Refactor lib/flows code to include initial router component

packages/node_modules/@node-red/runtime/lib/api/flows.js

@@ -52,7 +52,7 @@ var api = module.exports = {
     getFlows: function(opts) {
         return new Promise(function(resolve,reject) {
             runtime.log.audit({event: "flows.get"}, opts.req);
-            return resolve(runtime.nodes.getFlows());
+            return resolve(runtime.flows.getFlows());
         });
     },
     /**
@@ -75,10 +75,10 @@ var api = module.exports = {
 
                 var apiPromise;
                 if (deploymentType === 'reload') {
-                    apiPromise = runtime.nodes.loadFlows(true);
+                    apiPromise = runtime.flows.loadFlows(true);
                 } else {
                     if (flows.hasOwnProperty('rev')) {
-                        var currentVersion = runtime.nodes.getFlows().rev;
+                        var currentVersion = runtime.flows.getFlows().rev;
                         if (currentVersion !== flows.rev) {
                             var err;
                             err = new Error();
@@ -114,7 +114,7 @@ var api = module.exports = {
         return mutex.runExclusive(function() {
             return new Promise(function (resolve, reject) {
                 var flow = opts.flow;
-                runtime.nodes.addFlow(flow,opts.user).then(function (id) {
+                runtime.flows.addFlow(flow, opts.user).then(function (id) {
                     runtime.log.audit({event: "flow.add", id: id}, opts.req);
                     return resolve(id);
                 }).catch(function (err) {
@@ -141,7 +141,7 @@ var api = module.exports = {
     */
     getFlow: function(opts) {
         return new Promise(function (resolve,reject) {
-            var flow = runtime.nodes.getFlow(opts.id);
+            var flow = runtime.flows.getFlow(opts.id);
             if (flow) {
                 runtime.log.audit({event: "flow.get",id:opts.id}, opts.req);
                 return resolve(flow);
@@ -170,7 +170,7 @@ var api = module.exports = {
                 var flow = opts.flow;
                 var id = opts.id;
                 try {
-                    runtime.nodes.updateFlow(id, flow, opts.user).then(function () {
+                    runtime.flows.updateFlow(id, flow, opts.user).then(function () {
                         runtime.log.audit({event: "flow.update", id: id}, opts.req);
                         return resolve(id);
                     }).catch(function (err) {
@@ -216,7 +216,7 @@ var api = module.exports = {
             return new Promise(function (resolve, reject) {
                 var id = opts.id;
                 try {
-                    runtime.nodes.removeFlow(id, opts.user).then(function () {
+                    runtime.flows.removeFlow(id, opts.user).then(function () {
                         runtime.log.audit({event: "flow.remove", id: id}, opts.req);
                         return resolve();
                     }).catch(function (err) {

packages/node_modules/@node-red/runtime/lib/flows/Flow.js

@@ -17,8 +17,10 @@
 var clone = require("clone");
 var redUtil = require("@node-red/util").util;
 var flowUtil = require("./util");
-var events = require("../../events");
+var events = require("../events");
-const context = require('../context');
+const context = require('../nodes/context');
+const router = require("./router");
+
 
 var Subflow;
 var Log;
@@ -543,6 +545,10 @@ class Flow {
         return asyncMessageDelivery
     }
 
+    send(src,destinationId,msg) {
+        router.send(src,destinationId,msg);
+    }
+
     dump() {
         console.log("==================")
         console.log(this.TYPE, this.id);

packages/node_modules/@node-red/runtime/lib/flows/Subflow.js

@@ -16,14 +16,14 @@
 
 const clone = require("clone");
 const Flow = require('./Flow').Flow;
-const context = require('../context');
+const context = require('../nodes/context');
 const util = require("util");
 
 const redUtil = require("@node-red/util").util;
 const flowUtil = require("./util");
 
 
-const credentials = require("../credentials");
+const credentials = require("../nodes/credentials");
 
 var Log;
 
@@ -159,7 +159,7 @@ class Subflow extends Flow {
     start(diff) {
         var self = this;
         // Create a subflow node to accept inbound messages and route appropriately
-        var Node = require("../Node");
+        var Node = require("../nodes/Node");
 
         if (this.subflowDef.status) {
             var subflowStatusConfig = {

packages/node_modules/@node-red/runtime/lib/flows/index.js

@@ -22,13 +22,12 @@ var Flow = require('./Flow');
 var typeRegistry = require("@node-red/registry");
 var deprecated = typeRegistry.deprecated;
 
