feat: expose Envoy statistics configuration in gwp

Allows configuring Envoy stats_config propety in Gateway Proxy.

changelog/v1.15.0-beta16/gwp-stats-config.yaml

@@ -0,0 +1,4 @@
+changelog:
+- type: NON_USER_FACING
+  description: >-
+    Allow configuring gateway proxy Envoy statistics configuration.

docs/content/reference/values.txt

@@ -676,6 +676,7 @@
 |gatewayProxies.NAME.istioMetaClusterId|string||ISTIO_META_CLUSTER_ID Environment Variable. Defaults to "Kubernetes"|
 |gatewayProxies.NAME.istioDiscoveryAddress|string||discoveryAddress field of the PROXY_CONFIG environment variable. Defaults to "istiod.istio-system.svc:15012"|
 |gatewayProxies.NAME.envoyLogLevel|string||Level at which the pod should log. Options include "trace", "info", "debug", "warn", "error", "critical" and "off". Default level is info|
+|gatewayProxies.NAME.envoyStatsConfig.NAME|interface||Envoy statistics configuration such as tagging. https://www.envoyproxy.io/docs/envoy/latest/api-v3/config/metrics/v3/stats.proto#config-metrics-v3-statsconfig|
 |gatewayProxies.NAME.xdsServiceAddress|string||The k8s service name for the xds server. Defaults to gloo.|
 |gatewayProxies.NAME.xdsServicePort|uint32||The k8s service port for the xds server. Defaults to the value from .Values.gloo.deployment.xdsPort, but can be overridden to use, for example, xds-relay.|
 |gatewayProxies.NAME.tcpKeepaliveTimeSeconds|uint32||The amount of time in seconds for connections to be idle before sending keep-alive probes. Defaults to 60. See here: https://www.envoyproxy.io/docs/envoy/latest/api-v3/config/core/v3/address.proto#envoy-v3-api-msg-config-core-v3-tcpkeepalive|
@@ -924,6 +925,7 @@
 |gatewayProxies.gatewayProxy.istioMetaClusterId|string||ISTIO_META_CLUSTER_ID Environment Variable. Defaults to "Kubernetes"|
 |gatewayProxies.gatewayProxy.istioDiscoveryAddress|string||discoveryAddress field of the PROXY_CONFIG environment variable. Defaults to "istiod.istio-system.svc:15012"|
 |gatewayProxies.gatewayProxy.envoyLogLevel|string||Level at which the pod should log. Options include "trace", "info", "debug", "warn", "error", "critical" and "off". Default level is info|
+|gatewayProxies.gatewayProxy.envoyStatsConfig.NAME|interface||Envoy statistics configuration such as tagging. https://www.envoyproxy.io/docs/envoy/latest/api-v3/config/metrics/v3/stats.proto#config-metrics-v3-statsconfig|
 |gatewayProxies.gatewayProxy.xdsServiceAddress|string||The k8s service name for the xds server. Defaults to gloo.|
 |gatewayProxies.gatewayProxy.xdsServicePort|uint32||The k8s service port for the xds server. Defaults to the value from .Values.gloo.deployment.xdsPort, but can be overridden to use, for example, xds-relay.|
 |gatewayProxies.gatewayProxy.tcpKeepaliveTimeSeconds|uint32|60|The amount of time in seconds for connections to be idle before sending keep-alive probes. Defaults to 60. See here: https://www.envoyproxy.io/docs/envoy/latest/api-v3/config/core/v3/address.proto#envoy-v3-api-msg-config-core-v3-tcpkeepalive|

