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README.md

Stripy hex.pm hexdocs.pm

Stripy is a micro wrapper intended to be used for sending requests to Stripe's REST API. It is made for developers who prefer to work directly with the official API and provide their own abstractions on top if such are needed.

Stripy takes care of setting headers, encoding the data, configuration settings, etc (the usual boring boilerplate); it also makes testing easy by letting you plug your own mock server (see Testing section below).

Some basic examples:

iex> Stripy.req(:get, "subscriptions")
{:ok, %HTTPoison.Response{...}}

iex> Stripy.req(:post, "customers", %{"email" => "a@b.c", "metadata[user_id]" => 1})
{:ok, %HTTPoison.Response{...}}

Where subscriptions and customers are REST API resources.

If you prefer to work with a higher-level library, check out "stripity_stripe" or "stripe_elixir" on Hex.

Installation

Add to your mix.exs as usual:

def deps do
  [{:stripy, "~> 2.0"}]
end

If you're not using application inference, then add :stripy to your applications list.

Then configure the stripy app per environment like so:

config :stripy,
  secret_key: "sk_test_xxxxxxxxxxxxx", # required
  endpoint: "https://api.stripe.com/v1/", # optional
  version: "2017-06-05", # optional
  httpoison: [recv_timeout: 5000, timeout: 8000] # optional

You may also use environment variables:

config :stripy,
  secret_key: {:system, "STRIPE_SECRET_KEY"},
  endpoint: {:system, "STRIPE_ENDPOINT"},
  version: {:system, "STRIPE_VERSION"}

Testing

You can disable actual calls to the Stripe API like so:

# Usually in your test.exs.
config :stripy,
  testing: true

All functions that use Stripy would receive response {:ok, %{status_code: 200, body: "{}"}}.

To provide your own responses, you need to configure a mock server:

config :stripy,
  testing: true,
  mock_server: MyApp.StripeMockServer

Here's an example mock server that mocks the /customer endpoint and returns a basic object for a customer with id cus_test

defmodule MyApp.StripeMockServer do
  @behaviour Stripy.MockServer

  @ok_res %{status_code: 200}

  @impl Stripy.MockServer
  def request(:get, "customers/cus_test", %{}) do
    body = Poison.encode!(%{"email" => "email@email.com"})
    {:ok, Map.put(@ok_res, :body, body)}
  end
end

Now let's quickly write a naive function that gets user's billing email:

def stripe_email(user) do
  {:ok, res} = Stripy.req(:get, "customers/#{user.stripe_id}")
  res["email"]
end

We can test it like so:

fake_user = %{stripe_id: "cus_test"}
assert stripe_email(fake_user) == "email@email.com"

Custom headers

You can add custom headers to the request by supplying a fourth parameter:

Stripy.req(:post, "charges", %{amount: 1000}, %{"Idempotency-Key" => "123456"})

License

  • Stripy: See LICENSE file.

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Micro wrapper for Stripe's REST API.

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