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require('dotenv').config()
const io = require('socket.io-client')
const zerorpc = require('zerorpc')
const Readable = require('stream').Readable
const runner = require('./runner')
let remote, relay, rpc, rpc_connected = false
remote = io.connect(process.env.SOCKETIO_REMOTE)
remote.on('cmd', (data) => {
console.log('cmd data', data)
if (! data.cmd) return console.log('malformed param...?')
console.log('got', data.cmd)
switch (data.cmd) {
case 'set_param':
if (! data.payload) return
rpc.invoke(data.cmd, data.payload.key, data.payload.value, (err, res, more) => {
console.log('sent param, got response', res)
})
break
case 'get_params':
case 'get_last_frame':
rpc.invoke(data.cmd, (err, res, more) => {
console.log('got params', res)
remote.emit('res', {
cmd: data.cmd,
res: res,
})
})
break
default:
rpc.invoke('send_command', data.cmd, data.payload || null, (err, res, more) => {
console.log('sent command', res)
remote.emit('res', {
cmd: data.cmd,
res: res,
})
})
break
}
})
remote.on('system', (data) => {
console.log('system:', data.cmd)
switch(data.cmd) {
case 'run_system_command':
runner.run_system_command(data.payload, (error, stdout, stderr) => {
remote.emit('system_res', {
type: 'command_output',
cmd: data.payload,
error, stdout, stderr
})
})
break
case 'get_status':
remote.emit('system_res', {
type: 'relay_status',
rpc_connected: rpc_connected,
runner: runner.status(),
})
break
default:
remote.emit('system_res', { error: 'unknown system command' })
break
}
})
rpc = new zerorpc.Client()
rpc.connect('tcp://127.0.0.1:' + process.env.RPC_PORT)
rpc.on('error', function(error) {
console.error('RPC server error:', error)
})
console.log('RPC listening on port ' + process.env.RPC_PORT)
relay = new zerorpc.Server({
// Called when the worker starts up and is ready to receive params.
connected: function(msg, reply) {
reply()
console.log('got connect from ' + msg)
remote.emit('system_res', {
type: 'rpc_connected',
runner: runner.status(),
})
rpc_connected = true
return true
},
send_frame: function(fn, meta, frame, reply) {
reply()
// console.log('got frame, ' + frame.length + ' bytes')
remote.emit('frame', { fn: fn, meta: meta, frame: frame })
},
send_status: function(key, value, reply) {
reply()
remote.emit('status', { key: key, value: value })
},
disconnecting: function(){
reply()
remote.emit('system_res', {
type: 'rpc_disconnected',
})
rpc_connected = false
return true
},
})
relay.on('error', function(error) {
console.error('Relay server error:', error)
})
relay.bind('tcp://0.0.0.0:' + process.env.RELAY_PORT)
console.log('Relay listening on port ' + process.env.RELAY_PORT)
rpc.invoke('ping', (err, res, more) => {
console.log('sent ping', res)
if (res === 'pong') {
remote.emit('system_res', {
type: 'rpc_connected',
runner: runner.status()
})
rpc_connected = true
} else {
remote.emit('system_res', {
type: 'rpc_disconnected',
})
rpc_connected = false
}
})
module.exports = { relay: relay, remote: remote, }
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