mirror of
https://github.com/node-red/node-red.git
synced 2023-10-10 13:36:53 +02:00
Re-write link call targeting...
- Remove msg.target by object
- Remove :: scoping
- Always try to locate matching link-in on same flow first
- If not found, look on all flows
- if 1 found, call it
- If more than 1 link target found, raise error
This commit is contained in:
Steve-Mcl
parent
e4f0688a02
commit
19cf43a10e
@ -14,106 +14,106 @@
|
||||
* limitations under the License.
|
||||
**/
|
||||
|
||||
/**
|
||||
* @typedef LinkTarget
|
||||
* @type {object}
|
||||
* @property {string} id - ID of the target node.
|
||||
* @property {string} name - Name of target Node
|
||||
* @property {number} flowId - ID of flow where the target node exists
|
||||
* @property {string} flowName - Name of flow where the target node exists
|
||||
*/
|
||||
|
||||
|
||||
module.exports = function(RED) {
|
||||
"use strict";
|
||||
const crypto = require("crypto");
|
||||
const targetCache = (function() {
|
||||
const name2id = {};
|
||||
let id2target = {};
|
||||
const registry = { ids: {}, named: {}};
|
||||
function getIndex(/** @type {[LinkTarget]}*/ targets, id) {
|
||||
for (let index = 0; index < (targets || []).length; index++) {
|
||||
const element = targets[index];
|
||||
if (element.id === id) {
|
||||
return index;
|
||||
}
|
||||
}
|
||||
return -1;
|
||||
}
|
||||
/**
|
||||
* Generate a target object from a node
|
||||
* @param {LinkInNode} node
|
||||
* @returns {LinkTarget} a link target object
|
||||
*/
|
||||
function generateTarget(node) {
|
||||
return {
|
||||
id: node.id,
|
||||
name: node.name || node.id,
|
||||
flowId: node._flow.flow.id,
|
||||
flowName: node._flow.flow.label,
|
||||
isSubFlow: false
|
||||
}
|
||||
}
|
||||
return {
|
||||
/** @type {((node: Node, [flowName]: string) => string) & ((nodeName: string, flowName: string) => string))} */
|
||||
generateLookupName(node, flowName) {
|
||||
if(!flowName) {
|
||||
flowName = node._flow.flow.label
|
||||
}
|
||||
if(node instanceof LinkInNode) {
|
||||
return `${flowName}/${node.name}`;
|
||||
}
|
||||
return `${flowName}/${node}`;
|
||||
/**
|
||||
* Get a list of targets registerd to this name
|
||||
* @param {string} name
|
||||
* @returns {[LinkTarget]} Targets registerd to this name.
|
||||
*/
|
||||
getTargets(name) {
|
||||
return registry.named[name] || [];
|
||||
},
|
||||
add(node) {
|
||||
const id = node.id;
|
||||
const nodeName = node.name;
|
||||
if(!nodeName){ return null;} //node must be named
|
||||
const flowName = node._flow.flow.label;
|
||||
const lookupName = targetCache.generateLookupName(nodeName, flowName);
|
||||
console.log(`Adding node '${lookupName}' (${id}) to cache`)
|
||||
if(name2id[lookupName] && name2id[lookupName].id !== id) {
|
||||
//TODO: reassignment? duplate lookupName? throw error or warning?
|
||||
console.warn(`💣 '${lookupName}' is already assigned to node with ID: ${name2id[lookupName]} `)
|
||||
/**
|
||||
* Get a single target by registered name.
