636 lines
23 KiB
Python
636 lines
23 KiB
Python
import json
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import logging
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import os
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import threading
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import time
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from dataclasses import dataclass
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from datetime import datetime
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from ipaddress import ip_address
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from pathlib import Path
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from typing import Dict, List, Tuple
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from cryptography.fernet import Fernet, InvalidToken
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from pyModbusTCP.client import ModbusClient
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from werkzeug.security import check_password_hash, generate_password_hash
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from zabbix_utils import ItemValue, Sender
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DEFAULT_CONFIG_TEMPLATE = {
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"zabbix_server": "172.16.33.6",
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"hostname_zabbix": "NFS-320",
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"web_user": "admin",
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"nodes": [],
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}
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DEFAULT_MODBUS_PORT = 502
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LEGACY_LICENSE_KEY = b"vS-C5Z_R1ST-Gf_K8_L9_Xo2-M1A3B5C7D9E1F2G3H4="
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MAX_DISCOVERY_ADDR = 600
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MODBUS_BLOCK_SIZE = 120
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DISCOVERY_IGNORED_VALUES = {0, 255, 65535}
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POLL_INTERVAL_SECONDS = 2
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RETRY_INTERVAL_SECONDS = 5
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MAPA_STATUS_BASE = {
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5120: {"label": "NORMAL / OK", "color": "#28a745"},
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3088: {"label": "INCIDENTE", "color": "#dc3545"},
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3344: {"label": "INCIDENTE ACK", "color": "#007bff"},
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13312: {"label": "REMOVIDO", "color": "#fd7e14"},
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0: {"label": "VAZIO", "color": "#6c757d"},
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}
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LOGGER = logging.getLogger("v-fire-monitor")
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class User:
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def __init__(self, user_id: str):
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self.id = user_id
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@property
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def is_authenticated(self) -> bool:
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return True
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@property
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def is_active(self) -> bool:
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return True
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@property
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def is_anonymous(self) -> bool:
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return False
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def get_id(self) -> str:
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return self.id
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class JsonStore:
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def __init__(self, path: Path):
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self.path = path
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def load(self, default):
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if not self.path.exists():
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return default
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try:
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with self.path.open("r", encoding="utf-8") as handle:
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return json.load(handle)
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except (json.JSONDecodeError, OSError) as exc:
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LOGGER.warning("Falha ao carregar %s: %s", self.path.name, exc)
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return default
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def save(self, data) -> None:
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self.path.parent.mkdir(parents=True, exist_ok=True)
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temp_path = self.path.with_suffix(f"{self.path.suffix}.tmp")
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with temp_path.open("w", encoding="utf-8") as handle:
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json.dump(data, handle, indent=4, ensure_ascii=False)
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temp_path.replace(self.path)
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def write_private_text(path: Path, content: str) -> None:
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path.parent.mkdir(parents=True, exist_ok=True)
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path.write_text(content, encoding="utf-8")
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if os.name != "nt":
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path.chmod(0o600)
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def build_default_config(default_password: str) -> dict:
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config = dict(DEFAULT_CONFIG_TEMPLATE)
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config["web_password_hash"] = generate_password_hash(default_password)
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return config
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def ensure_secret_key(secret_path: Path) -> str:
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if secret_path.exists():
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return secret_path.read_text(encoding="utf-8").strip()
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secret = Fernet.generate_key().decode("ascii")
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write_private_text(secret_path, secret)
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LOGGER.info("Chave de sessão criada em %s", secret_path.name)
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return secret
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def normalize_config(data: dict, default_password: str) -> dict:
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config = build_default_config(default_password)
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config.update(data or {})
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legacy_password = str((data or {}).get("web_password", "")).strip()
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if legacy_password:
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config["web_password_hash"] = generate_password_hash(legacy_password)
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config.pop("web_password", None)
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config["web_user"] = str(config.get("web_user", DEFAULT_CONFIG_TEMPLATE["web_user"])).strip() or DEFAULT_CONFIG_TEMPLATE[
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"web_user"
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]
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normalized_nodes = []
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for raw_node in config.get("nodes", []):
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try:
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normalized_nodes.append(validate_node_payload(raw_node))
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except ValueError as exc:
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LOGGER.warning("Node ignorado durante normalizacao: %s", exc)
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config["nodes"] = normalized_nodes
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return config
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def load_license_key(require_env: bool) -> bytes:
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env_key = os.getenv("VFM_LICENSE_MASTER_KEY")
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allow_legacy = os.getenv("VFM_ALLOW_LEGACY_LICENSE_KEY", os.getenv("ALLOW_LEGACY_LICENSE_KEY", "0")) == "1"
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if env_key:
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return env_key.encode("utf-8")
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if require_env and not allow_legacy:
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raise RuntimeError(
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"VFM_LICENSE_MASTER_KEY e obrigatoria em producao. Defina a variavel de ambiente antes de iniciar o sistema."
