| % 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. |
| |
| -module(chttpd_plugin). |
| |
| -export([ |
| before_request/1, |
| after_request/2, |
| handle_error/1, |
| before_response/4, |
| before_serve_file/5 |
| ]). |
| |
| -define(SERVICE_ID, chttpd). |
| |
| -include_lib("couch/include/couch_db.hrl"). |
| |
| %% ------------------------------------------------------------------ |
| %% API Function Definitions |
| %% ------------------------------------------------------------------ |
| |
| before_request(HttpReq) -> |
| [HttpReq1] = with_pipe(before_request, [HttpReq]), |
| {ok, HttpReq1}. |
| |
| after_request(HttpReq, Result) -> |
| [_, Result1] = with_pipe(after_request, [HttpReq, Result]), |
| {ok, Result1}. |
| |
| handle_error(Error) -> |
| [Error1] = with_pipe(handle_error, [Error]), |
| Error1. |
| |
| before_response(HttpReq0, Code0, Headers0, Value0) -> |
| [HttpReq, Code, Headers, Value] = |
| with_pipe(before_response, [HttpReq0, Code0, Headers0, Value0]), |
| {ok, {HttpReq, Code, Headers, Value}}. |
| |
| before_serve_file(Req0, Code0, Headers0, RelativePath0, DocumentRoot0) -> |
| [HttpReq, Code, Headers, RelativePath, DocumentRoot] = |
| with_pipe(before_serve_file, [ |
| Req0, Code0, Headers0, RelativePath0, DocumentRoot0]), |
| {ok, {HttpReq, Code, Headers, RelativePath, DocumentRoot}}. |
| |
| %% ------------------------------------------------------------------ |
| %% Internal Function Definitions |
| %% ------------------------------------------------------------------ |
| |
| with_pipe(Func, Args) -> |
| do_apply(Func, Args, [pipe]). |
| |
| do_apply(Func, Args, Opts) -> |
| Handle = couch_epi:get_handle(?SERVICE_ID), |
| couch_epi:apply(Handle, ?SERVICE_ID, Func, Args, Opts). |