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node-red/red/server.js
Nicholas O'Leary 95bef6b6ca Abstract all file-system operations
Stage 1 of  #62
2013-11-10 00:05:58 +00:00

98 lines
3.1 KiB
JavaScript

/**
* Copyright 2013 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 util = require('util');
var createUI = require("./ui");
var redNodes = require("./nodes");
var app = null;
var server = null;
function createServer(_server,settings) {
server = _server;
storage = require("./storage").init(settings);
app = createUI(settings);
flowfile = settings.flowFile || 'flows_'+require('os').hostname()+'.json';
app.get("/nodes",function(req,res) {
res.writeHead(200, {'Content-Type': 'text/plain'});
res.write(redNodes.getNodeConfigs());
res.end();
});
app.get("/flows",function(req,res) {
res.writeHead(200, {'Content-Type': 'text/plain'});
res.write(JSON.stringify(redNodes.getConfig()));
res.end();
});
app.post("/flows",function(req,res) {
var fullBody = '';
req.on('data', function(chunk) {
fullBody += chunk.toString();
});
req.on('end', function() {
res.writeHead(204, {'Content-Type': 'text/plain'});
res.end();
var flows = JSON.parse(fullBody);
storage.saveFlows(flows).then(function() {
redNodes.setConfig(flows);
}).otherwise(function(err) {
util.log("[red] Error saving flows : "+err);
});
});
});
}
function start() {
console.log("\nWelcome to Node-RED\n===================\n");
util.log("[red] Loading palette nodes");
util.log("------------------------------------------");
redNodes.load();
util.log("");
util.log('You may ignore any errors above here if they are for');
util.log('nodes you are not using. The nodes indicated will not');
util.log('be available in the main palette until any missing');
util.log('modules are installed, typically by running:');
util.log(' npm install {the module name}');
util.log('or any other errors are resolved');
util.log("------------------------------------------");
storage.getFlows().then(function(flows) {
if (flows.length > 0) {
redNodes.setConfig(flows);
}
}).otherwise(function(err) {
util.log("[red] Error loading flows : "+err);
});
}
function stop() {
redNodes.stopFlows();
}
module.exports = {
init: createServer,
start: start,
stop: stop
}
module.exports.__defineGetter__("app", function() { return app });
module.exports.__defineGetter__("server", function() { return server });