[grafana-sampling] add batch config options and k8s.pod.name to metrics dimensions (#3324)

* [grafana-sampling] add batch config optoins and k8s.pod.name to metrics gen dimensions

Signed-off-by: Robbie Lankford <robert.lankford@grafana.com>

* bump version

Signed-off-by: Robbie Lankford <robert.lankford@grafana.com>

---------

Signed-off-by: Robbie Lankford <robert.lankford@grafana.com>

Author: rlankfo

charts/grafana-sampling/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v2
 name: grafana-sampling
 description: A Helm chart for a layered OTLP tail sampling and metrics generation pipeline.
 type: application
-version: 1.0.1
+version: 1.1.0
 appVersion: "v1.3.0"
 sources:
   - https://github.com/grafana/alloy

charts/grafana-sampling/README.md

@@ -1,6 +1,6 @@
 # grafana-sampling
 
-![Version: 1.0.1](https://img.shields.io/badge/Version-1.0.1-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: v1.3.0](https://img.shields.io/badge/AppVersion-v1.3.0-informational?style=flat-square)
+![Version: 1.1.0](https://img.shields.io/badge/Version-1.1.0-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: v1.3.0](https://img.shields.io/badge/AppVersion-v1.3.0-informational?style=flat-square)
 
 A Helm chart for a layered OTLP tail sampling and metrics generation pipeline.
 
@@ -139,7 +139,11 @@ A major chart version change indicates that there is an incompatible breaking ch
 | alloy-statefulset.rbac.create | bool | `false` |  |
 | alloy-statefulset.service.clusterIP | string | `"None"` |  |
 | alloy-statefulset.serviceAccount.create | bool | `false` |  |
-| metricsGeneration.dimensions | list | `["service.namespace","service.version","deployment.environment","k8s.cluster.name"]` | Additional dimensions to add to generated metrics. |
+| batch.deployment | object | `{"send_batch_max_size":0,"send_batch_size":8192,"timeout":"200ms"}` | Configure batch processing options. |
+| batch.statefulset.send_batch_max_size | int | `0` |  |
+| batch.statefulset.send_batch_size | int | `8192` |  |
+| batch.statefulset.timeout | string | `"200ms"` |  |
+| metricsGeneration.dimensions | list | `["service.namespace","service.version","deployment.environment","k8s.cluster.name","k8s.pod.name"]` | Additional dimensions to add to generated metrics. |
 | metricsGeneration.enabled | bool | `true` | Toggle generation of spanmetrics and servicegraph metrics. |
 | metricsGeneration.legacy | bool | `true` | Use legacy metric names that match those used by the Tempo metrics generator. |
 | sampling.decisionWait | string | `"15s"` | Wait time since the first span of a trace before making a sampling decision. |

charts/grafana-sampling/templates/_otelcol_processor_batch.alloy.txt

@@ -1,6 +1,10 @@
 {{- define "deployment.processor.batch" -}}
 otelcol.processor.batch "default" {
   // https://grafana.com/docs/alloy/latest/reference/components/otelcol.processor.batch/
+  timeout = {{ .Values.batch.deployment.timeout | quote }}
+  send_batch_size = {{ .Values.batch.deployment.send_batch_size }}
+  send_batch_max_size = {{ .Values.batch.deployment.send_batch_max_size }}
+
   output {
     traces = [otelcol.exporter.loadbalancing.default.input]
   }
@@ -11,6 +15,10 @@ otelcol.processor.batch "default" {
 {{- define "statefulset.processor.batch" -}}
 otelcol.processor.batch "default" {
   // https://grafana.com/docs/alloy/latest/reference/components/otelcol.processor.batch/
+  timeout = {{ .Values.batch.statefulset.timeout | quote }}
+  send_batch_size = {{ .Values.batch.statefulset.send_batch_size }}
+  send_batch_max_size = {{ .Values.batch.statefulset.send_batch_max_size }}
+
   output {
     {{ if .Values.metricsGeneration.enabled }}
     metrics = [otelcol.exporter.prometheus.grafana_cloud_prometheus.input]

charts/grafana-sampling/values.yaml

@@ -9,6 +9,7 @@ metricsGeneration:
     - service.version
     - deployment.environment
     - k8s.cluster.name
+    - k8s.pod.name
 
 sampling:
   # -- Toggle tail sampling.
@@ -49,6 +50,17 @@ sampling:
       }
     }
 
+batch:
+  # -- Configure batch processing options.
+  deployment:
+    timeout: 200ms
+    send_batch_size: 8192
+    send_batch_max_size: 0
+  statefulset:
+    timeout: 200ms
+    send_batch_size: 8192
+    send_batch_max_size: 0
+
 # @ignored Ignore alloy deployment
 alloy-deployment:
   # -- Do not change this.