import subprocess import re import json import sys import pprint from flask import current_app from time import sleep from os.path import join from subprocess import run from capsulflask.db import get_model from capsulflask.shared import VirtualizationInterface, VirtualMachine, validate_capsul_id, my_exec_info_message class MockSpoke(VirtualizationInterface): def __init__(self): self.capsuls = dict() def capacity_avaliable(self, additional_ram_bytes): return True def get(self, id, get_ssh_host_keys): validate_capsul_id(id) ipv4 = "1.1.1.1" if id in self.capsuls: ipv4 = self.capsuls[id]['public_ipv4'] if get_ssh_host_keys: ssh_host_keys = json.loads("""[ {"key_type":"ED25519", "content":"ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIN8cna0zeKSKl/r8whdn/KmDWhdzuWRVV0GaKIM+eshh", "sha256":"V4X2apAF6btGAfS45gmpldknoDX0ipJ5c6DLfZR2ttQ"}, {"key_type":"RSA", "content":"ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCvotgzgEP65JUQ8S8OoNKy1uEEPEAcFetSp7QpONe6hj4wPgyFNgVtdoWdNcU19dX3hpdse0G8OlaMUTnNVuRlbIZXuifXQ2jTtCFUA2mmJ5bF+XjGm3TXKMNGh9PN+wEPUeWd14vZL+QPUMev5LmA8cawPiU5+vVMLid93HRBj118aCJFQxLgrdP48VPfKHFRfCR6TIjg1ii3dH4acdJAvlmJ3GFB6ICT42EmBqskz2MPe0rIFxH8YohCBbAbrbWYcptHt4e48h4UdpZdYOhEdv89GrT8BF2C5cbQ5i9qVpI57bXKrj8hPZU5of48UHLSpXG8mbH0YDiOQOfKX/Mt", "sha256":"ghee6KzRnBJhND2kEUZSaouk7CD6o6z2aAc8GPkV+GQ"}, {"key_type":"ECDSA", "content":"ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBLLgOoATz9R4aS2kk7vWoxX+lshK63t9+5BIHdzZeFE1o+shlcf0Wji8cN/L1+m3bi0uSETZDOAWMP3rHLJj9Hk=", "sha256":"aCYG1aD8cv/TjzJL0bi9jdabMGksdkfa7R8dCGm1yYs"} ]""") return VirtualMachine(id, current_app.config["SPOKE_HOST_ID"], ipv4=ipv4, state="running", ssh_host_keys=ssh_host_keys) return VirtualMachine(id, current_app.config["SPOKE_HOST_ID"], ipv4=ipv4, state="running") def get_all_by_host_and_network(self) -> dict: to_return = get_model().non_deleted_vms_by_host_and_network(None) current_app.logger.info(f"MOCK get_all_by_host_and_network: {json.dumps(to_return)}") return to_return def create(self, email: str, id: str, template_image_file_name: str, vcpus: int, memory_mb: int, ssh_authorized_keys: list, network_name: str, public_ipv4: str): validate_capsul_id(id) current_app.logger.info(f"mock create: {id} for {email}") self.capsuls[id] = dict(email=email, id=id, network_name=network_name, public_ipv4=public_ipv4) sleep(1) def destroy(self, email: str, id: str): current_app.logger.info(f"mock destroy: {id} for {email}") def vm_state_command(self, email: str, id: str, command: str): current_app.logger.info(f"mock {command}: {id} for {email}") class ShellScriptSpoke(VirtualizationInterface): def validate_completed_process(self, completedProcess, email=None): emailPart = "" if email != None: emailPart = f"for {email}" if completedProcess.returncode != 0: raise RuntimeError(f"""{" ".join(completedProcess.args)} failed {emailPart} with exit code {completedProcess.returncode} stdout: {completedProcess.stdout} stderr: {completedProcess.stderr} """) def capacity_avaliable(self, additional_ram_bytes): my_args=[join(current_app.root_path, 'shell_scripts/capacity-avaliable.sh'), str(additional_ram_bytes)] completedProcess = run(my_args, capture_output=True) if completedProcess.returncode != 0: current_app.logger.error(f""" capacity-avaliable.sh exited {completedProcess.returncode} with stdout: {completedProcess.stdout} stderr: {completedProcess.stderr} """) return False lines = completedProcess.stdout.splitlines() output = lines[len(lines)-1] if not output == b"yes": current_app.logger.error(f"capacity-avaliable.sh exited 0 and returned {output} but did not return \"yes\" ") return False return True def