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node-red/public/red/nodes.js

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/**
* 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.
**/
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RED.nodes = (function() {
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var node_defs = {};
var nodes = [];
var configNodes = {};
var links = [];
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var defaultWorkspace;
var workspaces = {};
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var subflows = {};
var registry = (function() {
var nodeList = [];
var nodeSets = {};
var typeToId = {};
var nodeDefinitions = {};
var exports = {
getNodeList: function() {
return nodeList;
},
setNodeList: function(list) {
nodeList = [];
for(var i=0;i<list.length;i++) {
var ns = list[i];
exports.addNodeSet(ns);
}
},
addNodeSet: function(ns) {
ns.added = false;
nodeSets[ns.id] = ns;
for (var j=0;j<ns.types.length;j++) {
typeToId[ns.types[j]] = ns.id;
}
nodeList.push(ns);
},
removeNodeSet: function(id) {
var ns = nodeSets[id];
for (var j=0;j<ns.types.length;j++) {
if (ns.added) {
// TODO: too tightly coupled into palette UI
RED.palette.remove(ns.types[j]);
var def = nodeDefinitions[ns.types[j]];
if (def.onpaletteremove && typeof def.onpaletteremove === "function") {
def.onpaletteremove.call(def);
}
}
delete typeToId[ns.types[j]];
}
delete nodeSets[id];
for (var i=0;i<nodeList.length;i++) {
if (nodeList[i].id == id) {
nodeList.splice(i,1);
break;
}
}
return ns;
},
getNodeSet: function(id) {
return nodeSets[id];
},
enableNodeSet: function(id) {
var ns = nodeSets[id];
ns.enabled = true;
for (var j=0;j<ns.types.length;j++) {
// TODO: too tightly coupled into palette UI
RED.palette.show(ns.types[j]);
var def = nodeDefinitions[ns.types[j]];
if (def.onpaletteadd && typeof def.onpaletteadd === "function") {
def.onpaletteadd.call(def);
}
}
},
disableNodeSet: function(id) {
var ns = nodeSets[id];
ns.enabled = false;
for (var j=0;j<ns.types.length;j++) {
// TODO: too tightly coupled into palette UI
RED.palette.hide(ns.types[j]);
var def = nodeDefinitions[ns.types[j]];
if (def.onpaletteremove && typeof def.onpaletteremove === "function") {
def.onpaletteremove.call(def);
}
}
},
registerNodeType: function(nt,def) {
nodeDefinitions[nt] = def;
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if (def.category != "subflows") {
nodeSets[typeToId[nt]].added = true;
// TODO: too tightly coupled into palette UI
}
RED.palette.add(nt,def);
if (def.onpaletteadd && typeof def.onpaletteadd === "function") {
def.onpaletteadd.call(def);
}
},
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removeNodeType: function(nt) {
if (nt.substring(0,8) != "subflow:") {
throw new Error("this api is subflow only. called with:",nt);
}
delete nodeDefinitions[nt];
RED.palette.remove(nt);
},
getNodeType: function(nt) {
return nodeDefinitions[nt];
}
};
return exports;
})();
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function getID() {
return (1+Math.random()*4294967295).toString(16);
}
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function addNode(n) {
if (n._def.category == "config") {
configNodes[n.id] = n;
RED.sidebar.config.refresh();
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} else {
n.dirty = true;
var updatedConfigNode = false;
for (var d in n._def.defaults) {
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if (n._def.defaults.hasOwnProperty(d)) {
var property = n._def.defaults[d];
if (property.type) {
var type = registry.getNodeType(property.type);
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if (type && type.category == "config") {
var configNode = configNodes[n[d]];
if (configNode) {
updatedConfigNode = true;
configNode.users.push(n);
}
}
}
}
}
if (updatedConfigNode) {
RED.sidebar.config.refresh();
}
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if (n._def.category == "subflows" && typeof n.i === "undefined") {
var nextId = 0;
RED.nodes.eachNode(function(node) {
nextId = Math.max(nextId,node.i||0);
});
n.i = nextId+1;
}
nodes.push(n);
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}
}
function addLink(l) {
links.push(l);
}
function addConfig(c) {
configNodes[c.id] = c;
}
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function getNode(id) {
if (id in configNodes) {
return configNodes[id];
} else {
for (var n in nodes) {
if (nodes[n].id == id) {
return nodes[n];
}
}
}
return null;
}
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function removeNode(id) {
var removedLinks = [];
if (id in configNodes) {
delete configNodes[id];
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RED.sidebar.config.refresh();
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} else {
var node = getNode(id);
if (node) {
nodes.splice(nodes.indexOf(node),1);
removedLinks = links.filter(function(l) { return (l.source === node) || (l.target === node); });
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removedLinks.forEach(function(l) {links.splice(links.indexOf(l), 1); });
var updatedConfigNode = false;
for (var d in node._def.defaults) {
