refactor(server): reorganize server configs (#5753)

packages/backend/server/src/plugins/gcloud/config.ts

@@ -0,0 +1 @@
+export interface GCloudConfig {}

packages/backend/server/src/plugins/gcloud/index.ts

@@ -0,0 +1,10 @@
+import { Global } from '@nestjs/common';
+
+import { OptionalModule } from '../../fundamentals';
+import { GCloudMetrics } from './metrics';
+
+@Global()
+@OptionalModule({
+  imports: [GCloudMetrics],
+})
+export class GCloudModule {}

packages/backend/server/src/plugins/gcloud/metrics.ts

@@ -0,0 +1,46 @@
+import { MetricExporter } from '@google-cloud/opentelemetry-cloud-monitoring-exporter';
+import { TraceExporter } from '@google-cloud/opentelemetry-cloud-trace-exporter';
+import { GcpDetectorSync } from '@google-cloud/opentelemetry-resource-util';
+import { Global, Provider } from '@nestjs/common';
+import { Resource } from '@opentelemetry/resources';
+import {
+  MetricReader,
+  PeriodicExportingMetricReader,
+} from '@opentelemetry/sdk-metrics';
+import { SpanExporter } from '@opentelemetry/sdk-trace-node';
+
+import { OptionalModule } from '../../fundamentals';
+import { OpentelemetryFactory } from '../../fundamentals/metrics';
+
+export class GCloudOpentelemetryFactory extends OpentelemetryFactory {
+  override getResource(): Resource {
+    return super.getResource().merge(new GcpDetectorSync().detect());
+  }
+
+  override getMetricReader(): MetricReader {
+    return new PeriodicExportingMetricReader({
+      exportIntervalMillis: 30000,
+      exportTimeoutMillis: 10000,
+      exporter: new MetricExporter({
+        prefix: 'custom.googleapis.com',
+      }),
+      metricProducers: this.getMetricsProducers(),
+    });
+  }
+
+  override getSpanExporter(): SpanExporter {
+    return new TraceExporter();
+  }
+}
+
+const factorProvider: Provider = {
+  provide: OpentelemetryFactory,
+  useFactory: () => new GCloudOpentelemetryFactory(),
+};
+
+@Global()
+@OptionalModule({
+  if: config => config.metrics.enabled,
+  overrides: [factorProvider],
+})
+export class GCloudMetrics {}