|
||||
* To restrict to a single flow, include the `flowId`
|
||||
* If there is no targets OR more than one target, null is returned
|
||||
* @param {string} name Name of the node
|
||||
* @param {string} [flowId]
|
||||
* @returns {LinkTarget} target
|
||||
*/
|
||||
getTarget(name, flowId) {
|
||||
let possibleTargets = this.getTargets(name);
|
||||
/** @type {LinkTarget}*/ let target;
|
||||
if(possibleTargets.length) {
|
||||
if(flowId) {
|
||||
possibleTargets = possibleTargets.filter(e => e.flowId == flowId);
|
||||
}
|
||||
}
|
||||
|
||||
name2id[lookupName] = id;
|
||||
id2target[id] = {
|
||||
lookupName,
|
||||
nodeName,
|
||||
flowName,
|
||||
id
|
||||
}
|
||||
return id2target[id];
|
||||
},
|
||||
remove(node) {
|
||||
if(node.name) console.log(`Removing node '${targetCache.generateLookupName(node)}' (${node.id})`)
|
||||
const target = id2target[node.id];
|
||||
targetCache._removeById(node.id);
|
||||
if(target) {
|
||||
targetCache._removeById(target.id);
|
||||
targetCache._removeByName(target.lookupName);
|
||||
}
|
||||
},
|
||||
getTarget(lookupName) {
|
||||
const id = name2id[lookupName];
|
||||
const target = id2target[id];
|
||||
if(possibleTargets.length === 1) {
|
||||
target = possibleTargets[0];
|
||||
}
|
||||
return target;
|
||||
},
|
||||
verify(cachedTarget, targetNode, nodeName, flowName) {
|
||||
cachedTarget = cachedTarget || {};
|
||||
targetNode = targetNode || {};
|
||||
const _lookupName = targetCache.generateLookupName(nodeName, flowName);
|
||||
const cachedId = name2id[_lookupName];
|
||||
|
||||
const idOK = cachedTarget.id === targetNode.id && cachedId === targetNode.id;
|
||||
const nodeNameOK = nodeName === cachedTarget.nodeName && cachedTarget.nodeName == targetNode.name;
|
||||
const flowNameOK = flowName === cachedTarget.flowName && cachedTarget.flowName == targetNode._flow.flow.label;
|
||||
const lookupNameOK = _lookupName === cachedTarget.lookupName;
|
||||
if(idOK && nodeNameOK && flowNameOK && lookupNameOK) {
|
||||
return true;
|
||||
/**
|
||||
* Get a target by node ID
|
||||
* @param {string} nodeId ID of the node
|
||||
* @returns {LinkTarget} target
|
||||
*/
|
||||
getTargetById(nodeId) {
|
||||
return registry.ids[nodeId];
|
||||
},
|
||||
register(/** @type {LinkInNode} */ node) {
|
||||
const target = generateTarget(node);
|
||||
const tByName = this.getTarget(target.name, target.flowId);
|
||||
if(!tByName) {
|
||||
registry.named[target.name] = registry.named[target.name] || [];
|
||||
registry.named[target.name].push(target)
|
||||
}
|
||||
console.warn(`verify(cachedTarget, targetNode, nodeName, flowName) failed: `, {cachedTarget, targetNode, nodeName, flowName})
|
||||
console.warn(`> idOK:${idOK}, nodeNameOK:${nodeNameOK}, flowNameOK:${flowNameOK}, lookupNameOK:${lookupNameOK}`)
|
||||
targetCache._removeById(targetNode.id);
|
||||
targetCache._removeById(cachedId);
|
||||
targetCache._removeByName(_lookupName);
|
||||
targetCache._removeByName(cachedTarget.lookupName);
|
||||
return false;
|
||||
registry.ids[target.id] = target;
|
||||
return target;
|
||||
},
|
||||
_removeById(id) {
|
||||
if(!id) {
|
||||
return;
|
||||
remove(node) {
|
||||
const target = generateTarget(node);
|
||||
const tn = this.getTarget(target.name, target.flowId);
|
||||
if(tn) {
|
||||
const targs = this.getTargets(tn.name);
|
||||
const idx = getIndex(targs, tn.id);
|
||||
if(idx > -1) {
|
||||
targs.splice(idx,1);
|
||||
}
|
||||
}
|
||||
const target = id2target[id];
|
||||
if(target && target.lookupName) {
|
||||
delete name2id[target.lookupName];
|
||||
}
|
||||
delete id2target[id];
|
||||
},
|
||||
_removeByName(lookupName) {
