diff options
Diffstat (limited to 'src/server/daemon')
4 files changed, 0 insertions, 121 deletions
diff --git a/src/server/daemon/current_daemon_pid.txt b/src/server/daemon/current_daemon_pid.txt deleted file mode 100644 index f3cd0298c..000000000 --- a/src/server/daemon/current_daemon_pid.txt +++ /dev/null @@ -1 +0,0 @@ -9626
\ No newline at end of file diff --git a/src/server/daemon/persistence_daemon.ts b/src/server/daemon/persistence_daemon.ts deleted file mode 100644 index 099c7898c..000000000 --- a/src/server/daemon/persistence_daemon.ts +++ /dev/null @@ -1,117 +0,0 @@ -import * as request from "request-promise"; -import { log_execution, pathFromRoot } from "../ActionUtilities"; -import { red, yellow, cyan, green, Color } from "colors"; -import * as nodemailer from "nodemailer"; -import { MailOptions } from "nodemailer/lib/json-transport"; -import { writeFileSync, appendFileSync, createWriteStream, existsSync } from "fs"; -import { resolve } from 'path'; -import { ChildProcess } from "child_process"; -import { ProcessManager } from "../ProcessManager"; - -console.log(yellow("Initializing daemon...")); - -process.on('SIGINT', () => current_backup?.kill("SIGTERM")); - -const crashLogPath = resolve(__dirname, `./session_crashes_${timestamp()}.log`); -function addLogEntry(message: string, color: Color) { - const formatted = color(`${message} ${timestamp()}.`); - console.log(formatted); - appendFileSync(crashLogPath, `${formatted}\n`); -} - -const LOCATION = "http://localhost"; -const recipient = "samuel_wilkins@brown.edu"; -let restarting = false; - -const frequency = 10; -const { pid } = process; -writeFileSync(resolve(__dirname, "./current_daemon_pid.txt"), pid); -console.log(cyan(`${pid} written to ./current_daemon_pid.txt`)); - -function timestamp() { - return `@ ${new Date().toISOString()}`; -} - -let current_backup: ChildProcess | undefined = undefined; - -async function listen() { - console.log(yellow(`Beginning to poll server heartbeat every ${frequency} seconds...\n`)); - if (!LOCATION) { - console.log(red("No location specified for persistence daemon. Please include as a command line environment variable or in a .env file.")); - process.exit(0); - } - const heartbeat = `${LOCATION}:1050/serverHeartbeat`; - // if this is on our remote server, the server must be run in release mode - // const suffix = LOCATION.includes("localhost") ? "" : "-release"; - setInterval(async () => { - let error: any; - try { - await request.get(heartbeat); - if (restarting) { - addLogEntry("Backup server successfully restarted", green); - } - restarting = false; - } catch (e) { - error = e; - } finally { - if (error) { - if (!restarting) { - restarting = true; - addLogEntry("Detected a server crash", red); - current_backup?.kill(); - await log_execution({ - startMessage: "Sending crash notification email", - endMessage: ({ error, result }) => { - const success = error === null && result === true; - return `${(success ? `Notification successfully sent to` : `Failed to notify`)} ${recipient} ${timestamp()}`; - }, - action: async () => notify(error || "Hmm, no error to report..."), - color: cyan - }); - current_backup = await log_execution({ - startMessage: "Initiating server restart", - endMessage: ({ result, error }) => { - const success = error === null && result !== undefined; - return success ? "Child process spawned.." : `An error occurred while attempting to restart the server:\n${error}`; - }, - action: () => ProcessManager.spawn_detached('npm', ['run', 'start-spawn']), - color: green - }); - writeFileSync(pathFromRoot("./logs/current_server_pid.txt"), `${current_backup?.pid ?? -1} created ${timestamp()}\n`); - } else { - console.log(yellow(`Callback ignored because restarting already initiated ${timestamp()}`)); - } - } - } - }, 1000 * 10); -} - -function emailText(error: any) { - return [ - `Hey ${recipient.split("@")[0]},`, - "You, as a Dash Administrator, are being notified of a server crash event. Here's what we know:", - `Location: ${LOCATION}\nError: ${error}`, - "The server should already be restarting itself, but if you're concerned, use the Remote Desktop Connection to monitor progress." - ].join("\n\n"); -} - -async function notify(error: any) { - const smtpTransport = nodemailer.createTransport({ - service: 'Gmail', - auth: { - user: 'brownptcdash@gmail.com', - pass: 'browngfx1' - } - }); - const mailOptions = { - to: recipient, - from: 'brownptcdash@gmail.com', - subject: 'Dash Server Crash', - text: emailText(error) - } as MailOptions; - return new Promise<boolean>(resolve => { - smtpTransport.sendMail(mailOptions, (dispatchError: Error | null) => resolve(dispatchError === null)); - }); -} - -listen();
\ No newline at end of file diff --git a/src/server/daemon/session_crashes_@ 2019-12-11T08:31:56.281Z.log b/src/server/daemon/session_crashes_@ 2019-12-11T08:31:56.281Z.log deleted file mode 100644 index 32b7810ea..000000000 --- a/src/server/daemon/session_crashes_@ 2019-12-11T08:31:56.281Z.log +++ /dev/null @@ -1 +0,0 @@ -Detected a server crash @ 2019-12-11T08:32:36.317Z diff --git a/src/server/daemon/session_crashes_@ 2019-12-11T08:43:46.454Z.log b/src/server/daemon/session_crashes_@ 2019-12-11T08:43:46.454Z.log deleted file mode 100644 index ebb6843c2..000000000 --- a/src/server/daemon/session_crashes_@ 2019-12-11T08:43:46.454Z.log +++ /dev/null @@ -1,2 +0,0 @@ -[31mDetected a server crash @ 2019-12-11T08:44:26.494Z.[39m -[32mBackup server successfully restarted @ 2019-12-11T08:45:33.644Z.[39m |