239 lines
10 KiB
Python
239 lines
10 KiB
Python
import subprocess
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import re
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import sys
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import requests
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import json
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import asyncio
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from typing import List, Tuple
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import aiohttp
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from flask import current_app
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from flask import session
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from time import sleep
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from os.path import join
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from subprocess import run
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from capsulflask.db import get_model
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from capsulflask.http_client import HTTPResult
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from capsulflask.shared import VirtualizationInterface, VirtualMachine, OnlineHost, validate_capsul_id, my_exec_info_message
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class MockHub(VirtualizationInterface):
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def capacity_avaliable(self, additional_ram_bytes):
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return True
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def get(self, id, get_ssh_host_keys):
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validate_capsul_id(id)
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if get_ssh_host_keys:
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ssh_host_keys = json.loads("""[
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{"key_type":"ED25519", "content":"ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIN8cna0zeKSKl/r8whdn/KmDWhdzuWRVV0GaKIM+eshh", "sha256":"V4X2apAF6btGAfS45gmpldknoDX0ipJ5c6DLfZR2ttQ"},
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{"key_type":"RSA", "content":"ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCvotgzgEP65JUQ8S8OoNKy1uEEPEAcFetSp7QpONe6hj4wPgyFNgVtdoWdNcU19dX3hpdse0G8OlaMUTnNVuRlbIZXuifXQ2jTtCFUA2mmJ5bF+XjGm3TXKMNGh9PN+wEPUeWd14vZL+QPUMev5LmA8cawPiU5+vVMLid93HRBj118aCJFQxLgrdP48VPfKHFRfCR6TIjg1ii3dH4acdJAvlmJ3GFB6ICT42EmBqskz2MPe0rIFxH8YohCBbAbrbWYcptHt4e48h4UdpZdYOhEdv89GrT8BF2C5cbQ5i9qVpI57bXKrj8hPZU5of48UHLSpXG8mbH0YDiOQOfKX/Mt", "sha256":"ghee6KzRnBJhND2kEUZSaouk7CD6o6z2aAc8GPkV+GQ"},
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{"key_type":"ECDSA", "content":"ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBLLgOoATz9R4aS2kk7vWoxX+lshK63t9+5BIHdzZeFE1o+shlcf0Wji8cN/L1+m3bi0uSETZDOAWMP3rHLJj9Hk=", "sha256":"aCYG1aD8cv/TjzJL0bi9jdabMGksdkfa7R8dCGm1yYs"}
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]""")
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return VirtualMachine(id, current_app.config["SPOKE_HOST_ID"], ipv4="1.1.1.1", ssh_host_keys=ssh_host_keys)
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return VirtualMachine(id, current_app.config["SPOKE_HOST_ID"], ipv4="1.1.1.1")
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def list_ids(self) -> list:
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return get_model().all_non_deleted_vm_ids()
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def create(self, email: str, id: str, template_image_file_name: str, vcpus: int, memory_mb: int, ssh_authorized_keys: list):
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validate_capsul_id(id)
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current_app.logger.info(f"mock create: {id} for {email}")
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sleep(1)
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def destroy(self, email: str, id: str):
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current_app.logger.info(f"mock destroy: {id} for {email}")
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class CapsulFlaskHub(VirtualizationInterface):
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def synchronous_operation(self, hosts: List[OnlineHost], payload: str) -> List[HTTPResult]:
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return self.generic_operation(hosts, payload, True)[1]
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def asynchronous_operation(self, hosts: List[OnlineHost], payload: str) -> Tuple[int, List[HTTPResult]]:
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return self.generic_operation(hosts, payload, False)
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def generic_operation(self, hosts: List[OnlineHost], payload: str, immediate_mode: bool) -> Tuple[int, List[HTTPResult]]:
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email = session["account"]
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if not email or email == "":
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raise ValueError("generic_operation was called but user was not logged in")
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url_path = "/spoke/operation"
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operation_id = None
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if not immediate_mode:
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operation_id = get_model().create_operation(hosts, email, payload)
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url_path = f"/spoke/operation/{operation_id}"
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authorization_header = f"Bearer {current_app.config['HUB_TOKEN']}"
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results = current_app.config["HTTP_CLIENT"].make_requests_sync(hosts, url_path, payload, authorization_header=authorization_header)
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for i in range(len(hosts)):
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host = hosts[i]
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result = results[i]
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assignment_status = "pending"
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if result.status_code == -1:
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assignment_status = "no_response_from_host"
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if result.status_code != 200:
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assignment_status = "error_response_from_host"
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else:
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valid_statuses = {
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"assigned": True,
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"not_applicable": True,
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"assigned_to_other_host": True,
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}
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result_is_json = False
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result_is_dict = False
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result_has_status = False
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result_has_valid_status = False
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assignment_status = "invalid_response_from_host"
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error_message = ""
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try:
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result_body = json.loads(result.body)
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result_is_json = True
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result_is_dict = isinstance(result_body, dict)
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result_has_status = result_is_dict and 'assignment_status' in result_body
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result_has_valid_status = result_has_status and result_body['assignment_status'] in valid_statuses
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if result_has_valid_status:
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assignment_status = result_body['assignment_status']
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if result_is_dict and "error_message" in result_body:
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error_message = result_body['error_message']
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except:
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pass
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if not result_has_valid_status:
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operation_desc = ""
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if operation_id:
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operation_desc = f"for operation {operation_id}"
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current_app.logger.error(f"""error reading assignment_status {operation_desc} from host {host.id}:
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result_is_json: {result_is_json}
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result_is_dict: {result_is_dict}
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result_has_status: {result_has_status}
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result_has_valid_status: {result_has_valid_status}
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error_message: {error_message}
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"""
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)
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if not immediate_mode:
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get_model().update_host_operation(host.id, operation_id, assignment_status, None)
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return (operation_id, results)
