/a.ex
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August 29, 2015 14:11
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defmodule WrangleTest.Disabled do | |
use Wrangle | |
plug :serve | |
decide :service_available?, do: false | |
end | |
# compiled decision tree | |
defp(do_decide(:handle_service_not_available, var!(conn))) do | |
Plug.Conn.resp(var!(conn), 503, "Service not available.") | |
end |
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defmodule WrangleTest.Simple do | |
use Wrangle | |
plug :serve | |
handle :ok, _ do | |
"HELLO!" | |
end | |
end | |
# compiled decision tree | |
defp(do_decide(:handle_ok, var!(conn))) do | |
content = case(var!(conn)) do | |
_ -> | |
"HELLO!" | |
end | |
Plug.Conn.resp(var!(conn), 200, content) | |
end | |
defp(do_decide(:handle_precondition_failed, var!(conn))) do | |
Plug.Conn.resp(var!(conn), 412, "Precondition failed.") | |
end | |
defp(do_decide(:if_match_exists?, var!(conn))) do | |
if(has_header(var!(conn), "if-match")) do | |
if(var!(conn).assigns().headers()["if-match"] == "*") do | |
do_decide(:if_unmodified_since_exists?, var!(conn)) | |
else | |
do_decide(:handle_precondition_failed, var!(conn)) | |
end | |
else | |
do_decide(:if_unmodified_since_exists?, var!(conn)) | |
end | |
end | |
defp(do_decide(:if_none_match_exists?, var!(conn))) do | |
if(has_header(var!(conn), "if-none-match")) do | |
if(var!(conn).assigns().headers()["if-none-match"] == "*") do | |
if(var!(conn).method() in ["GET", "HEAD"]) do | |
Plug.Conn.resp(var!(conn), 304, "") | |
else | |
do_decide(:handle_precondition_failed, var!(conn)) | |
end | |
else | |
do_decide(:handle_ok, var!(conn)) | |
end | |
else | |
do_decide(:handle_ok, var!(conn)) | |
end | |
end | |
defp(do_decide(:if_unmodified_since_exists?, var!(conn))) do | |
if(has_header(var!(conn), "if-unmodified-since")) do | |
case(handle_decision(var!(conn), ( | |
datestring = to_char_list(var!(conn).assigns().headers()["if-unmodified-since"]) | |
case(:httpd_util.convert_request_date(datestring)) do | |
:bad_date -> | |
false | |
date -> | |
{true, assign(var!(conn), :if_unmodified_since_date, date)} | |
end | |
))) do | |
{true, var!(conn)} -> | |
do_decide(:handle_precondition_failed, var!(conn)) | |
{false, var!(conn)} -> | |
do_decide(:if_none_match_exists?, var!(conn)) | |
end | |
else | |
do_decide(:if_none_match_exists?, var!(conn)) | |
end | |
end | |
defp(do_decide(:known_method?, var!(conn))) do | |
if(var!(conn).method() in @known_methods) do | |
if(var!(conn).method() in @allowed_methods) do | |
if(var!(conn).method() == "OPTIONS") do | |
Plug.Conn.resp(var!(conn), 200, "") | |
else | |
case(handle_decision(var!(conn), if(var!(conn).assigns().headers()["accept"]) do | |
true | |
else | |
{false, assign(var!(conn), :media_type, ConNeg.find_best(:accept, "*/*", @available_media_types))} | |
end)) do | |
{true, var!(conn)} -> | |
case(handle_decision(var!(conn), ( | |
type = ConNeg.find_best(:accept, var!(conn).assigns().headers()["accept"], @available_media_types) | |
{!is_nil(type), assign(var!(conn), :media_type, type)} | |
))) do | |
{true, var!(conn)} -> | |
do_decide(:if_match_exists?, var!(conn)) | |
{false, var!(conn)} -> | |
Plug.Conn.resp(var!(conn), 406, "No acceptable resource available.") | |
end | |
{false, var!(conn)} -> | |
do_decide(:if_match_exists?, var!(conn)) | |
end | |
end | |
else | |
Plug.Conn.resp(var!(conn), 405, "Method not allowed.") | |
