feat(opentelemetry-instrumentation): getConfig and setConfig (#2224)

* feat(opentelemetry-instrumentation): config

* chore: remove any type from method signature

* chore: setConfig describe block and rename tests

Author: mottibec

packages/opentelemetry-instrumentation/src/instrumentation.ts

@@ -70,6 +70,19 @@ export abstract class InstrumentationAbstract<T = any>
     );
   }
 
+  /* Returns InstrumentationConfig */
+  public getConfig() {
+    return this._config;
+  }
+
+  /**
+   * Sets InstrumentationConfig to this plugin
+   * @param InstrumentationConfig
+   */
+  public setConfig(config: types.InstrumentationConfig = {}) {
+    this._config = Object.assign({}, config);
+  }
+
   /**
    * Sets TraceProvider to this plugin
    * @param tracerProvider

packages/opentelemetry-instrumentation/src/types.ts

@@ -44,6 +44,12 @@ export interface Instrumentation {
   /** Method to set meter provider  */
   setMeterProvider(meterProvider: MeterProvider): void;
 
+  /** Method to set instrumentation config  */
+  setConfig(config: InstrumentationConfig): void;
+
+  /** Method to get instrumentation config  */
+  getConfig(): InstrumentationConfig;
+
   /**
    * Contains all supported versions.
    * All versions must be compatible with [semver](https://semver.org/spec/v2.0.0.html) format.

packages/opentelemetry-instrumentation/test/common/Instrumentation.test.ts

@@ -15,11 +15,19 @@
  */
 
 import * as assert from 'assert';
-import { Instrumentation, InstrumentationBase } from '../../src';
+import {
+  Instrumentation,
+  InstrumentationBase,
+  InstrumentationConfig,
+} from '../../src';
+
+interface TestInstrumentationConfig extends InstrumentationConfig {
+  isActive?: boolean;
+}
 
 class TestInstrumentation extends InstrumentationBase {
-  constructor() {
-    super('test', '1.0.0');
+  constructor(config: TestInstrumentationConfig & InstrumentationConfig = {}) {
+    super('test', '1.0.0', Object.assign({}, config));
   }
   enable() {}
   disable() {}
@@ -56,4 +64,29 @@ describe('BaseInstrumentation', () => {
       assert.strictEqual(called, true);
     });
   });
+
+  describe('getConfig', () => {
+    it('should return instrumentation config', () => {
+      const instrumentation: Instrumentation = new TestInstrumentation({
+        isActive: false,
+      });
+      const configuration =
+        instrumentation.getConfig() as TestInstrumentationConfig;
+      assert.notStrictEqual(configuration, null);
+      assert.strictEqual(configuration.isActive, false);
+    });
+  });
+
+  describe('setConfig', () => {
+    it('should set a new config for instrumentation', () => {
+      const instrumentation: Instrumentation = new TestInstrumentation();
+      const config: TestInstrumentationConfig = {
+        isActive: true,
+      };
+      instrumentation.setConfig(config);
+      const configuration =
+        instrumentation.getConfig() as TestInstrumentationConfig;
+      assert.strictEqual(configuration.isActive, true);
+    });
+  });
 });