feat: create MonitoringLive base structure with PubSub subscription
Add LiveView for real-time job monitoring dashboard: - Subscribe to job:lifecycle PubSub topic for live updates - Display health metrics (completed, failed, avg duration, active jobs) - Show active operations with real-time updates - Display problems section (stuck/failed job counts) - Add router entry under /admin/monitoring Tests verify PubSub subscription and basic rendering. Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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73
lib/towerops_web/live/admin/monitoring_live.ex
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73
lib/towerops_web/live/admin/monitoring_live.ex
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@ -0,0 +1,73 @@
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defmodule ToweropsWeb.Admin.MonitoringLive do
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@moduledoc """
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Real-time job monitoring dashboard for Oban workers.
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Displays:
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- Active operations (currently executing jobs)
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- Problems (stuck/failed jobs)
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- Health metrics (throughput, errors, latency)
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- Recent activity timeline
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"""
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use ToweropsWeb, :live_view
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alias Towerops.JobMonitoring
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alias Towerops.JobMonitoring.Metrics
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@topic "job:lifecycle"
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@impl Phoenix.LiveView
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def mount(_params, _session, socket) do
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if connected?(socket) do
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Phoenix.PubSub.subscribe(Towerops.PubSub, @topic)
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end
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socket =
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socket
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|> assign(:page_title, "Job Monitoring")
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|> assign(:active_jobs, [])
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|> assign(:stuck_jobs_count, 0)
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|> assign(:failed_jobs_count, 0)
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|> assign(:recent_jobs, [])
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|> assign(:health_metrics, %{})
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|> load_monitoring_data()
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{:ok, socket}
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end
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@impl Phoenix.LiveView
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def handle_info(%{event: :started} = event, socket) do
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# Job started - add to active jobs list
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active_jobs = [event | socket.assigns.active_jobs]
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{:noreply, assign(socket, :active_jobs, active_jobs)}
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end
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def handle_info(%{event: event} = job_event, socket) when event in [:completed, :failed] do
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# Job finished - remove from active jobs, reload data
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active_jobs = Enum.reject(socket.assigns.active_jobs, fn job -> job.job_id == job_event.job_id end)
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socket =
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socket
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|> assign(:active_jobs, active_jobs)
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|> load_monitoring_data()
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{:noreply, socket}
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end
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def handle_info(_event, socket) do
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{:noreply, socket}
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end
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@spec load_monitoring_data(Phoenix.LiveView.Socket.t()) :: Phoenix.LiveView.Socket.t()
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defp load_monitoring_data(socket) do
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stuck_jobs = JobMonitoring.list_stuck_jobs()
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failed_jobs = JobMonitoring.list_failed_jobs()
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recent_jobs = JobMonitoring.list_recent_completions(20)
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metrics = Metrics.calculate_all()
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socket
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|> assign(:stuck_jobs_count, length(stuck_jobs))
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|> assign(:failed_jobs_count, length(failed_jobs))
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|> assign(:recent_jobs, recent_jobs)
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|> assign(:health_metrics, metrics)
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end
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end
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121
lib/towerops_web/live/admin/monitoring_live.html.heex
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121
lib/towerops_web/live/admin/monitoring_live.html.heex
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@ -0,0 +1,121 @@
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<Layouts.admin flash={@flash} timezone={@timezone}>
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<div class="space-y-6">
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<div>
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<h1 class="text-2xl font-bold text-gray-900 dark:text-white">
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Job Monitoring Dashboard
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</h1>
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<p class="text-gray-600 dark:text-gray-400">
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Real-time monitoring of polling and discovery jobs
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</p>
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</div>
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<!-- Health Metrics Cards -->
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<div class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-4 gap-4">
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<div class="bg-white dark:bg-gray-800/50 rounded-lg border border-gray-200 dark:border-white/10 p-6">
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<h3 class="text-sm font-medium text-gray-600 dark:text-gray-400">Completed (1h)</h3>
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<p class="text-3xl font-bold text-gray-900 dark:text-white mt-2">
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{Map.get(@health_metrics, :completed_last_hour, 0)}
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</p>
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<p class="text-sm text-gray-500 dark:text-gray-500 mt-1">jobs completed</p>
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</div>
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<div class="bg-white dark:bg-gray-800/50 rounded-lg border border-gray-200 dark:border-white/10 p-6">
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<h3 class="text-sm font-medium text-gray-600 dark:text-gray-400">Failed (1h)</h3>
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<p class="text-3xl font-bold text-gray-900 dark:text-white mt-2">
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{Map.get(@health_metrics, :failed_last_hour, 0)}
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</p>
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<p class="text-sm text-gray-500 dark:text-gray-500 mt-1">failures</p>
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</div>
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<div class="bg-white dark:bg-gray-800/50 rounded-lg border border-gray-200 dark:border-white/10 p-6">
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<h3 class="text-sm font-medium text-gray-600 dark:text-gray-400">Avg Duration</h3>
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<p class="text-3xl font-bold text-gray-900 dark:text-white mt-2">
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<%= if Map.get(@health_metrics, :avg_execution_time_seconds) do %>
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{Map.get(@health_metrics, :avg_execution_time_seconds) |> Float.round(1)}s
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<% else %>
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N/A
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<% end %>
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</p>
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<p class="text-sm text-gray-500 dark:text-gray-500 mt-1">last hour</p>
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</div>
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<div class="bg-white dark:bg-gray-800/50 rounded-lg border border-gray-200 dark:border-white/10 p-6">
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<h3 class="text-sm font-medium text-gray-600 dark:text-gray-400">Active Jobs</h3>