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)
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LOGGER.warning(
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"VFM_LICENSE_MASTER_KEY nao definido. Usando chave legada embutida; mova a chave para variavel de ambiente."
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)
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return LEGACY_LICENSE_KEY
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def get_status_info(value: int) -> dict:
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low_byte = value & 0xFF
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return MAPA_STATUS_BASE.get(
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value,
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MAPA_STATUS_BASE.get(low_byte, {"label": f"ST {value}", "color": "#6c757d"}),
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)
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def get_hardware_id() -> str:
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try:
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if os.name == "nt":
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import subprocess
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output = subprocess.check_output(
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[
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"powershell",
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"-NoProfile",
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"-Command",
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"(Get-CimInstance Win32_ComputerSystemProduct).UUID.Trim()",
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],
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text=True,
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)
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return output.strip()
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machine_id = Path("/etc/machine-id")
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if machine_id.exists():
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return machine_id.read_text(encoding="utf-8").strip()[:32]
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except Exception as exc: # pragma: no cover
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LOGGER.warning("Nao foi possivel obter hardware id: %s", exc)
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return "ID-ERRO-VOLTEC-001"
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def validate_node_payload(data: dict) -> dict:
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if not isinstance(data, dict):
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raise ValueError("Formato de node invalido.")
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nome = str(data.get("nome", "")).strip()
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ip = str(data.get("ip", "")).strip()
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if not nome:
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raise ValueError("Nome do node e obrigatorio.")
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if not ip:
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raise ValueError("IP do node e obrigatorio.")
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try:
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ip_address(ip)
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except ValueError:
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raise ValueError(f"IP invalido para node {nome}.") from None
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try:
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unit = int(data.get("unit"))
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except (TypeError, ValueError):
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raise ValueError(f"Unit invalido para node {nome}.") from None
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try:
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port = int(data.get("port", DEFAULT_MODBUS_PORT))
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except (TypeError, ValueError):
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raise ValueError(f"Porta invalida para node {nome}.") from None
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if unit < 0 or unit > 255:
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raise ValueError(f"Unit fora do intervalo para node {nome}.")
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if port < 1 or port > 65535:
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raise ValueError(f"Porta fora do intervalo para node {nome}.")
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return {"nome": nome, "ip": ip, "unit": unit, "port": port}
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def validate_login_payload(username: str, password: str) -> tuple[str, str]:
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normalized_username = username.strip()
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if not normalized_username:
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raise ValueError("Usuario e obrigatorio.")
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if len(normalized_username) > 64:
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raise ValueError("Usuario excede o limite de 64 caracteres.")
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if len(password) < 8:
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raise ValueError("Senha deve ter ao menos 8 caracteres.")
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if len(password) > 128:
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raise ValueError("Senha excede o limite de 128 caracteres.")
