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3b22b585d0
The code scans the flows that are to be started and checks all of the necessary node types are registered; if not, it doesn't start the flows. An event is emitted when each node type is registered - allowing the server to track when all of the 'missing' node types register and then start the flows. This is a step towards adding node-types without restarting.
99 lines
3.3 KiB
JavaScript
99 lines
3.3 KiB
JavaScript
/**
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* Copyright 2013 IBM Corp.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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**/
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var fs = require('fs');
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var util = require('util');
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var createUI = require("./ui");
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var redNodes = require("./nodes");
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var host = require('os').hostname();
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var app = null;
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var server = null;
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function createServer(_server,settings) {
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server = _server;
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app = createUI(settings);
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//TODO: relocated user dir
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var rulesfile = process.argv[2] || 'flows_'+host+'.json';
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app.get("/nodes",function(req,res) {
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res.writeHead(200, {'Content-Type': 'text/plain'});
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res.write(redNodes.getNodeConfigs());
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res.end();
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});
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app.get("/flows",function(req,res) {
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fs.exists(rulesfile, function (exists) {
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if (exists) {
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res.sendfile(rulesfile);
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} else {
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res.writeHead(200, {'Content-Type': 'text/plain'});
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res.write("[]");
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res.end();
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}
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});
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});
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app.post("/flows",function(req,res) {
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var fullBody = '';
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req.on('data', function(chunk) {
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fullBody += chunk.toString();
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});
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req.on('end', function() {
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res.writeHead(204, {'Content-Type': 'text/plain'});
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res.end();
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fs.writeFile(rulesfile, fullBody, function(err) {
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if(err) {
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util.log(err);
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} else {
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redNodes.setConfig(JSON.parse(fullBody));
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}
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});
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});
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});
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console.log("\nWelcome to Node-RED\n===================\n");
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util.log("[red] Loading palette nodes");
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util.log("------------------------------------------");
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redNodes.load();
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util.log("");
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util.log('You may ignore any errors above here if they are for');
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util.log('nodes you are not using. The nodes indicated will not');
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util.log('be available in the main palette until any missing');
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util.log('modules are installed, typically by running:');
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util.log(' npm install {the module name}');
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util.log('or any other errors are resolved');
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util.log("------------------------------------------");
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fs.exists(rulesfile, function (exists) {
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if (exists) {
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util.log("[red] Loading workspace flow : "+rulesfile);
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fs.readFile(rulesfile,'utf8',function(err,data) {
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redNodes.setConfig(JSON.parse(data));
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});
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}
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});
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return app;
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}
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module.exports = {
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init: createServer
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}
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module.exports.__defineGetter__("app", function() { return app });
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module.exports.__defineGetter__("server", function() { return server });
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