uptime-kuma/server/proxy.js

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const { R } = require("redbean-node");
class Proxy {
/**
* Saves and updates given proxy entity
*
* @param proxy
* @param proxyID
* @param userID
* @return {Promise<Bean>}
*/
static async save(proxy, proxyID, userID) {
let bean;
if (proxyID) {
bean = await R.findOne("proxy", " id = ? AND user_id = ? ", [proxyID, userID]);
if (!bean) {
throw new Error("proxy not found");
}
} else {
bean = R.dispense("proxy");
}
// Make sure given proxy protocol is supported
if (!["http", "https"].includes(proxy.protocol)) {
throw new Error(`Unsupported proxy protocol "${proxy.protocol}. Supported protocols are http and https."`);
}
// When proxy is default update deactivate old default proxy
if (proxy.default) {
await R.exec("UPDATE proxy SET `default` = 0 WHERE `default` = 1");
}
bean.user_id = userID;
bean.protocol = proxy.protocol;
bean.host = proxy.host;
bean.port = proxy.port;
bean.auth = proxy.auth;
bean.username = proxy.username;
bean.password = proxy.password;
bean.active = proxy.active || true;
bean.default = proxy.default || false;
await R.store(bean);
if (proxy.applyExisting) {
await applyProxyEveryMonitor(bean.id, userID);
}
return bean;
}
/**
* Deletes proxy with given id and removes it from monitors
*
* @param proxyID
* @param userID
* @return {Promise<void>}
*/
static async delete(proxyID, userID) {
const bean = await R.findOne("proxy", " id = ? AND user_id = ? ", [proxyID, userID]);
if (!bean) {
throw new Error("proxy not found");
}
// Delete removed proxy from monitors if exists
await R.exec("UPDATE monitor SET proxy_id = null WHERE proxy_id = ?", [proxyID]);
// Delete proxy from list
await R.trash(bean);
}
}
/**
* Applies given proxy id to monitors
*
* @param proxyID
* @param userID
* @return {Promise<void>}
*/
async function applyProxyEveryMonitor(proxyID, userID) {
// Find all monitors with id and proxy id
const monitors = await R.getAll("SELECT id, proxy_id FROM monitor WHERE user_id = ?", [userID]);
// Update proxy id not match with given proxy id
for (const monitor of monitors) {
if (monitor.proxy_id !== proxyID) {
await R.exec("UPDATE monitor SET proxy_id = ? WHERE id = ?", [proxyID, monitor.id]);
}
}
}
module.exports = {
Proxy,
};