Agregar notificaciones y limite de acciones criticas
EMOTIONS-HUNTER
4 weeks ago
parent
8797cb4990
commit
7d8959f164
@ -0,0 +1,245 @@
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const fs = require('node:fs/promises');
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const path = require('node:path');
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const ROOT_DIRECTORY = path.join(__dirname, '..');
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const NOTIFICATION_CONFIG_FILE = process.env.NOTIFICATION_CONFIG_FILE
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? path.resolve(process.env.NOTIFICATION_CONFIG_FILE)
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: path.join(ROOT_DIRECTORY, 'config', 'notifications.json');
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const SEVERITY_RANK = {
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RECOVERY: 0,
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NORMAL: 0,
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WARNING: 1,
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OFFLINE: 2,
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CRITICAL: 3
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};
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const DEFAULT_NOTIFICATION_CONFIG = {
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enabled: false,
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minSeverity: 'CRITICAL',
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channels: {
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webhook: {
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enabled: false,
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url: '',
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headers: {}
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},
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telegram: {
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enabled: false,
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botToken: '',
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chatId: ''
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}
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}
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};
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function mergeNotificationConfig(config = {}) {
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return {
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enabled: config.enabled === true,
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minSeverity: SEVERITY_RANK[config.minSeverity] === undefined
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? DEFAULT_NOTIFICATION_CONFIG.minSeverity
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: config.minSeverity,
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channels: {
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webhook: {
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...DEFAULT_NOTIFICATION_CONFIG.channels.webhook,
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...(config.channels && config.channels.webhook)
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},
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telegram: {
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...DEFAULT_NOTIFICATION_CONFIG.channels.telegram,
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...(config.channels && config.channels.telegram)
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}
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}
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};
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}
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async function readNotificationConfig() {
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try {
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const rawConfig = await fs.readFile(NOTIFICATION_CONFIG_FILE, 'utf8');
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return mergeNotificationConfig(JSON.parse(rawConfig));
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} catch {
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return mergeNotificationConfig();
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}
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}
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function validateNotificationConfig(rawConfig) {
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const config = mergeNotificationConfig(rawConfig);
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if (SEVERITY_RANK[config.minSeverity] === undefined) {
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throw Object.assign(new Error('Severidad minima no valida.'), { status: 400 });
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}
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if (config.channels.webhook.enabled && !isValidHttpUrl(config.channels.webhook.url)) {
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throw Object.assign(new Error('URL de webhook no valida.'), { status: 400 });
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}
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if (config.channels.telegram.enabled) {
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if (!config.channels.telegram.botToken || !config.channels.telegram.chatId) {
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throw Object.assign(
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new Error('Telegram requiere botToken y chatId.'),
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{ status: 400 }
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);
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}
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}
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if (
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config.channels.webhook.headers &&
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(typeof config.channels.webhook.headers !== 'object' ||
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Array.isArray(config.channels.webhook.headers))
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) {
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throw Object.assign(new Error('Headers de webhook invalidos.'), { status: 400 });
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}
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return config;
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}
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async function writeNotificationConfig(rawConfig) {
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const config = validateNotificationConfig(rawConfig);
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await fs.mkdir(path.dirname(NOTIFICATION_CONFIG_FILE), { recursive: true });
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await fs.writeFile(
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NOTIFICATION_CONFIG_FILE,
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`${JSON.stringify(config, null, 4)}\n`,
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'utf8'
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);
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return config;
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}
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function redactNotificationConfig(config) {
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return {
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...config,
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channels: {
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webhook: {
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...config.channels.webhook,
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headers: Object.keys(config.channels.webhook.headers || {}).length > 0
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? '[configured]'
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: {}
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},
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telegram: {
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...config.channels.telegram,
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botToken: config.channels.telegram.botToken ? '[configured]' : ''
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}
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}
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};
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}
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function isValidHttpUrl(value) {
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try {
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const url = new URL(value);
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return ['http:', 'https:'].includes(url.protocol);
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} catch {
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return false;
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}
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}
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function shouldNotify(event, minSeverity) {
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const eventRank = SEVERITY_RANK[event.state] ?? 0;
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const minimumRank = SEVERITY_RANK[minSeverity] ?? SEVERITY_RANK.CRITICAL;
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return eventRank >= minimumRank;
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}
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function buildNotificationMessage(event) {
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const value = event.value === '' || event.value === null || event.value === undefined
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? 'N/A'
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: event.value;
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return [
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`Photobioreactor alarm: ${event.state}`,
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`Sensor: ${event.sensorId || event.sensor}`,
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`Value: ${value}`,
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`Message: ${event.message}`,
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`Time: ${event.timestamp}`
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].join('\n');
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}
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async function dispatchAlarmNotifications(events) {
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const config = await readNotificationConfig();
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if (!config.enabled || !Array.isArray(events) || events.length === 0) {
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return [];
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}
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const eligibleEvents = events.filter((event) =>
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shouldNotify(event, config.minSeverity)
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);
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const results = [];
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for (const event of eligibleEvents) {
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if (config.channels.webhook.enabled) {
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results.push(await sendSafely('webhook', event, () =>
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sendWebhookNotification(event, config.channels.webhook)
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));
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}
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if (config.channels.telegram.enabled) {
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results.push(await sendSafely('telegram', event, () =>
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sendTelegramNotification(event, config.channels.telegram)
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));
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}
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}
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return results;
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}
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async function sendSafely(channel, event, send) {
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try {
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await send();
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return {
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channel,
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sensorId: event.sensorId || event.sensor,
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state: event.state,
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success: true
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};
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} catch (error) {
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return {
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channel,
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sensorId: event.sensorId || event.sensor,
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state: event.state,
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success: false,
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error: error.message
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};
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}
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}
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async function sendWebhookNotification(event, channelConfig) {
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await postJson(channelConfig.url, {
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event,
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text: buildNotificationMessage(event)
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}, channelConfig.headers || {});
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}
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async function sendTelegramNotification(event, channelConfig) {
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const url = `https://api.telegram.org/bot${channelConfig.botToken}/sendMessage`;
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await postJson(url, {
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chat_id: channelConfig.chatId,
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text: buildNotificationMessage(event)
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});
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}
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async function postJson(url, payload, headers = {}) {
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if (typeof fetch !== 'function') {
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throw new Error('fetch no esta disponible en este runtime.');
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}
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const response = await fetch(url, {
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method: 'POST',
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headers: {
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'Content-Type': 'application/json',
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...headers
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},
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body: JSON.stringify(payload)
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});
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if (!response.ok) {
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throw new Error(`HTTP ${response.status}`);
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}
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}
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module.exports = {
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DEFAULT_NOTIFICATION_CONFIG,
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NOTIFICATION_CONFIG_FILE,
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dispatchAlarmNotifications,
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readNotificationConfig,
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redactNotificationConfig,
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shouldNotify,
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validateNotificationConfig,
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writeNotificationConfig
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};
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@ -0,0 +1,16 @@
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{
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"enabled": false,
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"minSeverity": "CRITICAL",
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"channels": {
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"webhook": {
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"enabled": false,
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"url": "",
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"headers": {}
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},
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"telegram": {
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"enabled": false,
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"botToken": "",
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"chatId": ""
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}
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}
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}
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