if (node._def.defaults.hasOwnProperty(d)) {
var property = node._def.defaults[d];
if (property.type) {
var type = registry.getNodeType(property.type);
if (type && type.category == "config") {
var configNode = configNodes[node[d]];
if (configNode) {
updatedConfigNode = true;
var users = configNode.users;
users.splice(users.indexOf(node),1);
}
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}
}
}
}
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if (updatedConfigNode) {
RED.sidebar.config.refresh();
}
}
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}
return removedLinks;
}
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function removeLink(l) {
var index = links.indexOf(l);
if (index != -1) {
links.splice(index,1);
}
}
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function refreshValidation() {
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for (var n=0;n<nodes.length;n++) {
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RED.editor.validateNode(nodes[n]);
}
}
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function addWorkspace(ws) {
workspaces[ws.id] = ws;
}
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function getWorkspace(id) {
return workspaces[id];
}
function removeWorkspace(id) {
delete workspaces[id];
var removedNodes = [];
var removedLinks = [];
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var n;
for (n=0;n<nodes.length;n++) {
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var node = nodes[n];
if (node.z == id) {
removedNodes.push(node);
}
}
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for (n=0;n<removedNodes.length;n++) {
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var rmlinks = removeNode(removedNodes[n].id);
removedLinks = removedLinks.concat(rmlinks);
}
return {nodes:removedNodes,links:removedLinks};
}
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function addSubflow(sf) {
subflows[sf.id] = sf;
RED.nodes.registerType("subflow:"+sf.id, {
defaults:{name:{value:""}},
icon:"subflow.png",
category: "subflows",
inputs: sf.in.length,
outputs: sf.out.length,
color: "#da9",
label: function() { return this.name||RED.nodes.subflow(sf.id).name },
labelStyle: function() { return this.name?"node_label_italic":""; },
paletteLabel: function() { return RED.nodes.subflow(sf.id).name }
});
}
function getSubflow(id) {
return subflows[id];
}
function removeSubflow(sf) {
delete subflows[sf.id];
registry.removeNodeType("subflow:"+sf.id);
}
function subflowContains(sfid,nodeid) {
for (var i=0;i<nodes.length;i++) {
var node = nodes[i];
if (node.z === sfid) {
var m = /^subflow:(.+)$/.exec(node.type);
if (m) {
if (m[1] === nodeid) {
return true;
} else {
var result = subflowContains(m[1],nodeid);
if (result) {
return true;
}
}
}
}
}
return false;
}
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function getAllFlowNodes(node) {
var visited = {};
visited[node.id] = true;
var nns = [node];
var stack = [node];
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while(stack.length !== 0) {
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var n = stack.shift();
var childLinks = links.filter(function(d) { return (d.source === n) || (d.target === n);});
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for (var i=0;i<childLinks.length;i++) {
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var child = (childLinks[i].source === n)?childLinks[i].target:childLinks[i].source;
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var id = child.id;
if (!id) {
id = child.direction+":"+child.i;
}
if (!visited[id]) {
visited[id] = true;
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nns.push(child);
stack.push(child);
}
}
}
return nns;
}
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/**
* Converts a node to an exportable JSON Object
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**/
function convertNode(n, exportCreds) {
exportCreds = exportCreds || false;
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var node = {};
node.id = n.id;
node.type = n.type;
if (node.type == "unknown") {
for (var p in n._orig) {
if (n._orig.hasOwnProperty(p)) {
node[p] = n._orig[p];
}
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}
} else {
for (var d in n._def.defaults) {
if (n._def.defaults.hasOwnProperty(d)) {
node[d] = n[d];
}
}
if(exportCreds && n.credentials) {
node.credentials = {};
for (var cred in n._def.credentials) {
if (n._def.credentials.hasOwnProperty(cred)) {
if (n.credentials[cred] != null) {
node.credentials[cred] = n.credentials[cred];
}
}
}
}
}
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if (n._def.category != "config") {
node.x = n.x;
node.y = n.y;
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node.z = n.z;
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node.wires = [];
for(var i=0;i<n.outputs;i++) {
node.wires.push([]);
}
var wires = links.filter(function(d){return d.source === n;});
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for (var j=0;j<wires.length;j++) {
var w = wires[j];
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if (w.target.type != "subflow") {
