chore: alias static labels (#576)

packages/opentelemetry-metrics/src/Meter.ts

@@ -42,6 +42,8 @@ export class Meter implements types.Meter {
  private readonly _metrics = new Map<string, Metric<BaseHandle>>();
  private readonly _exporters: MetricExporter[] = [];
 
+ readonly labels = Meter.labels;
+
  /**
  * Constructs a new Meter instance.
  */
@@ -150,6 +152,27 @@ export class Meter implements types.Meter {
  this._exporters.push(exporter);
  }
 
+ /**
+ * Provide a pre-computed re-useable LabelSet by
+ * converting the unordered labels into a canonicalized
+ * set of lables with an unique identifier, useful for pre-aggregation.
+ * @param labels user provided unordered Labels.
+ */
+ static labels(labels: types.Labels): types.LabelSet {
+ const keys = Object.keys(labels).sort();
+ const identifier = keys.reduce((result, key) => {
+ if (result.length > 2) {
+ result += ',';
+ }
+ return (result += key + ':' + labels[key]);
+ }, '|#');
+ const sortedLabels: types.Labels = {};
+ keys.forEach(key => {
+ sortedLabels[key] = labels[key];
+ });
+ return new LabelSet(identifier, sortedLabels);
+ }
+
  /**
  * Send a single metric by name to all registered exporters
  */
@@ -188,27 +211,6 @@ export class Meter implements types.Meter {
  this._metrics.set(name, metric);
  }
 
- /**
- * Provide a pre-computed re-useable LabelSet by
- * converting the unordered labels into a canonicalized
- * set of labels with an unique identifier, useful for pre-aggregation.
- * @param labels user provided unordered Labels.
- */
- labels(labels: types.Labels): types.LabelSet {
- const keys = Object.keys(labels).sort();
- const identifier = keys.reduce((result, key) => {
- if (result.length > 2) {
- result += ',';
- }
- return (result += key + ':' + labels[key]);
- }, '|#');
- const sortedLabels: types.Labels = {};
- keys.forEach(key => {
- sortedLabels[key] = labels[key];
- });
- return new LabelSet(identifier, sortedLabels);
- }
-
  /**
  * Ensure a metric name conforms to the following rules:
  *