feat!: Split metric and trace exporters into new experimental packages

.gitmodules

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

README.md

@@ -288,6 +288,12 @@ To request automatic tracing support for a module not on this list, please [file
 
 ### 0.26.x to 0.27.x
 
+Metric and trace exporters are split into separate packages:
+
+- `@opentelemetry/exporter-otlp-http` => `@opentelemetry/exporter-trace-otlp-http` and `@opentelemetry/exporter-metrics-otlp-http`
+- `@opentelemetry/exporter-otlp-grpc` => `@opentelemetry/exporter-trace-otlp-grpc` and `@opentelemetry/exporter-metrics-otlp-grpc`
+- `@opentelemetry/exporter-otlp-proto` => `@opentelemetry/exporter-trace-otlp-proto` and `@opentelemetry/exporter-metrics-otlp-proto`
+
 Metric types are renamed:
 
 - `@openetelemetry/api-metrics`

experimental/packages/opentelemetry-exporter-metrics-otlp-grpc/README.md

@@ -0,0 +1,77 @@
+# OpenTelemetry Collector Metrics Exporter for node with grpc
+
+[![NPM Published Version][npm-img]][npm-url]
+[![dependencies][dependencies-image]][dependencies-url]
+[![devDependencies][devDependencies-image]][devDependencies-url]
+[![Apache License][license-image]][license-image]
+
+This module provides exporter for web and node to be used with [opentelemetry-collector][opentelemetry-collector-url] - last tested with version **0.25.0**.
+
+## Installation
+
+```bash
+npm install --save @opentelemetry/exporter-metrics-otlp-grpc
+```
+
+## Service Name
+
+The OpenTelemetry Collector Exporter does not have a service name configuration.
+In order to set the service name, use the `service.name` resource attribute as prescribed in the [OpenTelemetry Resource Semantic Conventions][semconv-resource-service-name].
+To see sample code and documentation for the traces exporter, as well as instructions for using TLS, visit the [Collector Trace Exporter for web and node][trace-exporter-url].
+
+## Metrics in Node - GRPC
+
+The OTLPTraceExporter in Node expects the URL to only be the hostname. It will not work with `/v1/metrics`. All options that work with trace also work with metrics.
+
+```js
+const { MeterProvider } = require('@opentelemetry/sdk-metrics-base');
+const { OTLPMetricExporter } =  require('@opentelemetry/exporter-metrics-otlp-grpc');
+const collectorOptions = {
+  // url is optional and can be omitted - default is grpc://localhost:4317
+  url: 'grpc://<collector-hostname>:<port>',
+};
+const exporter = new OTLPMetricExporter(collectorOptions);
+
+// Register the exporter
+const provider = new MeterProvider({
+  exporter,
+  interval: 60000,
+})
+['SIGINT', 'SIGTERM'].forEach(signal => {
+  process.on(signal, () => provider.shutdown().catch(console.error));
+});
+
+// Now, start recording data
+const meter = provider.getMeter('example-meter');
+const counter = meter.createCounter('metric_name');
+counter.add(10, { 'key': 'value' });
+```
+
+## Running opentelemetry-collector locally to see the metrics
+
+1. Go to examples/otlp-exporter-node
+2. run `npm run docker:start`
+3. Open page at `http://localhost:9411/zipkin/` to observe the metrics
+
+## Useful links
+
+- For more information on OpenTelemetry, visit: <https://opentelemetry.io/>
+- For more about OpenTelemetry JavaScript: <https://github.com/open-telemetry/opentelemetry-js>
+- For help or feedback on this project, join us in [GitHub Discussions][discussions-url]
+
+## License
+
+Apache 2.0 - See [LICENSE][license-url] for more information.
+
+[discussions-url]: https://github.com/open-telemetry/opentelemetry-js/discussions
+[license-url]: https://github.com/open-telemetry/opentelemetry-js/blob/main/LICENSE
+[license-image]: https://img.shields.io/badge/license-Apache_2.0-green.svg?style=flat
+[dependencies-image]: https://status.david-dm.org/gh/open-telemetry/opentelemetry-js.svg?path=experimental%2Fpackages%2Fopentelemetry-exporter-metrics-otlp-grpc
+[dependencies-url]: https://david-dm.org/open-telemetry/opentelemetry-js?path=experimental%2Fpackages%2Fopentelemetry-exporter-metrics-otlp-grpc
+[devDependencies-image]: https://status.david-dm.org/gh/open-telemetry/opentelemetry-js.svg?path=experimental%2Fpackages%2Fopentelemetry-exporter-metrics-otlp-grpc&type=dev
+[devDependencies-url]: https://david-dm.org/open-telemetry/opentelemetry-js?path=experimental%2Fpackages%2Fopentelemetry-exporter-metrics-otlp-grpc&type=dev
+[npm-url]: https://www.npmjs.com/package/@opentelemetry/exporter-metrics-otlp-grpc
+[npm-img]: https://badge.fury.io/js/%40opentelemetry%2Fexporter-metrics-otlp-grpc.svg
+[opentelemetry-collector-url]: https://github.com/open-telemetry/opentelemetry-collector
+[semconv-resource-service-name]: https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/resource/semantic_conventions/README.md#service
+[trace-exporter-url]: https://github.com/open-telemetry/opentelemetry-js/tree/main/packages/opentelemetry-exporter-trace-otlp-grpc

