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37 lines
872 B
Erlang
37 lines
872 B
Erlang
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-module(switch_handler_h).
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-export([init/2]).
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-export([content_types_provided/2]).
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-export([provide/2]).
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-export([info/3]).
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init(Req, State) ->
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{cowboy_rest, Req, State}.
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content_types_provided(Req, State) ->
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{[{<<"text/plain">>, provide}], Req, State}.
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provide(Req0, run) ->
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Req = cowboy_req:stream_reply(200, Req0),
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send_after(0),
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{{switch_handler, cowboy_loop}, Req, 0};
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provide(Req0, hibernate) ->
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Req = cowboy_req:stream_reply(200, Req0),
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send_after(0),
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{{switch_handler, cowboy_loop, hibernate}, Req, 0}.
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send_after(N) ->
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erlang:send_after(100, self(), {stream, msg(N)}).
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msg(0) -> <<"Hello\n">>;
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msg(1) -> <<"streamed\n">>;
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msg(2) -> <<"world!\n">>;
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msg(3) -> stop.
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info({stream, stop}, Req, State) ->
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{stop, Req, State};
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info({stream, What}, Req, State) ->
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cowboy_req:stream_body(What, nofin, Req),
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send_after(State + 1),
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{ok, Req, State + 1}.
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