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Nova is a web application framework

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nova src nova_correlation_plugin.erl
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src/nova_correlation_plugin.erl 

-module(nova_correlation_plugin).

-behaviour(nova_plugin).



-export([pre_request/2,

         post_request/2,

         plugin_info/0]).



pre_request(Req, _) ->

    UUID = uuid:uuid_to_string(uuid:get_v4()),

    Req1 = cowboy_req:set_resp_header(<<"x-correlation-id">>, UUID, Req),

    {ok, Req1}.



post_request(Req, _) ->

    {ok, Req}.



plugin_info() ->

    {<<"nova_cors_plugin">>, <<"0.1.0">>, <<"">>, <<"Add CORS headers to request">>, []}.