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<p class="text-3xl font-bold text-gray-900 dark:text-white mt-2">
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{length(@active_jobs)}
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</p>
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<p class="text-sm text-gray-500 dark:text-gray-500 mt-1">executing now</p>
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</div>
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</div>
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<!-- Active Operations -->
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<div class="bg-white dark:bg-gray-800/50 rounded-lg border border-gray-200 dark:border-white/10">
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<div class="px-4 py-3 border-b border-gray-200 dark:border-white/10">
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<h2 class="text-lg font-semibold text-gray-900 dark:text-white">Active Operations</h2>
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</div>
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<div class="p-4">
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<%= if @active_jobs == [] do %>
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<p class="text-gray-500 dark:text-gray-400 text-center py-8">
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No active jobs
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</p>
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<% else %>
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<div class="space-y-2">
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<%= for job <- @active_jobs do %>
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<div class="flex items-center justify-between p-3 bg-gray-50 dark:bg-gray-900/50 rounded">
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<div>
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<span class="font-mono text-sm text-gray-900 dark:text-white">
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{job.worker |> String.split(".") |> List.last()}
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</span>
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<span class="text-sm text-gray-500 dark:text-gray-400 ml-2">
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Device ID: {job.device_id}
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</span>
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</div>
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<span class="text-xs text-gray-500 dark:text-gray-400">
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Started: {Calendar.strftime(job.timestamp, "%H:%M:%S")}
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</span>
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</div>
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<% end %>
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</div>
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<% end %>
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</div>
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</div>
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<!-- Problems -->
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<div class="bg-white dark:bg-gray-800/50 rounded-lg border border-gray-200 dark:border-white/10">
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<div class="px-4 py-3 border-b border-gray-200 dark:border-white/10 flex items-center justify-between">
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<h2 class="text-lg font-semibold text-gray-900 dark:text-white">Problems</h2>
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<div class="flex gap-4">
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<span class="text-sm text-orange-600 dark:text-orange-400">
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{if @stuck_jobs_count > 0, do: "#{@stuck_jobs_count} stuck", else: ""}
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</span>
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<span class="text-sm text-red-600 dark:text-red-400">
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{if @failed_jobs_count > 0, do: "#{@failed_jobs_count} failed", else: ""}
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</span>
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</div>
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</div>
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<div class="p-4">
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<%= if @stuck_jobs_count == 0 and @failed_jobs_count == 0 do %>
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<p class="text-gray-500 dark:text-gray-400 text-center py-8">
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No problems detected
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</p>
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<% else %>
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<p class="text-sm text-gray-600 dark:text-gray-400">
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Problems section coming soon
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</p>
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<% end %>
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</div>
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</div>
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<!-- Health Metrics -->
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<div class="bg-white dark:bg-gray-800/50 rounded-lg border border-gray-200 dark:border-white/10">
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<div class="px-4 py-3 border-b border-gray-200 dark:border-white/10">
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<h2 class="text-lg font-semibold text-gray-900 dark:text-white">Health Metrics</h2>
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</div>
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<div class="p-4">
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<p class="text-sm text-gray-600 dark:text-gray-400">
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Detailed metrics coming soon
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</p>
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</div>
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</div>
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</div>
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</Layouts.admin>
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@ -231,6 +231,7 @@ defmodule ToweropsWeb.Router do
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live "/users", UserLive.Index, :index
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live "/organizations", OrgLive.Index, :index
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live "/audit", AuditLive.Index, :index
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live "/monitoring", MonitoringLive, :index
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end
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end
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38
test/towerops_web/live/admin/monitoring_live_test.exs
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38
test/towerops_web/live/admin/monitoring_live_test.exs
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@ -0,0 +1,38 @@
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defmodule ToweropsWeb.Admin.MonitoringLiveTest do
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use ToweropsWeb.ConnCase
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import Phoenix.LiveViewTest
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describe "MonitoringLive" do
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setup [:register_and_log_in_superuser]
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test "renders monitoring dashboard", %{conn: conn} do
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{:ok, _view, html} = live(conn, ~p"/admin/monitoring")
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assert html =~ "Job Monitoring Dashboard"
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assert html =~ "Active Operations"
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assert html =~ "Problems"
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assert html =~ "Health Metrics"
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end
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test "subscribes to job lifecycle events", %{conn: conn} do
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{:ok, view, _html} = live(conn, ~p"/admin/monitoring")
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# Verify PubSub subscription by checking it's alive
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assert view.pid |> Process.alive?()
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end
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test "displays active operations section", %{conn: conn} do
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{:ok, _view, html} = live(conn, ~p"/admin/monitoring")
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assert html =~ "Active Operations"
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assert html =~ "No active jobs"
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end
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end
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defp register_and_log_in_superuser(%{conn: conn}) do
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user = Towerops.AccountsFixtures.user_fixture()
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user = Towerops.Repo.update!(Ecto.Changeset.change(user, is_superuser: true))
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%{conn: log_in_user(conn, user), user: user}
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end
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end
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