forked from uncloud/uncloud
560 lines
17 KiB
Python
Executable file
560 lines
17 KiB
Python
Executable file
"""
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This module contain classes thats validates and intercept/modify
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data coming from uncloud-cli (user)
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It was primarily developed as an alternative to argument parser
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of Flask_Restful which is going to be deprecated. I also tried
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marshmallow for that purpose but it was an overkill (because it
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do validation + serialization + deserialization) and little
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inflexible for our purpose.
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"""
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# TODO: Fix error message when user's mentioned VM (referred by name)
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# does not exists.
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#
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# Currently, it says uuid is a required field.
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import json
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import os
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import bitmath
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from uncloud.common.host import HostStatus
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from uncloud.common.vm import VMStatus
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from uncloud.shared import shared
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from uncloud.settings import settings
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from . import helper, logger
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from .common_fields import Field, VmUUIDField
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from .helper import check_otp, resolve_vm_name
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class BaseSchema:
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def __init__(self, data, fields=None):
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_ = data # suppress linter warning
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self.__errors = []
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if fields is None:
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self.fields = []
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else:
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self.fields = fields
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def validation(self):
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# custom validation is optional
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return True
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def is_valid(self):
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for field in self.fields:
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field.is_valid()
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self.add_field_errors(field)
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for parent in self.__class__.__bases__:
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try:
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parent.validation(self)
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except AttributeError:
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pass
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if not self.__errors:
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self.validation()
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if self.__errors:
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return False
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return True
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def get_errors(self):
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return {"message": self.__errors}
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def add_field_errors(self, field: Field):
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self.__errors += field.get_errors()
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def add_error(self, error):
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self.__errors.append(error)
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class OTPSchema(BaseSchema):
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def __init__(self, data: dict, fields=None):
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self.name = Field("name", str, data.get("name", KeyError))
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self.realm = Field("realm", str, data.get("realm", KeyError))
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self.token = Field("token", str, data.get("token", KeyError))
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_fields = [self.name, self.realm, self.token]
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if fields:
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_fields += fields
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super().__init__(data=data, fields=_fields)
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def validation(self):
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if (
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check_otp(
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self.name.value, self.realm.value, self.token.value
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)
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!= 200
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):
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self.add_error("Wrong Credentials")
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########################## Image Operations ###############################################
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class CreateImageSchema(BaseSchema):
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def __init__(self, data):
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# Fields
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self.uuid = Field("uuid", str, data.get("uuid", KeyError))
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self.name = Field("name", str, data.get("name", KeyError))
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self.image_store = Field(
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"image_store", str, data.get("image_store", KeyError)
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)
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# Validations
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self.uuid.validation = self.file_uuid_validation
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self.image_store.validation = self.image_store_name_validation
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# All Fields
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fields = [self.uuid, self.name, self.image_store]
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super().__init__(data, fields)
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def file_uuid_validation(self):
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file_entry = shared.etcd_client.get(
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os.path.join(
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settings["etcd"]["file_prefix"], self.uuid.value
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)
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)
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if file_entry is None:
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self.add_error(
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"Image File with uuid '{}' Not Found".format(
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self.uuid.value
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)
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)
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def image_store_name_validation(self):
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image_stores = list(
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shared.etcd_client.get_prefix(
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settings["etcd"]["image_store_prefix"]
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)
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)
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image_store = next(
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filter(
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lambda s: json.loads(s.value)["name"]
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== self.image_store.value,
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image_stores,
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),
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None,
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)
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if not image_store:
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self.add_error(
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"Store '{}' does not exists".format(
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self.image_store.value
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)
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)
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# Host Operations
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class CreateHostSchema(OTPSchema):
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def __init__(self, data):
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# Fields
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self.specs = Field("specs", dict, data.get("specs", KeyError))
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self.hostname = Field(
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"hostname", str, data.get("hostname", KeyError)
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)
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# Validation
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self.specs.validation = self.specs_validation
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fields = [self.hostname, self.specs]
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super().__init__(data=data, fields=fields)
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def specs_validation(self):
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ALLOWED_BASE = 10
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_cpu = self.specs.value.get("cpu", KeyError)
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_ram = self.specs.value.get("ram", KeyError)
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_os_ssd = self.specs.value.get("os-ssd", KeyError)
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_hdd = self.specs.value.get("hdd", KeyError)
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if KeyError in [_cpu, _ram, _os_ssd, _hdd]:
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self.add_error(
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"You must specify CPU, RAM and OS-SSD in your specs"
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)
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return None
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try:
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parsed_ram = bitmath.parse_string_unsafe(_ram)
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parsed_os_ssd = bitmath.parse_string_unsafe(_os_ssd)
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if parsed_ram.base != ALLOWED_BASE:
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self.add_error(
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"Your specified RAM is not in correct units"
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)
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if parsed_os_ssd.base != ALLOWED_BASE:
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self.add_error(
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"Your specified OS-SSD is not in correct units"
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)
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if _cpu < 1:
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self.add_error("CPU must be atleast 1")
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if parsed_ram < bitmath.GB(1):
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self.add_error("RAM must be atleast 1 GB")
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if parsed_os_ssd < bitmath.GB(10):
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self.add_error("OS-SSD must be atleast 10 GB")
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parsed_hdd = []
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for hdd in _hdd:
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_parsed_hdd = bitmath.parse_string_unsafe(hdd)
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if _parsed_hdd.base != ALLOWED_BASE:
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self.add_error(
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"Your specified HDD is not in correct units"
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)
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break
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else:
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parsed_hdd.append(str(_parsed_hdd))
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except ValueError:
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# TODO: Find some good error message
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self.add_error("Specs are not correct.")