install/helm/gloo/generate/values.go

@@ -446,6 +446,7 @@ type GatewayProxy struct {
 	IstioMetaClusterId             *string                      `json:"istioMetaClusterId,omitempty" desc:"ISTIO_META_CLUSTER_ID Environment Variable. Defaults to \"Kubernetes\""`
 	IstioDiscoveryAddress          *string                      `json:"istioDiscoveryAddress,omitempty" desc:"discoveryAddress field of the PROXY_CONFIG environment variable. Defaults to \"istiod.istio-system.svc:15012\""`
 	EnvoyLogLevel                  *string                      `json:"envoyLogLevel,omitempty" desc:"Level at which the pod should log. Options include \"trace\", \"info\", \"debug\", \"warn\", \"error\", \"critical\" and \"off\". Default level is info"`
+	EnvoyStatsConfig               map[string]interface{}       `json:"envoyStatsConfig,omitempty" desc:"Envoy statistics configuration such as tagging. https://www.envoyproxy.io/docs/envoy/latest/api-v3/config/metrics/v3/stats.proto#config-metrics-v3-statsconfig"`
 	XdsServiceAddress              *string                      `json:"xdsServiceAddress,omitempty" desc:"The k8s service name for the xds server. Defaults to gloo."`
 	XdsServicePort                 *uint32                      `json:"xdsServicePort,omitempty" desc:"The k8s service port for the xds server. Defaults to the value from .Values.gloo.deployment.xdsPort, but can be overridden to use, for example, xds-relay."`
 	TcpKeepaliveTimeSeconds        *uint32                      `json:"tcpKeepaliveTimeSeconds,omitempty" desc:"The amount of time in seconds for connections to be idle before sending keep-alive probes. Defaults to 60. See here: https://www.envoyproxy.io/docs/envoy/latest/api-v3/config/core/v3/address.proto#envoy-v3-api-msg-config-core-v3-tcpkeepalive"`

install/helm/gloo/templates/9-gateway-proxy-configmap.yaml

@@ -44,6 +44,9 @@ data:
         # Specifies the proxy's in-memory xds cache key (see projects/gloo/pkg/xds/envoy.go)
         # This value needs to match discoveryNamespace (or "writeNamespace") in the settings template
         role: {{.Values.settings.writeNamespace | default .Release.Namespace }}~{{ $name | kebabcase }}
+{{- if $spec.envoyStatsConfig }}
+    stats_config: {{- toYaml $spec.envoyStatsConfig | nindent 6}}
+{{- end }} {{- /* if $spec.envoyStatsConfig */}}
     static_resources:
 {{- if or $statsConfig.enabled (or $spec.readConfig $spec.extraListenersHelper) }}
       listeners:

install/test/helm_test.go

@@ -802,6 +802,26 @@ var _ = Describe("Helm Test", func() {
 					})
 				})
 
+				It("should set stats_config in gateway-proxy-envoy-config from gatewayProxies.gatewayProxy.envoyStatsConfig", func() {
+					prepareMakefileFromValuesFile("values/val_gwp_envoy_stats_config.yaml")
+
+					testManifest.SelectResources(func(resource *unstructured.Unstructured) bool {
+						return resource.GetKind() == "ConfigMap"
+					}).ExpectAll(func(configMap *unstructured.Unstructured) {
+						configMapObject, err := kuberesource.ConvertUnstructured(configMap)
+						Expect(err).NotTo(HaveOccurred(), fmt.Sprintf("ConfigMap %+v should be able to convert from unstructured", configMap))
+						structuredConfigMap, ok := configMapObject.(*v1.ConfigMap)
+						Expect(ok).To(BeTrue(), fmt.Sprintf("ConfigMap %+v should be able to cast to a structured config map", configMap))
+
+						if structuredConfigMap.GetName() == "gateway-proxy-envoy-config" {
+							expect := Expect(structuredConfigMap.Data["envoy.yaml"])
+							expect.To(ContainSubstring("stats_config:"))
+							expect.To(ContainSubstring("stats_tags:"))
+							expect.To(ContainSubstring("- fixed_value: zero"))
+						}
+					})
+				})
+
 				It("Should have 'pre-install' and 'pre-upgrade' hook if gateway.certGenJob.runOnUpdate is true", func() {
 					prepareMakefile(namespace, helmValues{
 						valuesArgs: []string{

install/test/values/val_gwp_envoy_stats_config.yaml

@@ -0,0 +1,6 @@
+gatewayProxies:
+  gatewayProxy:
+    envoyStatsConfig:
+      stats_tags:
+      - fixed_value: zero
+        tag_name: one