100 lines
3.5 KiB
JavaScript
100 lines
3.5 KiB
JavaScript
const db_connection = require('../database/connection.js')
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// two bad headers
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const http_client = require('../../lib/http_client.js')
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const crypto = require('crypto')
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const plan_session = async (req, res, next) => {
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//var session_sheduled = database.collection('session_sheduled')
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//var sessions = await session_sheduled.find().toArray()
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//callback(response)
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}
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const create_session = async (req, res, next) => {
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//create?title=name&next_var=0
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try {
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const db = await db_connection.get_db()
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var servers = await db.collection('session_server').find({'title':req.query.title}).toArray()
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if (!servers.length)
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throw new Error('servers not found')
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// find free server and create session
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var session_active = db.collection('session_active')
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var free_server
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var servers_length = servers.length
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for (var i = 0; i < servers_length; ++i) {
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var sessions = await session_active.find({'server_id':servers[i].server_id}).toArray()
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if (servers[i].limit > sessions.length) {
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free_server = servers[i]
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break
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}
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}
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if (!free_server)
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throw new Error('session limit reached')
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var session_id = crypto.randomBytes(16).toString('hex')
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// create session on session server
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http_client.get({
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host: free_server.ip,
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port: free_server.port,
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path: `/session/create?title=${req.query.title}&session_id=${session_id}`
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}, async function(answer) {
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try {
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answer = JSON.parse(answer)
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//console.log(answer.method)
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if (!answer.link)
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throw new Error('session not created')
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// generate random code for session access
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var code = Math.floor(1000 + Math.random() * 9000)
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while ((await session_active.find({'code':code}).toArray()).length) {
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code = Math.floor(1000 + Math.random() * 9000)
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}
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// add session to database
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await session_active.insertOne({
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server_id:free_server.server_id,
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session_id:session_id,
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connection_link:answer.link,
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connection_code:code
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})
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// SHALL REMOVE CONNECTION CODE BECAUSE IN WEB WE DO NOT NEED IT
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res.json({msg:'SESSION_CREATED', link:answer.link, connection_code:code})
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} catch (e) {
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next(e)
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}
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}, function(err) {
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next(Error('session server not working'))
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})
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} catch (e) {
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next(e)
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}
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}
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const connect_session = async (req, res, next) => {
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try {
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const db = await db_connection.get_db()
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var session = await db.collection('session_active').findOne({connection_code:parseInt(req.query.connection_code)})
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if (!session)
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throw new Error('sessions not found')
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res.json({msg:'SESSION_DATA', link:session.connection_link, connection_code:session.connection_code})
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} catch (e) {
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next (e)
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}
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}
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const close_session = async (req, res, next) => {
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const db = await db_connection.get_db()
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await db.collection('session_active').deleteOne({session_id:req.query.session_id})
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res.json({msg:"SESSION_CLOSED", session_id:req.session_id})
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}
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module.exports = {
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plan_session,
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create_session,
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connect_session,
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close_session
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} |