node.wires[w.sourcePort].push(w.target.id);
}
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}
}
return node;
}
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function convertSubflow(n) {
var node = {};
node.id = n.id;
node.type = n.type;
node.name = n.name;
node.in = [];
node.out = [];
n.in.forEach(function(p) {
var nIn = {x:p.x,y:p.y,wires:[]};
var wires = links.filter(function(d) { return d.source === p });
for (var i=0;i<wires.length;i++) {
var w = wires[i];
if (w.target.id != p.id) {
nIn.wires.push({id:w.target.id})
}
}
node.in.push(nIn);
});
n.out.forEach(function(p,c) {
var nOut = {x:p.x,y:p.y,wires:[]};
var wires = links.filter(function(d) { return d.target === p });
for (i=0;i<wires.length;i++) {
if (wires[i].source.type != "subflow") {
nOut.wires.push({id:wires[i].source.id,port:wires[i].sourcePort})
} else {
nOut.wires.push({id:n.id,port:0})
}
}
node.out.push(nOut);
});
return node;
}
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/**
* Converts the current node selection to an exportable JSON Object
**/
function createExportableNodeSet(set) {
var nns = [];
var exportedConfigNodes = {};
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var exportedSubflows = {};
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for (var n=0;n<set.length;n++) {
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var node = set[n].n;
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if (node.type.substring(0,8) == "subflow:") {
var subflowId = node.type.substring(8);
if (!exportedSubflows[subflowId]) {
exportedSubflows[subflowId] = true;
var subflow = getSubflow(subflowId);
var subflowSet = [{n:subflow}];
RED.nodes.eachNode(function(n) {
if (n.z == subflowId) {
subflowSet.push({n:n});
}
});
var exportableSubflow = createExportableNodeSet(subflowSet);
nns = exportableSubflow.concat(nns);
}
}
if (node.type != "subflow") {
var convertedNode = RED.nodes.convertNode(node);
for (var d in node._def.defaults) {
if (node._def.defaults[d].type && node[d] in configNodes) {
var confNode = configNodes[node[d]];
var exportable = registry.getNodeType(node._def.defaults[d].type).exportable;
if ((exportable == null || exportable)) {
if (!(node[d] in exportedConfigNodes)) {
exportedConfigNodes[node[d]] = true;
nns.unshift(RED.nodes.convertNode(confNode));
}
} else {
convertedNode[d] = "";
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}
}
}
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nns.push(convertedNode);
} else {
var convertedSubflow = convertSubflow(node);
nns.push(convertedSubflow);
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}
}
return nns;
}
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//TODO: rename this (createCompleteNodeSet)
function createCompleteNodeSet() {
var nns = [];
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var i;
for (i in workspaces) {
if (workspaces.hasOwnProperty(i)) {
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if (workspaces[i].type == "tab") {
nns.push(workspaces[i]);
}
}
}
for (i in subflows) {
if (subflows.hasOwnProperty(i)) {
nns.push(convertSubflow(subflows[i]));
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}
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}
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for (i in configNodes) {
if (configNodes.hasOwnProperty(i)) {
nns.push(convertNode(configNodes[i], true));
}
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}
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for (i=0;i<nodes.length;i++) {
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var node = nodes[i];
nns.push(convertNode(node, true));
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}
return nns;
}
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function importNodes(newNodesObj,createNewIds) {
try {
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var i;
var n;
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var newNodes;
if (typeof newNodesObj === "string") {
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if (newNodesObj === "") {
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return;
}
newNodes = JSON.parse(newNodesObj);
} else {
newNodes = newNodesObj;
}
if (!$.isArray(newNodes)) {
newNodes = [newNodes];
}
var unknownTypes = [];
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for (i=0;i<newNodes.length;i++) {
n = newNodes[i];
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// TODO: remove workspace in next release+1
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if (n.type != "workspace" &&
n.type != "tab" &&
n.type != "subflow" &&
!registry.getNodeType(n.type) &&
n.type.substring(0,8) != "subflow:") {
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// TODO: get this UI thing out of here! (see below as well)
if (unknownTypes.indexOf(n.type)==-1) {
unknownTypes.push(n.type);
}
//if (n.x == null && n.y == null) {
// // config node - remove it
// newNodes.splice(i,1);
// i--;
//}
}
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}
if (unknownTypes.length > 0) {
var typeList = "<ul><li>"+unknownTypes.join("</li><li>")+"</li></ul>";
