1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
# frozen_string_literal: true
module Faraday
class Request
# Request middleware for the Authorization HTTP header
class Authorization < Faraday::Middleware
KEY = 'Authorization'
# @param app [#call]
# @param type [String, Symbol] Type of Authorization
# @param params [Array<String, Proc, #call>] parameters to build the Authorization header.
# If the type is `:basic`, then these can be a login and password pair.
# Otherwise, a single value is expected that will be appended after the type.
# This value can be a proc or an object responding to `.call`, in which case
# it will be invoked on each request.
def initialize(app, type, *params)
@type = type
@params = params
super(app)
end
# @param env [Faraday::Env]
def on_request(env)
return if env.request_headers[KEY]
env.request_headers[KEY] = header_from(@type, env, *@params)
end
private
# @param type [String, Symbol]
# @param env [Faraday::Env]
# @param params [Array]
# @return [String] a header value
def header_from(type, env, *params)
if type.to_s.casecmp('basic').zero? && params.size == 2
Utils.basic_header_from(*params)
elsif params.size != 1
raise ArgumentError, "Unexpected params received (got #{params.size} instead of 1)"
else
value = params.first
if (value.is_a?(Proc) && value.arity == 1) || (value.respond_to?(:call) && value.method(:call).arity == 1)
value = value.call(env)
elsif value.is_a?(Proc) || value.respond_to?(:call)
value = value.call
end
"#{type} #{value}"
end
end
end
end
end
Faraday::Request.register_middleware(authorization: Faraday::Request::Authorization)
|
