1,32 @@
import argparse
import threading
# import threading
import time
import os
import sys
import virtualmachine
import multiprocessing as mp
from ucloud_common.host import HostEntry
from ucloud_common.request import RequestEntry, RequestType
from config import (vm_pool, host_pool, request_pool,
etcd_client, logging, running_vms,
REQUEST_PREFIX, WITHOUT_CEPH)
etcd_wrapper_args, etcd_wrapper_kwargs,
REQUEST_PREFIX, HOST_PREFIX,
WITHOUT_CEPH, VM_DIR, HostPool)
from etcd3_wrapper import Etcd3Wrapper
import etcd3
def update_heartbeat(host):
client = Etcd3Wrapper(*etcd_wrapper_args, **etcd_wrapper_kwargs)
host_pool = HostPool(client, HOST_PREFIX)
this_host = host_pool.get(host)
def update_heartbeat(host: HostEntry):
while True:
host.update_heartbeat()
host_pool.put(host)
this_host.update_heartbeat()
host_pool.put(this_host)
time.sleep(10)
logging.info("Updated last heartbeat time %s", host.last_heartbeat)
def maintenance(host):
# To capture vm running according to running_vms list
@ -66,16 +71,25 @@ def main():
argparser.add_argument("hostname", help="Name of this host. e.g /v1/host/1")
args = argparser.parse_args()
assert WITHOUT_CEPH and os.path.isdir(VM_DIR), (
"You have set WITHOUT_CEPH to True. So, the vm directory mentioned"
" in .env file must exists. But, it don't." )
mp.set_start_method('spawn')
heartbeat_updating_process = mp.Process(target=update_heartbeat, args=(args.hostname,))
host_pool = HostPool(etcd_client, HOST_PREFIX)
host = host_pool.get(args.hostname)
if not host:
print("No Such Host")
exit(1)
if WITHOUT_CEPH and not os.path.isdir("/var/vm"):
print("You have set WITHOUT_CEPH to True. So, the /var/vm must exists. But, it don't")
sys.exit(1)
assert host, "No such host"
try:
heartbeat_updating_process.start()
except Exception as e:
logging.info("No Need To Go Further. Our heartbeat updating mechanism is not working")
logging.exception(e)
exit(-1)
logging.info("%s Session Started %s", '*' * 5, '*' * 5)
# It is seen that under heavy load, timeout event doesn't come
@ -86,13 +100,6 @@ def main():
# update the heart beat in a predictive manner we start Heart
# beat updating mechanism in separated thread
heartbeat_updating_thread = threading.Thread(target=update_heartbeat, args=(host,))
try:
heartbeat_updating_thread.start()
except Exception as e:
logging.info("No Need To Go Further. Our heartbeat updating mechanism is not working")
logging.exception(e)
exit(-1)
for events_iterator in [
etcd_client.get_prefix(REQUEST_PREFIX, value_in_json=True),
@ -134,4 +141,6 @@ def main():
logging.info("Running VMs %s", running_vms)
main()
if __name__ == "__main__":
main()