var type = "type"+(unknownTypes.length > 1?"s":"");
RED.notify("<strong>Imported unrecognised "+type+":</strong>"+typeList,"error",false,10000);
//"DO NOT DEPLOY while in this state.<br/>Either, add missing types to Node-RED, restart and then reload page,<br/>or delete unknown "+n.name+", rewire as required, and then deploy.","error");
}
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var activeWorkspace = RED.view.getWorkspace();
var activeSubflow = getSubflow(activeWorkspace);
if (activeSubflow) {
for (i=0;i<newNodes.length;i++) {
var m = /^subflow:(.+)$/.exec(newNodes[i].type);
if (m) {
var subflowId = m[1];
var err;
if (subflowId === activeSubflow.id) {
err = new Error("Cannot add subflow to itself");
}
if (subflowContains(m[1],activeSubflow.id)) {
err = new Error("Cannot add subflow - circular reference detected");
}
if (err) {
// TODO: standardise error codes
err.code = "NODE_RED";
throw err;
}
}
}
}
var new_workspaces = [];
var workspace_map = {};
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var new_subflows = [];
var subflow_map = {};
var nid;
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for (i=0;i<newNodes.length;i++) {
n = newNodes[i];
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// TODO: remove workspace in next release+1
if (n.type === "workspace" || n.type === "tab") {
if (n.type === "workspace") {
n.type = "tab";
}
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if (defaultWorkspace == null) {
defaultWorkspace = n;
}
if (createNewIds) {
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nid = getID();
workspace_map[n.id] = nid;
n.id = nid;
}
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addWorkspace(n);
RED.view.addWorkspace(n);
new_workspaces.push(n);
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} else if (n.type === "subflow") {
subflow_map[n.id] = n;
if (createNewIds) {
nid = getID();
n.id = nid;
}
// TODO: handle createNewIds - map old to new subflow ids
n.in.forEach(function(input,i) {
input.type = "subflow";
input.direction = "in";
input.z = n.id;
input.i = i;
});
n.out.forEach(function(output,i) {
output.type = "subflow";
output.direction = "out";
output.z = n.id;
output.i = i;
});
new_subflows.push(n);
addSubflow(n);
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}
}
if (defaultWorkspace == null) {
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defaultWorkspace = { type:"tab", id:getID(), label:"Sheet 1" };
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addWorkspace(defaultWorkspace);
RED.view.addWorkspace(defaultWorkspace);
new_workspaces.push(defaultWorkspace);
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}
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var node_map = {};
var new_nodes = [];
var new_links = [];
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for (i=0;i<newNodes.length;i++) {
n = newNodes[i];
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// TODO: remove workspace in next release+1
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if (n.type !== "workspace" && n.type !== "tab" && n.type !== "subflow") {
var def = registry.getNodeType(n.type);
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if (def && def.category == "config") {
if (!RED.nodes.node(n.id)) {
var configNode = {id:n.id,type:n.type,users:[]};
for (var d in def.defaults) {
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if (def.defaults.hasOwnProperty(d)) {
configNode[d] = n[d];
}
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}
configNode.label = def.label;
configNode._def = def;
RED.nodes.add(configNode);
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}
} else {
var node = {x:n.x,y:n.y,z:n.z,type:0,wires:n.wires,changed:false};
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if (createNewIds) {
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if (subflow_map[node.z]) {
node.z = subflow_map[node.z].id;
} else {
node.z = workspace_map[node.z];
if (!workspaces[node.z]) {
node.z = activeWorkspace;
}
}
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node.id = getID();
} else {
node.id = n.id;
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if (node.z == null || (!workspaces[node.z] && !subflow_map[node.z])) {
node.z = activeWorkspace;
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}
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}
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node.type = n.type;
node._def = def;
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if (n.type.substring(0,7) === "subflow") {
var parentId = n.type.split(":")[1];
var subflow = subflow_map[parentId]||getSubflow(parentId);
if (createNewIds) {
parentId = subflow.id;
node.type = "subflow:"+parentId;
node._def = registry.getNodeType(node.type);
delete node.i;
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}
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node.outputs = subflow.out.length;
node.inputs = subflow.in.length;
} else {
if (!node._def) {
if (node.x && node.y) {
node._def = {
color:"#fee",
defaults: {},
label: "unknown: "+n.type,
