refactor(exporters): introduce packages for shared exporter classes

.gitmodules

@@ -1,12 +1,6 @@
-[submodule "experimental/packages/exporter-trace-otlp-proto/protos"]
-	path = experimental/packages/exporter-trace-otlp-proto/protos
+[submodule "experimental/packages/otlp-grpc-exporter-base/protos"]
+	path = experimental/packages/otlp-grpc-exporter-base/protos
 	url = https://github.com/open-telemetry/opentelemetry-proto.git
-[submodule "experimental/packages/exporter-trace-otlp-grpc/protos"]
-	path = experimental/packages/exporter-trace-otlp-grpc/protos
-	url = https://github.com/open-telemetry/opentelemetry-proto.git
-[submodule "experimental/packages/opentelemetry-exporter-metrics-otlp-grpc/protos"]
-	path = experimental/packages/opentelemetry-exporter-metrics-otlp-grpc/protos
-	url = https://github.com/open-telemetry/opentelemetry-proto.git
-[submodule "experimental/packages/opentelemetry-exporter-metrics-otlp-proto/protos"]
-	path = experimental/packages/opentelemetry-exporter-metrics-otlp-proto/protos
+[submodule "experimental/packages/otlp-proto-exporter-base/protos"]
+	path = experimental/packages/otlp-proto-exporter-base/protos
 	url = https://github.com/open-telemetry/opentelemetry-proto.git

experimental/CHANGELOG.md

@@ -16,6 +16,10 @@ All notable changes to experimental packages in this project will be documented
   * updated `opentelemetry-sdk-node` to the latest Metrics SDK.
   * updated `otlp-transformer` to the latest Metrics SDK.
   * updated all `instrumentation-*` packages to use local implementations of `parseUrl()` due to #2884
+* refactor(otlp-exporters) move base classes and associated types into their own packages #2893 @pichlermarc
+  * `otlp-exporter-base` => `OTLPExporterBase`, `OTLPExporterBrowserBase`, `OTLPExporterNodeBase`
+  * `otlp-grpc-exporter-base` => `OTLPGRPCExporterNodeBase`
+  * `otlp-proto-exporter-base` => `OTLPProtoExporterNodeBase`
 
 ### :rocket: (Enhancement)
 

experimental/packages/exporter-trace-otlp-grpc/package.json

@@ -11,13 +11,10 @@
     "clean": "tsc --build --clean",
     "lint": "eslint . --ext .ts",
     "lint:fix": "eslint . --ext .ts --fix",
-    "postcompile": "npm run submodule && npm run protos:copy",
-    "protos:copy": "cpx protos/opentelemetry/**/*.* build/protos/opentelemetry",
-    "submodule": "git submodule sync --recursive && git submodule update --init --recursive",
     "tdd": "npm run test -- --watch-extensions ts --watch",
     "test": "nyc ts-mocha -p tsconfig.json 'test/**/*.test.ts'",
     "version": "node ../../../scripts/version-update.js",
-    "watch": "npm run protos:copy && tsc -w",
+    "watch": "tsc -w",
     "precompile": "lerna run version --scope $(npm pkg get name) --include-dependencies",
     "prewatch": "npm run precompile",
     "peer-api-check": "node ../../../scripts/peer-api-check.js",
@@ -52,6 +49,7 @@
   "devDependencies": {
     "@babel/core": "7.16.0",
     "@opentelemetry/api": "^1.0.0",
+    "@opentelemetry/otlp-exporter-base": "0.27.0",
     "@types/mocha": "8.2.3",
     "@types/node": "14.17.33",
     "@types/sinon": "10.0.6",
@@ -73,6 +71,7 @@
     "@grpc/grpc-js": "^1.5.9",
     "@grpc/proto-loader": "^0.6.9",
     "@opentelemetry/exporter-trace-otlp-http": "0.27.0",
+    "@opentelemetry/otlp-grpc-exporter-base": "0.27.0",
     "@opentelemetry/resources": "1.1.1",
     "@opentelemetry/sdk-trace-base": "1.1.1"
   }