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else:
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if self.get_errors():
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self.specs = {
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"cpu": _cpu,
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"ram": str(parsed_ram),
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"os-ssd": str(parsed_os_ssd),
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"hdd": parsed_hdd,
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}
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def validation(self):
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if self.realm.value != "ungleich-admin":
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self.add_error(
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"Invalid Credentials/Insufficient Permission"
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)
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# VM Operations
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class CreateVMSchema(OTPSchema):
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def __init__(self, data):
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# Fields
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self.specs = Field("specs", dict, data.get("specs", KeyError))
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self.vm_name = Field(
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"vm_name", str, data.get("vm_name", KeyError)
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)
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self.image = Field("image", str, data.get("image", KeyError))
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self.network = Field(
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"network", list, data.get("network", KeyError)
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)
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# Validation
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self.image.validation = self.image_validation
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self.vm_name.validation = self.vm_name_validation
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self.specs.validation = self.specs_validation
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self.network.validation = self.network_validation
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fields = [self.vm_name, self.image, self.specs, self.network]
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super().__init__(data=data, fields=fields)
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def image_validation(self):
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try:
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image_uuid = helper.resolve_image_name(
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self.image.value, shared.etcd_client
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)
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except Exception as e:
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logger.exception(
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"Cannot resolve image name = %s", self.image.value
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)
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self.add_error(str(e))
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else:
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self.image_uuid = image_uuid
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def vm_name_validation(self):
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if resolve_vm_name(
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name=self.vm_name.value, owner=self.name.value
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):
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self.add_error(
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'VM with same name "{}" already exists'.format(
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self.vm_name.value
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)
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)
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def network_validation(self):
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_network = self.network.value
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if _network:
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for net in _network:
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network = shared.etcd_client.get(
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os.path.join(
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settings["etcd"]["network_prefix"],
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self.name.value,
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net,
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),
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value_in_json=True,
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)
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if not network:
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self.add_error(
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"Network with name {} does not exists".format(
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net
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)
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)
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def specs_validation(self):
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ALLOWED_BASE = 10
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_cpu = self.specs.value.get("cpu", KeyError)
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_ram = self.specs.value.get("ram", KeyError)
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_os_ssd = self.specs.value.get("os-ssd", KeyError)
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_hdd = self.specs.value.get("hdd", KeyError)
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if KeyError in [_cpu, _ram, _os_ssd, _hdd]:
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self.add_error(
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"You must specify CPU, RAM and OS-SSD in your specs"
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)
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return None
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try:
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parsed_ram = bitmath.parse_string_unsafe(_ram)
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parsed_os_ssd = bitmath.parse_string_unsafe(_os_ssd)
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if parsed_ram.base != ALLOWED_BASE:
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self.add_error(
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"Your specified RAM is not in correct units"
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)
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if parsed_os_ssd.base != ALLOWED_BASE:
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self.add_error(
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"Your specified OS-SSD is not in correct units"
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)
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if int(_cpu) < 1:
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self.add_error("CPU must be atleast 1")
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if parsed_ram < bitmath.GB(1):
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self.add_error("RAM must be atleast 1 GB")
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if parsed_os_ssd < bitmath.GB(1):
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self.add_error("OS-SSD must be atleast 1 GB")
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parsed_hdd = []
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for hdd in _hdd:
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_parsed_hdd = bitmath.parse_string_unsafe(hdd)
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if _parsed_hdd.base != ALLOWED_BASE:
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self.add_error(
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"Your specified HDD is not in correct units"
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)
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break
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else:
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parsed_hdd.append(str(_parsed_hdd))
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except ValueError:
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# TODO: Find some good error message
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self.add_error("Specs are not correct.")