experimental/packages/opentelemetry-exporter-metrics-otlp-grpc/package.json

@@ -0,0 +1,79 @@
+{
+  "name": "@opentelemetry/exporter-metrics-otlp-grpc",
+  "version": "0.26.0",
+  "description": "OpenTelemetry Collector Metrics Exporter allows user to send collected metrics to the OpenTelemetry Collector",
+  "main": "build/src/index.js",
+  "types": "build/src/index.d.ts",
+  "repository": "open-telemetry/opentelemetry-js",
+  "scripts": {
+    "compile": "tsc --build",
+    "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",
+    "precompile": "lerna run version --scope $(npm pkg get name) --include-filtered-dependencies",
+    "prewatch": "npm run precompile"
+  },
+  "keywords": [
+    "opentelemetry",
+    "nodejs",
+    "grpc",
+    "tracing",
+    "profiling",
+    "metrics",
+    "stats"
+  ],
+  "author": "OpenTelemetry Authors",
+  "license": "Apache-2.0",
+  "engines": {
+    "node": ">=8.0.0"
+  },
+  "files": [
+    "build/src/**/*.js",
+    "build/src/**/*.js.map",
+    "build/src/**/*.d.ts",
+    "build/protos/**/*.proto",
+    "doc",
+    "LICENSE",
+    "README.md"
+  ],
+  "publishConfig": {
+    "access": "public"
+  },
+  "devDependencies": {
+    "@babel/core": "7.15.0",
+    "@opentelemetry/api": "^1.0.2",
+    "@opentelemetry/api-metrics": "0.26.0",
+    "@types/mocha": "8.2.3",
+    "@types/node": "14.17.11",
+    "@types/sinon": "10.0.2",
+    "codecov": "3.8.3",
+    "cpx": "1.5.0",
+    "mocha": "7.2.0",
+    "nyc": "15.1.0",
+    "rimraf": "3.0.2",
+    "sinon": "11.1.2",
+    "ts-loader": "8.3.0",
+    "ts-mocha": "8.0.0",
+    "typescript": "4.3.5"
+  },
+  "peerDependencies": {
+    "@opentelemetry/api": "^1.0.2"
+  },
+  "dependencies": {
+    "@grpc/grpc-js": "^1.3.7",
+    "@grpc/proto-loader": "^0.6.4",
+    "@opentelemetry/core": "1.0.0",
+    "@opentelemetry/exporter-metrics-otlp-http": "0.26.0",
+    "@opentelemetry/exporter-trace-otlp-http": "0.26.0",
+    "@opentelemetry/exporter-trace-otlp-grpc": "0.26.0",
+    "@opentelemetry/sdk-metrics-base": "0.26.0",
+    "@opentelemetry/resources": "1.0.0"
+  }
+}

experimental/packages/opentelemetry-exporter-otlp-grpc/src/OTLPMetricExporter.ts → experimental/packages/opentelemetry-exporter-metrics-otlp-grpc/src/OTLPMetricExporter.ts

