Floatingghost
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95 lines
3.4 KiB
Elixir
95 lines
3.4 KiB
Elixir
defmodule Pleroma.HTTP.BackoffTest do
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@backoff_cache :http_backoff_cache
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use Pleroma.DataCase, async: false
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alias Pleroma.HTTP.Backoff
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defp within_tolerance?(ttl, expected) do
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ttl > expected - 10 and ttl < expected + 10
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end
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describe "get/3" do
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test "should return {:ok, env} when not rate limited" do
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Tesla.Mock.mock_global(fn
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%Tesla.Env{url: "https://akkoma.dev/api/v1/instance"} ->
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{:ok, %Tesla.Env{status: 200, body: "ok"}}
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end)
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assert {:ok, env} = Backoff.get("https://akkoma.dev/api/v1/instance")
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assert env.status == 200
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end
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test "should return {:error, env} when rate limited" do
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# Shove a value into the cache to simulate a rate limit
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Cachex.put(@backoff_cache, "akkoma.dev", true)
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assert {:error, :ratelimit} = Backoff.get("https://akkoma.dev/api/v1/instance")
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end
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test "should insert a value into the cache when rate limited" do
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Tesla.Mock.mock_global(fn
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%Tesla.Env{url: "https://ratelimited.dev/api/v1/instance"} ->
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{:ok, %Tesla.Env{status: 429, body: "Rate limited"}}
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end)
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assert {:error, :ratelimit} = Backoff.get("https://ratelimited.dev/api/v1/instance")
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assert {:ok, true} = Cachex.get(@backoff_cache, "ratelimited.dev")
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end
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test "should parse the value of x-ratelimit-reset, if present" do
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ten_minutes_from_now =
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DateTime.utc_now() |> Timex.shift(minutes: 10) |> DateTime.to_iso8601()
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Tesla.Mock.mock_global(fn
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%Tesla.Env{url: "https://ratelimited.dev/api/v1/instance"} ->
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{:ok,
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%Tesla.Env{
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status: 429,
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body: "Rate limited",
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headers: [{"x-ratelimit-reset", ten_minutes_from_now}]
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}}
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end)
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assert {:error, :ratelimit} = Backoff.get("https://ratelimited.dev/api/v1/instance")
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assert {:ok, true} = Cachex.get(@backoff_cache, "ratelimited.dev")
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{:ok, ttl} = Cachex.ttl(@backoff_cache, "ratelimited.dev")
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assert within_tolerance?(ttl, 600)
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end
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test "should parse the value of retry-after when it's a timestamp" do
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ten_minutes_from_now =
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DateTime.utc_now() |> Timex.shift(minutes: 10) |> DateTime.to_iso8601()
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Tesla.Mock.mock_global(fn
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%Tesla.Env{url: "https://ratelimited.dev/api/v1/instance"} ->
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{:ok,
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%Tesla.Env{
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status: 429,
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body: "Rate limited",
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headers: [{"retry-after", ten_minutes_from_now}]
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}}
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end)
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assert {:error, :ratelimit} = Backoff.get("https://ratelimited.dev/api/v1/instance")
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assert {:ok, true} = Cachex.get(@backoff_cache, "ratelimited.dev")
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{:ok, ttl} = Cachex.ttl(@backoff_cache, "ratelimited.dev")
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assert within_tolerance?(ttl, 600)
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end
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test "should parse the value of retry-after when it's a number of seconds" do
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Tesla.Mock.mock_global(fn
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%Tesla.Env{url: "https://ratelimited.dev/api/v1/instance"} ->
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{:ok,
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%Tesla.Env{
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status: 429,
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body: "Rate limited",
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headers: [{"retry-after", "600"}]
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}}
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end)
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assert {:error, :ratelimit} = Backoff.get("https://ratelimited.dev/api/v1/instance")
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assert {:ok, true} = Cachex.get(@backoff_cache, "ratelimited.dev")
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# assert that the value is 10 minutes from now
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{:ok, ttl} = Cachex.ttl(@backoff_cache, "ratelimited.dev")
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assert within_tolerance?(ttl, 600)
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end
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end
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end
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