experimental/packages/exporter-trace-otlp-grpc/src/OTLPTraceExporter.ts

@@ -15,29 +15,30 @@
  */
 
 import { ReadableSpan, SpanExporter } from '@opentelemetry/sdk-trace-base';
-import { OTLPExporterNodeBase } from './OTLPExporterNodeBase';
 import {
   otlpTypes,
   toOTLPExportTraceServiceRequest,
 } from '@opentelemetry/exporter-trace-otlp-http';
-import { OTLPExporterConfigNode, ServiceClientType } from './types';
 import { baggageUtils, getEnv } from '@opentelemetry/core';
-import { validateAndNormalizeUrl } from './util';
 import { Metadata } from '@grpc/grpc-js';
+import {
+  OTLPGRPCExporterConfigNode,
+  OTLPGRPCExporterNodeBase,
+  ServiceClientType,
+  validateAndNormalizeUrl
+} from '@opentelemetry/otlp-grpc-exporter-base';
 
 const DEFAULT_COLLECTOR_URL = 'localhost:4317';
 
 /**
  * OTLP Trace Exporter for Node
  */
 export class OTLPTraceExporter
-  extends OTLPExporterNodeBase<
-    ReadableSpan,
-    otlpTypes.opentelemetryProto.collector.trace.v1.ExportTraceServiceRequest
-  >
+  extends OTLPGRPCExporterNodeBase<ReadableSpan,
+    otlpTypes.opentelemetryProto.collector.trace.v1.ExportTraceServiceRequest>
   implements SpanExporter {
 
-  constructor(config: OTLPExporterConfigNode = {}) {
+  constructor(config: OTLPGRPCExporterConfigNode = {}) {
     super(config);
     const headers = baggageUtils.parseKeyPairsIntoRecord(getEnv().OTEL_EXPORTER_OTLP_TRACES_HEADERS);
     this.metadata ||= new Metadata();
@@ -52,14 +53,14 @@ export class OTLPTraceExporter
     return toOTLPExportTraceServiceRequest(spans, this);
   }
 
-  getDefaultUrl(config: OTLPExporterConfigNode) {
+  getDefaultUrl(config: OTLPGRPCExporterConfigNode) {
     return typeof config.url === 'string'
       ? validateAndNormalizeUrl(config.url)
       : getEnv().OTEL_EXPORTER_OTLP_TRACES_ENDPOINT.length > 0
-      ? validateAndNormalizeUrl(getEnv().OTEL_EXPORTER_OTLP_TRACES_ENDPOINT)
-      : getEnv().OTEL_EXPORTER_OTLP_ENDPOINT.length > 0
-      ? validateAndNormalizeUrl(getEnv().OTEL_EXPORTER_OTLP_ENDPOINT)
-      : DEFAULT_COLLECTOR_URL;
+        ? validateAndNormalizeUrl(getEnv().OTEL_EXPORTER_OTLP_TRACES_ENDPOINT)
+        : getEnv().OTEL_EXPORTER_OTLP_ENDPOINT.length > 0
+          ? validateAndNormalizeUrl(getEnv().OTEL_EXPORTER_OTLP_ENDPOINT)
+          : DEFAULT_COLLECTOR_URL;
   }
 
   getServiceClientType() {

experimental/packages/exporter-trace-otlp-grpc/src/index.ts

@@ -14,7 +14,4 @@
  * limitations under the License.
  */
 
-export * from './OTLPExporterNodeBase';
 export * from './OTLPTraceExporter';
-export { ServiceClientType, OTLPExporterConfigNode } from './types';
-export { validateAndNormalizeUrl } from './util';

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

@@ -35,12 +35,12 @@ import {
   ensureResourceIsCorrect,
   mockedReadableSpan,
 } from './traceHelper';
-
-import { CompressionAlgorithm } from '../src/types';
+import { CompressionAlgorithm } from '@opentelemetry/otlp-exporter-base';
+import { GrpcCompressionAlgorithm } from '@opentelemetry/otlp-grpc-exporter-base';
 
 const traceServiceProtoPath =
   'opentelemetry/proto/collector/trace/v1/trace_service.proto';
-const includeDirs = [path.resolve(__dirname, '../protos')];
+const includeDirs = [path.resolve(__dirname, '../../otlp-grpc-exporter-base/protos')];
 
 const address = 'localhost:1501';
 
