feat(sdk-trace-base): add dropped attributes and events count on span

experimental/packages/exporter-trace-otlp-grpc/test/traceHelper.ts

@@ -91,6 +91,9 @@ export const mockedReadableSpan: ReadableSpan = {
     })
   ),
   instrumentationLibrary: { name: 'default', version: '0.0.1' },
+  droppedAttributesCount: 0,
+  droppedEventsCount: 0,
+  droppedLinksCount: 0,
 };
 
 export function ensureExportedEventsAreCorrect(events: IEvent[]) {

experimental/packages/exporter-trace-otlp-http/test/traceHelper.ts

@@ -102,6 +102,9 @@ export const mockedReadableSpan: ReadableSpan = {
     })
   ),
   instrumentationLibrary: { name: 'default', version: '0.0.1' },
+  droppedAttributesCount: 0,
+  droppedEventsCount: 0,
+  droppedLinksCount: 0,
 };
 
 export const mockedResources: Resource[] = [
@@ -142,6 +145,9 @@ export const basicTrace: ReadableSpan[] = [
     duration: [0, 8885000],
     resource: mockedResources[0],
     instrumentationLibrary: mockedInstrumentationLibraries[0],
+    droppedAttributesCount: 0,
+    droppedEventsCount: 0,
+    droppedLinksCount: 0,
   },
   {
     name: 'span2',
@@ -164,6 +170,9 @@ export const basicTrace: ReadableSpan[] = [
     duration: [0, 8775000],
     resource: mockedResources[0],
     instrumentationLibrary: mockedInstrumentationLibraries[0],
+    droppedAttributesCount: 0,
+    droppedEventsCount: 0,
+    droppedLinksCount: 0,
   },
   {
     name: 'span3',
@@ -186,6 +195,9 @@ export const basicTrace: ReadableSpan[] = [
     duration: [0, 8775000],
     resource: mockedResources[0],
     instrumentationLibrary: mockedInstrumentationLibraries[0],
+    droppedAttributesCount: 0,
+    droppedEventsCount: 0,
+    droppedLinksCount: 0,
   },
 ];
 

experimental/packages/exporter-trace-otlp-proto/test/traceHelper.ts

@@ -87,6 +87,9 @@ export const mockedReadableSpan: ReadableSpan = {
     cost: 112.12,
   }),
   instrumentationLibrary: { name: 'default', version: '0.0.1' },
+  droppedAttributesCount: 0,
+  droppedEventsCount: 0,
+  droppedLinksCount: 0,
 };
 
 export function ensureProtoEventsAreCorrect(events: IEvent[]) {

experimental/packages/otlp-grpc-exporter-base/test/traceHelper.ts

@@ -91,6 +91,9 @@ export const mockedReadableSpan: ReadableSpan = {
     })
   ),
   instrumentationLibrary: { name: 'default', version: '0.0.1' },
+  droppedAttributesCount: 0,
+  droppedEventsCount: 0,
+  droppedLinksCount: 0,
 };
 
 export function ensureExportedEventsAreCorrect(events: IEvent[]) {

experimental/packages/otlp-proto-exporter-base/tsconfig.esnext.json

@@ -1,9 +1,8 @@
 {
   "extends": "../../../tsconfig.base.esnext.json",
   "compilerOptions": {
-    "allowJs": true,
-    "outDir": "build/esnext",
     "rootDir": "src",
+    "outDir": "build/esnext",
     "tsBuildInfoFile": "build/esnext/tsconfig.esnext.tsbuildinfo"
   },
   "include": [

experimental/packages/otlp-transformer/src/trace/internal.ts

@@ -39,16 +39,16 @@ export function sdkSpanToOtlpSpan(span: ReadableSpan, useHex?: boolean): ISpan {
     startTimeUnixNano: hrTimeToNanoseconds(span.startTime),
     endTimeUnixNano: hrTimeToNanoseconds(span.endTime),
     attributes: toAttributes(span.attributes),
-    droppedAttributesCount: 0,
+    droppedAttributesCount: span.droppedAttributesCount,
     events: span.events.map(toOtlpSpanEvent),
-    droppedEventsCount: 0,
+    droppedEventsCount: span.droppedEventsCount,
     status: {
       // API and proto enums share the same values
       code: status.code as unknown as EStatusCode,
       message: status.message,
     },
     links: span.links.map(link => toOtlpLink(link, useHex)),
-    droppedLinksCount: 0,
+    droppedLinksCount: span.droppedLinksCount,
   };
 }
 

experimental/packages/otlp-transformer/test/trace.test.ts

@@ -178,6 +178,9 @@ describe('Trace', () => {
         status: {
           code: SpanStatusCode.OK,
         },
+        droppedAttributesCount: 0,
+        droppedEventsCount: 0,
+        droppedLinksCount: 0,
       };
     });
 

packages/opentelemetry-exporter-jaeger/src/transform.ts

@@ -86,6 +86,30 @@ export function spanToThrift(span: ReadableSpan): ThriftSpan {
     });
   }
 