end | |
else | |
Plug.Conn.resp(var!(conn), 501, "Unknown method.") | |
end | |
end |
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defmodule WrangleTest.R do | |
use Wrangle | |
plug :serve | |
def etag(_conn) do | |
1635 | |
end | |
@available_media_types ["text/html", "application/json"] | |
@available_charsets ["utf-8"] | |
handle :ok, %Plug.Conn{assigns: %{media_type: "text/html"}} do | |
"HELLO" | |
end | |
handle :ok, %Plug.Conn{assigns: %{media_type: "application/json"}} do | |
~s({"message": "HELLO"}) | |
end | |
def last_modified(_conn) do | |
{{2014, 12, 13}, {11, 36, 32}} | |
end | |
end | |
# compiled decision tree | |
defp(do_decide(:accept_charset_exists?, var!(conn))) do | |
if(has_header(var!(conn), "accept-charset")) do | |
case(handle_decision(var!(conn), ( | |
charset = ConNeg.find_best(:charset, var!(conn).assigns().headers()["accept-charset"], @available_charsets) | |
{!is_nil(charset), assign(var!(conn), :charset, charset)} | |
))) do | |
{true, var!(conn)} -> | |
do_decide(:if_match_exists?, var!(conn)) | |
{false, var!(conn)} -> | |
do_decide(:handle_not_acceptable, var!(conn)) | |
end | |
else | |
do_decide(:if_match_exists?, var!(conn)) | |
end | |
end | |
defp(do_decide(:handle_not_acceptable, var!(conn))) do | |
Plug.Conn.resp(var!(conn), 406, "No acceptable resource available.") | |
end | |
defp(do_decide(:handle_not_modified, var!(conn))) do | |
Plug.Conn.resp(var!(conn), 304, "") | |
end | |
defp(do_decide(:handle_ok, var!(conn))) do | |
content = case(var!(conn)) do | |
%Plug.Conn{assigns: %{media_type: "text/html"}} -> | |
"HELLO" | |
%Plug.Conn{assigns: %{media_type: "application/json"}} -> | |
~s"{\"message\": \"HELLO\"}" | |
end | |
Plug.Conn.resp(var!(conn), 200, content) | |
end | |
defp(do_decide(:handle_precondition_failed, var!(conn))) do | |
Plug.Conn.resp(var!(conn), 412, "Precondition failed.") | |
end | |
defp(do_decide(:if_match_exists?, var!(conn))) do | |
if(has_header(var!(conn), "if-match")) do | |
if(var!(conn).assigns().headers()["if-match"] == "*") do | |
do_decide(:if_unmodified_since_exists?, var!(conn)) | |
else | |
case(handle_decision(var!(conn), ( | |
etag = format_etag(etag(var!(conn))) | |
{etag == var!(conn).assigns().headers()["if-match"], assign(var!(conn), :etag, etag)} | |
))) do | |
{true, var!(conn)} -> | |
do_decide(:if_unmodified_since_exists?, var!(conn)) | |
{false, var!(conn)} -> | |
do_decide(:handle_precondition_failed, var!(conn)) | |
end | |
end | |
else | |
do_decide(:if_unmodified_since_exists?, var!(conn)) | |
end | |
end | |
defp(do_decide(:if_modified_since_exists?, var!(conn))) do | |
if(has_header(var!(conn), "if-modified-since")) do | |
case(handle_decision(var!(conn), ( | |
datestring = to_char_list(var!(conn).assigns().headers()["if-modified-since"]) | |
case(:httpd_util.convert_request_date(datestring)) do | |
:bad_date -> | |
false | |
date -> | |
{true, assign(var!(conn), :if_modified_since_date, date)} | |
end | |
))) do | |
{true, var!(conn)} -> | |
case(handle_decision(var!(conn), case(last_modified(var!(conn))) do | |
nil -> | |
true | |
last_modified -> | |
modsincedate = var!(conn).assigns()[:if_modified_since_date] | |
case(last_modified == modsincedate) do | |
true -> | |
false | |
false -> | |
{true, assign(var!(conn), :last_modified, last_modified)} | |
end | |
end)) do | |
{true, var!(conn)} -> | |
