From 29584197bb53a6fb5f980cc8d2566b0492196def Mon Sep 17 00:00:00 2001
From: Tim Buchwaldt <tim@buchwaldt.ws>
Date: Sat, 12 Nov 2022 17:13:39 +0100
Subject: [PATCH] Measure stats-data

---
 lib/pleroma/application.ex   |  4 ++--
 lib/pleroma/web/telemetry.ex | 17 +++++++++++++++--
 2 files changed, 17 insertions(+), 4 deletions(-)

diff --git a/lib/pleroma/application.ex b/lib/pleroma/application.ex
index ad768b0e0..02336d6d1 100644
--- a/lib/pleroma/application.ex
+++ b/lib/pleroma/application.ex
@@ -64,7 +64,6 @@ defmodule Pleroma.Application do
         Config.TransferTask,
         Pleroma.Emoji,
         Pleroma.Web.Plugs.RateLimiter.Supervisor,
-        Pleroma.Web.Telemetry,
         {Task.Supervisor, name: Pleroma.TaskSupervisor}
       ] ++
         cachex_children() ++
@@ -74,7 +73,8 @@ defmodule Pleroma.Application do
           Pleroma.JobQueueMonitor,
           {Majic.Pool, [name: Pleroma.MajicPool, pool_size: Config.get([:majic_pool, :size], 2)]},
           {Oban, Config.get(Oban)},
-          Pleroma.Web.Endpoint
+          Pleroma.Web.Endpoint,
+          Pleroma.Web.Telemetry
         ] ++
         elasticsearch_children() ++
         task_children(@mix_env) ++
diff --git a/lib/pleroma/web/telemetry.ex b/lib/pleroma/web/telemetry.ex
index 46b5865f7..73ce6a85c 100644
--- a/lib/pleroma/web/telemetry.ex
+++ b/lib/pleroma/web/telemetry.ex
@@ -1,6 +1,7 @@
 defmodule Pleroma.Web.Telemetry do
   use Supervisor
   import Telemetry.Metrics
+  alias Pleroma.Stats
 
   def start_link(arg) do
     Supervisor.start_link(__MODULE__, arg, name: __MODULE__)
@@ -103,11 +104,23 @@ defmodule Pleroma.Web.Telemetry do
         reporter_options: [
           buckets: [0.01, 0.025, 0.05, 0.1, 0.2, 0.5, 1, 2.5, 5, 10]
         ]
-      )
+      ),
+      last_value("pleroma.local_users.total"),
+      last_value("pleroma.domains.total"),
+      last_value("pleroma.local_statuses.total")
     ]
   end
 
   defp periodic_measurements do
-    []
+    [
+      {__MODULE__, :instance_stats, []}
+    ]
+  end
+
+  def instance_stats do
+    stats = Stats.get_stats()
+    :telemetry.execute([:pleroma, :local_users], %{total: stats.user_count}, %{})
+    :telemetry.execute([:pleroma, :domains], %{total: stats.domain_count}, %{})
+    :telemetry.execute([:pleroma, :local_statuses], %{total: stats.status_count}, %{})
   end
 end