refactor(server): rename metrics to telemetry (#13584)

server/src/repositories/telemetry.repository.ts

@@ -0,0 +1,52 @@
+import { Inject, Injectable } from '@nestjs/common';
+import { MetricOptions } from '@opentelemetry/api';
+import { MetricService } from 'nestjs-otel';
+import { IConfigRepository } from 'src/interfaces/config.interface';
+import { IMetricGroupRepository, ITelemetryRepository, MetricGroupOptions } from 'src/interfaces/telemetry.interface';
+
+class MetricGroupRepository implements IMetricGroupRepository {
+  private enabled = false;
+
+  constructor(private metricService: MetricService) {}
+
+  addToCounter(name: string, value: number, options?: MetricOptions): void {
+    if (this.enabled) {
+      this.metricService.getCounter(name, options).add(value);
+    }
+  }
+
+  addToGauge(name: string, value: number, options?: MetricOptions): void {
+    if (this.enabled) {
+      this.metricService.getUpDownCounter(name, options).add(value);
+    }
+  }
+
+  addToHistogram(name: string, value: number, options?: MetricOptions): void {
+    if (this.enabled) {
+      this.metricService.getHistogram(name, options).record(value);
+    }
+  }
+
+  configure(options: MetricGroupOptions): this {
+    this.enabled = options.enabled;
+    return this;
+  }
+}
+
+@Injectable()
+export class TelemetryRepository implements ITelemetryRepository {
+  api: MetricGroupRepository;
+  host: MetricGroupRepository;
+  jobs: MetricGroupRepository;
+  repo: MetricGroupRepository;
+
+  constructor(metricService: MetricService, @Inject(IConfigRepository) configRepository: IConfigRepository) {
+    const { telemetry } = configRepository.getEnv();
+    const { apiMetrics, hostMetrics, jobMetrics, repoMetrics } = telemetry;
+
+    this.api = new MetricGroupRepository(metricService).configure({ enabled: apiMetrics });
+    this.host = new MetricGroupRepository(metricService).configure({ enabled: hostMetrics });
+    this.jobs = new MetricGroupRepository(metricService).configure({ enabled: jobMetrics });
+    this.repo = new MetricGroupRepository(metricService).configure({ enabled: repoMetrics });
+  }
+}