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exvcr
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HTTP request/response recording library for elixir, inspired by VCR.
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Files
lib/exvcr/filter.ex
defmodule ExVCR.Filter do
@moduledoc """
Provide filters for request/responses.
"""
@doc """
Filter out senstive data from the response.
"""
def filter_sensitive_data(body) do
replace(body, ExVCR.Setting.get(:filter_sensitive_data))
end
defp replace(body, []), do: body
defp replace(body, [{pattern, placeholder}|tail]) do
replace(String.replace(body, ~r/#{pattern}/, placeholder), tail)
end
@doc """
Filter out query params from the url.
"""
def filter_url_params(url) do
if ExVCR.Setting.get(:filter_url_params) do
strip_query_params(url)
else
url
end |> filter_sensitive_data
end
@doc """
Remove query params from the specified url.
"""
def strip_query_params(url) do
url |> String.replace(~r/\?.+$/, "")
end
@doc """
Removes the headers listed in the response headers blacklist
from the headers
"""
def remove_blacklisted_headers([]), do: []
def remove_blacklisted_headers(headers) do
Enum.filter(headers, fn({key, _value}) ->
is_header_allowed?(key)
end)
end
defp is_header_allowed?(header_name) do
Enum.find(ExVCR.Setting.get(:response_headers_blacklist), fn(x) ->
to_string(header_name) == x
end) == nil
end
end