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feat: rework notification templating and add support for telegram (#5637)

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This commit is contained in:
Sergio Conde Gómez
2025-03-14 12:51:07 +01:00
committed by GitHub
parent fce824f5a8
commit 9857770cc7
10 changed files with 290 additions and 88 deletions
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47
server/notification-providers/notification-provider.js
View File

@@ -1,3 +1,6 @@
const { Liquid } = require("liquidjs");
const { DOWN } = require("../../src/util");
class NotificationProvider {
/**
@@ -49,6 +52,50 @@ class NotificationProvider {
}
}
/**
* Renders a message template with notification context
* @param {string} template the template
* @param {string} msg the message that will be included in the context
* @param {?object} monitorJSON Monitor details (For Up/Down/Cert-Expiry only)
* @param {?object} heartbeatJSON Heartbeat details (For Up/Down only)
* @returns {Promise<string>} rendered template
*/
async renderTemplate(template, msg, monitorJSON, heartbeatJSON) {
const engine = new Liquid();
const parsedTpl = engine.parse(template);
// Let's start with dummy values to simplify code
let monitorName = "Monitor Name not available";
let monitorHostnameOrURL = "testing.hostname";
if (monitorJSON !== null) {
monitorName = monitorJSON["name"];
monitorHostnameOrURL = this.extractAddress(monitorJSON);
}
let serviceStatus = "⚠️ Test";
if (heartbeatJSON !== null) {
serviceStatus = (heartbeatJSON["status"] === DOWN) ? "🔴 Down" : "✅ Up";
}
const context = {
// for v1 compatibility, to be removed in v3
"STATUS": serviceStatus,
"NAME": monitorName,
"HOSTNAME_OR_URL": monitorHostnameOrURL,
// variables which are officially supported
"status": serviceStatus,
"name": monitorName,
"hostnameOrURL": monitorHostnameOrURL,
monitorJSON,
heartbeatJSON,
msg,
};
return engine.render(parsedTpl, context);
}
/**
* Throws an error
* @param {any} error The error to throw

47
server/notification-providers/smtp.js
View File

@@ -1,7 +1,5 @@
const nodemailer = require("nodemailer");
const NotificationProvider = require("./notification-provider");
const { DOWN } = require("../../src/util");
const { Liquid } = require("liquidjs");
class SMTP extends NotificationProvider {
name = "smtp";
@@ -53,15 +51,11 @@ class SMTP extends NotificationProvider {
const customSubject = notification.customSubject?.trim() || "";
const customBody = notification.customBody?.trim() || "";
const context = this.generateContext(msg, monitorJSON, heartbeatJSON);
const engine = new Liquid();
if (customSubject !== "") {
const tpl = engine.parse(customSubject);
subject = await engine.render(tpl, context);
subject = await this.renderTemplate(customSubject, msg, monitorJSON, heartbeatJSON);
}
if (customBody !== "") {
const tpl = engine.parse(customBody);
body = await engine.render(tpl, context);
body = await this.renderTemplate(customBody, msg, monitorJSON, heartbeatJSON);
}
}
@@ -78,43 +72,6 @@ class SMTP extends NotificationProvider {
return okMsg;
}
/**
* Generate context for LiquidJS
* @param {string} msg the message that will be included in the context
* @param {?object} monitorJSON Monitor details (For Up/Down/Cert-Expiry only)
* @param {?object} heartbeatJSON Heartbeat details (For Up/Down only)
* @returns {{STATUS: string, status: string, HOSTNAME_OR_URL: string, hostnameOrUrl: string, NAME: string, name: string, monitorJSON: ?object, heartbeatJSON: ?object, msg: string}} the context
*/
generateContext(msg, monitorJSON, heartbeatJSON) {
// Let's start with dummy values to simplify code
let monitorName = "Monitor Name not available";
let monitorHostnameOrURL = "testing.hostname";
if (monitorJSON !== null) {
monitorName = monitorJSON["name"];
monitorHostnameOrURL = this.extractAddress(monitorJSON);
}
let serviceStatus = "⚠️ Test";
if (heartbeatJSON !== null) {
serviceStatus = (heartbeatJSON["status"] === DOWN) ? "🔴 Down" : "✅ Up";
}
return {
// for v1 compatibility, to be removed in v3
"STATUS": serviceStatus,
"NAME": monitorName,
"HOSTNAME_OR_URL": monitorHostnameOrURL,
// variables which are officially supported
"status": serviceStatus,
"name": monitorName,
"hostnameOrURL": monitorHostnameOrURL,
monitorJSON,
heartbeatJSON,
msg,
};
}
}
module.exports = SMTP;

8
server/notification-providers/telegram.js
View File

@@ -22,6 +22,14 @@ class Telegram extends NotificationProvider {
params.message_thread_id = notification.telegramMessageThreadID;
}
if (notification.telegramUseTemplate) {
params.text = await this.renderTemplate(notification.telegramTemplate, msg, monitorJSON, heartbeatJSON);
if (notification.telegramTemplateParseMode !== "plain") {
params.parse_mode = notification.telegramTemplateParseMode;
}
}
await axios.get(`${url}/bot${notification.telegramBotToken}/sendMessage`, {
params: params,
});

13
server/notification-providers/webhook.js
View File

@@ -1,7 +1,6 @@
const NotificationProvider = require("./notification-provider");
const axios = require("axios");
const FormData = require("form-data");
const { Liquid } = require("liquidjs");
class Webhook extends NotificationProvider {
name = "webhook";
@@ -28,17 +27,7 @@ class Webhook extends NotificationProvider {
config.headers = formData.getHeaders();
data = formData;
} else if (notification.webhookContentType === "custom") {
// Initialize LiquidJS and parse the custom Body Template
const engine = new Liquid();
const tpl = engine.parse(notification.webhookCustomBody);
// Insert templated values into Body
data = await engine.render(tpl,
{
msg,
heartbeatJSON,
monitorJSON
});
data = await this.renderTemplate(notification.webhookCustomBody, msg, monitorJSON, heartbeatJSON);
}
if (notification.webhookAdditionalHeaders) {