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node-red/red/api/library.js

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/**
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* Copyright 2013, 2015 IBM Corp.
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*
* 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 redApp = null;
var storage;
var log;
var needsPermission = require("./auth").needsPermission;
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function createLibrary(type) {
if (redApp) {
redApp.get(new RegExp("/library/"+type+"($|\/(.*))"),needsPermission("library.read"),function(req,res) {
var path = req.params[1]||"";
storage.getLibraryEntry(type,path).then(function(result) {
log.audit({event: "library.get",type:type},req);
if (typeof result === "string") {
res.writeHead(200, {'Content-Type': 'text/plain'});
res.write(result);
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res.end();
} else {
res.json(result);
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}
}).otherwise(function(err) {
if (err) {
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log.warn(log._("api.library.error-load-entry",{path:path,message:err.toString()}));
if (err.code === 'forbidden') {
log.audit({event: "library.get",type:type,error:"forbidden"},req);
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res.status(403).end();
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return;
}
}
log.audit({event: "library.get",type:type,error:"not_found"},req);
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res.status(404).end();
});
});
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redApp.post(new RegExp("/library/"+type+"\/(.*)"),needsPermission("library.write"),function(req,res) {
var path = req.params[0];
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var meta = req.body;
var text = meta.text;
delete meta.text;
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storage.saveLibraryEntry(type,path,meta,text).then(function() {
log.audit({event: "library.set",type:type},req);
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res.status(204).end();
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}).otherwise(function(err) {
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log.warn(log._("api.library.error-save-entry",{path:path,message:err.toString()}));
if (err.code === 'forbidden') {
log.audit({event: "library.set",type:type,error:"forbidden"},req);
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res.status(403).end();
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return;
}
log.audit({event: "library.set",type:type,error:"unexpected_error",message:err.toString()},req);
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res.status(500).json({error:"unexpected_error", message:err.toString()});
});
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});
}
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}
module.exports = {
init: function(app,runtime) {
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redApp = app;
log = runtime.log;
storage = runtime.storage;
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},
register: createLibrary,
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getAll: function(req,res) {
storage.getAllFlows().then(function(flows) {
log.audit({event: "library.get.all",type:"flow"},req);
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res.json(flows);
});
},
get: function(req,res) {
storage.getFlow(req.params[0]).then(function(data) {
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// data is already a JSON string
log.audit({event: "library.get",type:"flow",path:req.params[0]},req);
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res.set('Content-Type', 'application/json');
res.send(data);
}).otherwise(function(err) {
if (err) {
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log.warn(log._("api.library.error-load-flow",{path:req.params[0],message:err.toString()}));
if (err.code === 'forbidden') {
log.audit({event: "library.get",type:"flow",path:req.params[0],error:"forbidden"},req);
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res.status(403).end();
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return;
}
}
log.audit({event: "library.get",type:"flow",path:req.params[0],error:"not_found"},req);
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res.status(404).end();
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});
},
post: function(req,res) {
var flow = JSON.stringify(req.body);
storage.saveFlow(req.params[0],flow).then(function() {
log.audit({event: "library.set",type:"flow",path:req.params[0]},req);
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res.status(204).end();
}).otherwise(function(err) {
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log.warn(log._("api.library.error-save-flow",{path:req.params[0],message:err.toString()}));
if (err.code === 'forbidden') {
log.audit({event: "library.set",type:"flow",path:req.params[0],error:"forbidden"},req);
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res.status(403).end();
return;
}
log.audit({event: "library.set",type:"flow",path:req.params[0],error:"unexpected_error",message:err.toString()},req);
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res.status(500).send({error:"unexpected_error", message:err.toString()});
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});
}
}