overleaf/services/real-time/app/coffee/HttpApiController.coffee

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WebsocketLoadBalancer = require "./WebsocketLoadBalancer"
DrainManager = require "./DrainManager"
logger = require "logger-sharelatex"
module.exports = HttpApiController =
sendMessage: (req, res, next) ->
logger.log {message: req.params.message}, "sending message"
if Array.isArray(req.body)
for payload in req.body
WebsocketLoadBalancer.emitToRoom req.params.project_id, req.params.message, payload
else
WebsocketLoadBalancer.emitToRoom req.params.project_id, req.params.message, req.body
res.send 204 # No content
startDrain: (req, res, next) ->
io = req.app.get("io")
rate = req.query.rate or "4"
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rate = parseFloat(rate) || 0
logger.log {rate}, "setting client drain rate"
DrainManager.startDrain io, rate
res.send 204