#!/usr/bin/env python3 from pathlib import Path import sys app_path = Path(sys.argv[1]) if len(sys.argv) > 1 else Path('/opt/virtuality/web/app.py') if not app_path.exists(): raise SystemExit(f'app.py not found: {app_path}') changed = [] text = app_path.read_text() if 'import tempfile' not in text: text = text.replace('import subprocess\n', 'import subprocess\nimport tempfile\n', 1) changed.append('tempfile import added') else: changed.append('tempfile import already present') if 'import xml.etree.ElementTree as ET' not in text: text = text.replace('from typing import Any\n', 'from typing import Any\nimport xml.etree.ElementTree as ET\n', 1) changed.append('ElementTree import added') else: changed.append('ElementTree import already present') helpers = r''' def parse_dominfo_value(dominfo: str, label: str) -> str: for line in (dominfo or "").splitlines(): if line.strip().lower().startswith(label.lower()): return line.split(":", 1)[1].strip() return "" def kib_text_to_mb(value: str) -> int: match = re.search(r"(\d+)", value or "") if not match: return 0 return max(0, int(int(match.group(1)) / 1024)) def current_vm_arch(name: str) -> str: result = run_cmd(["virsh", "dumpxml", name], timeout=12) if not result.get("ok"): return "unknown" try: root = ET.fromstring(result.get("stdout") or "") except Exception: return "unknown" os_type = root.find("os/type") return (os_type.attrib.get("arch") if os_type is not None else "") or "unknown" def vm_runtime_state(name: str) -> str: result = run_cmd(["virsh", "domstate", name], timeout=8) return (result.get("stdout") or "unknown").strip().lower() def vm_resource_settings(name: str) -> dict[str, Any]: dominfo = run_cmd(["virsh", "dominfo", name], timeout=10).get("stdout") or "" state = (parse_dominfo_value(dominfo, "State") or vm_runtime_state(name)).lower() vcpus_raw = parse_dominfo_value(dominfo, "CPU(s)") used_memory_raw = parse_dominfo_value(dominfo, "Used memory") max_memory_raw = parse_dominfo_value(dominfo, "Max memory") memory_mb = kib_text_to_mb(used_memory_raw) or kib_text_to_mb(max_memory_raw) or 1024 try: vcpus = int(re.search(r"\d+", vcpus_raw or "1").group(0)) except Exception: vcpus = 1 return { "state": state, "is_shutoff": state in ("shut off", "shutoff", "shut-off"), "memory_mb": memory_mb, "vcpus": vcpus, "arch": current_vm_arch(name), } def apply_vm_resources(name: str, memory_mb: int, vcpus: int, guest_arch: str) -> tuple[bool, str]: if not valid_vm_name(name) or not vm_exists(name): return False, "VM не найдена." resources = vm_resource_settings(name) if not resources.get("is_shutoff"): return False, "CPU/RAM/архитектуру можно менять только когда VM выключена. Сначала выключи VM." if memory_mb < 512 or memory_mb > 262144: return False, "RAM должна быть от 512 MB до 262144 MB." if vcpus < 1 or vcpus > 128: return False, "CPU должен быть от 1 до 128 vCPU." if guest_arch not in ("keep", "x86_64", "aarch64"): return False, "Некорректная архитектура VM." result = run_cmd(["virsh", "dumpxml", name], timeout=15) if not result.get("ok"): return False, result.get("stderr") or "Не удалось получить XML VM." try: root = ET.fromstring(result.get("stdout") or "") except Exception as exc: return False, f"Не удалось разобрать XML VM: {exc}" memory_kib = str(int(memory_mb) * 1024) for tag in ("memory", "currentMemory"): node = root.find(tag) if node is None: node = ET.SubElement(root, tag) node.text = memory_kib node.set("unit", "KiB") vcpu_node = root.find("vcpu") if vcpu_node is None: vcpu_node = ET.SubElement(root, "vcpu") vcpu_node.text = str(int(vcpus)) vcpu_node.set("placement", "static") arch_changed = False if guest_arch != "keep": os_type = root.find("os/type") if os_type is None: os_node = root.find("os") if os_node is None: os_node = ET.SubElement(root, "os") os_type = ET.SubElement(os_node, "type") os_type.text = "hvm" old_arch = os_type.attrib.get("arch", "") if old_arch != guest_arch: os_type.set("arch", guest_arch) if guest_arch == "aarch64": os_type.set("machine", "virt") arch_changed = True xml_text = ET.tostring(root, encoding="unicode") with tempfile.NamedTemporaryFile("w", encoding="utf-8", suffix=".xml", delete=False) as handle: handle.write(xml_text) tmp_name = handle.name try: define = run_cmd(["virsh", "define", tmp_name], timeout=30) finally: Path(tmp_name).unlink(missing_ok=True) if not define.get("ok"): return False, define.get("stderr") or "virsh define завершился ошибкой." message = f"Ресурсы VM применены: CPU {vcpus}, RAM {memory_mb} MB" if arch_changed: message += f", архитектура {guest_arch}. Важно: смена архитектуры может потребовать совместимый диск/загрузчик." return True, message ''' if 'def apply_vm_resources(name: str, memory_mb: int, vcpus: int, guest_arch: str)' not in text: marker = '\n\ndef vm_details(name: str) -> dict[str, Any]:' if marker not in text: raise SystemExit('vm_details marker not found') text = text.replace(marker, helpers + marker, 1) changed.append('existing VM resources helpers added') else: changed.append('existing VM resources helpers already present') if '"resource_settings": vm_resource_settings(name)' not in text: replacements = [ ( '"iso_message": request.query_params.get("iso_message", ""), "iso_error": request.query_params.get("iso_error", "")})', '"iso_message": request.query_params.get("iso_message", ""), "iso_error": request.query_params.get("iso_error", ""), "resource_settings": vm_resource_settings(name), "resource_message": request.query_params.get("resource_message", ""), "resource_error": request.query_params.get("resource_error", "")})', ), ( '"boot_message": request.query_params.get("boot_message", ""), "boot_error": request.query_params.get("boot_error", "")})', '"boot_message": request.query_params.get("boot_message", ""), "boot_error": request.query_params.get("boot_error", ""), "resource_settings": vm_resource_settings(name), "resource_message": request.query_params.get("resource_message", ""), "resource_error": request.query_params.get("resource_error", "")})', ), ( '"host_ip": system_summary()["ip"]})', '"host_ip": system_summary()["ip"], "resource_settings": vm_resource_settings(name), "resource_message": request.query_params.get("resource_message", ""), "resource_error": request.query_params.get("resource_error", "")})', ), ] for old, new in replacements: if old in text: text = text.replace(old, new, 1) changed.append('vm detail context gets resource settings') break else: raise SystemExit('vm detail context marker not found') else: changed.append('vm detail context already has resource settings') route = r''' @app.post("/vm/{name}/resources") def vm_resources_apply(request: Request, name: str, memory_mb: int = Form(...), vcpus: int = Form(...), guest_arch: str = Form("keep")): auth_redirect = require_auth(request) if auth_redirect: return auth_redirect ok, message = apply_vm_resources(name, memory_mb, vcpus, guest_arch) if ok: return RedirectResponse(url=f"/vm/{name}?resource_message={message}", status_code=303) return RedirectResponse(url=f"/vm/{name}?resource_error={message}", status_code=303) ''' if '@app.post("/vm/{name}/resources")' not in text: marker = '\n\n@app.post("/vm/{name}/boot-order")' if marker not in text: marker = '\n\n@app.post("/vm/{name}/iso/mount")' if marker not in text: marker = '\n\n@app.post("/vm/{name}/{action}")' if marker not in text: raise SystemExit('vm action marker not found') text = text.replace(marker, route + marker, 1) changed.append('existing VM resources route added') else: changed.append('existing VM resources route already present') app_path.write_text(text) print('existing VM resources patch applied:') for item in changed: print(f'- {item}')