feat: implement HostDetector

packages/opentelemetry-resources/src/detectors/index.ts

@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 
+export * from './BrowserDetector';
 export * from './EnvDetector';
+export * from './HostDetector';
 export * from './ProcessDetector';
-export * from './BrowserDetector';

packages/opentelemetry-resources/test/detectors/node/HostDetector.test.ts

@@ -0,0 +1,45 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ *
+ * 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
+ *
+ *      https://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.
+ */
+
+import * as sinon from 'sinon';
+import * as assert from 'assert';
+import { SemanticResourceAttributes } from '@opentelemetry/semantic-conventions';
+import { describeNode } from '../../util';
+import { hostDetector, Resource } from '../../../src';
+
+describeNode('hostDetector() on Node.js', () => {
+  afterEach(() => {
+    sinon.restore();
+  });
+
+  it('should return resource information from process', async () => {
+    const os = require('os');
+
+    sinon.stub(os, 'arch').returns('x64');
+    sinon.stub(os, 'hostname').returns('opentelemetry-test');
+
+    const resource: Resource = await hostDetector.detect();
+
+    assert.strictEqual(
+      resource.attributes[SemanticResourceAttributes.HOST_NAME],
+      'opentelemetry-test'
+    );
+    assert.strictEqual(
+      resource.attributes[SemanticResourceAttributes.HOST_ARCH],
+      'amd64'
+    );
+  });
+});