get(self, id, get_ssh_host_keys): validate_capsul_id(id) completedProcess = run([join(current_app.root_path, 'shell_scripts/get.sh'), id], capture_output=True) self.validate_completed_process(completedProcess) lines = completedProcess.stdout.splitlines() if len(lines) == 0: current_app.logger.warning("shell_scripts/get.sh returned zero lines!") return None result_string = lines[0].decode("utf-8") fields = result_string.split(" ") if fields[0] != "true": current_app.logger.warning(f"shell_scripts/get.sh was called for {id} which libvirt says does not exist.") return None if len(fields) < 2: return VirtualMachine(id, current_app.config["SPOKE_HOST_ID"]) state = fields[1] if len(fields) < 3: return VirtualMachine(id, current_app.config["SPOKE_HOST_ID"], state=state) ipaddr = fields[2] if not re.match(r"^([0-9]{1,3}\.){3}[0-9]{1,3}$", ipaddr): return VirtualMachine(id, current_app.config["SPOKE_HOST_ID"], state=state) if get_ssh_host_keys: try: completedProcess2 = run([join(current_app.root_path, 'shell_scripts/ssh-keyscan.sh'), ipaddr], capture_output=True) self.validate_completed_process(completedProcess2) ssh_host_keys = json.loads(completedProcess2.stdout.decode("utf-8")) return VirtualMachine(id, current_app.config["SPOKE_HOST_ID"], state=state, ipv4=ipaddr, ssh_host_keys=ssh_host_keys) except: current_app.logger.warning(f""" failed to ssh-keyscan {id} at {ipaddr}: {my_exec_info_message(sys.exc_info())}""" ) return VirtualMachine(id, current_app.config["SPOKE_HOST_ID"], state=state, ipv4=ipaddr) def get_all_by_host_and_network(self) -> dict: vm_list_process = run([join(current_app.root_path, 'shell_scripts/virsh-list.sh')], capture_output=True) self.validate_completed_process(vm_list_process) vms_json_string = vm_list_process.stdout.decode("utf-8") #current_app.logger.info(f"vms_json_string: {vms_json_string}") list_of_vms = json.loads(vms_json_string) #current_app.logger.info(f"list_of_vms: {json.dumps(list_of_vms)}") vm_state_by_id = dict() for vm in list_of_vms: vm_state_by_id[vm['id']] = vm['state'] net_list_process = run([join(current_app.root_path, 'shell_scripts/virsh-net-list.sh')], capture_output=True) self.validate_completed_process(net_list_process) net_list_json_string = net_list_process.stdout.decode("utf-8") #current_app.logger.info(f"net_list_json_string: {net_list_json_string}") list_of_networks = json.loads(net_list_json_string) #current_app.logger.info(f"list_of_networks: {json.dumps(list_of_networks)}") vms_by_id = dict() vm_id_by_mac = dict() for network in list_of_networks: macs_json_filename = f"{current_app.config['LIBVIRT_DNSMASQ_PATH']}/{network['virtual_bridge_name']}.macs" with open(macs_json_filename, mode='r') as macs_json_file: vms_with_macs = [] try: vms_with_macs = json.load(macs_json_file) except: current_app.logger.warn(f"failed to parse the JSON file '{macs_json_filename}'") for vm in vms_with_macs: for mac in vm['macs']: if mac not in vm_id_by_mac: vm_id_by_mac[mac] = vm['domain'] else: raise Exception(f"the mac address '{mac}' is used by both '{vm_id_by_mac[mac]}' and '{vm['domain']}'") if vm['domain'] not in vms_by_id: vm_state = 'shut off' if vm['domain'] in vm_state_by_id: vm_state = vm_state_by_id[vm['domain']] else: current_app.logger.warn(f"get_all_by_host_and_network: '{vm['domain']}' not in vm_state_by_id, defaulting to 'shut off'") vms_by_id[vm['domain']] = dict(macs=dict(), state=vm_state, network=network['name']) vms_by_id[vm['domain']]['macs'][mac] = True status_json_filename = f"{current_app.config['LIBVIRT_DNSMASQ_PATH']}/{network['virtual_bridge_name']}.status" with open(status_json_filename, mode='r') as status_json_file: statuses = [] try: