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node-red/red/api/nodes.js

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2014-11-04 12:34:49 +01:00
/**
* Copyright 2014 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 fs = require("fs");
var path = require("path");
var when = require('when');
var util = require('util');
var events = require("../events");
var redNodes = require("../nodes");
var comms = require("../comms");
var server = require("../server");
var settings = require("../settings");
module.exports = {
getAll: function(req,res) {
if (req.get("accept") == "application/json") {
res.json(redNodes.getNodeList());
} else {
res.send(redNodes.getNodeConfigs());
}
},
post: function(req,res) {
if (!settings.available()) {
res.send(400,new Error("Settings unavailable").toString());
return;
}
var node = req.body;
var promise;
if (node.file) {
promise = redNodes.addNode(node.file).then(server.reportAddedModules);
} else if (node.module) {
var module = redNodes.getNodeModuleInfo(node.module);
if (module) {
res.send(400,"Module already loaded");
return;
}
promise = server.installModule(node.module);
} else {
res.send(400,"Invalid request");
return;
}
promise.then(function(info) {
res.json(info);
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}).otherwise(function(err) {
if (err.code === 404) {
res.send(404);
} else {
res.send(400,err.toString());
}
});
},
delete: function(req,res) {
if (!settings.available()) {
res.send(400,new Error("Settings unavailable").toString());
return;
}
var id = req.params.id;
var removedNodes = [];
try {
var node = redNodes.getNodeInfo(id);
var promise = null;
if (!node) {
var module = redNodes.getNodeModuleInfo(id);
if (!module) {
res.send(404);
return;
} else {
promise = server.uninstallModule(id);
}
} else {
promise = when.resolve([redNodes.removeNode(id)]).then(server.reportRemovedModules);
}
promise.then(function(removedNodes) {
res.json(removedNodes);
}).otherwise(function(err) {
res.send(400,err.toString());
});
} catch(err) {
res.send(400,err.toString());
}
},
get: function(req,res) {
var id = req.params.id;
var result = null;
if (req.get("accept") == "application/json") {
result = redNodes.getNodeInfo(id);
} else {
result = redNodes.getNodeConfig(id);
}
if (result) {
res.send(result);
} else {
res.send(404);
}
},
put: function(req,res) {
if (!settings.available()) {
res.send(400,new Error("Settings unavailable").toString());
return;
}
var body = req.body;
if (!body.hasOwnProperty("enabled")) {
res.send(400,"Invalid request");
return;
}
try {
var info;
var id = req.params.id;
var node = redNodes.getNodeInfo(id);
if (!node) {
res.send(404);
} else if (!node.err && node.enabled === body.enabled) {
res.json(node);
} else {
if (body.enabled) {
info = redNodes.enableNode(id);
} else {
info = redNodes.disableNode(id);
}
if (info.enabled == body.enabled && !info.err) {
comms.publish("node/"+(body.enabled?"enabled":"disabled"),info,false);
util.log("[red] "+(body.enabled?"Enabled":"Disabled")+" node types:");
for (var i=0;i<info.types.length;i++) {
util.log("[red] - "+info.types[i]);
}
} else if (body.enabled && info.err) {
util.log("[red] Failed to enable node:");
util.log("[red] - "+info.name+" : "+info.err);
}
res.json(info);
}
} catch(err) {
res.send(400,err.toString());
}
}
}