fixup! feat(instrumentation): added synchronous gauge

Author: clintonb

packages/sdk-metrics/src/Meter.ts

@@ -25,7 +25,6 @@ import {
   ObservableUpDownCounter,
   BatchObservableCallback,
   Observable,
-  Attributes,
   Gauge,
 } from '@opentelemetry/api';
 import {
@@ -52,10 +51,7 @@ export class Meter implements IMeter {
   /**
    * Create a {@link Gauge} instrument.
    */
-  createGauge<AttributesTypes extends Attributes = Attributes>(
-    name: string,
-    options?: MetricOptions
-  ): Gauge<AttributesTypes> {
+  createGauge(name: string, options?: MetricOptions): Gauge {
     const descriptor = createInstrumentDescriptor(
       name,
       InstrumentType.GAUGE,

packages/sdk-metrics/src/types.ts

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+import { Context, MetricAttributes } from '@opentelemetry/api';
 
 export type CommonReaderOptions = {
   timeoutMillis?: number;
@@ -23,3 +24,16 @@ export type CollectionOptions = CommonReaderOptions;
 export type ShutdownOptions = CommonReaderOptions;
 
 export type ForceFlushOptions = CommonReaderOptions;
+
+/**
+ * This is intentionally not using the API's type as it's only available from @opentelemetry/api 1.9.0 and up.
+ * In SDK 2.0 we'll be able to bump the minimum API version and remove this workaround.
+ */
+export interface Gauge<
+  AttributesTypes extends MetricAttributes = MetricAttributes,
+> {
+  /**
+   * Records a measurement. Value of the measurement must not be negative.
+   */
+  record(value: number, attributes?: AttributesTypes, context?: Context): void;
+}