From f5b438d587f9977025fa8323c846a9883b8685b0 Mon Sep 17 00:00:00 2001
From: John Livingston <git@john-livingston.fr>
Date: Wed, 14 Apr 2021 15:26:00 +0200
Subject: [PATCH] WIP. Spawning prosody.

---
 server/lib/prosody/config.ts |  4 ++-
 server/lib/prosody/ctl.ts    | 56 +++++++++++++++++++++++++++---------
 2 files changed, 46 insertions(+), 14 deletions(-)

diff --git a/server/lib/prosody/config.ts b/server/lib/prosody/config.ts
index b12b816a..fd18d1f7 100644
--- a/server/lib/prosody/config.ts
+++ b/server/lib/prosody/config.ts
@@ -40,6 +40,7 @@ async function getWorkingDir ({ peertubeHelpers, storageManager }: RegisterServe
 }
 
 interface ProsodyFilePaths {
+  dir: string
   pid: string
   error: string
   log: string
@@ -48,6 +49,7 @@ interface ProsodyFilePaths {
 async function getProsodyFilePaths (options: RegisterServerOptions): Promise<ProsodyFilePaths> {
   const dir = await getWorkingDir(options)
   return {
+    dir: dir,
     pid: path.resolve(dir, 'prosody.pid'),
     error: path.resolve(dir, 'prosody.err'),
     log: path.resolve(dir, 'prosody.log'),
@@ -82,7 +84,7 @@ modules_disabled = {
 
 allow_registration = false
 
-daemonize = true;
+daemonize = false;
 
 pidfile = "${paths.pid}";
 
diff --git a/server/lib/prosody/ctl.ts b/server/lib/prosody/ctl.ts
index a11c66a0..8caa9b45 100644
--- a/server/lib/prosody/ctl.ts
+++ b/server/lib/prosody/ctl.ts
@@ -1,23 +1,40 @@
-import { writeProsodyConfig } from './config'
+import { getProsodyFilePaths, writeProsodyConfig } from './config'
+import * as fs from 'fs'
+import * as util from 'util'
 
-interface ProsodyCorrectlyRunning {
+const exec = util.promisify(require('child_process').exec)
+
+interface ProsodyRunning {
   ok: boolean
   messages: string[]
 }
 
-/**
- * @param options
- * @returns true if prosody is running with up to date parameters. A string array of messages otherwise.
- */
-async function testProsodyCorrectlyRunning (options: RegisterServerOptions): Promise<ProsodyCorrectlyRunning> {
+async function testProsodyRunning (options: RegisterServerOptions): Promise<ProsodyRunning> {
   const { peertubeHelpers } = options
-  peertubeHelpers.logger.info('Checking if Prosody is correctly running')
-  const result: ProsodyCorrectlyRunning = {
+  peertubeHelpers.logger.info('Checking if Prosody is running')
+  const result: ProsodyRunning = {
     ok: false,
     messages: []
   }
 
-  result.messages.push('Pid file not found')
+  const filePaths = await getProsodyFilePaths(options)
+  try {
+    await fs.promises.access(filePaths.pid, fs.constants.R_OK)
+  } catch (error) {
+    result.messages.push(`Pid file ${filePaths.pid} not found`)
+    return result
+  }
+
+  result.ok = true
+  return result
+}
+
+async function testProsodyCorrectlyRunning (options: RegisterServerOptions): Promise<ProsodyRunning> {
+  const { peertubeHelpers } = options
+  peertubeHelpers.logger.info('Checking if Prosody is correctly running')
+  const result = await testProsodyRunning(options)
+  if (!result.ok) { return result }
+  result.ok = false // more tests to come
 
   // TODO
   peertubeHelpers.logger.error('testProsodyCorrectlyRunning not implemented yet.')
@@ -36,18 +53,30 @@ async function ensureProsodyRunning (options: RegisterServerOptions): Promise<vo
 
   const r = await testProsodyCorrectlyRunning(options)
   if (r.ok) {
+    r.messages.forEach(m => logger.debug(m))
     logger.info('Prosody is already running correctly')
     return
   }
-  logger.info('Prosody is not running correctly: ' + r.messages.join(', '))
+  logger.info('Prosody is not running correctly: ')
+  r.messages.forEach(m => logger.info(m))
+
   // Shutting down...
   await ensureProsodyNotRunning(options)
 
   // writing the configuration file
   await writeProsodyConfig(options)
 
-  // TODO: launch prosody
-  logger.error('ensureProsodyRunning not implemented yet.')
+  const filePaths = await getProsodyFilePaths(options)
+
+  // launch prosody
+  logger.info('Going to launch prosody...')
+  await exec('prosody', {
+    cwd: filePaths.dir,
+    env: {
+      ...process.env,
+      PROSODY_CONFIG: filePaths.config
+    }
+  })
 
   // TODO: listen for kill signal and kill prosody?
 }
@@ -61,6 +90,7 @@ async function ensureProsodyNotRunning (options: RegisterServerOptions): Promise
 }
 
 export {
+  testProsodyRunning,
   testProsodyCorrectlyRunning,
   ensureProsodyRunning,
   ensureProsodyNotRunning