// Discover all running Docker containers
discovery.docker "containers" {
  host = "unix:///var/run/docker.sock"
}

// Extract a clean "container" label from the container name
discovery.relabel "containers" {
  targets = discovery.docker.containers.targets

  rule {
    source_labels = ["__meta_docker_container_name"]
    regex         = "/(.*)"
    target_label  = "container"
  }

  rule {
    source_labels = ["__meta_docker_container_name"]
    regex         = "/(.*)"
    target_label  = "container_name"
  }

  rule {
    target_label = "instance"
    replacement  = constants.hostname
  }
}

// Tail logs from every discovered container
loki.source.docker "containers" {
  host       = "unix:///var/run/docker.sock"
  targets    = discovery.relabel.containers.output
  forward_to = [loki.write.default.receiver]
}

// Ship to the local Loki instance
loki.write "default" {
  endpoint {
    url = "http://loki:3100/loki/api/v1/push"
  }
}
// Discover K3s pods via the Kubernetes API
discovery.kubernetes "k3s_pods" {
  role = "pod"
  api_server = "https://192.168.100.6:6443"
  bearer_token_file = "/etc/alloy/k3s-token"
  tls_config {
    insecure_skip_verify = true
  }
}

// Label pod logs with namespace/pod/container for clean Grafana filtering
discovery.relabel "k3s_pods" {
  targets = discovery.kubernetes.k3s_pods.targets
  rule {
    source_labels = ["__meta_kubernetes_namespace"]
    target_label  = "namespace"
  }
  rule {
    source_labels = ["__meta_kubernetes_pod_name"]
    target_label  = "pod"
  }
  rule {
    source_labels = ["__meta_kubernetes_pod_container_name"]
    target_label  = "container"
  }
  rule {
    target_label = "cluster"
    replacement  = "k3s-homeserver"
  }
}

// Tail logs from every discovered K3s pod
loki.source.kubernetes "k3s_pods" {
  targets    = discovery.relabel.k3s_pods.output
  forward_to = [loki.write.default.receiver]

  client {
    api_server = "https://192.168.100.6:6443"
    bearer_token_file = "/etc/alloy/k3s-token"
    tls_config {
      insecure_skip_verify = true
    }
  }
}