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return normalized_username, password
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def contiguous_ranges(addresses: List[int]) -> List[Tuple[int, int]]:
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if not addresses:
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return []
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sorted_addresses = sorted(set(addresses))
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ranges: List[Tuple[int, int]] = []
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start = sorted_addresses[0]
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previous = start
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for address in sorted_addresses[1:]:
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if address == previous + 1 and (address - start + 1) <= MODBUS_BLOCK_SIZE:
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previous = address
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continue
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ranges.append((start, previous))
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start = previous = address
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ranges.append((start, previous))
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return ranges
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def discover_node(node: dict, current_map: dict) -> dict:
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client = ModbusClient(
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host=node["ip"],
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port=node.get("port", DEFAULT_MODBUS_PORT),
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unit_id=node["unit"],
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auto_open=True,
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timeout=1,
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)
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discovered = {}
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try:
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for start in range(1, MAX_DISCOVERY_ADDR + 1, MODBUS_BLOCK_SIZE):
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count = min(MODBUS_BLOCK_SIZE, MAX_DISCOVERY_ADDR - start + 1)
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registers = client.read_holding_registers(start, count)
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if not registers:
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continue
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for offset, value in enumerate(registers):
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if value in DISCOVERY_IGNORED_VALUES:
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continue
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address = start + offset
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key = f"{node['ip']}_{node['unit']}_{address}"
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existing = current_map.get(key, {})
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if existing.get("label"):
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label = existing["label"]
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else:
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device_type = "D" if address < 160 else ("M" if address < 350 else "P")
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label = f"{node['nome']}-{device_type}{address:03}"
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discovered[key] = {
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"label": label,
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"status": value,
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"node_nome": node["nome"],
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}
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finally:
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client.close()
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return discovered
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@dataclass
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class LicenseStatus:
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valid: bool
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message: str
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hardware_id: str
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days_remaining: int
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class LicenseService:
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def __init__(self, license_path: Path, master_key: bytes):
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self.license_path = license_path
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self.fernet = Fernet(master_key)
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def verify(self) -> LicenseStatus:
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hardware_id = get_hardware_id()
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if not self.license_path.exists():
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return LicenseStatus(False, "Licenca ausente", hardware_id, 0)
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try:
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serial = self.license_path.read_text(encoding="utf-8").strip()
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payload = json.loads(self.fernet.decrypt(serial.encode("utf-8")).decode("utf-8"))
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licensed_hwid = str(payload["h"]).strip()
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if licensed_hwid != hardware_id.strip():
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return LicenseStatus(False, "HWID incompativel", hardware_id, 0)
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expires_at = datetime.strptime(payload["e"], "%Y-%m-%d")
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days_remaining = (expires_at.date() - datetime.now().date()).days
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if days_remaining < 0:
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return LicenseStatus(False, "Licenca expirada", hardware_id, 0)
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return LicenseStatus(True, f"Licenciado para {payload['c']}", hardware_id, days_remaining)
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except (InvalidToken, KeyError, ValueError, OSError, json.JSONDecodeError) as exc:
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LOGGER.warning("Falha ao verificar licenca: %s", exc)
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return LicenseStatus(False, "Serial invalido", hardware_id, 0)
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def install(self, serial: str) -> LicenseStatus:
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cleaned = serial.strip()
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if not cleaned:
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raise ValueError("Serial vazio.")
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try:
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payload = json.loads(self.fernet.decrypt(cleaned.encode("utf-8")).decode("utf-8"))
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licensed_hwid = str(payload["h"]).strip()
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hardware_id = get_hardware_id().strip()
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if licensed_hwid != hardware_id:
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raise ValueError("HWID incompativel com este equipamento.")
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expires_at = datetime.strptime(str(payload["e"]).strip(), "%Y-%m-%d")
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days_remaining = (expires_at.date() - datetime.now().date()).days
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if days_remaining < 0:
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raise ValueError("Licenca expirada.")