statuses = json.load(status_json_file) except: current_app.logger.warn(f"failed to parse the JSON file '{status_json_filename}'") for status in statuses: if status['mac-address'] in vm_id_by_mac: vm_id = vm_id_by_mac[status['mac-address']] vms_by_id[vm_id]['ipv4'] = status['ip-address'] else: current_app.logger.warn(f"get_all_by_host_and_network: {status['mac-address']} not in vm_id_by_mac") networks = dict() for vm_id in vms_by_id: vm = vms_by_id[vm_id] if vm['network'] not in networks: networks[vm['network']] = [] networks[vm['network']].append(vm) to_return = dict() to_return[current_app.config['SPOKE_HOST_ID']] = networks return to_return def create(self, email: str, id: str, template_image_file_name: str, vcpus: int, memory_mb: int, ssh_authorized_keys: list, network_name: str, public_ipv4: str): validate_capsul_id(id) if not re.match(r"^[a-zA-Z0-9/_.-]+$", template_image_file_name): raise ValueError(f"template_image_file_name \"{template_image_file_name}\" must match \"^[a-zA-Z0-9/_.-]+$\"") for ssh_authorized_key in ssh_authorized_keys: if not re.match(r"^(ssh|ecdsa)-[0-9A-Za-z+/_=@:. -]+$", ssh_authorized_key): raise ValueError(f"ssh_authorized_key \"{ssh_authorized_key}\" must match \"^(ssh|ecdsa)-[0-9A-Za-z+/_=@:. -]+$\"") if isinstance(vcpus, int) and (vcpus < 1 or vcpus > 8): raise ValueError(f"vcpus \"{vcpus}\" must match 1 <= vcpus <= 8") if isinstance(memory_mb, int) and (memory_mb < 512 or memory_mb > 16384): raise ValueError(f"memory_mb \"{memory_mb}\" must match 512 <= memory_mb <= 16384") if not re.match(r"^[a-zA-Z0-9_-]+$", network_name): raise ValueError(f"network_name \"{network_name}\" must match \"^[a-zA-Z0-9_-]+\"") if not re.match(r"^[0-9.]+$", public_ipv4): raise ValueError(f"public_ipv4 \"{public_ipv4}\" must match \"^[0-9.]+$\"") ssh_keys_string = "\n".join(ssh_authorized_keys) completedProcess = run([ join(current_app.root_path, 'shell_scripts/create.sh'), id, template_image_file_name, str(vcpus), str(memory_mb), ssh_keys_string, network_name, public_ipv4 ], capture_output=True) self.validate_completed_process(completedProcess, email) lines = completedProcess.stdout.splitlines() status = lines[len(lines)-1].decode("utf-8") vmSettings = f""" id={id} template_image_file_name={template_image_file_name} vcpus={str(vcpus)} memory={str(memory_mb)} ssh_authorized_keys={ssh_keys_string} network_name={network_name} public_ipv4={public_ipv4} """ if not status == "success": raise ValueError(f"""failed to create vm for {email} with: {vmSettings} stdout: {completedProcess.stdout} stderr: {completedProcess.stderr} """) def destroy(self, email: str, id: str): validate_capsul_id(id) completedProcess = run([join(current_app.root_path, 'shell_scripts/destroy.sh'), id], capture_output=True) self.validate_completed_process(completedProcess, email) lines = completedProcess.stdout.splitlines() status = lines[len(lines)-1].decode("utf-8") if not status == "success": raise ValueError(f"""failed to destroy vm {id} for {email} on {current_app.config["SPOKE_HOST_ID"]}: stdout: {completedProcess.stdout} stderr: {completedProcess.stderr} """) def vm_state_command(self, email: str, id: str, command: str): validate_capsul_id(id) if command not in ["stop", "force-stop", "start", "restart"]: raise ValueError(f"command ({command}) must be one of stop, force-stop, start, or restart") completedProcess = run([join(current_app.root_path, f"shell_scripts/{command}.sh"), id], capture_output=True) self.validate_completed_process(completedProcess, email) returned_string = completedProcess.stdout.decode("utf-8") current_app.logger.info(f"{command} vm {id} for {email} returned: {returned_string}")