@@ -14,15 +14,16 @@
  * limitations under the License.
  */
 
-import {
-  otlpTypes,
-  toOTLPExportMetricServiceRequest,
-} from '@opentelemetry/exporter-otlp-http';
+import { otlpTypes } from '@opentelemetry/exporter-trace-otlp-http';
+import { toOTLPExportMetricServiceRequest } from '@opentelemetry/exporter-metrics-otlp-http'
 import { MetricRecord, MetricExporter } from '@opentelemetry/sdk-metrics-base';
-import { OTLPExporterConfigNode, ServiceClientType } from './types';
-import { OTLPExporterNodeBase } from './OTLPExporterNodeBase';
+import {
+  OTLPExporterConfigNode,
+  OTLPExporterNodeBase,
+  ServiceClientType,
+  validateAndNormalizeUrl
+} from '@opentelemetry/exporter-trace-otlp-grpc';
 import { baggageUtils, getEnv } from '@opentelemetry/core';
-import { validateAndNormalizeUrl } from './util';
 import { Metadata } from '@grpc/grpc-js';
 
 const DEFAULT_COLLECTOR_URL = 'localhost:4317';
@@ -58,7 +59,7 @@ export class OTLPMetricExporter
     );
   }
 
-  getDefaultUrl(config: OTLPExporterConfigNode) {
+  getDefaultUrl(config: OTLPExporterConfigNode): string {
     return typeof config.url === 'string'
       ? validateAndNormalizeUrl(config.url)
       : getEnv().OTEL_EXPORTER_OTLP_METRICS_ENDPOINT.length > 0
@@ -68,7 +69,7 @@ export class OTLPMetricExporter
       : DEFAULT_COLLECTOR_URL;
   }
 
-  getServiceClientType() {
+  getServiceClientType(): ServiceClientType {
     return ServiceClientType.METRICS;
   }
 

experimental/packages/opentelemetry-exporter-otlp-grpc/src/index.ts → experimental/packages/opentelemetry-exporter-metrics-otlp-grpc/src/index.ts

@@ -14,5 +14,4 @@
  * limitations under the License.
  */
 
-export * from './OTLPTraceExporter';
 export * from './OTLPMetricExporter';

experimental/packages/opentelemetry-exporter-metrics-otlp-grpc/submodule.md

@@ -0,0 +1,45 @@
+# Important
+
+**Submodule is always pointing to certain revision number. So updating the submodule repo will not have impact on your code.
+Knowing this if you want to change the submodule to point to a different version (when for example proto has changed) here is how to do it:**
+
+## Updating submodule to point to certain revision number
+
+1. Make sure you are in the same folder as this instruction
+
+2. Update your submodules by running this command
+
+    ```shell script
+    git submodule sync --recursive
+    git submodule update --init --recursive
+    ```
+
+3. Find the commit SHA which you want to update to and copy it (the long one)
+
+4. Enter a submodule directory from this directory
+
+    ```shell script
+    cd protos
+    ```
+
+5. Updates files in the submodule tree to given commit:
+
+    ```shell script
+    git checkout -q <sha>
+    ```
+
+6. Return to the main directory:
+
+    ```shell script
+    cd ../
+    ```
+
+7. Please run `git status` you should see something like `Head detached at`. This is correct, go to next step
+
+8. Now thing which is very important. You have to commit this to apply these changes
+
+    ```shell script
+    git commit -am "chore: updating submodule for opentelemetry-proto"
+    ```
+
+9. If you look now at git log you will notice that the folder `protos` has been changed and it will show what was the previous sha and what is current one.

experimental/packages/opentelemetry-exporter-otlp-grpc/test/OTLPMetricExporter.test.ts → experimental/packages/opentelemetry-exporter-metrics-otlp-grpc/test/OTLPMetricExporter.test.ts

@@ -21,7 +21,7 @@ import {
   Histogram,
 } from '@opentelemetry/api-metrics';
 import { diag } from '@opentelemetry/api';
-import { otlpTypes } from '@opentelemetry/exporter-otlp-http';
+import { otlpTypes } from '@opentelemetry/exporter-trace-otlp-http';
 import * as metrics from '@opentelemetry/sdk-metrics-base';
 import * as assert from 'assert';
 import * as fs from 'fs';
@@ -38,7 +38,7 @@ import {
   mockCounter,
   mockObservableGauge,
   mockHistogram,
-} from './helper';
+} from './metricsHelper';
 
 const metricsServiceProtoPath =
   'opentelemetry/proto/collector/metrics/v1/metrics_service.proto';