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except InvalidToken:
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raise ValueError("Serial invalido.") from None
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except (KeyError, json.JSONDecodeError, OSError, ValueError):
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raise
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write_private_text(self.license_path, cleaned)
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return LicenseStatus(True, f"Licenciado para {payload['c']}", hardware_id, days_remaining)
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@dataclass
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class MonitorStatus:
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running: bool
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iteration: int
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last_cycle_started_at: str | None
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last_cycle_completed_at: str | None
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last_error: str | None
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last_license_message: str | None
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class RuntimeState:
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def __init__(self, base_dir: Path, default_password: str):
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self.lock = threading.RLock()
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self.config_store = JsonStore(base_dir / "config_nodes.json")
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self.map_store = JsonStore(base_dir / "mapa_dispositivos.json")
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self.config = normalize_config(self.config_store.load(build_default_config(default_password)), default_password)
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self.mapa_dispositivos = self.map_store.load({})
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self.dados_tempo_real: Dict[str, dict] = {}
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self.status_nodes_web: Dict[str, str] = {}
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self.restart_event = threading.Event()
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self.stop_event = threading.Event()
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self.monitor_status = MonitorStatus(
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running=False,
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iteration=0,
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last_cycle_started_at=None,
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last_cycle_completed_at=None,
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last_error=None,
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last_license_message=None,
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)
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self.save_config()
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def snapshot(self) -> Tuple[dict, dict, dict, dict]:
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with self.lock:
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return (
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dict(self.config),
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dict(self.mapa_dispositivos),
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dict(self.dados_tempo_real),
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dict(self.status_nodes_web),
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)
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def get_monitor_status(self) -> MonitorStatus:
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with self.lock:
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return MonitorStatus(**self.monitor_status.__dict__)
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def save_config(self) -> None:
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with self.lock:
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self.config_store.save(self.config)
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def trigger_restart(self) -> None:
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self.restart_event.set()
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def stop(self) -> None:
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self.stop_event.set()
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self.restart_event.set()
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def consume_restart(self) -> bool:
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if self.restart_event.is_set():
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self.restart_event.clear()
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return True
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return False
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def authenticate(self, username: str, password: str) -> bool:
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with self.lock:
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if username != self.config["web_user"]:
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return False
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return check_password_hash(self.config["web_password_hash"], password)
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def update_credentials(self, username: str, password: str) -> None:
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normalized_username, normalized_password = validate_login_payload(username, password)
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with self.lock:
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self.config["web_user"] = normalized_username
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self.config["web_password_hash"] = generate_password_hash(normalized_password)
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self.config_store.save(self.config)
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def update_config(self, zabbix_server: str, hostname_zabbix: str, nodes: List[dict]) -> None:
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with self.lock:
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self.config["zabbix_server"] = zabbix_server.strip()
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self.config["hostname_zabbix"] = hostname_zabbix.strip()
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self.config["nodes"] = nodes
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active_prefixes = [f"{node['ip']}_{node['unit']}_" for node in nodes]
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self.mapa_dispositivos = {
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key: value
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for key, value in self.mapa_dispositivos.items()
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if any(key.startswith(prefix) for prefix in active_prefixes)
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}
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self.config_store.save(self.config)
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self.map_store.save(self.mapa_dispositivos)
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self.restart_event.set()
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def rename_device(self, address_key: str, label: str) -> bool:
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with self.lock:
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if address_key not in self.mapa_dispositivos:
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return False
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self.mapa_dispositivos[address_key]["label"] = label.strip()
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self.map_store.save(self.mapa_dispositivos)
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self.restart_event.set()
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return True
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def replace_node_devices(self, node: dict, discovered_map: dict) -> None:
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prefix = f"{node['ip']}_{node['unit']}_"
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with self.lock:
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self.mapa_dispositivos = {
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key: value for key, value in self.mapa_dispositivos.items() if not key.startswith(prefix)
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}
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self.mapa_dispositivos.update(discovered_map)
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self.map_store.save(self.mapa_dispositivos)
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self.restart_event.set()
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def update_monitor_status(
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self,
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*,
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running: bool | None = None,
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iteration: int | None = None,
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last_cycle_started_at: str | None = None,
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last_cycle_completed_at: str | None = None,
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last_error: str | None = None,
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last_license_message: str | None = None,
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) -> None:
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with self.lock:
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if running is not None:
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self.monitor_status.running = running
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if iteration is not None:
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self.monitor_status.iteration = iteration
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if last_cycle_started_at is not None:
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self.monitor_status.last_cycle_started_at = last_cycle_started_at
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if last_cycle_completed_at is not None:
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self.monitor_status.last_cycle_completed_at = last_cycle_completed_at
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if last_error is not None:
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self.monitor_status.last_error = last_error
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if last_license_message is not None:
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self.monitor_status.last_license_message = last_license_message
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class MonitorEngine:
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def __init__(self, runtime_state: RuntimeState, license_service: LicenseService):
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self.runtime_state = runtime_state
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self.license_service = license_service
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self.thread: threading.Thread | None = None
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def start(self) -> None:
