/usr/local/lib/node_modules/pm2/node_modules/basic-ftp/dist
Edit: /usr/local/lib/node_modules/pm2/node_modules/basic-ftp/dist/ProgressTracker.js (2078B)
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.ProgressTracker = void 0;
/**
* Tracks progress of one socket data transfer at a time.
*/
class ProgressTracker {
constructor() {
this.bytesOverall = 0;
this.intervalMs = 500;
this.onStop = noop;
this.onHandle = noop;
}
/**
* Register a new handler for progress info. Use `undefined` to disable reporting.
*/
reportTo(onHandle = noop) {
this.onHandle = onHandle;
}
/**
* Start tracking transfer progress of a socket.
*
* @param socket The socket to observe.
* @param name A name associated with this progress tracking, e.g. a filename.
* @param type The type of the transfer, typically "upload" or "download".
*/
start(socket, name, type) {
let lastBytes = 0;
this.onStop = poll(this.intervalMs, () => {
const bytes = socket.bytesRead + socket.bytesWritten;
this.bytesOverall += bytes - lastBytes;
lastBytes = bytes;
this.onHandle({
name,
type,
bytes,
bytesOverall: this.bytesOverall
});
});
}
/**
* Stop tracking transfer progress.
*/
stop() {
this.onStop(false);
}
/**
* Call the progress handler one more time, then stop tracking.
*/
updateAndStop() {
this.onStop(true);
}
}
exports.ProgressTracker = ProgressTracker;
/**
* Starts calling a callback function at a regular interval. The first call will go out
* immediately. The function returns a function to stop the polling.
*/
function poll(intervalMs, updateFunc) {
const id = setInterval(updateFunc, intervalMs);
const stopFunc = (stopWithUpdate) => {
clearInterval(id);
if (stopWithUpdate) {
updateFunc();
}
// Prevent repeated calls to stop calling handler.
updateFunc = noop;
};
updateFunc();
return stopFunc;
}
function noop() { }