-
+var context = require("../nodes/context")
-var context = require("../context")
+var credentials = require("../nodes/credentials");
-var credentials = require("../credentials");
+var router = require("./router");
-
 var flowUtil = require("./util");
 var log;
-var events = require("../../events");
+var events = require("../events");
 var redUtil = require("@node-red/util").util;
 
 var storage = null;
@@ -71,6 +70,7 @@ function init(runtime) {
     }
     Flow.init(runtime);
     flowUtil.init(runtime);
+    router.init(runtime);
 }
 
 function loadFlows() {

packages/node_modules/@node-red/runtime/lib/flows/router/index.js

@@ -0,0 +1,50 @@
+
+var settings;
+
+const LocalRouter = require("./localRouter");
+var defaultRouter;
+
+
+class Router {
+    constructor(stack) {
+        this.stack = stack || [];
+    }
+    send(source,destinationId,msg) {
+        var pos = 0;
+        var next = () => {
+            var router = this.stack[pos++];
+            if (router) {
+                router.send(source,destinationId,msg,next);
+            }
+        }
+        next();
+    }
+}
+
+function init(runtime) {
+    settings = runtime.settings;
+
+    defaultRouter = new Router([
+        new LocalRouter(),
+        new PostMessageLogger()
+    ])
+
+}
+
+function send(source,destinationId,msg) {
+    defaultRouter.send(source,destinationId,msg);
+}
+
+module.exports = {
+    init:init,
+    send: send
+}
+
+
+
+class PostMessageLogger {
+    constructor() {}
+    send(source,destinationId,msg,next) {
+        console.log(source.id.padEnd(16),"->",destinationId.padEnd(16),JSON.stringify(msg));
+    }
+}

packages/node_modules/@node-red/runtime/lib/flows/router/localRouter.js

@@ -0,0 +1,17 @@
+
+class LocalRouter {
+    constructor() {}
+    send(source,destinationId,msg,next) {
+        var node = source._flow.getNode(destinationId);
+        if (node) {
+            setImmediate(function() {
+                node.receive(msg);
+                next();
+            });
+        } else if (next) {
+            next()
+        }
+    }
+}
+
+module.exports = LocalRouter

packages/node_modules/@node-red/runtime/lib/index.js

@@ -19,6 +19,7 @@ var when = require('when');
 var externalAPI = require("./api");
 
 var redNodes = require("./nodes");
+var flows = require("./flows");
 var storage = require("./storage");
 var library = require("./library");
 var events = require("./events");
@@ -273,6 +274,7 @@ var runtime = {
     storage: storage,
     events: events,
     nodes: redNodes,
+    flows: flows,
     library: library,
     exec: exec,
     util: require("@node-red/util").util,

packages/node_modules/@node-red/runtime/lib/nodes/Node.js

@@ -20,7 +20,7 @@ var EventEmitter = require("events").EventEmitter;
 var redUtil = require("@node-red/util").util;
 var Log = require("@node-red/util").log;
 var context = require("./context");
-var flows = require("./flows");
+var flows = require("../flows");
 