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if self.thread and self.thread.is_alive():
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return
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self.thread = threading.Thread(target=self.run, daemon=True, name="monitor-engine")
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self.thread.start()
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def stop(self, timeout: float = 5.0) -> None:
|
|
self.runtime_state.stop()
|
|
if self.thread and self.thread.is_alive():
|
|
self.thread.join(timeout=timeout)
|
|
|
|
def run(self) -> None:
|
|
self.runtime_state.update_monitor_status(running=True, last_error="")
|
|
iteration = 0
|
|
while not self.runtime_state.stop_event.is_set():
|
|
iteration += 1
|
|
self.runtime_state.update_monitor_status(
|
|
iteration=iteration,
|
|
last_cycle_started_at=datetime.now().isoformat(timespec="seconds"),
|
|
last_error="",
|
|
)
|
|
license_status = self.license_service.verify()
|
|
self.runtime_state.update_monitor_status(last_license_message=license_status.message)
|
|
if not license_status.valid:
|
|
with self.runtime_state.lock:
|
|
self.runtime_state.status_nodes_web = {"SISTEMA": "BLOQUEADO"}
|
|
self.runtime_state.dados_tempo_real = {}
|
|
self.runtime_state.update_monitor_status(
|
|
last_cycle_completed_at=datetime.now().isoformat(timespec="seconds"),
|
|
)
|
|
self.runtime_state.stop_event.wait(RETRY_INTERVAL_SECONDS)
|
|
continue
|
|
|
|
self.runtime_state.consume_restart()
|
|
config, device_map, _, _ = self.runtime_state.snapshot()
|
|
hostname = config.get("hostname_zabbix", "").strip()
|
|
sender = self._build_sender(config.get("zabbix_server", "").strip())
|
|
|
|
self._send_discovery(sender, hostname, config.get("nodes", []), device_map)
|
|
|
|
while not self.runtime_state.stop_event.is_set():
|
|
if self.runtime_state.consume_restart():
|
|
break
|
|
self._poll_once(sender, hostname)
|
|
self.runtime_state.update_monitor_status(
|
|
last_cycle_completed_at=datetime.now().isoformat(timespec="seconds"),
|
|
)
|
|
self.runtime_state.stop_event.wait(POLL_INTERVAL_SECONDS)
|
|
self.runtime_state.update_monitor_status(running=False)
|
|
|
|
def _build_sender(self, server: str):
|
|
if not server:
|
|
return None
|
|
try:
|
|
return Sender(server=server)
|
|
except Exception as exc:
|
|
LOGGER.warning("Nao foi possivel iniciar sender do Zabbix: %s", exc)
|
|
return None
|
|
|
|
def _send_discovery(self, sender, hostname: str, nodes: List[dict], device_map: dict) -> None:
|
|
if not sender or not hostname or not device_map:
|
|
return
|
|
|
|
lld = {"data": []}
|
|
for info in device_map.values():
|
|
lld["data"].append({"{#PONTO_LABEL}": info["label"]})
|
|
for node in nodes:
|
|
lld["data"].append({"{#NODE_NOME}": node["nome"]})
|
|
|
|
try:
|
|
sender.send([ItemValue(hostname, "notifier.discovery", json.dumps(lld, ensure_ascii=False))])
|
|
except Exception as exc:
|
|
LOGGER.warning("Falha ao enviar discovery ao Zabbix: %s", exc)
|
|
|
|
def _poll_once(self, sender, hostname: str) -> None:
|
|
config, device_map, _, _ = self.runtime_state.snapshot()
|
|
nodes = config.get("nodes", [])
|
|
metrics: List[ItemValue] = []
|
|
latest_data: Dict[str, dict] = {}
|
|
node_statuses: Dict[str, str] = {}
|
|
|
|
for node in nodes:
|
|
node_metrics, node_data, node_status = self._poll_node(node, device_map, hostname)
|
|
metrics.extend(node_metrics)
|
|
latest_data.update(node_data)
|
|
node_statuses[node["nome"]] = node_status
|
|
|
|
with self.runtime_state.lock:
|
|
self.runtime_state.dados_tempo_real.update(latest_data)
|
|
self.runtime_state.status_nodes_web = node_statuses
|
|
|
|
if sender and hostname and metrics:
|
|
try:
|
|
sender.send(metrics)
|
|
except Exception as exc:
|
|
LOGGER.warning("Falha ao enviar metricas ao Zabbix: %s", exc)
|
|
self.runtime_state.update_monitor_status(last_error=str(exc))
|
|
|
|
def _poll_node(self, node: dict, device_map: dict, hostname: str):
|
|
client = ModbusClient(
|
|
host=node["ip"],
|
|
port=node.get("port", DEFAULT_MODBUS_PORT),
|
|
unit_id=node["unit"],
|
|
auto_open=True,
|
|
timeout=1,
|
|
)
|
|
node_metrics: List[ItemValue] = []
|
|
node_data: Dict[str, dict] = {}
|
|
node_status = "Offline"
|
|
|
|
try:
|
|
alive = client.read_holding_registers(1, 1)
|
|
status_conn = 1 if alive is not None else 0
|
|
node_status = "Online" if status_conn else "Offline"
|
|
|
|
if hostname:
|
|
node_metrics.append(ItemValue(hostname, f"node.status[{node['nome']}]", status_conn))
|
|
|
|
if not status_conn:
|
|
return node_metrics, node_data, node_status
|
|
|
|
node_keys = [
|
|
key for key in device_map.keys() if key.startswith(f"{node['ip']}_{node['unit']}_")
|
|
]
|
|
node_addresses = [int(key.rsplit("_", 1)[-1]) for key in node_keys]
|
|
|
|
for start, end in contiguous_ranges(node_addresses):
|
|
registers = client.read_holding_registers(start, end - start + 1)
|
|
if not registers:
|
|
continue
|
|
for offset, value in enumerate(registers):
|
|
address = start + offset
|
|
key = f"{node['ip']}_{node['unit']}_{address}"
|
|
if key not in device_map:
|
|
continue
|
|
label = device_map[key]["label"]
|
|
node_data[key] = {
|
|
"label": label,
|
|
"status": value,
|
|
"node": node["nome"],
|
|
"last": time.strftime("%H:%M:%S"),
|
|
}
|
|
if hostname:
|
|
node_metrics.append(ItemValue(hostname, f"notifier.status[{label}]", value & 0xFF))
|
|
node_metrics.append(ItemValue(hostname, f"notifier.comm[{label}]", (value >> 8) & 0xFF))
|
|
except Exception as exc:
|
|
LOGGER.warning("Falha ao consultar node %s (%s): %s", node["nome"], node["ip"], exc)
|
|
self.runtime_state.update_monitor_status(last_error=f"{node['nome']}: {exc}")
|
|
finally:
|
|
client.close()
|
|
|
|
return node_metrics, node_data, node_status
|