# TODO # 1. Allow user of realm ungleich-admin to perform any action on # any user vm. import json import subprocess import os from uuid import uuid4 from flask import Flask, request from flask_restful import Resource, Api from ucloud_common.vm import VmPool, VMStatus from ucloud_common.host import HostPool from ucloud_common.request import (RequestEntry, RequestPool, RequestType) from config import etcd_client as client from config import (WITHOUT_CEPH, VM_PREFIX, HOST_PREFIX, REQUEST_PREFIX, FILE_PREFIX, IMAGE_PREFIX, logging) from schemas import (CreateVMSchema, VMStatusSchema, CreateImageSchema, VmActionSchema, OTPSchema, CreateHostSchema, VmMigrationSchema) app = Flask(__name__) api = Api(app) VM_POOL = VmPool(client, VM_PREFIX) HOST_POOL = HostPool(client, HOST_PREFIX) REQUEST_POOL = RequestPool(client, REQUEST_PREFIX) class CreateVM(Resource): @staticmethod def post(): data = request.json validator = CreateVMSchema(data) if validator.is_valid(): vm_uuid = uuid4().hex vm_key = os.path.join(VM_PREFIX, vm_uuid) vm_entry = { "owner": data["name"], "specs": data["specs"], "hostname": "", "status": "", "image_uuid": data["image_uuid"], "log": [], "storage_attachment": [] } client.put(vm_key, vm_entry, value_in_json=True) # Create ScheduleVM Request r = RequestEntry.from_scratch(type=RequestType.ScheduleVM, uuid=vm_uuid) REQUEST_POOL.put(r) return {"message": "VM Creation Queued"}, 200 return validator.get_errors(), 400 class VmStatus(Resource): @staticmethod def get(): data = request.json validator = VMStatusSchema(data) if validator.is_valid(): vm = VM_POOL.get(os.path.join(VM_PREFIX, data['uuid'])) return str(vm) else: return validator.get_errors(), 400 class CreateImage(Resource): @staticmethod def post(): data = request.json validator = CreateImageSchema(data) if validator.is_valid(): file_entry = client.get(os.path.join(FILE_PREFIX, data['uuid'])) file_entry_value = json.loads(file_entry.value) image_entry_json = { "status": "TO_BE_CREATED", "owner": file_entry_value["owner"], "filename": file_entry_value["filename"], "name": data["name"], "store_name": data["image_store"], "visibility": "public", } client.put(os.path.join(IMAGE_PREFIX, data['uuid']), json.dumps(image_entry_json)) return {"message": "Image successfully created"} return validator.get_errors(), 400 class ListPublicImages(Resource): @staticmethod def get(): images = client.get_prefix(IMAGE_PREFIX) r = {} for image in images: r[image.key.split("/")[-1]] = json.loads(image.value) return r, 200 class VMAction(Resource): @staticmethod def post(): data = request.json validator = VmActionSchema(data) if validator.is_valid(): vm_entry = VM_POOL.get(os.path.join(VM_PREFIX, data['uuid'])) action = data["action"] if action == "start": vm_entry.status = VMStatus.requested_start VM_POOL.put(vm_entry) action = "schedule" if action == "delete" and vm_entry.hostname == "": try: path_without_protocol = vm_entry.path[vm_entry.path.find(":")+1:] if WITHOUT_CEPH: command_to_delete = ["rm", os.path.join("/var/vm", vm_entry.uuid)] else: command_to_delete = ["rbd", "rm", path_without_protocol] subprocess.check_output(command_to_delete, stderr=subprocess.PIPE) except subprocess.CalledProcessError as e: if "No such file" in e.stderr.decode("utf-8"): client.client.delete(vm_entry.key) return {"message": "VM successfully deleted"} else: logging.exception(e) return {"message": "Some error occurred while deleting VM"} else: client.client.delete(vm_entry.key) return {"message": "VM successfully deleted"} r = RequestEntry.from_scratch(type="{}VM".format(action.title()), uuid=data['uuid'], hostname=vm_entry.hostname) REQUEST_POOL.put(r) return {"message": "VM {} Queued".format(action.title())}, 200 else: return validator.get_errors(), 400 class VMMigration(Resource): @staticmethod def post(): data = request.json validator = VmMigrationSchema(data) if validator.is_valid(): vm = VM_POOL.get(data['uuid']) r = RequestEntry.from_scratch(type=RequestType.ScheduleVM, uuid=vm.uuid, destination=os.path.join(HOST_PREFIX, data["destination"]), migration=True) REQUEST_POOL.put(r) return {"message": "VM Migration Initialization Queued"}, 200 else: return validator.get_errors(), 400 class ListUserVM(Resource): @staticmethod def get(): data = request.json validator = OTPSchema(data) if validator.is_valid(): vms = client.get_prefix(VM_PREFIX, value_in_json=True) if vms: return_vms = [] user_vms = list(filter(lambda v: v.value["owner"] == data["name"], vms)) for vm in user_vms: return_vms.append( { "vm_uuid": vm.key.split("/")[-1], "specs": vm.value["specs"], "status": vm.value["status"], "hostname": vm.value["hostname"], "vnc_socket": vm.valie["vnc_socket"] } ) return {"message": return_vms}, 200 else: return {"message": "No VM found"}, 404 else: return validator.get_errors(), 400 class ListUserFiles(Resource): @staticmethod def get(): data = request.json validator = OTPSchema(data) if validator.is_valid(): files = client.get_prefix(FILE_PREFIX, value_in_json=True) return_files = [] user_files = list(filter(lambda f: f.value["owner"] == data["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 validator.get_errors(), 400 class CreateHost(Resource): @staticmethod def post(): data = request.json validator = CreateHostSchema(data) if validator.is_valid(): host_key = os.path.join(HOST_PREFIX, uuid4().hex) host_entry = { "specs": data["specs"], "hostname": data["hostname"], "status": "DEAD", "last_heartbeat": "", } client.put(host_key, host_entry, value_in_json=True) return {"message": "Host Created"}, 200 return validator.get_errors(), 400 class ListHost(Resource): @staticmethod def get(): hosts = HOST_POOL.hosts r = {host.key: {"status": host.status, "specs": host.specs, "hostname": host.hostname} for host in hosts} return r, 200 api.add_resource(CreateVM, "/vm/create") api.add_resource(VmStatus, "/vm/status") api.add_resource(VMAction, "/vm/action") api.add_resource(VMMigration, "/vm/migrate") 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") api.add_resource(ListHost, "/host/list") if __name__ == "__main__": app.run(host="::", debug=True)