 const NOOP_SEND = function() {}
 
@@ -55,10 +55,6 @@ function Node(n) {
         // as part of its constructor - config._flow will overwrite this._flow
         // which we can tolerate as they are the same object.
         Object.defineProperty(this,'_flow', {value: n._flow, enumerable: false, writable: true })
-        this._asyncDelivery = n._flow.asyncMessageDelivery;
-    }
-    if (this._asyncDelivery === undefined) {
-        this._asyncDelivery = true;
     }
     this.updateWires(n.wires);
 }
@@ -173,15 +169,7 @@ Node.prototype._emit = Node.prototype.emit;
 Node.prototype.emit = function(event, ...args) {
     var node = this;
     if (event === "input") {
-        // When Pluggable Message Routing arrives, this will be called from
+        this._emitInput.apply(this,args);
-        // that and will already be sync/async depending on the router.
-        if (this._asyncDelivery) {
-            setImmediate(function() {
-                node._emitInput.apply(node,args);
-            });
-        } else {
-            this._emitInput.apply(this,args);
-        }
     } else {
         this._emit.apply(this,arguments);
     }
@@ -366,11 +354,7 @@ Node.prototype.send = function(msg) {
                 msg._msgid = redUtil.generateId();
             }
             this.metric("send",msg);
-            node = this._flow.getNode(this._wire);
+            this._flow.send(this,this._wire,msg);
-            /* istanbul ignore else */
-            if (node) {
-                node.receive(msg);
-            }
             return;
         } else {
             msg = [msg];
@@ -398,23 +382,20 @@ Node.prototype.send = function(msg) {
                 var k = 0;
                 // for each recipent node of that output
                 for (var j = 0; j < wires.length; j++) {
-                    node = this._flow.getNode(wires[j]); // node at end of wire j
+                    // for each msg to send eg. [[m1, m2, ...], ...]
-                    if (node) {
+                    for (k = 0; k < msgs.length; k++) {
-                        // for each msg to send eg. [[m1, m2, ...], ...]
+                        var m = msgs[k];
-                        for (k = 0; k < msgs.length; k++) {
+                        if (m !== null && m !== undefined) {
-                            var m = msgs[k];
+                            /* istanbul ignore else */
-                            if (m !== null && m !== undefined) {
+                            if (!sentMessageId) {
-                                /* istanbul ignore else */
+                                sentMessageId = m._msgid;
-                                if (!sentMessageId) {
+                            }
-                                    sentMessageId = m._msgid;
+                            if (msgSent) {
-                                }
+                                var clonedmsg = redUtil.cloneMessage(m);
-                                if (msgSent) {
+                                sendEvents.push({n:wires[j],m:clonedmsg});
-                                    var clonedmsg = redUtil.cloneMessage(m);
+                            } else {
-                                    sendEvents.push({n:node,m:clonedmsg});
+                                sendEvents.push({n:wires[j],m:m});
-                                } else {
+                                msgSent = true;
-                                    sendEvents.push({n:node,m:m});
-                                    msgSent = true;
-                                }
                             }
                         }
                     }
@@ -434,7 +415,7 @@ Node.prototype.send = function(msg) {
         if (!ev.m._msgid) {
             ev.m._msgid = sentMessageId;
         }
-        ev.n.receive(ev.m);
+        this._flow.send(this,ev.n,ev.m);
     }
 };
 

packages/node_modules/@node-red/runtime/lib/nodes/context/index.js

@@ -18,7 +18,6 @@ var clone = require("clone");
 var log = require("@node-red/util").log;
 var util = require("@node-red/util").util;
 var memory = require("./memory");
-var flows;
 
 var settings;
 
@@ -48,7 +47,6 @@ function logUnknownStore(name) {
 }
 
 function init(_settings) {
-    flows = require("../flows");
     settings = _settings;
     contexts = {};
     stores = {};
@@ -513,39 +511,6 @@ function getContext(nodeId, flowId) {
     return newContext;
 }
 
-//
-// function getContext(localId,flowId,parent) {
-//     var contextId = localId;
-//     if (flowId) {
-//         contextId = localId+":"+flowId;
-//     }
-//     console.log("getContext",localId,flowId,"known?",contexts.hasOwnProperty(contextId));
-//     if (contexts.hasOwnProperty(contextId)) {
-//         return contexts[contextId];
-//     }
-//     var newContext = createContext(contextId,undefined,parent);
-//     if (flowId) {
-//         var node = flows.get(flowId);
-//         console.log("flows,get",flowId,node&&node.type)
-//         var parent = undefined;
-//         if (node && node.type.startsWith("subflow:")) {
-//             parent = node.context().flow;
-//         }
-//         else {
-//             parent = createRootContext();
-//         }
-//         var flowContext = getContext(flowId,undefined,parent);
-//         Object.defineProperty(newContext, 'flow', {
-//             value: flowContext
-//         });
-//     }
-//     Object.defineProperty(newContext, 'global', {
-//         value: contexts['global']
-//     })
-//     contexts[contextId] = newContext;
-//     return newContext;
-// }
-
 function deleteContext(id,flowId) {
     if(!hasConfiguredStore){
         // only delete context if there's no configured storage.

