Add CPU watchdog feature (#280)

Add the CPU watchdog feature to for issue #280

Author: sjanuary

index.js

@@ -204,6 +204,10 @@ module.exports.setConfig = function (data, config) {
             })
         }
         break;
+    case 'advancedProfiling':
+        if(typeof(config.threshold) !== 'undefined')
+            agent.sendControlCommand("profiling_node", config.threshold + ",profiling_node_threshold");
+        break;
     default:
         probes.forEach(function (probe) {
             if (probe.name == data) {

src/appmetrics.cpp

@@ -25,6 +25,7 @@
 
 #if NODE_VERSION_AT_LEAST(0, 11, 0) // > v0.11+
 #include "objecttracker.hpp"
+#include "plugins/node/prof/watchdog.h"
 #endif
 
 #include <string>
@@ -460,7 +461,7 @@ NAN_METHOD(nativeEmit) {
 }
 
 NAN_METHOD(sendControlCommand) {
-    
+
     if (!isMonitorApiValid()) {
         Nan::ThrowError("Monitoring API is not initialized");
         return;
@@ -678,6 +679,10 @@ void init(Handle<Object> exports, Handle<Object> module) {
     loaderApi->setProperty("agentcore.version", loaderApi->getAgentVersion());
     loaderApi->setProperty("appmetrics.version", APPMETRICS_VERSION);
 
+    /* Initialize watchdog directly so that bindings can be created */
+    Isolate* isolate = v8::Isolate::GetCurrent();
+    watchdog::Initialize(isolate, exports);
+
     /*
      * Log startup message with version information
      */