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node-red/red/api/nodes.js

256 lines
7.9 KiB
JavaScript

/**
* 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(redNodes.getModuleInfo(node.module));
}).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 mod = req.params.mod;
try {
var promise = null;
var module = redNodes.getNodeModuleInfo(mod);
if (!module) {
res.send(404);
return;
} else {
promise = server.uninstallModule(mod);
}
promise.then(function() {
res.send(204);
}).otherwise(function(err) {
res.send(400,err.toString());
});
} catch(err) {
res.send(400,err.toString());
}
},
getSet: function(req,res) {
var id = req.params.mod + "/" + req.params.set;
var result = null;
if (req.get("accept") === "application/json") {
result = redNodes.getNodeInfo(id);
if (result) {
result.version = redNodes.getModuleVersion(req.params.mod);
}
} else {
result = redNodes.getNodeConfig(id);
}
if (result) {
res.send(result);
} else {
res.send(404);
}
},
getModule: function(req,res) {
var module = req.params.mod;
var result = redNodes.getModuleInfo(module);
if (result) {
res.send(result);
} else {
// check if module is actually a node-set
var matching = getMatchingNodes(module);
if (matching.length > 0) {
res.json(matching);
} else {
res.send(404);
}
}
},
putSet: 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 id = req.params.mod + "/" + req.params.set;
var node = redNodes.getNodeInfo(id);
var info;
if (!node) {
res.send(404);
} else {
res.json(putNode(node, body.enabled));
}
} catch(err) {
res.send(400,err.toString());
}
},
putModule: 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 mod = req.params.mod;
var module = redNodes.getModuleInfo(mod);
if (!module) {
var matching = getMatchingNodes(mod);
if (matching.length === 1) {
// One match, assume correct
res.json(putNode(matching[0], body.enabled));
return;
} else if (matching.length > 1) {
// Multiple matches, need clarification
result = {
multipleMatches: true,
matches: matching
};
res.json(result);
return;
} else {
// Doesn't exist
res.send(404);
return;
}
}
var nodes = module.nodes;
for (var i = 0; i < nodes.length; ++i) {
var node = nodes[i];
var info;
if (node.err || node.enabled !== body.enabled) {
if (body.enabled) {
info = redNodes.enableNode(node.id);
} else {
info = redNodes.disableNode(node.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 j = 0; j < info.types.length; j++) {
util.log("[red] - " + info.types[j]);
}
} else if (body.enabled && info.err) {
util.log("[red] Failed to enable node:");
util.log("[red] - "+info.name+" : "+info.err);
}
}
}
res.json(redNodes.getModuleInfo(mod));
} catch(err) {
res.send(400,err.toString());
}
}
};
function getMatchingNodes(node) {
var nodes = redNodes.getNodeList();
var matching = [];
nodes.forEach(function(n) {
if (n.name === node) {
n.version = redNodes.getModuleVersion(n.module);
matching.push(n);
}
});
return matching;
}
function putNode(node, enabled) {
var info;
if (!node.err && node.enabled === enabled) {
info = node;
} else {
if (enabled) {
info = redNodes.enableNode(node.id);
} else {
info = redNodes.disableNode(node.id);
}
if (info.enabled === enabled && !info.err) {
comms.publish("node/"+(enabled?"enabled":"disabled"),info,false);
util.log("[red] "+(enabled?"Enabled":"Disabled")+" node types:");
for (var i=0;i<info.types.length;i++) {
util.log("[red] - "+info.types[i]);
}
} else if (enabled && info.err) {
util.log("[red] Failed to enable node:");
util.log("[red] - "+info.name+" : "+info.err);
}
}
return info;
}