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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 | 13x 13x 4x 4x 4x 4x 4x 5x 5x 5x 1x | /**
* Responsible for emitting a message over the network
*/
class Emitter
{
/**
* @param {Logger} log
* @param {PayloadFactory} payloadFactory
*/
constructor(log, payloadFactory)
{
this.log = log
this.payloadFactory = payloadFactory
}
/**
* @param {net.Socket} socket
* @param {events} event
* @param {*} data
*/
async emit(socket, event, data)
{
this.log.info('emitting event:', event, 'data:', data)
try
{
const payload = this.payloadFactory.create(event, data).toBuffer()
await this.writeBufferToSocket(socket, payload)
}
catch(error)
{
this.log.info('error emitting:', event, data, error)
throw error
}
this.log.info('emitted:', event, data)
}
/**
* @protected
* @param {net.Socket} socket
* @param {Buffer} buffer
*/
writeBufferToSocket(socket, buffer)
{
return new Promise(
(accept, reject) =>
socket.write(
buffer,
(error) => error
? reject(error)
: accept()))
}
}
module.exports = Emitter
|