Commit 6e27fc9c authored by Alex Gleason's avatar Alex Gleason
Browse files

Merge branch 'log-slow-queries' into 'develop'

Log slow Ecto queries

See merge request pleroma/pleroma!3553
parents 3b8eaadb 08c0f09b
......@@ -149,6 +149,8 @@
]
# Configures Elixir's Logger
config :logger, truncate: 65536
config :logger, :console,
level: :debug,
format: "\n$time $metadata[$level] $message\n",
......@@ -853,6 +855,13 @@
{Pleroma.Web.ActivityPub.MRF.MediaProxyWarmingPolicy, [max_running: 5, max_waiting: 5]}
]
config :pleroma, :telemetry,
slow_queries_logging: [
enabled: false,
min_duration: 500_000,
exclude_sources: [nil, "oban_jobs"]
]
# Import environment specific config. This must remain at the bottom
# of this file so it overrides the configuration defined above.
import_config "#{Mix.env()}.exs"
......@@ -12,10 +12,16 @@ defmodule Pleroma.Telemetry.Logger do
[:pleroma, :connection_pool, :reclaim, :stop],
[:pleroma, :connection_pool, :provision_failure],
[:pleroma, :connection_pool, :client, :dead],
[:pleroma, :connection_pool, :client, :add]
[:pleroma, :connection_pool, :client, :add],
[:pleroma, :repo, :query]
]
def attach do
:telemetry.attach_many("pleroma-logger", @events, &handle_event/4, [])
:telemetry.attach_many(
"pleroma-logger",
@events,
&Pleroma.Telemetry.Logger.handle_event/4,
[]
)
end
# Passing anonymous functions instead of strings to logger is intentional,
......@@ -87,4 +93,64 @@ def handle_event(
end
def handle_event([:pleroma, :connection_pool, :client, :add], _, _, _), do: :ok
def handle_event(
[:pleroma, :repo, :query] = _name,
%{query_time: query_time} = measurements,
%{source: source} = metadata,
config
) do
logging_config = Pleroma.Config.get([:telemetry, :slow_queries_logging], [])
if logging_config[:enabled] &&
logging_config[:min_duration] &&
query_time > logging_config[:min_duration] and
(is_nil(logging_config[:exclude_sources]) or
source not in logging_config[:exclude_sources]) do
log_slow_query(measurements, metadata, config)
else
:ok
end
end
defp log_slow_query(
%{query_time: query_time} = _measurements,
%{source: _source, query: query, params: query_params, repo: repo} = _metadata,
_config
) do
sql_explain =
with {:ok, %{rows: explain_result_rows}} <-
repo.query("EXPLAIN " <> query, query_params, log: false) do
Enum.map_join(explain_result_rows, "\n", & &1)
end
{:current_stacktrace, stacktrace} = Process.info(self(), :current_stacktrace)
pleroma_stacktrace =
Enum.filter(stacktrace, fn
{__MODULE__, _, _, _} ->
false
{mod, _, _, _} ->
mod
|> to_string()
|> String.starts_with?("Elixir.Pleroma.")
end)
Logger.warn(fn ->
"""
Slow query!
Total time: #{round(query_time / 1_000)} ms
#{query}
#{inspect(query_params, limit: :infinity)}
#{sql_explain}
#{Exception.format_stacktrace(pleroma_stacktrace)}
"""
end)
end
end
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