|
||||
if(!lookupName) {
|
||||
return;
|
||||
}
|
||||
var id = name2id[lookupName];
|
||||
var target = id2target[id];
|
||||
if(id) {
|
||||
delete id2target[id];
|
||||
}
|
||||
if(target && target.lookupName) {
|
||||
delete name2id[target.lookupName];
|
||||
}
|
||||
delete name2id[lookupName];
|
||||
delete registry.ids[target.id];
|
||||
},
|
||||
clear() {
|
||||
name2id = {};
|
||||
id2target = {};
|
||||
registry = { ids: {}, named: {}};
|
||||
}
|
||||
}
|
||||
})();
|
||||
@ -126,20 +126,7 @@ module.exports = function(RED) {
|
||||
msg._event = n.event;
|
||||
node.receive(msg);
|
||||
}
|
||||
//update target cache for link calls
|
||||
function updateCache(o) {
|
||||
console.log(node.id, node.name, o.config.rev, o)
|
||||
const changed = o.diff.changed.includes(node.id);
|
||||
const added = o.diff.added.includes(node.id);
|
||||
if(changed) {
|
||||
targetCache.remove(node);
|
||||
}
|
||||
if((changed || added) && node.name) {
|
||||
targetCache.add(node);
|
||||
}
|
||||
}
|
||||
|
||||
RED.events.on("flows:started", updateCache);
|
||||
targetCache.register(node);
|
||||
RED.events.on(event,handler);
|
||||
this.on("input", function(msg, send, done) {
|
||||
send(msg);
|
||||
@ -197,41 +184,27 @@ module.exports = function(RED) {
|
||||
timeout = 30000;
|
||||
}
|
||||
function findNode(target) {
|
||||
let foundNode = null;
|
||||
switch (typeof target) {
|
||||
case "string":
|
||||
const nameParts = target.split("/");
|
||||
switch (nameParts.length) {
|
||||
case 1:
|
||||
target = { nodeName: nameParts[0], flowName: node._flow.flow.label }
|
||||
break;
|
||||
case 2:
|
||||
target = { nodeName: nameParts[1], flowName: nameParts[0] }
|
||||
break;
|
||||
default:
|
||||
target = { nodeName: target, flowName: node._flow.flow.label }
|
||||
let foundNode = RED.nodes.getNode(target); //1st see if the target is a direct node id
|
||||
if(!foundNode) {
|
||||
//first look in this flow for the node
|
||||
let cachedTarget = targetCache.getTarget(target, node._flow.flow.id);
|
||||
if(!cachedTarget) {
|
||||
//single target node not found in registry! get all possible targets
|
||||
const possibleTargets = targetCache.getTargets(target);
|
||||
if(possibleTargets.length === 1) {
|
||||
cachedTarget = possibleTargets[0];
|
||||
} else if (possibleTargets.length > 1) {
|
||||
throw new Error(`Multiple link-in nodes named '${target}' found`);
|
||||
}
|
||||
case "object":
|
||||
break;
|
||||
default:
|
||||
throw new Error("Invalid target");
|
||||
}
|
||||
if(!target.nodeName || typeof target.nodeName !== "string") {
|
||||
throw new Error("Link call target name invalid")
|
||||
}
|
||||
if(!target.flowName || typeof target.flowName !== "string") {
|
||||
throw new Error("Link call target flow name invalid")
|
||||
}
|
||||
const lookupName = targetCache.generateLookupName(target.nodeName, target.flowName);
|
||||
//const targetNode = targetCache.getNode(lookupName);
|
||||
const cachedTarget = targetCache.getTarget(lookupName);
|
||||
if (cachedTarget) {
|
||||
foundNode = RED.nodes.getNode(cachedTarget.id);
|
||||
if (targetCache.verify(cachedTarget, foundNode, target.nodeName, target.flowName)) {
|
||||
return foundNode;
|
||||
}
|
||||
if (cachedTarget) {
|
||||
foundNode = RED.nodes.getNode(cachedTarget.id);
|
||||
}
|
||||
}
|
||||
throw new Error(`Link in node not found: ${lookupName}`);
|
||||
if(foundNode instanceof LinkInNode) {
|
||||
return foundNode;
|
||||
}
|
||||
throw new Error(`link-in node '${target}' not found`);
|
||||
}
|
||||
this.on("input", function(msg, send, done) {
|
||||
try {
|
||||
|
||||
Loading…
Reference in New Issue
Block a user