{{ define "alloy.config.kubelet_resource.allowList" }}
{{ if .Values.metrics.kubeletResource.metricsTuning.useDefaultAllowList }}
{{ "default_allow_lists/kubelet_resource.yaml" | .Files.Get }}
{{ end }}
{{ if .Values.metrics.kubeletResource.metricsTuning.includeMetrics }}
{{ .Values.metrics.kubeletResource.metricsTuning.includeMetrics | toYaml }}
{{ end }}
{{ end }}

{{ define "alloy.config.kubelet_resource" }}
// Kubelet Resource
discovery.relabel "kubelet_resource" {
  targets = discovery.kubernetes.nodes.targets
{{- if eq .Values.metrics.kubeletResource.nodeAddressFormat "proxy" }}
  rule {
    target_label = "__address__"
    replacement  = "{{ .Values.cluster.kubernetesAPIService }}"
  }
  rule {
    source_labels = ["__meta_kubernetes_node_name"]
    regex         = "(.+)"
    replacement   = "/api/v1/nodes/${1}/proxy/metrics/resource"
    target_label  = "__metrics_path__"
  }
{{ else if eq .Values.metrics.kubeletResource.nodeAddressFormat "direct" }}
  rule {
    replacement   = "/metrics/resource"
    target_label  = "__metrics_path__"
  }
{{- end }}
{{- if .Values.metrics.extraRelabelingRules }}
{{ .Values.metrics.extraRelabelingRules | indent 2 }}
{{- end }}
{{- if .Values.metrics.kubeletResource.extraRelabelingRules }}
{{ .Values.metrics.kubeletResource.extraRelabelingRules | indent 2 }}
{{- end }}
}

prometheus.scrape "kubelet_resource" {
  job_name   = "integrations/kubernetes/resources"
  targets  = discovery.relabel.kubelet_resource.output
  scheme   = "https"
  scrape_interval = {{ .Values.metrics.kubeletResource.scrapeInterval | default .Values.metrics.scrapeInterval | quote }}
  bearer_token_file = "/var/run/secrets/kubernetes.io/serviceaccount/token"
  tls_config {
    insecure_skip_verify = true
  }
{{- if .Values.alloy.alloy.clustering.enabled }}
  clustering {
    enabled = true
  }
{{- end }}
  forward_to = [prometheus.relabel.kubelet_resource.receiver]
}

prometheus.relabel "kubelet_resource" {
  max_cache_size = {{ .Values.metrics.kubeletResource.maxCacheSize | default .Values.metrics.maxCacheSize | int }}
{{- if or .Values.metrics.kubeletResource.metricsTuning.useDefaultAllowList .Values.metrics.kubeletResource.metricsTuning.includeMetrics }}
  rule {
    source_labels = ["__name__"]
    regex = "up|{{ join "|" (include "alloy.config.kubelet_resource.allowList" . | fromYamlArray) }}"
    action = "keep"
  }
{{- end }}
{{- if .Values.metrics.kubeletResource.metricsTuning.excludeMetrics }}
  rule {
    source_labels = ["__name__"]
    regex = {{ join "|" .Values.metrics.kubeletResource.metricsTuning.excludeMetrics | quote }}
    action = "drop"
  }
{{- end }}
{{- if .Values.metrics.extraMetricRelabelingRules }}
{{ .Values.metrics.extraMetricRelabelingRules | indent 2 }}
{{- end }}
{{- if .Values.metrics.kubeletResource.extraMetricRelabelingRules }}
{{ .Values.metrics.kubeletResource.extraMetricRelabelingRules | indent 2 }}
{{- end }}
  forward_to = [prometheus.relabel.metrics_service.receiver]
}
{{ end }}
