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<erl module=rest> | |
-include("qlc.hrl"). | |
%-include("../../include/yaws_api.hrl"). | |
-export([out/1, addAirport/4, handle/2 ]). | |
%-compile(export_all). | |
-define(RECORD_TYPE, airport). | |
-define(RECORD_KEY_FIELD, code). | |
-record(?RECORD_TYPE, {?RECORD_KEY_FIELD, city, country, name}). | |
out(Arg) -> | |
Method = method(Arg), | |
io:format("~p:~p ~p Request ~n", [?MODULE, ?LINE, Method]), | |
handle(Method, Arg). | |
method(Arg) -> | |
Rec = Arg#arg.req, | |
Rec#http_request.method. | |
convert_to_Json(Lines) -> | |
Data = [{obj, | |
[{airport, Line#?RECORD_TYPE.code}, | |
{city, Line#?RECORD_TYPE.city}, | |
{country, Line#?RECORD_TYPE.country}, | |
{name, Line#?RECORD_TYPE.name}]} | |
|| Line <- Lines], | |
JsonData = {obj, [{data, Data}]}, | |
rfc4627:encode(JsonData). | |
addAirport(Code, City, Country, Name) -> | |
NewRec = #?RECORD_TYPE{ | |
?RECORD_KEY_FIELD = Code, | |
city = City, | |
country = Country, | |
name = Name}, | |
io:format("~p:~p Adding Airport ~p~n", [?MODULE, ?LINE, NewRec]), | |
Add = fun() -> | |
mnesia:write(NewRec) | |
end, | |
{atomic, _Rec} = mnesia:transaction(Add), | |
NewRec. | |
handle('GET', _Arg) -> | |
io:format("~n ~p:~p GET Request ~n", [?MODULE, ?LINE]), | |
Records = do(qlc:q([X || X <- mnesia:table(?RECORD_TYPE)])), | |
Json = convert_to_Json(Records), | |
io:format("~n ~p:~p GET Request Response ~p ~n", [?MODULE, ?LINE, Json]), | |
{html, Json}; | |
handle('POST', Arg) -> | |
io:format("~n Request Data ~p: ~n", [Arg#arg.clidata]), | |
{ok, Json, _} = rfc4627:decode(Arg#arg.clidata), | |
io:format("~n~p:~p POST request ~p~n", [?MODULE, ?LINE, Json]), | |
Airport = rfc4627:get_field(Json, "airport", <<>>), | |
City = rfc4627:get_field(Json, "city", <<>>), | |
Country = rfc4627:get_field(Json, "country", <<>>), | |
Name = rfc4627:get_field(Json, "country", <<>>), | |
_Status = addAirport(Airport, City, Country, Name), | |
[{status, 201}, {html, Arg#arg.clidata}]; | |
handle('PUT', Arg) -> | |
[IndexValue,_] = string:tokens(Arg#arg.pathinfo), | |
{ok, Json, _} = rfc4627:decode(Arg#arg.clidata), | |
io:format("~p:~p PUT request ~p ~p~n", [?MODULE, ?LINE, IndexValue, Json]), | |
Airport = rfc4627:get_field(Json, "airport", <<>>), | |
City = rfc4627:get_field(Json, "city", <<>>), | |
Country = rfc4627:get_field(Json, "country", <<>>), | |
Name = rfc4627:get_field(Json, "country", <<>>), | |
NewRec = #?RECORD_TYPE{ | |
?RECORD_KEY_FIELD = Airport, | |
city = City, | |
country = Country, | |
name = Name}, | |
io:format("~p:~p Renaming ~p", [?MODULE, ?LINE, NewRec]), | |
ChangeName = fun() -> | |
mnesia:delete({?RECORD_KEY_FIELD, IndexValue}), | |
mnesia:write(NewRec) | |
end, | |
{atomic, _Rec} = mnesia:transaction(ChangeName), | |
[{status, 200}, | |
{html, IndexValue}]; | |
handle('DELETE', Arg) -> | |
[IndexValue, _] = string:tokens(Arg#arg.pathinfo), | |
io:format("~p:~p DELETE request ~p", [?MODULE, ?LINE, IndexValue]), | |
Delete = fun() -> | |
mnesia:delete({?RECORD_KEY_FIELD, IndexValue}) | |
end, | |
Resp = mnesia:transaction(Delete), | |
case Resp of | |
{atomic, ok} -> | |
[{status, 204}]; | |
{_, Error} -> | |
io:format("~p:~p Error ~p ", [?MODULE, ?LINE, Error]), | |
[{status, 400}, {html, Error}] | |
end; | |
handle(Method,_) -> | |
[{error, "Unknown method " ++ Method }, | |
{status, 405}, | |
{header, "Allow: GET, HEAD, POST, PUT, DELETE"} | |
]. | |
do(Q) -> | |
F = fun() -> | |
qlc:e(Q) | |
end, | |
{atomic, Value} = mnesia:transaction(F), | |
Value. | |
</erl> |
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