@@ -267,7 +267,7 @@ const testCollectorExporter = (params: TestParams) =>
           credentials,
           metadata: params.metadata,
         });
-        assert.strictEqual(collectorExporter.compression, CompressionAlgorithm.GZIP);
+        assert.strictEqual(collectorExporter.compression, GrpcCompressionAlgorithm.GZIP);
         delete envSource.OTEL_EXPORTER_OTLP_COMPRESSION;
       });
     });
@@ -337,3 +337,5 @@ describe('when configuring via environment', () => {
 testCollectorExporter({ useTLS: true });
 testCollectorExporter({ useTLS: false });
 testCollectorExporter({ metadata });
+
+

experimental/packages/exporter-trace-otlp-grpc/tsconfig.json

@@ -20,6 +20,12 @@
     },
     {
       "path": "../exporter-trace-otlp-http"
+    },
+    {
+      "path": "../otlp-exporter-base"
+    },
+    {
+      "path": "../otlp-grpc-exporter-base"
     }
   ]
 }

experimental/packages/exporter-trace-otlp-http/package.json

@@ -96,6 +96,7 @@
   "dependencies": {
     "@opentelemetry/core": "1.1.1",
     "@opentelemetry/resources": "1.1.1",
-    "@opentelemetry/sdk-trace-base": "1.1.1"
+    "@opentelemetry/sdk-trace-base": "1.1.1",
+    "@opentelemetry/otlp-exporter-base": "0.27.0"
   }
 }

experimental/packages/exporter-trace-otlp-http/src/index.ts

@@ -14,8 +14,6 @@
  * limitations under the License.
  */
 
-export * from './OTLPExporterBase';
 export * from './platform';
 export * as otlpTypes from './types';
 export { toCollectorResource, toOTLPExportTraceServiceRequest } from './transform';
-export { appendResourcePathToUrlIfNotPresent } from './util';

experimental/packages/exporter-trace-otlp-http/src/platform/browser/OTLPTraceExporter.ts

@@ -14,13 +14,12 @@
  * limitations under the License.
  */
 
-import { OTLPExporterConfigBase } from '../../types';
-import { OTLPExporterBrowserBase } from './OTLPExporterBrowserBase';
+import { appendResourcePathToUrlIfNotPresent, OTLPExporterBrowserBase } from '@opentelemetry/otlp-exporter-base';
 import { ReadableSpan, SpanExporter } from '@opentelemetry/sdk-trace-base';
 import { toOTLPExportTraceServiceRequest } from '../../transform';
 import * as otlpTypes from '../../types';
 import { getEnv, baggageUtils } from '@opentelemetry/core';
-import { appendResourcePathToUrlIfNotPresent } from '../../util';
+import { OTLPExporterConfigBase } from '@opentelemetry/otlp-exporter-base';
 
 const DEFAULT_COLLECTOR_RESOURCE_PATH = '/v1/traces';
 const DEFAULT_COLLECTOR_URL=`http://localhost:4318${DEFAULT_COLLECTOR_RESOURCE_PATH}`;

experimental/packages/exporter-trace-otlp-http/src/platform/browser/index.ts

@@ -15,4 +15,3 @@
  */
 
 export * from './OTLPTraceExporter';
-export * from './OTLPExporterBrowserBase';

experimental/packages/exporter-trace-otlp-http/src/platform/index.ts

@@ -15,4 +15,3 @@
  */
 
 export * from './node';
-export { OTLPExporterBrowserBase } from './browser';

experimental/packages/exporter-trace-otlp-http/src/platform/node/OTLPTraceExporter.ts

@@ -15,24 +15,24 @@
  */
 
 import { ReadableSpan, SpanExporter } from '@opentelemetry/sdk-trace-base';
-import { OTLPExporterNodeBase } from './OTLPExporterNodeBase';
-import { OTLPExporterNodeConfigBase } from './types';
 import * as otlpTypes from '../../types';
 import { toOTLPExportTraceServiceRequest } from '../../transform';
 import { getEnv, baggageUtils } from '@opentelemetry/core';
-import { appendResourcePathToUrlIfNotPresent } from '../../util';
+import { OTLPExporterNodeBase } from '@opentelemetry/otlp-exporter-base';
+import {
+  OTLPExporterNodeConfigBase,
+  appendResourcePathToUrlIfNotPresent
+} from '@opentelemetry/otlp-exporter-base';
 
 const DEFAULT_COLLECTOR_RESOURCE_PATH = '/v1/traces';
-const DEFAULT_COLLECTOR_URL=`http://localhost:4318${DEFAULT_COLLECTOR_RESOURCE_PATH}`;
+const DEFAULT_COLLECTOR_URL = `http://localhost:4318${DEFAULT_COLLECTOR_RESOURCE_PATH}`;
 
