cluster/nomad/regions/homelab-1/job/home-assistant.hcl

variable "flake_ref" {
  type = string
}

variable "flake_sha" {
  type = string
}

job "home-assistant" {
  datacenters = [ "homelab-1" ]
  type = "service"

  constraint {
    attribute = "${attr.unique.hostname}"
    value = "blowhole"
  }

  group "zigbee2mqtt" {
    count = 1

    restart {
      attempts = 5
      delay = "5s"
    }

    network {
      mode = "bridge"

      port "http" {
        static = 8456
        to = 8456
      }
    }

    volume "home-assistant_zigbee2mqtt" {
      type = "csi"
      source = "home-assistant_zigbee2mqtt"
      read_only = false

      attachment_mode = "file-system"
      access_mode     = "single-node-writer"
    }

    service {
      name = "zigbee2mqtt"
      port = "8456"

      connect {
        sidecar_service {
          proxy {
            upstreams {
              destination_name = "mqtt"
              local_bind_port  = 1883
              datacenter = "homelab-1"
            }
          }
        }
      }
    }

    task "zigbee2mqtt" {
      driver = "docker"

      vault {
        policies = ["zigbee2mqtt-policy"]
      }

      config {
        nix_flake_ref = "${var.flake_ref}#nixngSystems.zigbee2mqtt.config.system.build.toplevel"
        nix_flake_sha = var.flake_sha
        entrypoint = [ "init" ]

        devices = [
          {
            host_path = "/dev/ttyUSB0" #"serial/by-id/usb-ITead_Sonoff_Zigbee_3.0_USB_Dongle_Plus_4c004e9c53c9eb118a9f8b4f1d69213e-if00-port0"
            container_path = "/dev/ttyUSB0"
          }
        ]
      }

      resources {
        cpu = 128
        memory = 128
        memory_max = 256
      }

      volume_mount {
        volume = "home-assistant_zigbee2mqtt"
        destination = "/var/zigbee2mqtt"
        read_only = false
      }

      template {
        data = <<EOF
{{ with secret "kv/data/zigbee2mqtt" }}
XIAOMI_HUB_ADDRESS={{ .Data.data.xiaomi_hub_address }}
{{ end }}
{{ with secret "kv/data/mqtt" }}
MQTT_PASSWORD={{ .Data.data.password }}
MQTT_USER={{ .Data.data.user }}
{{ end }}
EOF
        destination = "secrets/environment"
        env = true
        perms = "444"
      }
    }
  }

  group "mqtt" {
    count = 1

    restart {
      attempts = 5
      delay = "5s"
    }

    network {
      mode = "bridge"
    }

    volume "home-assistant_mosquitto" {
      type = "csi"
      source = "home-assistant_mosquitto"
      read_only = false

      attachment_mode = "file-system"
      access_mode     = "single-node-writer"
    }

    service {
      name = "mqtt"
      port = "1883"

      connect {
        sidecar_service {}
      }
    }

    task "mosquitto" {
      driver = "docker"

      vault {
        policies = ["mosquitto-policy"]
      }

      config {
        nix_flake_ref = "${var.flake_ref}#nixngSystems.mosquitto.config.system.build.toplevel"
        nix_flake_sha = var.flake_sha
        entrypoint = [ "init" ]
      }

      resources {
        cpu = 128
        memory = 128
        memory_max = 256
      }

      volume_mount {
        volume = "home-assistant_mosquitto"
        destination = "/var/mosquitto"
        read_only = false
      }

      template {
        data = <<EOF
{{ with secret "kv/data/mqtt" }}
{{ .Data.data.user}}:{{ .Data.data.hash }}
{{ end }}
EOF
        destination = "secrets/mqtt_password"
        perms = "444"
      }
    }
  }

  group "home-assistant" {
    count = 1

    restart {
      attempts = 5
      delay = "5s"
    }

    network {
      mode = "bridge"

      port "http" {
        static = 8123
        to = 8123
      }
    }

    volume "home-assistant_hass" {
      type = "csi"
      source = "home-assistant_hass"
      read_only = false

      attachment_mode = "file-system"
      access_mode     = "single-node-writer"
    }

    volume "home-assistant_db" {
      type = "csi"
      source = "home-assistant_db"
      read_only = false

      attachment_mode = "file-system"
      access_mode     = "single-node-writer"
    }

    service {
      name = "home-assistant"
      port = "8123"

      connect {
        sidecar_service {
          proxy {
            upstreams {
              destination_name = "mqtt"
              local_bind_port  = 1883
              datacenter = "homelab-1"
            }
          }
        }
      }
    }

    task "postgresql" {
      driver = "docker"

      volume_mount {
        volume = "home-assistant_db"
        destination = "/var/lib/postgresql"
        read_only = false
      }

      config {
        nix_flake_ref = "${var.flake_ref}#nixngSystems.home-assistant.postgresql.config.system.build.toplevel"
        nix_flake_sha = var.flake_sha
        entrypoint = [ "init" ]
      }

      resources {
        cpu = 500
        memory = 128
        memory_max = 256
      }

      template {
        data = <<EOF
alter user hass with encrypted password '{{ with secret "kv/data/home-assistant" }}{{ .Data.data.pgpass }}{{ end }}';
EOF
        destination = "secrets/init.sql"
      }

      vault {
        policies = ["home-assistant-policy"]
      }
    }

    task "home-assistant" {
      driver = "docker"

      vault {
        policies = ["home-assistant-policy"]
      }

      config {
        nix_flake_ref = "${var.flake_ref}#nixngSystems.home-assistant.hass.config.system.build.toplevel"
        nix_flake_sha = var.flake_sha
        entrypoint = [ "init" ]
      }

      resources {
        cpu = 512
        memory = 1024
        memory_max = 1024
      }

      volume_mount {
        volume = "home-assistant_hass"
        destination = "/var/home-assistant"
        read_only = false
      }

      template {
        data = <<EOF
{{ with secret "kv/data/home-assistant" }}
PSQL_PASSWORD={{ .Data.data.pgpass }}
LATITUDE={{ .Data.data.latitude }}
LONGTITUDE={{ .Data.data.longtitude }}
ELEVATION={{ .Data.data.elevation }}
TIME_ZONE={{ .Data.data.time_zone }}
ALARM_CODE={{ .Data.data.alarm_code }}
{{ end }}
EOF
        destination = "secrets/environment"
        env = true
        perms = "400"
      }
    }
  }
}