Export open telemetry traces to gcloud

src/main/k8s/dev/BUILD.bazel

@@ -499,6 +499,8 @@ cue_dump(
     srcs = ["open_telemetry_gke.cue"],
     tags = ["manual"],
     deps = [
+        ":base_gke",
+        ":config_gke",
         "//src/main/k8s:open_telemetry",
     ],
 )

src/main/k8s/dev/open_telemetry_gke.cue

@@ -14,14 +14,91 @@
 
 package k8s
 
+// Name of K8s service account for OpenTelemetry collector.
+#CollectorServiceAccount: "internal-reporting-server"
+
 objectSets: [
-	openTelemetry.collectors,
+	collectors,
 	openTelemetry.instrumentations,
-	openTelemetry.networkPolicies,
+	networkPolicies,
 ]
 
 #OpenTelemetryCollector: {
 	spec: resources: requests: memory: "48Mi"
 }
 
 openTelemetry: #OpenTelemetry
+
+collectors: [Name=string]: #OpenTelemetryCollector & {
+	metadata: name: Name
+}
+
+collectors: {
+	"default": {
+		spec: {
+			nodeSelector:   #ServiceAccountNodeSelector
+			serviceAccount: #CollectorServiceAccount
+			config:         """
+receivers:
+  otlp:
+    protocols:
+      grpc:
+        endpoint: 0.0.0.0:\(#OpenTelemetryReceiverPort)
+
+processors:
+  batch:
+    send_batch_size: 200
+    timeout: 10s
+  filter:
+    spans:
+      exclude:
+        match_type: strict
+        attributes:
+          - key: rpc.method
+            value: Check
+
+exporters:
+  prometheus:
+    send_timestamps: true
+    endpoint: 0.0.0.0:\(#OpenTelemetryPrometheusExporterPort)
+    resource_to_telemetry_conversion:
+      enabled: true
+  googlecloud:
+    project: \(#GCloudProject)
+    trace:
+
+extensions:
+  health_check:
+
+service:
+  extensions: [health_check]
+  pipelines:
+    traces:
+      receivers: [otlp]
+      processors: [batch, filter]
+      exporters: [googlecloud]
+    metrics:
+      receivers: [otlp]
+      processors: [batch]
+      exporters: [prometheus]
+"""
+		}
+	}
+}
+
+networkPolicies: [Name=_]: #NetworkPolicy & {
+	_policyPodSelectorMatchLabels: "app.kubernetes.io/component": "opentelemetry-collector"
+	_name: Name
+}
+
+networkPolicies: {
+	"opentelemetry-collector": {
+		_ingresses: {
+			any: {}
+		}
+		_egresses: {
+			any: {}
+		}
+	}
+}
+

src/main/k8s/open_telemetry.cue

@@ -103,7 +103,10 @@ import "encoding/yaml"
 				env: [
 					{
 						name:  "OTEL_TRACES_EXPORTER"
-						value: "none"
+						value: "otlp"
+          }, {
+            name:  "OTEL_EXPORTER_OTLP_TRACES_PROTOCOL"
+            value: "grpc"
 					}, {
 						name:  "OTEL_EXPORTER_OTLP_ENDPOINT"
 						value: #OpenTelemetryCollectorEndpoint