148 lines
4.1 KiB
Elixir
148 lines
4.1 KiB
Elixir
# Pleroma: A lightweight social networking server
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# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
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# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.HTTP do
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@moduledoc """
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Wrapper for `Tesla.request/2`.
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"""
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alias Pleroma.HTTP.Connection
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alias Pleroma.HTTP.Request
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alias Pleroma.HTTP.RequestBuilder, as: Builder
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alias Tesla.Client
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alias Tesla.Env
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require Logger
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@type t :: __MODULE__
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@doc """
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Performs GET request.
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See `Pleroma.HTTP.request/5`
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"""
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@spec get(Request.url() | nil, Request.headers(), keyword()) ::
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nil | {:ok, Env.t()} | {:error, any()}
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def get(url, headers \\ [], options \\ [])
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def get(nil, _, _), do: nil
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def get(url, headers, options), do: request(:get, url, "", headers, options)
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@doc """
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Performs POST request.
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See `Pleroma.HTTP.request/5`
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"""
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@spec post(Request.url(), String.t(), Request.headers(), keyword()) ::
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{:ok, Env.t()} | {:error, any()}
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def post(url, body, headers \\ [], options \\ []),
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do: request(:post, url, body, headers, options)
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@doc """
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Builds and performs http request.
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# Arguments:
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`method` - :get, :post, :put, :delete
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`url` - full url
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`body` - request body
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`headers` - a keyworld list of headers, e.g. `[{"content-type", "text/plain"}]`
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`options` - custom, per-request middleware or adapter options
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# Returns:
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`{:ok, %Tesla.Env{}}` or `{:error, error}`
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"""
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@spec request(atom(), Request.url(), String.t(), Request.headers(), keyword()) ::
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{:ok, Env.t()} | {:error, any()}
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def request(method, url, body, headers, options) when is_binary(url) do
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with uri <- URI.parse(url),
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received_adapter_opts <- Keyword.get(options, :adapter, []),
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adapter_opts <- Connection.options(uri, received_adapter_opts),
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options <- put_in(options[:adapter], adapter_opts),
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params <- Keyword.get(options, :params, []),
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request <- build_request(method, headers, options, url, body, params),
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client <- Tesla.client([Tesla.Middleware.FollowRedirects], tesla_adapter()),
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pid <- Process.whereis(adapter_opts[:pool]) do
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pool_alive? =
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if tesla_adapter() == Tesla.Adapter.Gun do
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if pid, do: Process.alive?(pid), else: false
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else
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false
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end
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request_opts =
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adapter_opts
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|> Enum.into(%{})
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|> Map.put(:env, Pleroma.Config.get([:env]))
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|> Map.put(:pool_alive?, pool_alive?)
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response =
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request(
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client,
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request,
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request_opts
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)
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Connection.after_request(adapter_opts)
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response
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end
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end
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@spec request(Client.t(), keyword(), map()) :: {:ok, Env.t()} | {:error, any()}
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def request(%Client{} = client, request, %{env: :test}), do: request_try(client, request)
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def request(%Client{} = client, request, %{body_as: :chunks}) do
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request_try(client, request)
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end
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def request(%Client{} = client, request, %{pool_alive?: false}) do
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request_try(client, request)
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end
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def request(%Client{} = client, request, %{pool: pool, timeout: timeout}) do
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try do
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:poolboy.transaction(
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pool,
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&Pleroma.Pool.Request.execute(&1, client, request, timeout + 500),
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timeout + 1_000
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)
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rescue
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e ->
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{:error, e}
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catch
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:exit, {:timeout, _} ->
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Logger.warn("Receive response from pool failed #{request[:url]}")
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{:error, :recv_pool_timeout}
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:exit, e ->
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{:error, e}
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end
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end
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@spec request_try(Client.t(), keyword()) :: {:ok, Env.t()} | {:error, any()}
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def request_try(client, request) do
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try do
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Tesla.request(client, request)
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rescue
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e ->
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{:error, e}
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catch
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:exit, e ->
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{:error, e}
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end
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end
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defp build_request(method, headers, options, url, body, params) do
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Builder.new()
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|> Builder.method(method)
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|> Builder.headers(headers)
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|> Builder.opts(options)
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|> Builder.url(url)
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|> Builder.add_param(:body, :body, body)
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|> Builder.add_param(:query, :query, params)
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|> Builder.convert_to_keyword()
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end
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defp tesla_adapter, do: Application.get_env(:tesla, :adapter)
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end
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