172
imagescanner/main.py
View file

@ -19,90 +19,96 @@ def qemu_img_type(path):
qemu_img_info = json.loads(qemu_img_info.decode("utf-8"))
return qemu_img_info["format"]
# If you are using WITHOUT_CEPH FLAG in .env
# then please make sure that IMAGE_DIR directory
# exists otherwise this script would fail
if WITHOUT_CEPH and not os.path.isdir(IMAGE_DIR):
print("You have set WITHOUT_CEPH to True. So,"
"the {} must exists. But, it don't".format(IMAGE_DIR))
sys.exit(1)
try:
subprocess.check_output(['which', 'qemu-img'])
except Exception:
print("qemu-img missing")
sys.exit(1)
# We want to get images entries that requests images to be created
images = client.get_prefix(IMAGE_PREFIX, value_in_json=True)
images_to_be_created = list(filter(lambda im: im.value['status'] == 'TO_BE_CREATED', images))
for image in images_to_be_created:
try:
image_uuid = image.key.split('/')[-1]
image_owner = image.value['owner']
image_filename = image.value['filename']
image_store_name = image.value['store_name']
image_full_path = os.path.join(BASE_PATH, image_owner, image_filename)
image_stores = client.get_prefix(IMAGE_STORE_PREFIX, value_in_json=True)
user_image_store = next(filter(
lambda s, store_name=image_store_name: s.value["name"] == store_name,
image_stores
))
image_store_pool = user_image_store.value['attributes']['pool']
except Exception as e:
logging.exception(e)
else:
# At least our basic data is available
qemu_img_convert_command = ["qemu-img", "convert", "-f", "qcow2",
"-O", "raw", image_full_path, "image.raw"]
if WITHOUT_CEPH:
image_import_command = ["mv", "image.raw", os.path.join(IMAGE_DIR, image_uuid)]
snapshot_creation_command = ["true"]
snapshot_protect_command = ["true"]
else:
image_import_command = ["rbd", "import", "image.raw",
"{}/{}".format(image_store_pool, image_uuid)]
snapshot_creation_command = ["rbd", "snap", "create",
"{}/{}@protected".format(image_store_pool, image_uuid)]
snapshot_protect_command = ["rbd", "snap", "protect",
"{}/{}@protected".format(image_store_pool, image_uuid)]
# First check whether the image is qcow2
if qemu_img_type(image_full_path) == "qcow2":
try:
# Convert .qcow2 to .raw
subprocess.check_output(qemu_img_convert_command)
# Import image either to ceph/filesystem
subprocess.check_output(image_import_command)
# Create and Protect Snapshot
subprocess.check_output(snapshot_creation_command)
subprocess.check_output(snapshot_protect_command)
except Exception as e:
logging.exception(e)
else:
# Everything is successfully done
image.value["status"] = "CREATED"
client.put(image.key, json.dumps(image.value))
else:
# The user provided image is either not found or of invalid format
image.value["status"] = "INVALID_IMAGE"
client.put(image.key, json.dumps(image.value))
def main():
# If you are using WITHOUT_CEPH FLAG in .env
# then please make sure that IMAGE_DIR directory
# exists otherwise this script would fail
if WITHOUT_CEPH and not os.path.isdir(IMAGE_DIR):
print("You have set WITHOUT_CEPH to True. So,"
"the {} must exists. But, it don't".format(IMAGE_DIR))
sys.exit(1)
try:
os.remove("image.raw")
subprocess.check_output(['which', 'qemu-img'])
except Exception:
pass
print("qemu-img missing")
sys.exit(1)
# We want to get images entries that requests images to be created
images = client.get_prefix(IMAGE_PREFIX, value_in_json=True)
images_to_be_created = list(filter(lambda im: im.value['status'] == 'TO_BE_CREATED', images))
for image in images_to_be_created:
try:
image_uuid = image.key.split('/')[-1]
image_owner = image.value['owner']
image_filename = image.value['filename']
image_store_name = image.value['store_name']
image_full_path = os.path.join(BASE_PATH, image_owner, image_filename)
image_stores = client.get_prefix(IMAGE_STORE_PREFIX, value_in_json=True)
user_image_store = next(filter(
lambda s, store_name=image_store_name: s.value["name"] == store_name,
image_stores
))
image_store_pool = user_image_store.value['attributes']['pool']
except Exception as e:
logging.exception(e)
else:
# At least our basic data is available
qemu_img_convert_command = ["qemu-img", "convert", "-f", "qcow2",
"-O", "raw", image_full_path, "image.raw"]
if WITHOUT_CEPH:
image_import_command = ["mv", "image.raw", os.path.join(IMAGE_DIR, image_uuid)]
snapshot_creation_command = ["true"]
snapshot_protect_command = ["true"]
else:
image_import_command = ["rbd", "import", "image.raw",
"{}/{}".format(image_store_pool, image_uuid)]
snapshot_creation_command = ["rbd", "snap", "create",
"{}/{}@protected".format(image_store_pool, image_uuid)]
snapshot_protect_command = ["rbd", "snap", "protect",
"{}/{}@protected".format(image_store_pool, image_uuid)]
# First check whether the image is qcow2
if qemu_img_type(image_full_path) == "qcow2":
try:
# Convert .qcow2 to .raw
subprocess.check_output(qemu_img_convert_command)
# Import image either to ceph/filesystem
subprocess.check_output(image_import_command)
# Create and Protect Snapshot
subprocess.check_output(snapshot_creation_command)
subprocess.check_output(snapshot_protect_command)
except Exception as e:
logging.exception(e)
else:
# Everything is successfully done
image.value["status"] = "CREATED"
client.put(image.key, json.dumps(image.value))
else:
# The user provided image is either not found or of invalid format
image.value["status"] = "INVALID_IMAGE"
client.put(image.key, json.dumps(image.value))
try:
os.remove("image.raw")
except Exception:
pass
if __name__ == "__main__":
main()

1
metadata/config.py
View file

@ -15,6 +15,7 @@ logging.basicConfig(
VM_PREFIX = config("VM_PREFIX")
USER_PREFIX = config("USER_PREFIX")
etcd_client = Etcd3Wrapper(host=config("ETCD_URL"))

5
metadata/main.py
View file

@ -1,6 +1,8 @@
import os
from flask import Flask, request
from flask_restful import Resource, Api
from config import etcd_client, VM_POOL
from config import etcd_client, VM_POOL, USER_PREFIX
app = Flask(__name__)
api = Api(app)
@ -29,7 +31,6 @@ def ipv62mac(ipv6):
mac_parts[0] = '%02x' % (int(mac_parts[0], 16) ^ 2)
del mac_parts[4]
del mac_parts[3]
return ':'.join(mac_parts)

7
scheduler/main.py
View file

@ -14,8 +14,9 @@ from helper import (get_suitable_host, dead_host_mitigation, dead_host_detection
assign_host, NoSuitableHostFound)
def main():
logging.info("%s SESSION STARTED %s", '*' * 5, '*' * 5)
pending_vms = []
for request_iterator in [
@ -85,5 +86,5 @@ def main():
logging.info("No Resource Left. Emailing admin....")
logging.info("%s SESSION STARTED %s", '*' * 5, '*' * 5)
main()
if __name__ == "__main__":
main()