90 lines
2.8 KiB
Elixir
90 lines
2.8 KiB
Elixir
# Pleroma: A lightweight social networking server
|
|
# Copyright © 2017-2023 Pleroma Authors <https://pleroma.social/>
|
|
# SPDX-License-Identifier: AGPL-3.0-only
|
|
|
|
defmodule Pleroma.Telemetry.Logger do
|
|
@moduledoc "Transforms Pleroma telemetry events to logs"
|
|
|
|
require Logger
|
|
|
|
@events [
|
|
[:pleroma, :connection_pool, :reclaim, :start],
|
|
[:pleroma, :connection_pool, :reclaim, :stop],
|
|
[:pleroma, :connection_pool, :provision_failure],
|
|
[:pleroma, :connection_pool, :client, :dead],
|
|
[:pleroma, :connection_pool, :client, :add]
|
|
]
|
|
def attach do
|
|
:telemetry.attach_many("pleroma-logger", @events, &handle_event/4, [])
|
|
end
|
|
|
|
# Passing anonymous functions instead of strings to logger is intentional,
|
|
# that way strings won't be concatenated if the message is going to be thrown
|
|
# out anyway due to higher log level configured
|
|
|
|
def handle_event(
|
|
[:pleroma, :connection_pool, :reclaim, :start],
|
|
_,
|
|
%{max_connections: max_connections, reclaim_max: reclaim_max},
|
|
_
|
|
) do
|
|
Logger.debug(fn ->
|
|
"Connection pool is exhausted (reached #{max_connections} connections). Starting idle connection cleanup to reclaim as much as #{reclaim_max} connections"
|
|
end)
|
|
end
|
|
|
|
def handle_event(
|
|
[:pleroma, :connection_pool, :reclaim, :stop],
|
|
%{reclaimed_count: 0},
|
|
_,
|
|
_
|
|
) do
|
|
Logger.error(fn ->
|
|
"Connection pool failed to reclaim any connections due to all of them being in use. It will have to drop requests for opening connections to new hosts"
|
|
end)
|
|
end
|
|
|
|
def handle_event(
|
|
[:pleroma, :connection_pool, :reclaim, :stop],
|
|
%{reclaimed_count: reclaimed_count},
|
|
_,
|
|
_
|
|
) do
|
|
Logger.debug(fn -> "Connection pool cleaned up #{reclaimed_count} idle connections" end)
|
|
end
|
|
|
|
def handle_event(
|
|
[:pleroma, :connection_pool, :provision_failure],
|
|
%{opts: [key | _]},
|
|
_,
|
|
_
|
|
) do
|
|
Logger.error(fn ->
|
|
"Connection pool had to refuse opening a connection to #{key} due to connection limit exhaustion"
|
|
end)
|
|
end
|
|
|
|
def handle_event(
|
|
[:pleroma, :connection_pool, :client, :dead],
|
|
%{client_pid: client_pid, reason: reason},
|
|
%{key: key},
|
|
_
|
|
) do
|
|
Logger.warn(fn ->
|
|
"Pool worker for #{key}: Client #{inspect(client_pid)} died before releasing the connection with #{inspect(reason)}"
|
|
end)
|
|
end
|
|
|
|
def handle_event(
|
|
[:pleroma, :connection_pool, :client, :add],
|
|
%{clients: [_, _ | _] = clients},
|
|
%{key: key, protocol: :http},
|
|
_
|
|
) do
|
|
Logger.info(fn ->
|
|
"Pool worker for #{key}: #{length(clients)} clients are using an HTTP1 connection at the same time, head-of-line blocking might occur."
|
|
end)
|
|
end
|
|
|
|
def handle_event([:pleroma, :connection_pool, :client, :add], _, _, _), do: :ok
|
|
end
|