Remove min/max from Distribution (#212)

Author: mayurkale22

CHANGELOG.md

@@ -7,6 +7,7 @@ All notable changes to this project will be documented in this file.
 - Fix bugs related to Stackdriver Metrics Descriptor and TimeSeries.
 - Add Resource API.
 - Add Metrics API.
+- Remove support for `min`/`max` in the stats Distribution to make it compatible with Metrics.
 
 ## 0.0.7 - 2018-11-12
  **Contains API breaking changes for stats/metrics implementations**

packages/opencensus-core/src/stats/recorder.ts

@@ -50,17 +50,8 @@ export class Recorder {
     if (bucketIndex < 0) {
       bucketIndex = distributionData.buckets.length;
     }
-
     distributionData.bucketCounts[bucketIndex] += 1;
 
-    if (value > distributionData.max) {
-      distributionData.max = value;
-    }
-
-    if (value < distributionData.min) {
-      distributionData.min = value;
-    }
-
     if (distributionData.count === 1) {
       distributionData.mean = value;
     }
@@ -94,4 +85,4 @@ export class Recorder {
     lastValueData.value = value;
     return lastValueData;
   }
-}
+}

packages/opencensus-core/src/stats/types.ts

@@ -174,10 +174,6 @@ export interface DistributionData extends AggregationMetadata {
   count: number;
   /** Sum of all recorded values in the histogram */
   sum: number;
-  /** Max value recorded in the histogram */
-  max: number;
-  /** Min value recorded in the histogram */
-  min: number;
   /** Get the computed mean value of all recorded values in the histogram */
   mean: number;
   /**

packages/opencensus-core/src/stats/view.ts

@@ -166,8 +166,6 @@ export class BaseView implements View {
           startTime: this.startTime,
           count: 0,
           sum: 0,
-          max: Number.MIN_SAFE_INTEGER,
-          min: Number.MAX_SAFE_INTEGER,
           mean: null as number,
           stdDeviation: null as number,
           sumOfSquaredDeviation: null as number,

packages/opencensus-core/test/test-recorder.ts

@@ -35,8 +35,6 @@ function assertDistributionData(
     distributionData: DistributionData, values: number[]) {
   const valuesSum = values.reduce((acc, cur) => acc + cur);
 
-  assert.strictEqual(distributionData.max, Math.max(...values));
-  assert.strictEqual(distributionData.min, Math.min(...values));
   assert.strictEqual(distributionData.count, values.length);
   assert.strictEqual(distributionData.sum, valuesSum);
 
@@ -157,8 +155,6 @@ describe('Recorder', () => {
                    startTime: Date.now(),
                    count: 0,
                    sum: 0,
-                   max: Number.MIN_SAFE_INTEGER,
-                   min: Number.MAX_SAFE_INTEGER,
                    mean: 0,
                    stdDeviation: 0,
                    sumOfSquaredDeviation: 0,

packages/opencensus-core/test/test-view.ts

@@ -36,8 +36,6 @@ function assertDistributionData(
     distributionData: DistributionData, values: number[]) {
   const valuesSum = values.reduce((acc, cur) => acc + cur);
 
-  assert.strictEqual(distributionData.max, Math.max(...values));
-  assert.strictEqual(distributionData.min, Math.min(...values));
   assert.strictEqual(distributionData.count, values.length);
   assert.strictEqual(distributionData.sum, valuesSum);
 

packages/opencensus-exporter-zpages/templates/statsz-view-distribution.ejs

@@ -21,8 +21,6 @@
                     <? } ?>  
                     <td class="borderRL"><?= data.snapshot.mean ?></td>
                     <td class="borderRL"><?= data.snapshot.count ?></td>
-                    <td class="borderRL"><?= data.snapshot.max ?></td>
-                    <td class="borderRL"><?= data.snapshot.min ?></td>
                     <td class="borderRL"><?= data.snapshot.sumOfSquaredDeviation ?></td>
                     <td class="borderRL">
                         <table>

packages/opencensus-exporter-zpages/test/test-zpages.ts

@@ -406,8 +406,6 @@ describe('Zpages Exporter', () => {
         assert.equal(data.tagValues[0], tagValues[0]);
         assert.equal(data.tagValues[1], tagValues[1]);
         assert.equal(snapshot.count, 2);
-        assert.equal(snapshot.max, 22);
-        assert.equal(snapshot.min, 11);
         assert.equal(snapshot.mean, 16.5);
         assert.equal(snapshot.sumOfSquaredDeviation, 60.5);
       });