honkoma/test/pleroma/web/endpoint/metrics_exporter_test.exs

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# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.Endpoint.MetricsExporterTest do
# Modifies AppEnv, has to stay synchronous
use Pleroma.Web.ConnCase
alias Pleroma.Web.Endpoint.MetricsExporter
defp config do
Application.get_env(:prometheus, MetricsExporter)
end
describe "with default config" do
test "does NOT expose app metrics", %{conn: conn} do
conn
|> get(config()[:path])
|> json_response(404)
end
end
describe "when enabled" do
setup do
initial_config = config()
on_exit(fn -> Application.put_env(:prometheus, MetricsExporter, initial_config) end)
Application.put_env(
:prometheus,
MetricsExporter,
Keyword.put(initial_config, :enabled, true)
)
end
test "serves app metrics", %{conn: conn} do
conn = get(conn, config()[:path])
assert response = response(conn, 200)
for metric <- [
"http_requests_total",
"http_request_duration_microseconds",
"phoenix_controller_call_duration",
"telemetry_scrape_duration",
"erlang_vm_memory_atom_bytes_total"
] do
assert response =~ ~r/#{metric}/
end
end
test "when IP whitelist configured, " <>
"serves app metrics only if client IP is whitelisted",
%{conn: conn} do
Application.put_env(
:prometheus,
MetricsExporter,
Keyword.put(config(), :ip_whitelist, ["127.127.127.127", {1, 1, 1, 1}, '255.255.255.255'])
)
conn
|> get(config()[:path])
|> json_response(404)
conn
|> Map.put(:remote_ip, {127, 127, 127, 127})
|> get(config()[:path])
|> response(200)
end
end
end