packages/node_modules/@node-red/runtime/lib/nodes/index.js

@@ -23,8 +23,8 @@ var util = require("util");
 var registry = require("@node-red/registry");
 
 var credentials = require("./credentials");
-var flows = require("./flows");
+var flows = require("../flows");
-var flowUtil = require("./flows/util")
+var flowUtil = require("../flows/util")
 var context = require("./context");
 var Node = require("./Node");
 var log;

test/unit/@node-red/runtime/lib/api/flows_spec.js

@@ -37,7 +37,7 @@ describe("runtime-api/flows", function() {
         it("returns the current flow configuration", function(done) {
             flows.init({
                 log: mockLog(),
-                nodes: {
+                flows: {
                     getFlows: function() { return [1,2,3] }
                 }
             });
@@ -76,7 +76,7 @@ describe("runtime-api/flows", function() {
             })
             flows.init({
                 log: mockLog(),
-                nodes: {
+                flows: {
                     getFlows: function() { return {rev:"currentRev",flows:[]} },
                     setFlows: setFlows,
                     loadFlows: loadFlows
@@ -192,7 +192,7 @@ describe("runtime-api/flows", function() {
             });
             flows.init({
                 log: mockLog(),
-                nodes: {
+                flows: {
                     addFlow: addFlow
                 }
             });
@@ -225,7 +225,7 @@ describe("runtime-api/flows", function() {
             });
             flows.init({
                 log: mockLog(),
-                nodes: {
+                flows: {
                     getFlow: getFlow
                 }
             });
@@ -268,7 +268,7 @@ describe("runtime-api/flows", function() {
             });
             flows.init({
                 log: mockLog(),
-                nodes: {
+                flows: {
                     updateFlow: updateFlow
                 }
             });
@@ -324,7 +324,7 @@ describe("runtime-api/flows", function() {
             });
             flows.init({
                 log: mockLog(),
-                nodes: {
+                flows: {
                     removeFlow: removeFlow
                 }
             });

test/unit/@node-red/runtime/lib/flows/Flow_spec.js

@@ -22,9 +22,9 @@ var util = require("util");
 
 var NR_TEST_UTILS = require("nr-test-utils");
 
-var flowUtils = NR_TEST_UTILS.require("@node-red/runtime/lib/nodes/flows/util");
+var flowUtils = NR_TEST_UTILS.require("@node-red/runtime/lib/flows/util");
-var Flow = NR_TEST_UTILS.require("@node-red/runtime/lib/nodes/flows/Flow");
+var Flow = NR_TEST_UTILS.require("@node-red/runtime/lib/flows/Flow");
-var flows = NR_TEST_UTILS.require("@node-red/runtime/lib/nodes/flows");
+var flows = NR_TEST_UTILS.require("@node-red/runtime/lib/flows");
 var Node = NR_TEST_UTILS.require("@node-red/runtime/lib/nodes/Node");
 var typeRegistry = NR_TEST_UTILS.require("@node-red/registry");
 

test/unit/@node-red/runtime/lib/flows/Subflow_spec.js

@@ -22,11 +22,11 @@ var util = require("util");
 
 var NR_TEST_UTILS = require("nr-test-utils");
 
-var Subflow = NR_TEST_UTILS.require("@node-red/runtime/lib/nodes/flows/Subflow");
+var Subflow = NR_TEST_UTILS.require("@node-red/runtime/lib/flows/Subflow");
-var Flow = NR_TEST_UTILS.require("@node-red/runtime/lib/nodes/flows/Flow");
+var Flow = NR_TEST_UTILS.require("@node-red/runtime/lib/flows/Flow");
 
-var flowUtils = NR_TEST_UTILS.require("@node-red/runtime/lib/nodes/flows/util");
+var flowUtils = NR_TEST_UTILS.require("@node-red/runtime/lib/flows/util");
-var flows = NR_TEST_UTILS.require("@node-red/runtime/lib/nodes/flows");
+var flows = NR_TEST_UTILS.require("@node-red/runtime/lib/flows");
 var Node = NR_TEST_UTILS.require("@node-red/runtime/lib/nodes/Node");
 var typeRegistry = NR_TEST_UTILS.require("@node-red/registry");
 

test/unit/@node-red/runtime/lib/flows/index_spec.js

@@ -20,13 +20,13 @@ var when = require("when");
 var clone = require("clone");
 var NR_TEST_UTILS = require("nr-test-utils");
 
