[helm] add lint checks for renderExamples (#6060) (#6092)

* fix: add lint checks for renderExamples

* fix: helm linting errors

(cherry picked from commit 0097d21)

Co-authored-by: Panos Koutsovasilis <panos.koutsovasilis@elastic.co>

Author: mergify[bot]

deploy/helm/elastic-agent/templates/agent/cluster-role-binding.yaml

@@ -3,7 +3,7 @@
 {{- if or ($presetVal).clusterRole.create ($presetVal).clusterRole.name  -}}
 {{- if or ($presetVal).serviceAccount.create ($presetVal).serviceAccount.name -}}
 {{/* cluster role binding is not namespace bound so let's try to give it a unique enough name */}}
-{{- $clusterRoleName := printf "agent-%s-%s-%s" $presetName $.Release.Name $.Release.Namespace -}}
+{{- $clusterRoleName := printf "agent-%s-%s-%s" $presetName $.Release.Name $.Release.Namespace }}
 apiVersion: rbac.authorization.k8s.io/v1
 kind: ClusterRoleBinding
 metadata:

deploy/helm/elastic-agent/templates/agent/cluster-role.yaml

@@ -2,7 +2,7 @@
 {{- range $presetName, $presetVal := $.Values.agent.presets -}}
 {{- if eq $presetVal.clusterRole.create true -}}
 {{/* cluster role binding is not namespace bound so let's try to give it a unique enough name */}}
-{{- $clusterRoleName := printf "agent-%s-%s-%s" $presetName $.Release.Name $.Release.Namespace -}}
+{{- $clusterRoleName := printf "agent-%s-%s-%s" $presetName $.Release.Name $.Release.Namespace }}
 apiVersion: rbac.authorization.k8s.io/v1
 kind: ClusterRole
 metadata:

deploy/helm/elastic-agent/templates/agent/eck/daemonset.yaml

@@ -2,7 +2,7 @@
 {{- range $presetName, $presetVal := $.Values.agent.presets -}}
 {{- if and (eq ($presetVal).mode "daemonset") (eq $.Values.agent.engine "eck") -}}
 {{- $agentName := include "elasticagent.preset.fullname" (list $ $presetName)  -}}
-{{- $podTemplateResource := include "elasticagent.engine.eck.podTemplate" (list $ $presetVal $agentName) | fromYaml -}}
+{{- $podTemplateResource := include "elasticagent.engine.eck.podTemplate" (list $ $presetVal $agentName) | fromYaml }}
 apiVersion: agent.k8s.elastic.co/v1alpha1
 kind: Agent
 metadata:

deploy/helm/elastic-agent/templates/agent/eck/secret.yaml

@@ -1,7 +1,7 @@
 {{- include "elasticagent.init" $ -}}
 {{- range $presetName, $presetVal := $.Values.agent.presets }}
 {{- if (eq $.Values.agent.engine "eck") -}}
-{{- $agentName := include "elasticagent.preset.fullname" (list $ $presetName)  -}}
+{{- $agentName := include "elasticagent.preset.fullname" (list $ $presetName) }}
 apiVersion: v1
 kind: Secret
 metadata:

deploy/helm/elastic-agent/templates/agent/k8s/_secret.tpl

@@ -17,7 +17,7 @@
       {{- . | toYaml | nindent 6}}
     {{- end }}
     inputs:
-      {{- with ($presetVal)._inputs -}}
+      {{- with ($presetVal)._inputs }}
       {{- . | toYaml | nindent 6 }}
       {{- end }}
     {{- else }}

deploy/helm/elastic-agent/templates/agent/k8s/secret.yaml

@@ -1,7 +1,7 @@
 {{- include "elasticagent.init" $ -}}
 {{- range $presetName, $presetVal := $.Values.agent.presets }}
 {{- if (eq $.Values.agent.engine "k8s") -}}
-{{- $agentName := include "elasticagent.preset.fullname" (list $ $presetName)  -}}
+{{- $agentName := include "elasticagent.preset.fullname" (list $ $presetName) }}
 apiVersion: v1
 kind: Secret
 metadata:

deploy/helm/elastic-agent/templates/agent/service-account.yaml

@@ -1,7 +1,7 @@
 {{- include "elasticagent.init" $ -}}
 {{- range $presetName, $presetVal := $.Values.agent.presets -}}
 {{- if eq $presetVal.serviceAccount.create true -}}
-{{- $agentName := include "elasticagent.preset.fullname" (list $ $presetName)  -}}
+{{- $agentName := include "elasticagent.preset.fullname" (list $ $presetName) }}
 apiVersion: v1
 kind: ServiceAccount
 metadata:

magefile.go

@@ -3429,6 +3429,12 @@ func (Helm) RenderExamples() error {
 			maps.Copy(helmValues, data)
 		}
 
+		lintAction := action.NewLint()
+		lintResult := lintAction.Run([]string{helmChartPath}, helmValues)
+		if len(lintResult.Errors) > 0 {
+			return fmt.Errorf("failed to lint helm chart for example %s: %w", exampleFullPath, errors.Join(lintResult.Errors...))
+		}
+
 		installAction := action.NewInstall(actionConfig)
 		installAction.Namespace = "default"
 		installAction.ReleaseName = "example"