pm2-web/ui/components/UIHostList.js

A web based monitor for PM2

var EventEmitter = require("wildemitter"),
	util = require("util"),
	HostData = require("./../../common/HostData");

UIHostList = function(config, webSocketResponder) {
	EventEmitter.call(this);

	// populate host data when it's available
	webSocketResponder.once("hosts", function(list) {
		list.forEach(function(data) {
			this.add(data);
		}.bind(this));
	}.bind(this));

	// update host data occasionally
	webSocketResponder.on("systemData", function(data) {
		this.update(data);
	}.bind(this));

	// update host data occasionally
	webSocketResponder.on("log:info", function(host, pm_id, data) {
		var process = this._findByHostAndProcessId(host, pm_id);

		if(!process) {
			return;
		}

		process.log("info", data);
	}.bind(this));

	webSocketResponder.on("log:error", function(host, pm_id, data) {
		var process = this._findByHostAndProcessId(host, pm_id);

		if(!process) {
			return;
		}

		process.log("error", data);
	}.bind(this));

	webSocketResponder.on("process:exception", function(host, pm_id, message, stack) {
		var process = this._findByHostAndProcessId(host, pm_id);

		if(!process) {
			return;
		}

		process.throwing = true;

		setTimeout(function() {
			delete process.throwing;
		}, 1000);
	}.bind(this));

	this._config = config;
	this._hosts = {};
};
util.inherits(UIHostList, EventEmitter);

UIHostList.prototype.empty = function() {
	this._hosts = {};
};

UIHostList.prototype.add = function(data) {
	this._hosts[data.name] = new HostData(data, this._config);

	this.update(data);

	this.emit("newHost", data.name);
};

UIHostList.prototype.update = function(data) {
	if(!this._hosts[data.name]) {
		return this.add(data);
	}

	this._hosts[data.name].update(data);

	this.emit("update", data.name);
};

UIHostList.prototype.find = function(host) {
	var result = this._hosts[host];

	return result ? result : null;
};

UIHostList.prototype.hosts = function() {
	var result = Object.keys(this._hosts);

	return result ? result : null;
};

UIHostList.prototype._findByHostAndProcessId = function(host, pm_id) {
	var host = this.find(host);

	if(!host) {
		return;
	}

	return host.findProcessById(pm_id);
};

module.exports = UIHostList;