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def capacity_avaliable(self, additional_ram_bytes):
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online_hosts = get_model().get_online_hosts()
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payload = json.dumps(dict(type="capacity_avaliable", additional_ram_bytes=additional_ram_bytes))
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results = self.synchronous_operation(online_hosts, payload)
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for result in results:
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try:
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result_body = json.loads(result.body)
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if isinstance(result_body, dict) and 'capacity_avaliable' in result_body and result_body['capacity_avaliable'] == True:
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return True
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except:
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pass
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return False
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def get(self, id, get_ssh_host_keys) -> VirtualMachine:
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validate_capsul_id(id)
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host = get_model().host_of_capsul(id)
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if host is not None:
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payload = json.dumps(dict(type="get", id=id, get_ssh_host_keys=get_ssh_host_keys))
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results = self.synchronous_operation([host], payload)
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for result in results:
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try:
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result_body = json.loads(result.body)
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if isinstance(result_body, dict) and ('ipv4' in result_body or 'ipv6' in result_body):
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return VirtualMachine(id, host=host, ipv4=result_body['ipv4'], ipv6=result_body['ipv6'], ssh_host_keys=result_body['ssh_host_keys'])
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except:
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pass
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return None
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def list_ids(self) -> list:
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online_hosts = get_model().get_online_hosts()
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payload = json.dumps(dict(type="list_ids"))
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results = self.synchronous_operation(online_hosts, payload)
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to_return = []
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for i in range(len(results)):
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host = online_hosts[i]
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result = results[i]
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try:
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result_body = json.loads(result.body)
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if isinstance(result_body, dict) and 'ids' in result_body and isinstance(result_body['ids'], list):
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all_valid = True
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for id in result_body['ids']:
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try:
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validate_capsul_id(id)
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to_return.append(id)
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except:
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all_valid = False
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if not all_valid:
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current_app.logger.error(f"""error reading ids for list_ids operation, host {host.id}""")
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else:
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result_json_string = json.dumps({"error_message": "invalid response, missing 'ids' list"})
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current_app.logger.error(f"""missing 'ids' list for list_ids operation, host {host.id}""")
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except:
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# no need to do anything here since if it cant be parsed then generic_operation will handle it.
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pass
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return to_return
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def create(self, email: str, id: str, template_image_file_name: str, vcpus: int, memory_mb: int, ssh_authorized_keys: list):
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validate_capsul_id(id)
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online_hosts = get_model().get_online_hosts()
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#current_app.logger.debug(f"hub_model.create(): ${len(online_hosts)} hosts")
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payload = json.dumps(dict(
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type="create",
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email=email,
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id=id,
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template_image_file_name=template_image_file_name,
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vcpus=vcpus,
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memory_mb=memory_mb,
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ssh_authorized_keys=ssh_authorized_keys,
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))
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op = self.asynchronous_operation(online_hosts, payload)
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operation_id = op[0]
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results = op[1]
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number_of_assigned = 0
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error_message = ""
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assigned_hosts = []
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for i in range(len(results)):
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host = online_hosts[i]
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result = results[i]
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try:
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result_body = json.loads(result.body)
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if isinstance(result_body, dict) and 'assignment_status' in result_body and result_body['assignment_status'] == "assigned":
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number_of_assigned += 1
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assigned_hosts.append(host.id)
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if isinstance(result_body, dict) and 'error_message' in result_body:
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error_message = result_body['error_message']
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except:
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# no need to do anything here since if it cant be parsed then generic_operation will handle it.
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pass
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if number_of_assigned != 1:
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assigned_hosts_string = ", ".join(assigned_hosts)
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raise ValueError(f"expected create capsul operation {operation_id} to be assigned to one host, it was assigned to {number_of_assigned} ({assigned_hosts_string})")
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if error_message != "":
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raise ValueError(f"create capsul operation {operation_id} on {assigned_hosts_string} failed with {error_message}")
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def destroy(self, email: str, id: str):
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validate_capsul_id(id)
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result_status = None
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host = get_model().host_of_capsul(id)
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if host is not None:
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payload = json.dumps(dict(type="destroy", email=email, id=id))
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results = self.synchronous_operation([host], payload)
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result_json_string = "<no response from host>"
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for result in results:
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try:
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result_json_string = result.body
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result_body = json.loads(result_json_string)
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if isinstance(result_body, dict) and 'status' in result_body:
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result_status = result_body['status']
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except:
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pass
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if not result_status == "success":
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raise ValueError(f"""failed to destroy vm "{id}" on host "{host.id}" for {email}: {result_json_string}""")
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