-var flows = NR_TEST_UTILS.require("@node-red/runtime/lib/nodes/flows");
+var flows = NR_TEST_UTILS.require("@node-red/runtime/lib/flows");
 var RedNode = NR_TEST_UTILS.require("@node-red/runtime/lib/nodes/Node");
 var RED = NR_TEST_UTILS.require("@node-red/runtime/lib/nodes");
 var events = NR_TEST_UTILS.require("@node-red/runtime/lib/events");
 var credentials = NR_TEST_UTILS.require("@node-red/runtime/lib/nodes/credentials");
 var typeRegistry = NR_TEST_UTILS.require("@node-red/registry")
-var Flow = NR_TEST_UTILS.require("@node-red/runtime/lib/nodes/flows/Flow");
+var Flow = NR_TEST_UTILS.require("@node-red/runtime/lib/flows/Flow");
 
 describe('flows/index', function() {
 

test/unit/@node-red/runtime/lib/flows/util_spec.js

@@ -19,7 +19,7 @@ var sinon = require("sinon");
 var when = require("when");
 var clone = require("clone");
 var NR_TEST_UTILS = require("nr-test-utils");
-var flowUtil = NR_TEST_UTILS.require("@node-red/runtime/lib/nodes/flows/util");
+var flowUtil = NR_TEST_UTILS.require("@node-red/runtime/lib/flows/util");
 var typeRegistry = NR_TEST_UTILS.require("@node-red/registry");
 var redUtil = NR_TEST_UTILS.require("@node-red/util").util;
 

test/unit/@node-red/runtime/lib/nodes/Node_spec.js

@@ -19,7 +19,7 @@ var sinon = require('sinon');
 var NR_TEST_UTILS = require("nr-test-utils");
 var RedNode = NR_TEST_UTILS.require("@node-red/runtime/lib/nodes/Node");
 var Log = NR_TEST_UTILS.require("@node-red/util").log;
-var flows = NR_TEST_UTILS.require("@node-red/runtime/lib/nodes/flows");
+var flows = NR_TEST_UTILS.require("@node-red/runtime/lib/flows");
 
 describe('Node', function() {
     describe('#constructor',function() {
@@ -208,6 +208,7 @@ describe('Node', function() {
         it('emits a single message', function(done) {
             var flow = {
                 getNode: (id) => { return {'n1':n1,'n2':n2}[id]},
+                send: (node,dst,msg) => { setImmediate(function() { n2.receive(msg) ;})}
             };
             var n1 = new RedNode({_flow:flow,id:'n1',type:'abc',wires:[['n2']]});
             var n2 = new RedNode({_flow:flow,id:'n2',type:'abc'});
@@ -255,7 +256,9 @@ describe('Node', function() {
 
         it('emits a single message - synchronous mode', function(done) {
             var flow = {
+                handleError: (node,logMessage,msg,reportingNode) => {done(logMessage)},
                 getNode: (id) => { return {'n1':n1,'n2':n2}[id]},
+                send: (node,dst,msg) => { n2.receive(msg) ;},
                 asyncMessageDelivery: false
             };
             var n1 = new RedNode({_flow:flow,id:'n1',type:'abc',wires:[['n2']]});
@@ -284,8 +287,10 @@ describe('Node', function() {
 
         it('emits a message with callback provided send', function(done) {
             var flow = {
+                handleError: (node,logMessage,msg,reportingNode) => {done(logMessage)},
                 getNode: (id) => { return {'n1':n1,'n2':n2}[id]},
-                handleComplete: (node,msg) => {}
+                handleComplete: (node,msg) => {},
+                send: (node,dst,msg) => { setImmediate(function() { n2.receive(msg) ;})}
             };
             var n1 = new RedNode({_flow:flow,id:'n1',type:'abc',wires:[['n2']]});
             var n2 = new RedNode({_flow:flow,id:'n2',type:'abc'});
@@ -308,7 +313,9 @@ describe('Node', function() {
 
         it('emits multiple messages on a single output', function(done) {
             var flow = {
+                handleError: (node,logMessage,msg,reportingNode) => {done(logMessage)},
                 getNode: (id) => { return {'n1':n1,'n2':n2}[id]},
+                send: (node,dst,msg) => { setImmediate(function() { n2.receive(msg) ;})}
             };
             var n1 = new RedNode({_flow:flow,id:'n1',type:'abc',wires:[['n2']]});
             var n2 = new RedNode({_flow:flow,id:'n2',type:'abc'});
@@ -338,14 +345,15 @@ describe('Node', function() {
 