labelStyle: "node_label_italic",
outputs: n.outputs||n.wires.length
}
} else {
node._def = {
category:"config"
};
node.users = [];
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}
var orig = {};
for (var p in n) {
if (n.hasOwnProperty(p) && p!="x" && p!="y" && p!="z" && p!="id" && p!="wires") {
orig[p] = n[p];
}
}
node._orig = orig;
node.name = n.type;
node.type = "unknown";
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}
if (node._def.category != "config") {
node.inputs = n.inputs||node._def.inputs;
node.outputs = n.outputs||node._def.outputs;
for (var d2 in node._def.defaults) {
if (node._def.defaults.hasOwnProperty(d2)) {
node[d2] = n[d2];
}
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}
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}
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}
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addNode(node);
RED.editor.validateNode(node);
node_map[n.id] = node;
if (node._def.category != "config") {
new_nodes.push(node);
}
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}
}
}
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for (i=0;i<new_nodes.length;i++) {
n = new_nodes[i];
for (var w1=0;w1<n.wires.length;w1++) {
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var wires = (n.wires[w1] instanceof Array)?n.wires[w1]:[n.wires[w1]];
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for (var w2=0;w2<wires.length;w2++) {
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if (wires[w2] in node_map) {
var link = {source:n,sourcePort:w1,target:node_map[wires[w2]]};
addLink(link);
new_links.push(link);
}
}
}
delete n.wires;
}
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for (i=0;i<new_subflows.length;i++) {
n = new_subflows[i];
n.in.forEach(function(input) {
input.wires.forEach(function(wire) {
var link = {source:input, sourcePort:0, target:node_map[wire.id]};
addLink(link);
new_links.push(link);
});
delete input.wires;
});
n.out.forEach(function(output) {
output.wires.forEach(function(wire) {
var link;
if (wire.id == n.id) {
link = {source:n.in[wire.port], sourcePort:wire.port,target:output};
} else {
link = {source:node_map[wire.id], sourcePort:wire.port,target:output};
}
addLink(link);
new_links.push(link);
});
delete output.wires;
});
}
return [new_nodes,new_links,new_workspaces,new_subflows];
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} catch(error) {
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if (error.code != "NODE_RED") {
console.log(error.stack);
RED.notify("<strong>Error</strong>: "+error,"error");
} else {
RED.notify("<strong>Error</strong>: "+error.message,"error");
}
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return null;
}
}
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return {
registry:registry,
setNodeList: registry.setNodeList,
getNodeSet: registry.getNodeSet,
addNodeSet: registry.addNodeSet,
removeNodeSet: registry.removeNodeSet,
enableNodeSet: registry.enableNodeSet,
disableNodeSet: registry.disableNodeSet,
registerType: registry.registerNodeType,
getType: registry.getNodeType,
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convertNode: convertNode,
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add: addNode,
remove: removeNode,
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addLink: addLink,
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removeLink: removeLink,
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addWorkspace: addWorkspace,
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removeWorkspace: removeWorkspace,
workspace: getWorkspace,
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addSubflow: addSubflow,
removeSubflow: removeSubflow,
subflow: getSubflow,
subflowContains: subflowContains,
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eachNode: function(cb) {
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for (var n=0;n<nodes.length;n++) {
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cb(nodes[n]);
}
},
eachLink: function(cb) {
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for (var l=0;l<links.length;l++) {
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cb(links[l]);
}
},
eachConfig: function(cb) {
for (var id in configNodes) {
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if (configNodes.hasOwnProperty(id)) {
cb(configNodes[id]);
}
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}
},
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eachSubflow: function(cb) {
for (var id in subflows) {
if (subflows.hasOwnProperty(id)) {
cb(subflows[id]);
}
}
},
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node: getNode,
import: importNodes,
refreshValidation: refreshValidation,
getAllFlowNodes: getAllFlowNodes,
createExportableNodeSet: createExportableNodeSet,
createCompleteNodeSet: createCompleteNodeSet,
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id: getID,
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nodes: nodes, // TODO: exposed for d3 vis
links: links // TODO: exposed for d3 vis
};
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})();