Merge pull request #576 from Belphemur/function-logger

Adding an Object Node to the sandbox of a function node

nodes/core/core/58-debug.html

@@ -196,8 +196,14 @@
                                 '</span>';
                 // NOTE: relying on function error to have a "type" that all other msgs don't
                 if (o.hasOwnProperty("type") && (o.type === "function")) {
-                    msg.className = 'debug-message debug-message-level-20';
-                    msg.innerHTML += '<span class="debug-message-topic">[function] : (error)</span>';
+                    var errorLvlType = 'error';
+                    var errorLvl = 20;
+                    if (o.hasOwnProperty("level") && o.level === 30) {
+                        errorLvl = 30;
+                        errorLvlType = 'warn'
+                    }
+                    msg.className = 'debug-message debug-message-level-' + errorLvl;
+                    msg.innerHTML += '<span class="debug-message-topic">[function] : (' + errorLvlType + ')</span>';
                 } else {
                     msg.innerHTML += '<span class="debug-message-topic">'+(o.topic?topic+' : ':'')+
                                     (o.property?'[msg.'+property+']':'[msg]')+" : "+typ+'</span>';

nodes/core/core/80-function.html

@@ -39,6 +39,13 @@
     <p>The message is passed in as a JavaScript object called <code>msg</code>.</p>
     <p>By convention it will have a <code>msg.payload</code> property containing
        the body of the message.</p>
+    <p>If your node need to log anything use the <code>node</code> object:
+        <ul>
+            <li>Info: <code>node.log(msg);</code></li>
+            <li>Warning: <code>node.warn(msg);</code></li>
+            <li>Error: <code>node.error(msg);</code></li>
+        </ul>
+    </p>
     <p>The function should return the messages it wants to pass on to the next nodes
     in the flow. It can return:</p>
     <ul>

nodes/core/core/80-function.js

@@ -21,6 +21,7 @@ module.exports = function(RED) {
 
     function FunctionNode(n) {
         RED.nodes.createNode(this,n);
+        var node = this;
         this.name = n.name;
         this.func = n.func;
         var functionText = "var results = null; results = (function(msg){\n"+this.func+"\n})(msg);";
@@ -29,6 +30,17 @@ module.exports = function(RED) {
             console:console,
             util:util,
             Buffer:Buffer,
+            node: {
+                log : function() {
+                    node.log.apply(node, arguments);
+                },
+                error: function(){
+                    node.error.apply(node, arguments);
+                },
+                warn: function() {
+                    node.warn.apply(node, arguments);
+                }
+            },
             context: {
                 global:RED.settings.functionGlobalContext || {}
             }