From 5bfcc6f5893c88780ca3148dfd209d452ec9cb19 Mon Sep 17 00:00:00 2001
From: Jim Zhang <jzhang@us.ibm.com>
Date: Thu, 3 Nov 2016 11:27:58 -0400
Subject: [PATCH] Delete unused stats.js

this was a holdover from v0.6 code base. not used right now.

Change-Id: Ic0d327b6f260fb543303ab36bc8e51efcbb75572
Signed-off-by: Jim Zhang <jzhang@us.ibm.com>
---
 lib/Member.js |   1 -
 lib/stats.js  | 128 --------------------------------------------------
 2 files changed, 129 deletions(-)
 delete mode 100644 lib/stats.js

diff --git a/lib/Member.js b/lib/Member.js
index 4c0461db6d..2662a8355d 100644
--- a/lib/Member.js
+++ b/lib/Member.js
@@ -19,7 +19,6 @@
 var api = require('./api.js');
 var util = require('util');
 var fs = require('fs');
-var stats = require('./stats.js');
 var Peer = require('./Peer.js');
 var sdkUtils = require('./utils.js');
 var grpc = require('grpc');
diff --git a/lib/stats.js b/lib/stats.js
deleted file mode 100644
index 8e86a46cbc..0000000000
--- a/lib/stats.js
+++ /dev/null
@@ -1,128 +0,0 @@
-/**
- * Copyright 2016 IBM All Rights Reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *    http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS,
- *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
-/*
- * This module provides stats utilities.
- */
-
-/**
- * The Average class keeps a rolling average based on sample values.
- * The sample weight determines how heavily to weight the most recent sample in calculating the current average.
- */
-module.exports.Average = Average = function() {
-	this.setSampleWeight(0.5);
-};
-
-Average.prototype.getValue = function() {
-	return this.avg;
-};
-
-/**
- * Add a sample.
- */
-Average.prototype.addSample = function(sample) {
-	if (!this.avg || this.avg == null) {
-		this.avg = sample;
-	} else {
-		this.avg = (this.avg * this.avgWeight) + (sample * this.sampleWeight);
-	}
-};
-
-/**
- * Get the weight.
- * The weight determines how heavily to weight the most recent sample in calculating the average.
- */
-Average.prototype.getSampleWeight = function() {
-	return this.sampleWeight;
-};
-
-/**
- * Set the weight.
- * @params weight A value between 0 and 1.
- */
-Average.prototype.setSampleWeight = function(weight) {
-	if ((weight < 0) || (weight > 1)) {
-		throw Error('weight must be in range [0,1]; '+weight+' is an invalid value');
-	}
-	this.sampleWeight = weight;
-	this.avgWeight = 1 - weight;
-};
-
-/**
- * Class to keep track of an average response time.
- */
-module.exports.ResponseTime = ResponseTime = function() {
-	this.avg = new Average();
-	this.startTime = null;
-};
-
-ResponseTime.prototype.start = function() {
-	if (this.startTime != null) {
-		throw Error ('started twice without stopping');
-	}
-	this.startTime = getCurTimeInMs();
-};
-
-ResponseTime.prototype.stop = function() {
-	if (this.startTime == null) {
-		throw Error ('stopped without starting');
-	}
-
-	var elapsed = getCurTimeInMs() - this.startTime;
-	this.startTime = null;
-	this.avg.addSample(elapsed);
-};
-
-ResponseTime.prototype.cancel = function() {
-	if (this.startTime == null) {
-		throw Error ('cancel without starting');
-	}
-
-	this.startTime = null;
-};
-
-// Get the average response time
-ResponseTime.prototype.getValue = function() {
-	return this.avg.getValue();
-};
-
-/**
- * Calculate the rate
- */
-module.exports.Rate = Rate = function() {
-	this.prevTime = -1;
-	this.avg = new Average();
-	this.avg.setSampleWeight(0.25);
-};
-
-Rate.prototype.tick = function() {
-	var curTime = getCurTimeInMs();
-	if (this.prevTime) {
-		var elapsed = curTime - this.prevTime;
-		this.avg.addSample(elapsed);
-	}
-	this.prevTime = curTime;
-};
-
-// Get the rate in ticks/ms
-Rate.prototype.getValue = function() {
-	return this.avg.getValue();
-};
-
-// Get the current time in milliseconds
-function getCurTimeInMs() {
-	return (new Date()).getTime();
-}