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const ipc = require('node-ipc')
const DEFAULT_ID = process.env.VUE_CLI_IPC || 'vue-cli'
const DEFAULT_IDLE_TIMEOUT = 3000
const DEFAULT_OPTIONS = {
networkId: DEFAULT_ID,
autoConnect: true,
disconnectOnIdle: false,
idleTimeout: DEFAULT_IDLE_TIMEOUT,
namespaceOnProject: true
}
const PROJECT_ID = process.env.VUE_CLI_PROJECT_ID
exports.IpcMessenger = class IpcMessenger {
constructor (options = {}) {
options = Object.assign({}, DEFAULT_OPTIONS, options)
ipc.config.id = this.id = options.networkId
ipc.config.retry = 1500
ipc.config.silent = true
this.connected = false
this.connecting = false
this.disconnecting = false
this.queue = null
this.options = options
this.listeners = []
this.disconnectTimeout = 15000
this.idleTimer = null
// Prevent forced process exit
// (or else ipc messages may not be sent before kill)
process.exit = code => {
process.exitCode = code
}
this._reset()
}
checkConnection () {
if (!ipc.of[this.id]) {
this.connected = false
}
}
send (data, type = 'message') {
this.checkConnection()
if (this.connected) {
if (this.options.namespaceOnProject && PROJECT_ID) {
data = {
_projectId: PROJECT_ID,
_data: data
}
}
ipc.of[this.id].emit(type, data)
clearTimeout(this.idleTimer)
if (this.options.disconnectOnIdle) {
this.idleTimer = setTimeout(() => {
this.disconnect()
}, this.options.idleTimeout)
}
} else {
this.queue.push(data)
if (this.options.autoConnect && !this.connecting) {
this.connect()
}
}
}
connect () {
this.checkConnection()
if (this.connected || this.connecting) return
this.connecting = true
this.disconnecting = false
ipc.connectTo(this.id, () => {
this.connected = true
this.connecting = false
this.queue && this.queue.forEach(data => this.send(data))
this.queue = null
ipc.of[this.id].on('message', this._onMessage)
})
}
disconnect () {
this.checkConnection()
if (!this.connected || this.disconnecting) return
this.disconnecting = true
this.connecting = false
const ipcTimer = setTimeout(() => {
this._disconnect()
}, this.disconnectTimeout)
this.send({ done: true }, 'ack')
ipc.of[this.id].on('ack', data => {
if (data.ok) {
clearTimeout(ipcTimer)
this._disconnect()
}
})
}
on (listener) {
this.listeners.push(listener)
}
off (listener) {
const index = this.listeners.indexOf(listener)
if (index !== -1) this.listeners.splice(index, 1)
}
_reset () {
this.queue = []
this.connected = false
}
_disconnect () {
this.connected = false
this.disconnecting = false
ipc.disconnect(this.id)
this._reset()
}
_onMessage (data) {
this.listeners.forEach(fn => {
if (this.options.namespaceOnProject && data._projectId) {
if (data._projectId === PROJECT_ID) {
data = data._data
} else {
return
}
}
fn(data)
})
}
}