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node-red/red/server.js

153 lines
5.2 KiB
JavaScript

/**
* Copyright 2013, 2015 IBM Corp.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
**/
var express = require('express');
var when = require('when');
var redNodes = require("./nodes");
var comms = require("./comms");
var storage = require("./storage");
var log = require("./log");
var i18n = require("./i18n");
var app = null;
var nodeApp = null;
var server = null;
var settings = null;
var runtimeMetricInterval = null;
function init(_server,_settings) {
server = _server;
settings = _settings;
comms.init(_server,_settings);
nodeApp = express();
app = express();
}
function start() {
return i18n.init()
.then(function() { return storage.init(settings)})
.then(function() { return settings.load(storage)})
.then(function() {
if (settings.httpAdminRoot !== false) {
require("./api").init(app,storage);
}
if (log.metric()) {
runtimeMetricInterval = setInterval(function() {
reportMetrics();
}, settings.runtimeMetricInterval||15000);
}
console.log("\n\n"+log._("runtime.welcome")+"\n===================\n");
if (settings.version) {
log.info(log._("runtime.version",{component:"Node-RED",version:"v"+settings.version}));
}
log.info(log._("runtime.version",{component:"Node.js ",version:process.version}));
log.info(log._("server.loading"));
redNodes.init(settings,storage);
return redNodes.load().then(function() {
var i;
var nodeErrors = redNodes.getNodeList(function(n) { return n.err!=null;});
var nodeMissing = redNodes.getNodeList(function(n) { return n.module && n.enabled && !n.loaded && !n.err;});
if (nodeErrors.length > 0) {
log.warn("------------------------------------------");
if (settings.verbose) {
for (i=0;i<nodeErrors.length;i+=1) {
log.warn("["+nodeErrors[i].name+"] "+nodeErrors[i].err);
}
} else {
log.warn(log._("server.errors",{count:nodeErrors.length}));
log.warn(log._("server.errors-help"));
}
log.warn("------------------------------------------");
}
if (nodeMissing.length > 0) {
log.warn(log._("server.missing-modules"));
var missingModules = {};
for (i=0;i<nodeMissing.length;i++) {
var missing = nodeMissing[i];
missingModules[missing.module] = (missingModules[missing.module]||[]).concat(missing.types);
}
var promises = [];
for (i in missingModules) {
if (missingModules.hasOwnProperty(i)) {
log.warn(" - "+i+": "+missingModules[i].join(", "));
if (settings.autoInstallModules && i != "node-red") {
redNodes.installModule(i).otherwise(function(err) {
// Error already reported. Need the otherwise handler
// to stop the error propagating any further
});
}
}
}
if (!settings.autoInstallModules) {
log.info(log._("server.removing-modules"));
redNodes.cleanModuleList();
}
}
log.info(log._("runtime.paths.settings",{path:settings.settingsFile}));
redNodes.loadFlows().then(redNodes.startFlows);
comms.start();
}).otherwise(function(err) {
console.log(err);
});
});
}
function reportMetrics() {
var memUsage = process.memoryUsage();
log.log({
level: log.METRIC,
event: "runtime.memory.rss",
value: memUsage.rss
});
log.log({
level: log.METRIC,
event: "runtime.memory.heapTotal",
value: memUsage.heapTotal
});
log.log({
level: log.METRIC,
event: "runtime.memory.heapUsed",
value: memUsage.heapUsed
});
}
function stop() {
if (runtimeMetricInterval) {
clearInterval(runtimeMetricInterval);
runtimeMetricInterval = null;
}
redNodes.stopFlows();
comms.stop();
}
var serverAPI = module.exports = {
init: init,
start: start,
stop: stop,
get app() { return app },
get nodeApp() { return nodeApp },
get server() { return server }
}