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diff --git a/lib/tesla/adapter/hackney.ex b/lib/tesla/adapter/hackney.ex
index 0e53382..1e0b52b 100644
--- a/lib/tesla/adapter/hackney.ex
+++ b/lib/tesla/adapter/hackney.ex
@@ -1,112 +1,119 @@
if Code.ensure_loaded?(:hackney) do
defmodule Tesla.Adapter.Hackney do
@moduledoc """
Adapter for [hackney](https://github.com/benoitc/hackney)
Remember to add `{:hackney, "~> 1.13"}` to dependencies (and `:hackney` to applications in `mix.exs`)
Also, you need to recompile tesla after adding `:hackney` dependency:
```
mix deps.clean tesla
mix deps.compile tesla
```
### Example usage
```
# set globally in config/config.exs
config :tesla, :adapter, Tesla.Adapter.Hackney
# set per module
defmodule MyClient do
use Tesla
adapter Tesla.Adapter.Hackney
end
```
"""
@behaviour Tesla.Adapter
alias Tesla.Multipart
@doc false
def call(env, opts) do
with {:ok, status, headers, body} <- request(env, opts) do
{:ok, %{env | status: status, headers: format_headers(headers), body: format_body(body)}}
end
end
defp format_headers(headers) do
for {key, value} <- headers do
{String.downcase(to_string(key)), to_string(value)}
end
end
defp format_body(data) when is_list(data), do: IO.iodata_to_binary(data)
defp format_body(data) when is_binary(data) or is_reference(data), do: data
defp request(env, opts) do
request(
env.method,
Tesla.build_url(env.url, env.query),
env.headers,
env.body,
Tesla.Adapter.opts(env, opts)
)
end
defp request(method, url, headers, %Stream{} = body, opts),
do: request_stream(method, url, headers, body, opts)
defp request(method, url, headers, body, opts) when is_function(body),
do: request_stream(method, url, headers, body, opts)
defp request(method, url, headers, %Multipart{} = mp, opts) do
headers = headers ++ Multipart.headers(mp)
body = Multipart.body(mp)
request(method, url, headers, body, opts)
end
defp request(method, url, headers, body, opts) do
handle(:hackney.request(method, url, headers, body || '', opts))
end
defp request_stream(method, url, headers, body, opts) do
with {:ok, ref} <- :hackney.request(method, url, headers, :stream, opts) do
- for data <- body, do: :ok = :hackney.send_body(ref, data)
+ for data <- body do
+ with :ok <- :hackney.send_body(ref, data) do
+ :ok
+ else
+ e -> handle(e)
+ end
+ end
+
handle(:hackney.start_response(ref))
else
e -> handle(e)
end
end
defp handle({:error, _} = error), do: error
defp handle({:ok, status, headers}), do: {:ok, status, headers, []}
defp handle({:ok, ref}) when is_reference(ref) do
handle_async_response({ref, %{status: nil, headers: nil}})
end
defp handle({:ok, status, headers, ref}) when is_reference(ref) do
with {:ok, body} <- :hackney.body(ref) do
{:ok, status, headers, body}
end
end
defp handle({:ok, status, headers, body}), do: {:ok, status, headers, body}
defp handle_async_response({ref, %{headers: headers, status: status}})
when not (is_nil(headers) or is_nil(status)) do
{:ok, status, headers, ref}
end
defp handle_async_response({ref, output}) do
receive do
{:hackney_response, ^ref, {:status, status, _}} ->
handle_async_response({ref, %{output | status: status}})
{:hackney_response, ^ref, {:headers, headers}} ->
handle_async_response({ref, %{output | headers: headers}})
end
end
end
end

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