130 lines
4.3 KiB
Elixir
130 lines
4.3 KiB
Elixir
defmodule ServerWeb.OverviewLive do
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use ServerWeb, :live_view
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alias Server.{Hosts, Metrics, Status}
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@impl true
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def mount(_params, _session, socket) do
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if connected?(socket), do: Phoenix.PubSub.subscribe(Server.PubSub, "metrics")
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{:ok, assign(socket, :hosts, load_hosts())}
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end
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@impl true
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def handle_info({:metric_inserted, _host_id, _interval}, socket) do
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{:noreply, assign(socket, :hosts, load_hosts())}
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end
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defp load_hosts do
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for host <- Hosts.list_all() do
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sample = Metrics.latest_sample(host.id, "fast")
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payload = sample && sample.payload
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%{host: host, sample: sample, status: Status.compute(host.status, payload)}
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end
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end
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@impl true
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def render(assigns) do
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~H"""
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<div class="p-6 max-w-6xl mx-auto space-y-6">
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<header class="flex justify-between items-center">
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<div class="space-x-4">
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<h1 class="text-2xl font-bold inline">Proxmox Monitor</h1>
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<.link navigate={~p"/vms"} class="text-sm text-zinc-600 hover:text-zinc-900">VMs</.link>
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<.link navigate={~p"/admin/hosts"} class="text-sm text-zinc-600 hover:text-zinc-900">
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Admin
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</.link>
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</div>
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<.link href={~p"/logout"} method="delete" class="text-sm text-zinc-500">Sign out</.link>
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</header>
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<div class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-4">
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<div
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:for={entry <- @hosts}
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data-role="host-card"
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data-status={Atom.to_string(entry.status)}
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class={"p-4 rounded-lg border-l-4 bg-white shadow-sm " <> border_class(entry.status)}
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>
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<.link navigate={~p"/hosts/#{entry.host.name}"} class="block space-y-2">
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<div class="flex justify-between items-baseline">
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<span class="font-semibold text-zinc-900">{entry.host.name}</span>
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<span class={"text-xs uppercase tracking-wide " <> text_class(entry.status)}>
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{entry.status}
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</span>
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</div>
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<div class="text-xs text-zinc-500">
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Last seen: {last_seen(entry.host.last_seen_at)}
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</div>
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<div :if={entry.sample} class="text-sm text-zinc-700 space-y-1">
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<div>Load: {format_load(entry.sample.payload)}</div>
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<div>RAM used: {format_mem(entry.sample.payload)}</div>
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<div>Pools: {pool_summary(entry.sample.payload)}</div>
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<div>VMs: {vm_count(entry.sample.payload)}</div>
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</div>
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<div :if={is_nil(entry.sample)} class="text-sm text-zinc-400 italic">
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No samples yet
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</div>
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</.link>
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</div>
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</div>
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<p :if={@hosts == []} class="text-zinc-500">
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No hosts registered yet. Add one via <code>/admin/hosts</code>.
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</p>
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</div>
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"""
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end
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defp border_class(:ok), do: "border-green-500"
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defp border_class(:warning), do: "border-yellow-500"
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defp border_class(:critical), do: "border-red-500"
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defp border_class(:offline), do: "border-zinc-400"
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defp text_class(:ok), do: "text-green-600"
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defp text_class(:warning), do: "text-yellow-600"
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defp text_class(:critical), do: "text-red-600"
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defp text_class(:offline), do: "text-zinc-500"
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defp last_seen(nil), do: "never"
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defp last_seen(%DateTime{} = dt) do
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secs = DateTime.diff(DateTime.utc_now(), dt, :second)
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cond do
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secs < 60 -> "#{secs}s ago"
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secs < 3600 -> "#{div(secs, 60)}m ago"
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true -> "#{div(secs, 3600)}h ago"
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end
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end
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defp format_load(payload) do
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case get_in(payload, ["host", "load1"]) do
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nil -> "—"
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l -> :io_lib.format("~.2f", [l]) |> to_string()
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end
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end
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defp format_mem(payload) do
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used = get_in(payload, ["host", "mem_used_bytes"])
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total = get_in(payload, ["host", "mem_total_bytes"])
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case {used, total} do
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{u, t} when is_integer(u) and is_integer(t) and t > 0 ->
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"#{Float.round(u / t * 100, 1)}%"
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_ ->
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"—"
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end
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end
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defp pool_summary(payload) do
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pools = get_in(payload, ["zfs_pools", "pools"]) || []
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total = length(pools)
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bad = Enum.count(pools, &(&1["health"] != "ONLINE"))
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if total == 0, do: "—", else: "#{total - bad}/#{total} ok"
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end
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defp vm_count(payload) do
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vms = get_in(payload, ["vms_runtime", "vms"]) || []
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length(vms)
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end
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end
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