Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
Fetching contributors…

Cannot retrieve contributors at this time

134 lines (122 sloc) 4.97 kb
%% @author Justin Sheehy <justin@basho.com>
%% @author Andy Gross <andy@basho.com>
%% @copyright 2007-2008 Basho Technologies
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%% http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%% @doc Mochiweb interface for webmachine.
-module(webmachine_mochiweb).
-author('Justin Sheehy <justin@basho.com>').
-author('Andy Gross <andy@basho.com>').
-export([start/1, stop/0, loop/1]).
start(Options) ->
{DispatchList, Options1} = get_option(dispatch, Options),
{ErrorHandler0, Options2} = get_option(error_handler, Options1),
{EnablePerfLog, Options3} = get_option(enable_perf_logger, Options2),
ErrorHandler =
case ErrorHandler0 of
undefined ->
webmachine_error_handler;
EH -> EH
end,
{LogDir, Options4} = get_option(log_dir, Options3),
case whereis(webmachine_logger) of
undefined ->
webmachine_sup:start_logger(LogDir);
_ ->
ignore
end,
case EnablePerfLog of
true ->
case whereis(webmachine_perf_logger) of
undefined ->
application_set_unless_env(webmachine, enable_perf_logger, true),
webmachine_sup:start_perf_logger(LogDir);
_ ->
ignore
end;
_ ->
ignore
end,
{PName, Options5} = case get_option(name, Options4) of
{undefined, _} -> {?MODULE, Options4};
{PN, O5} -> {PN, O5}
end,
application_set_unless_env(webmachine, dispatch_list, DispatchList),
application_set_unless_env(webmachine, error_handler, ErrorHandler),
mochiweb_http:start([{name, PName}, {loop, fun loop/1} | Options5]).
stop() ->
{registered_name, PName} = process_info(self(), registered_name),
mochiweb_http:stop(PName).
loop(MochiReq) ->
Req = webmachine:new_request(mochiweb, MochiReq),
{ok, DispatchList} = application:get_env(webmachine, dispatch_list),
Host = case host_headers(Req) of
[H|_] -> H;
[] -> []
end,
{Path, _} = Req:path(),
{RD, _} = Req:get_reqdata(),
%% Run the dispatch code, catch any errors...
try webmachine_dispatcher:dispatch(Host, Path, DispatchList, RD) of
{no_dispatch_match, _UnmatchedHost, _UnmatchedPathTokens} ->
handle_error(404, {none, none, []}, Req);
{Mod, ModOpts, HostTokens, Port, PathTokens, Bindings,
AppRoot, StringPath} ->
BootstrapResource = webmachine_resource:new(x,x,x,x),
{ok,RS1} = Req:load_dispatch_data(Bindings,HostTokens,Port,
PathTokens,AppRoot,StringPath),
XReq1 = {webmachine_request,RS1},
try
{ok, Resource} = BootstrapResource:wrap(Mod, ModOpts),
{ok,RS2} = XReq1:set_metadata('resource_module', Mod),
webmachine_decision_core:handle_request(Resource, RS2)
catch
error:Error ->
handle_error(500, {error, Error}, Req)
end
catch
Type : Error ->
handle_error(500, {Type, Error}, Req)
end.
handle_error(Code, Error, Req) ->
{ok, ErrorHandler} = application:get_env(webmachine, error_handler),
{ErrorHTML,ReqState1} =
ErrorHandler:render_error(Code, Req, Error),
Req1 = {webmachine_request,ReqState1},
{ok,ReqState2} = Req1:append_to_response_body(ErrorHTML),
Req2 = {webmachine_request,ReqState2},
{ok,ReqState3} = Req2:send_response(Code),
Req3 = {webmachine_request,ReqState3},
{LogData,_ReqState4} = Req3:log_data(),
case application:get_env(webmachine,webmachine_logger_module) of
{ok, LogModule} ->
spawn(LogModule, log_access, [LogData]);
_ -> nop
end.
get_option(Option, Options) ->
{proplists:get_value(Option, Options), proplists:delete(Option, Options)}.
application_set_unless_env(App, Var, Value) ->
Current = application:get_all_env(App),
CurrentKeys = proplists:get_keys(Current),
case lists:member(Var, CurrentKeys) of
true ->
ok;
false ->
application:set_env(App, Var, Value)
end.
host_headers(Req) ->
[ V || {V,_ReqState} <- [Req:get_header_value(H)
|| H <- ["x-forwarded-host",
"x-forwarded-server",
"host"]],
V /= undefined].
Jump to Line
Something went wrong with that request. Please try again.