         it('emits messages to multiple outputs', function(done) {
             var flow = {
+                handleError: (node,logMessage,msg,reportingNode) => {done(logMessage)},
                 getNode: (id) => { return {'n1':n1,'n2':n2,'n3':n3,'n4':n4,'n5':n5}[id]},
+                send: (node,dst,msg) => { setImmediate(function() { flow.getNode(dst).receive(msg) })}
             };
             var n1 = new RedNode({_flow:flow, id:'n1',type:'abc',wires:[['n2'],['n3'],['n4','n5']]});
             var n2 = new RedNode({_flow:flow, id:'n2',type:'abc'});
             var n3 = new RedNode({_flow:flow, id:'n3',type:'abc'});
             var n4 = new RedNode({_flow:flow, id:'n4',type:'abc'});
             var n5 = new RedNode({_flow:flow, id:'n5',type:'abc'});
-
             var messages = [
                 {payload:"hello world"},
                 null,
@@ -396,6 +404,7 @@ describe('Node', function() {
 
         it('emits no messages', function(done) {
             var flow = {
+                handleError: (node,logMessage,msg,reportingNode) => {done(logMessage)},
                 getNode: (id) => { return {'n1':n1,'n2':n2}[id]},
             };
             var n1 = new RedNode({_flow:flow,id:'n1',type:'abc',wires:[['n2']]});
@@ -414,20 +423,20 @@ describe('Node', function() {
 
         it('emits messages ignoring non-existent nodes', function(done) {
             var flow = {
+                handleError: (node,logMessage,msg,reportingNode) => {done(logMessage)},
                 getNode: (id) => { return {'n1':n1,'n2':n2}[id]},
+                send: (node,dst,msg) => { setImmediate(function() { var n = flow.getNode(dst); n && n.receive(msg) })}
             };
             var n1 = new RedNode({_flow:flow,id:'n1',type:'abc',wires:[['n9'],['n2']]});
             var n2 = new RedNode({_flow:flow,id:'n2',type:'abc'});
 
             var messages = [
-                {payload:"hello world"},
+                {_msgid:"123", payload:"hello world"},
-                {payload:"hello world again"}
+                {_msgid:"234", payload:"hello world again"}
             ];
 
-            // only one message sent, so no copy needed
             n2.on('input',function(msg) {
                 should.deepEqual(msg,messages[1]);
-                should.strictEqual(msg,messages[1]);
                 done();
             });
 
@@ -437,6 +446,7 @@ describe('Node', function() {
         it('emits messages without cloning req or res', function(done) {
             var flow = {
                 getNode: (id) => { return {'n1':n1,'n2':n2,'n3':n3}[id]},
+                send: (node,dst,msg) => { setImmediate(function() { flow.getNode(dst).receive(msg) })}
             };
             var n1 = new RedNode({_flow:flow,id:'n1',type:'abc',wires:[[['n2'],['n3']]]});
             var n2 = new RedNode({_flow:flow,id:'n2',type:'abc'});
@@ -493,6 +503,7 @@ describe('Node', function() {
             Log.addHandler(logHandler);
             var flow = {
                 getNode: (id) => { return {'n1':sender,'n2':receiver1,'n3':receiver2}[id]},
+                send: (node,dst,msg) => { setImmediate(function() { flow.getNode(dst).receive(msg) })}
             };
 
             var sender = new RedNode({_flow:flow,id:'n1',type:'abc', wires:[['n2', 'n3']]});

test/unit/@node-red/runtime/lib/nodes/index_spec.js

@@ -23,7 +23,7 @@ var inherits = require("util").inherits;
 
 var NR_TEST_UTILS = require("nr-test-utils");
 var index = NR_TEST_UTILS.require("@node-red/runtime/lib/nodes/index");
-var flows = NR_TEST_UTILS.require("@node-red/runtime/lib/nodes/flows");
+var flows = NR_TEST_UTILS.require("@node-red/runtime/lib/flows");
 var registry = NR_TEST_UTILS.require("@node-red/registry")
 var Node = NR_TEST_UTILS.require("@node-red/runtime/lib/nodes/Node");