 /**
  * Collector Trace Exporter for Node
  */
 export class OTLPTraceExporter
-  extends OTLPExporterNodeBase<
-    ReadableSpan,
-    otlpTypes.opentelemetryProto.collector.trace.v1.ExportTraceServiceRequest
-  >
+  extends OTLPExporterNodeBase<ReadableSpan,
+    otlpTypes.opentelemetryProto.collector.trace.v1.ExportTraceServiceRequest>
   implements SpanExporter {
   constructor(config: OTLPExporterNodeConfigBase = {}) {
     super(config);
@@ -50,13 +50,13 @@ export class OTLPTraceExporter
     return toOTLPExportTraceServiceRequest(spans, this, true);
   }
 
-  getDefaultUrl(config: OTLPExporterNodeConfigBase) : string {
+  getDefaultUrl(config: OTLPExporterNodeConfigBase): string {
     return typeof config.url === 'string'
       ? config.url
       : getEnv().OTEL_EXPORTER_OTLP_TRACES_ENDPOINT.length > 0
-      ? getEnv().OTEL_EXPORTER_OTLP_TRACES_ENDPOINT
-      : getEnv().OTEL_EXPORTER_OTLP_ENDPOINT.length > 0
-      ? appendResourcePathToUrlIfNotPresent(getEnv().OTEL_EXPORTER_OTLP_ENDPOINT, DEFAULT_COLLECTOR_RESOURCE_PATH)
-      : DEFAULT_COLLECTOR_URL;
+        ? getEnv().OTEL_EXPORTER_OTLP_TRACES_ENDPOINT
+        : getEnv().OTEL_EXPORTER_OTLP_ENDPOINT.length > 0
+          ? appendResourcePathToUrlIfNotPresent(getEnv().OTEL_EXPORTER_OTLP_ENDPOINT, DEFAULT_COLLECTOR_RESOURCE_PATH)
+          : DEFAULT_COLLECTOR_URL;
   }
 }

experimental/packages/exporter-trace-otlp-http/src/platform/node/index.ts

@@ -15,6 +15,3 @@
  */
 
 export * from './OTLPTraceExporter';
-export * from './OTLPExporterNodeBase';
-export * from './util';
-export * from './types';

experimental/packages/exporter-trace-otlp-http/src/transform.ts

@@ -24,12 +24,11 @@ import {
 import * as core from '@opentelemetry/core';
 import { Resource } from '@opentelemetry/resources';
 import { ReadableSpan, TimedEvent } from '@opentelemetry/sdk-trace-base';
-import { OTLPExporterBase } from './OTLPExporterBase';
 import {
   OTLP_SPAN_KIND_MAPPING,
   opentelemetryProto,
-  OTLPExporterConfigBase,
 } from './types';
+import { OTLPExporterBase, OTLPExporterConfigBase } from '@opentelemetry/otlp-exporter-base';
 
 const MAX_INTEGER_VALUE = 2147483647;
 const MIN_INTEGER_VALUE = -2147483648;

experimental/packages/exporter-trace-otlp-http/src/types.ts

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-import { SpanAttributes, SpanKind, SpanStatusCode } from '@opentelemetry/api';
+import { SpanKind, SpanStatusCode } from '@opentelemetry/api';
 
 /* eslint-disable @typescript-eslint/no-namespace */
 /* eslint-disable @typescript-eslint/no-unused-vars */
@@ -311,44 +311,6 @@ export namespace opentelemetryProto {
   }
 }
 
-/**
- * Interface for handling error
- */
-export class OTLPExporterError extends Error {
-  readonly code?: number;
-  override readonly name: string = 'OTLPExporterError';
-  readonly data?: string;
-
-  constructor(message?: string, code?: number, data?: string) {
-    super(message);
-    this.data = data;
-    this.code = code;
-  }
-}
-
-/**
- * Interface for handling export service errors
- */
-export interface ExportServiceError {
-  name: string;
-  code: number;
-  details: string;
-  metadata: { [key: string]: unknown };
-  message: string;
-  stack: string;
-}
-
-/**
- * Collector Exporter base config
- */
-export interface OTLPExporterConfigBase {
-  headers?: Partial<Record<string, unknown>>;
-  hostname?: string;
-  attributes?: SpanAttributes;
-  url?: string;
-  concurrencyLimit?: number;
-}
-
 /**
  * Mapping between api SpanKind and proto SpanKind
  */