+  /* Add droppedAttributesCount as a tag */
+  if (span.droppedAttributesCount) {
+    tags.push({
+      key: 'otel.dropped_attributes_count',
+      value: toTagValue(span.droppedAttributesCount),
+    });
+  }
+
+  /* Add droppedEventsCount as a tag */
+  if (span.droppedEventsCount) {
+    tags.push({
+      key: 'otel.dropped_events_count',
+      value: toTagValue(span.droppedEventsCount),
+    });
+  }
+
+  /* Add droppedLinksCount as a tag */
+  if (span.droppedLinksCount) {
+    tags.push({
+      key: 'otel.dropped_links_count',
+      value: toTagValue(span.droppedLinksCount),
+    });
+  }
+
   const spanTags: ThriftTag[] = ThriftUtils.getThriftTags(tags);
 
   const logs = span.events.map((event): Log => {

packages/opentelemetry-exporter-jaeger/test/jaeger.test.ts

@@ -53,6 +53,9 @@ describe('JaegerExporter', () => {
       name: 'default',
       version: '0.0.1',
     },
+    droppedAttributesCount: 0,
+    droppedEventsCount: 0,
+    droppedLinksCount: 0,
   };
   describe('constructor', () => {
     afterEach(() => {

packages/opentelemetry-exporter-jaeger/test/transform.test.ts

@@ -82,6 +82,9 @@ describe('transform', () => {
           name: 'default',
           version: '0.0.1',
         },
+        droppedAttributesCount: 0,
+        droppedEventsCount: 0,
+        droppedLinksCount: 0,
       };
 
       const thriftSpan = spanToThrift(readableSpan);
@@ -179,6 +182,9 @@ describe('transform', () => {
           name: 'default',
           version: '0.0.1',
         },
+        droppedAttributesCount: 0,
+        droppedEventsCount: 0,
+        droppedLinksCount: 0,
       };
 
       const thriftSpan = spanToThrift(readableSpan);
@@ -246,6 +252,9 @@ describe('transform', () => {
           name: 'default',
           version: '0.0.1',
         },
+        droppedAttributesCount: 0,
+        droppedEventsCount: 0,
+        droppedLinksCount: 0,
       };
 
       const thriftSpan = spanToThrift(readableSpan);
@@ -291,6 +300,9 @@ describe('transform', () => {
           name: 'default',
           version: '0.0.1',
         },
+        droppedAttributesCount: 0,
+        droppedEventsCount: 0,
+        droppedLinksCount: 0,
       };
 
       const thriftSpan = spanToThrift(readableSpan);
@@ -353,6 +365,9 @@ describe('transform', () => {
           name: 'default',
           version: '0.0.1',
         },
+        droppedAttributesCount: 0,
+        droppedEventsCount: 0,
+        droppedLinksCount: 0,
       };
       let thriftSpan = spanToThrift(readableSpan);
       assert.strictEqual(

packages/opentelemetry-exporter-zipkin/src/transform.ts

@@ -18,7 +18,6 @@ import * as api from '@opentelemetry/api';
 import { ReadableSpan, TimedEvent } from '@opentelemetry/sdk-trace-base';
 import { hrTimeToMicroseconds } from '@opentelemetry/core';
 import * as zipkinTypes from './types';
-import { Resource } from '@opentelemetry/resources';
 
 const ZIPKIN_SPAN_KIND_MAPPING = {
   [api.SpanKind.CLIENT]: zipkinTypes.SpanKind.CLIENT,
@@ -51,13 +50,7 @@ export function toZipkinSpan(
     timestamp: hrTimeToMicroseconds(span.startTime),
     duration: hrTimeToMicroseconds(span.duration),
     localEndpoint: { serviceName },
-    tags: _toZipkinTags(
-      span.attributes,
-      span.status,
-      statusCodeTagName,
-      statusErrorTagName,
-      span.resource
-    ),
+    tags: _toZipkinTags(span, statusCodeTagName, statusErrorTagName),
     annotations: span.events.length
       ? _toZipkinAnnotations(span.events)
       : undefined,
@@ -66,13 +59,18 @@ export function toZipkinSpan(
   return zipkinSpan;
 }
 
-/** Converts OpenTelemetry SpanAttributes and SpanStatus to Zipkin Tags format. */
+/** Converts OpenTelemetry Span properties to Zipkin Tags format. */
 export function _toZipkinTags(
-  attributes: api.SpanAttributes,
-  status: api.SpanStatus,
+  {
+    attributes,
+    resource,
+    status,
+    droppedAttributesCount,
+    droppedEventsCount,
+    droppedLinksCount,
+  }: ReadableSpan,
   statusCodeTagName: string,
-  statusErrorTagName: string,
-  resource: Resource
+  statusErrorTagName: string
 ): zipkinTypes.Tags {
   const tags: { [key: string]: string } = {};
   for (const key of Object.keys(attributes)) {
@@ -84,6 +82,20 @@ export function _toZipkinTags(
   if (status.code === api.SpanStatusCode.ERROR && status.message) {
     tags[statusErrorTagName] = status.message;
   }
+  /* Add droppedAttributesCount as a tag */
+  if (droppedAttributesCount) {
+    tags['otel.dropped_attributes_count'] = String(droppedAttributesCount);
+  }
+
+  /* Add droppedEventsCount as a tag */
+  if (droppedEventsCount) {
+    tags['otel.dropped_events_count'] = String(droppedEventsCount);
+  }
+
+  /* Add droppedLinksCount as a tag */
+  if (droppedLinksCount) {
+    tags['otel.dropped_links_count'] = String(droppedLinksCount);
+  }
 
   Object.keys(resource.attributes).forEach(
     name => (tags[name] = String(resource.attributes[name]))