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else:
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if self.get_errors():
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self.specs = {
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"cpu": _cpu,
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"ram": str(parsed_ram),
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"os-ssd": str(parsed_os_ssd),
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"hdd": parsed_hdd,
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}
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class VMStatusSchema(OTPSchema):
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def __init__(self, data):
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data["uuid"] = (
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resolve_vm_name(
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name=data.get("vm_name", None),
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owner=(
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data.get("in_support_of", None)
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or data.get("name", None)
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),
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)
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or KeyError
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)
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self.uuid = VmUUIDField(data)
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fields = [self.uuid]
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super().__init__(data, fields)
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def validation(self):
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vm = shared.vm_pool.get(self.uuid.value)
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if not (
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vm.value["owner"] == self.name.value
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or self.realm.value == "ungleich-admin"
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):
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self.add_error("Invalid User")
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class VmActionSchema(OTPSchema):
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def __init__(self, data):
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data["uuid"] = (
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resolve_vm_name(
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name=data.get("vm_name", None),
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owner=(
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data.get("in_support_of", None)
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or data.get("name", None)
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),
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)
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or KeyError
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)
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self.uuid = VmUUIDField(data)
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self.action = Field("action", str, data.get("action", KeyError))
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self.action.validation = self.action_validation
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_fields = [self.uuid, self.action]
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super().__init__(data=data, fields=_fields)
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def action_validation(self):
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allowed_actions = ["start", "stop", "delete"]
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if self.action.value not in allowed_actions:
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self.add_error(
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"Invalid Action. Allowed Actions are {}".format(
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allowed_actions
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)
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)
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def validation(self):
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vm = shared.vm_pool.get(self.uuid.value)
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if not (
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vm.value["owner"] == self.name.value
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or self.realm.value == "ungleich-admin"
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):
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self.add_error("Invalid User")
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if (
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self.action.value == "start"
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and vm.status == VMStatus.running
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and vm.hostname != ""
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):
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self.add_error("VM Already Running")
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if self.action.value == "stop":
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if vm.status == VMStatus.stopped:
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self.add_error("VM Already Stopped")
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elif vm.status != VMStatus.running:
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self.add_error("Cannot stop non-running VM")
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class VmMigrationSchema(OTPSchema):
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def __init__(self, data):
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data["uuid"] = (
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resolve_vm_name(
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name=data.get("vm_name", None),
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owner=(
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data.get("in_support_of", None)
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or data.get("name", None)
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),
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)
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or KeyError
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)
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self.uuid = VmUUIDField(data)
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self.destination = Field(
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"destination", str, data.get("destination", KeyError)
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)
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self.destination.validation = self.destination_validation
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fields = [self.destination]
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super().__init__(data=data, fields=fields)
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def destination_validation(self):
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hostname = self.destination.value
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host = next(
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filter(
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lambda h: h.hostname == hostname, shared.host_pool.hosts
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),
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None,
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)
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if not host:
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self.add_error(
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"No Such Host ({}) exists".format(
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self.destination.value
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)
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)
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elif host.status != HostStatus.alive:
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self.add_error("Destination Host is dead")
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else:
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self.destination.value = host.key
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def validation(self):
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vm = shared.vm_pool.get(self.uuid.value)
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if not (
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vm.value["owner"] == self.name.value
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or self.realm.value == "ungleich-admin"
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):
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self.add_error("Invalid User")
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if vm.status != VMStatus.running:
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self.add_error("Can't migrate non-running VM")
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|
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if vm.hostname == os.path.join(
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settings["etcd"]["host_prefix"], self.destination.value
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):
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self.add_error(
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"Destination host couldn't be same as Source Host"
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)
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class AddSSHSchema(OTPSchema):
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def __init__(self, data):
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self.key_name = Field(
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"key_name", str, data.get("key_name", KeyError)
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)
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self.key = Field("key", str, data.get("key_name", KeyError))
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fields = [self.key_name, self.key]
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super().__init__(data=data, fields=fields)
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|
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class RemoveSSHSchema(OTPSchema):
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|
def __init__(self, data):
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self.key_name = Field(
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"key_name", str, data.get("key_name", KeyError)
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)
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fields = [self.key_name]
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super().__init__(data=data, fields=fields)
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|
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class GetSSHSchema(OTPSchema):
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|
def __init__(self, data):
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|
self.key_name = Field(
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"key_name", str, data.get("key_name", None)
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)
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fields = [self.key_name]
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super().__init__(data=data, fields=fields)
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|
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class CreateNetwork(OTPSchema):
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def __init__(self, data):
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self.network_name = Field("network_name", str, data.get("network_name", KeyError))
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self.type = Field("type", str, data.get("type", KeyError))
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self.user = Field("user", bool, bool(data.get("user", False)))
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self.network_name.validation = self.network_name_validation
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self.type.validation = self.network_type_validation
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fields = [self.network_name, self.type, self.user]
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super().__init__(data, fields=fields)
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def network_name_validation(self):
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print(self.name.value, self.network_name.value)
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key = os.path.join(settings["etcd"]["network_prefix"], self.name.value, self.network_name.value)
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print(key)
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network = shared.etcd_client.get(key, value_in_json=True)
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if network:
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self.add_error(
|
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"Network with name {} already exists".format(
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self.network_name.value
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)
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)
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def network_type_validation(self):
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supported_network_types = ["vxlan"]
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if self.type.value not in supported_network_types:
|
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self.add_error(
|
|
"Unsupported Network Type. Supported network types are {}".format(
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supported_network_types
|
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)
|
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)
|