do_decide(:handle_ok, var!(conn)) | |
{false, var!(conn)} -> | |
do_decide(:handle_not_modified, var!(conn)) | |
end | |
{false, var!(conn)} -> | |
do_decide(:handle_ok, var!(conn)) | |
end | |
else | |
do_decide(:handle_ok, var!(conn)) | |
end | |
end | |
defp(do_decide(:if_none_match?, var!(conn))) do | |
if(var!(conn).method() in ["GET", "HEAD"]) do | |
do_decide(:handle_not_modified, var!(conn)) | |
else | |
do_decide(:handle_precondition_failed, var!(conn)) | |
end | |
end | |
defp(do_decide(:if_none_match_exists?, var!(conn))) do | |
if(has_header(var!(conn), "if-none-match")) do | |
if(var!(conn).assigns().headers()["if-none-match"] == "*") do | |
do_decide(:if_none_match?, var!(conn)) | |
else | |
case(handle_decision(var!(conn), ( | |
etag = format_etag(etag(var!(conn))) | |
{etag == var!(conn).assigns().headers()["if-none-match"], assign(var!(conn), :etag, etag)} | |
))) do | |
{true, var!(conn)} -> | |
do_decide(:if_none_match?, var!(conn)) | |
{false, var!(conn)} -> | |
do_decide(:if_modified_since_exists?, var!(conn)) | |
end | |
end | |
else | |
do_decide(:if_modified_since_exists?, var!(conn)) | |
end | |
end | |
defp(do_decide(:if_unmodified_since_exists?, var!(conn))) do | |
if(has_header(var!(conn), "if-unmodified-since")) do | |
case(handle_decision(var!(conn), ( | |
datestring = to_char_list(var!(conn).assigns().headers()["if-unmodified-since"]) | |
case(:httpd_util.convert_request_date(datestring)) do | |
:bad_date -> | |
false | |
date -> | |
{true, assign(var!(conn), :if_unmodified_since_date, date)} | |
end | |
))) do | |
{true, var!(conn)} -> | |
case(handle_decision(var!(conn), case(last_modified(var!(conn))) do | |
nil -> | |
true | |
last_modified -> | |
unmodsincedate = var!(conn).assigns()[:if_unmodified_since_date] | |
case(last_modified == unmodsincedate) do | |
true -> | |
{false, assign(var!(conn), :last_modified, last_modified)} | |
false -> | |
true | |
end | |
end)) do | |
{true, var!(conn)} -> | |
do_decide(:handle_precondition_failed, var!(conn)) | |
{false, var!(conn)} -> | |
do_decide(:if_none_match_exists?, var!(conn)) | |
end | |
{false, var!(conn)} -> | |
do_decide(:if_none_match_exists?, var!(conn)) | |
end | |
else | |
do_decide(:if_none_match_exists?, var!(conn)) | |
end | |
end | |
defp(do_decide(:known_method?, var!(conn))) do | |
if(var!(conn).method() in @known_methods) do | |
if(var!(conn).method() in @allowed_methods) do | |
if(var!(conn).method() == "OPTIONS") do | |
Plug.Conn.resp(var!(conn), 200, "") | |
else | |
case(handle_decision(var!(conn), if(var!(conn).assigns().headers()["accept"]) do | |
true | |
else | |
{false, assign(var!(conn), :media_type, ConNeg.find_best(:accept, "*/*", @available_media_types))} | |
end)) do | |
{true, var!(conn)} -> | |
case(handle_decision(var!(conn), ( | |
type = ConNeg.find_best(:accept, var!(conn).assigns().headers()["accept"], @available_media_types) | |
{!is_nil(type), assign(var!(conn), :media_type, type)} | |
))) do | |
{true, var!(conn)} -> | |
do_decide(:accept_charset_exists?, var!(conn)) | |
{false, var!(conn)} -> | |
do_decide(:handle_not_acceptable, var!(conn)) | |
end | |
{false, var!(conn)} -> | |
do_decide(:accept_charset_exists?, var!(conn)) | |
end | |
end | |
else | |
Plug.Conn.resp(var!(conn), 405, "Method not allowed.") | |
end | |
else | |
Plug.Conn.resp(var!(conn), 501, "Unknown method.") | |
end | |
end |
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