Added metricsPrev to onLag event

nachooya · Apr 14, 2017 · 852ed24 · 852ed24
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commit 852ed24
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Showing 4 changed files with 9 additions and 3 deletions.
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,3 +1,6 @@
+### 0.6.1
+  * Added metricsPrev paramater to `onLag` event. Thanks @nachooya
+
 ### 0.6.0
   * Added metrics `metrics(name, value)`. Thanks @nachooya
 

diff --git a/README.md b/README.md
@@ -94,9 +94,10 @@ toobusy.metric ('bar', 100);
 // Get current maxLag or interval setting by calling without parameters.
 var currentMaxLag = toobusy.maxLag(), interval = toobusy.interval();
 
-toobusy.onLag(function(currentLag, metrics) {
+toobusy.onLag(function(currentLag, metrics, metricsPrev) {
   console.log("Event loop lag detected! Latency: " + currentLag + "ms");
   console.log("Metrics during interval: ", metrics);
+  console.log("Metrics previous interval: ", metricsPrev);
 });
 ```
 

diff --git a/package.json b/package.json
@@ -2,7 +2,7 @@
   "name": "toobusy-why",
   "description": "Don't fall over when your Node.JS server is too busy. Now without native dependencies and metrics support!",
   "homepage": "https://github.com/nachooya/node-toobusy",
-  "version": "0.6.0",
+  "version": "0.6.1",
   "dependencies": {},
   "devDependencies": {
     "mocha": "1.7.0",

diff --git a/toobusy.js b/toobusy.js
@@ -28,6 +28,7 @@ var checkInterval;
 var lagEventThreshold = -1;
 var eventEmitter = new events.EventEmitter();
 var metrics = {};
+var metricsPrev = {};
 
 /**
  * Main export function.
@@ -163,9 +164,10 @@ function start() {
     lastTime = now;
 
     if (lagEventThreshold !== -1 && currentLag > lagEventThreshold) {
-      eventEmitter.emit(LAG_EVENT, currentLag, metrics);
+      eventEmitter.emit(LAG_EVENT, currentLag, metrics, metricsPrev);
     }
 
+    metricsPrev = metrics;
     metrics = {};
 
   }, interval);