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Fix for Debug node circular references (Issue 17) - Also now limit debug message length ...(more). Added debugMaxLength setting to settings.js - default 512 - so can be overridden if required. (no doubt this will change)

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This commit is contained in:
Dave C-J 2013-09-16 18:00:33 +01:00
parent 939178720a
commit 6fc2555a2f
1 changed files with 18 additions and 3 deletions
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21
nodes/core/58-debug.js
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@ -19,6 +19,7 @@ var RED = require("../../red/red");
var util = require("util"); var util = require("util");
var ws = require('ws'); var ws = require('ws');
var events = require("events"); var events = require("events");
var debuglength = RED.settings.debugMaxLength||512;
function DebugNode(n) { function DebugNode(n) {
RED.nodes.createNode(this,n); RED.nodes.createNode(this,n);
@ -50,14 +51,28 @@ DebugNode.send = function(msg) {
msg.msg = "(Object) "+JSON.stringify(msg.msg,null,1); msg.msg = "(Object) "+JSON.stringify(msg.msg,null,1);
} }
catch (err) { catch (err) {
console.log(msg.msg); // DCJ - either can just report the circularity...
console.log(err); //msg.msg = "[Error] Can't stringify object with circular reference - see console log.";
msg.msg = "[Error] Can't stringify object with circular reference - see console log."; // or dump out bits we can... (but things like http are mahoosive objects)
var seen = [];
msg.msg = "(Circular Object) " + JSON.stringify(msg.msg, function(key, value) {
if (typeof value === 'object' && value !== null) {
if (seen.indexOf(value) !== -1) { return; }
seen.push(value);
}
return value;
});
seen = null;
} }
} }
else if (typeof msg.msg === "boolean") msg.msg = "(boolean) "+msg.msg.toString(); else if (typeof msg.msg === "boolean") msg.msg = "(boolean) "+msg.msg.toString();
else if (msg.msg === 0) msg.msg = "0"; else if (msg.msg === 0) msg.msg = "0";
if (msg.msg.length > debuglength) {
msg.msg = msg.msg.substr(0,debuglength) +" ...(more)";
}
for (var i in DebugNode.activeConnections) { for (var i in DebugNode.activeConnections) {
var ws = DebugNode.activeConnections[i]; var ws = DebugNode.activeConnections[i];
try { try {