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Diffstat (limited to 'src/chttpd/src/chttpd_show.erl')
| -rw-r--r-- | src/chttpd/src/chttpd_show.erl | 331 |
1 files changed, 0 insertions, 331 deletions
diff --git a/src/chttpd/src/chttpd_show.erl b/src/chttpd/src/chttpd_show.erl deleted file mode 100644 index e798a98d6..000000000 --- a/src/chttpd/src/chttpd_show.erl +++ /dev/null @@ -1,331 +0,0 @@ -% 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_show). - --export([handle_doc_show_req/3, handle_doc_update_req/3, handle_view_list_req/3]). - --include_lib("couch/include/couch_db.hrl"). --include_lib("couch_mrview/include/couch_mrview.hrl"). - -% /db/_design/foo/_show/bar/docid -% show converts a json doc to a response of any content-type. -% it looks up the doc an then passes it to the query server. -% then it sends the response from the query server to the http client. - -maybe_open_doc(Db, DocId, Options) -> - case fabric:open_doc(Db, DocId, Options) of - {ok, Doc} -> - chttpd_stats:incr_reads(), - Doc; - {not_found, _} -> - nil - end. - -handle_doc_show_req( - #httpd{ - path_parts = [_, _, _, _, ShowName, DocId] - } = Req, - Db, - DDoc -) -> - % open the doc - Options = [conflicts, {user_ctx, Req#httpd.user_ctx}], - Doc = maybe_open_doc(Db, DocId, Options), - - % we don't handle revs here b/c they are an internal api - % returns 404 if there is no doc with DocId - handle_doc_show(Req, Db, DDoc, ShowName, Doc, DocId); -handle_doc_show_req( - #httpd{ - path_parts = [_, _, _, _, ShowName, DocId | Rest] - } = Req, - Db, - DDoc -) -> - DocParts = [DocId | Rest], - DocId1 = ?l2b(string:join([?b2l(P) || P <- DocParts], "/")), - - % open the doc - Options = [conflicts, {user_ctx, Req#httpd.user_ctx}], - Doc = maybe_open_doc(Db, DocId1, Options), - - % we don't handle revs here b/c they are an internal api - % pass 404 docs to the show function - handle_doc_show(Req, Db, DDoc, ShowName, Doc, DocId1); -handle_doc_show_req( - #httpd{ - path_parts = [_, _, _, _, ShowName] - } = Req, - Db, - DDoc -) -> - % with no docid the doc is nil - handle_doc_show(Req, Db, DDoc, ShowName, nil); -handle_doc_show_req(Req, _Db, _DDoc) -> - chttpd:send_error(Req, 404, <<"show_error">>, <<"Invalid path.">>). - -handle_doc_show(Req, Db, DDoc, ShowName, Doc) -> - handle_doc_show(Req, Db, DDoc, ShowName, Doc, null). - -handle_doc_show(Req, Db, DDoc, ShowName, Doc, DocId) -> - %% Will throw an exception if the _show handler is missing - couch_util:get_nested_json_value(DDoc#doc.body, [<<"shows">>, ShowName]), - % get responder for ddoc/showname - CurrentEtag = show_etag(Req, Doc, DDoc, []), - chttpd:etag_respond(Req, CurrentEtag, fun() -> - JsonReq = chttpd_external:json_req_obj(Req, Db, DocId), - JsonDoc = couch_query_servers:json_doc(Doc), - [<<"resp">>, ExternalResp] = - couch_query_servers:ddoc_prompt( - DDoc, - [<<"shows">>, ShowName], - [JsonDoc, JsonReq] - ), - JsonResp = apply_etag(ExternalResp, CurrentEtag), - chttpd_external:send_external_response(Req, JsonResp) - end). - -show_etag(#httpd{user_ctx = UserCtx} = Req, Doc, DDoc, More) -> - Accept = chttpd:header_value(Req, "Accept"), - DocPart = - case Doc of - nil -> nil; - Doc -> chttpd:doc_etag(Doc) - end, - couch_httpd:make_etag({ - couch_httpd:doc_etag(DDoc), DocPart, Accept, UserCtx#user_ctx.roles, More - }). - -% /db/_design/foo/update/bar/docid -% updates a doc based on a request -% handle_doc_update_req(#httpd{method = 'GET'}=Req, _Db, _DDoc) -> -% % anything but GET -% send_method_not_allowed(Req, "POST,PUT,DELETE,ETC"); - -handle_doc_update_req( - #httpd{ - path_parts = [_, _, _, _, UpdateName] - } = Req, - Db, - DDoc -) -> - send_doc_update_response(Req, Db, DDoc, UpdateName, nil, null); -handle_doc_update_req( - #httpd{ - path_parts = [_, _, _, _, UpdateName | DocIdParts] - } = Req, - Db, - DDoc -) -> - DocId = ?l2b(string:join([?b2l(P) || P <- DocIdParts], "/")), - Options = [conflicts, {user_ctx, Req#httpd.user_ctx}], - Doc = maybe_open_doc(Db, DocId, Options), - send_doc_update_response(Req, Db, DDoc, UpdateName, Doc, DocId); -handle_doc_update_req(Req, _Db, _DDoc) -> - chttpd:send_error(Req, 404, <<"update_error">>, <<"Invalid path.">>). - -send_doc_update_response(Req, Db, DDoc, UpdateName, Doc, DocId) -> - %% Will throw an exception if the _update handler is missing - couch_util:get_nested_json_value(DDoc#doc.body, [<<"updates">>, UpdateName]), - JsonReq = chttpd_external:json_req_obj(Req, Db, DocId), - JsonDoc = couch_query_servers:json_doc(Doc), - Cmd = [<<"updates">>, UpdateName], - W = chttpd:qs_value(Req, "w", integer_to_list(mem3:quorum(Db))), - UpdateResp = couch_query_servers:ddoc_prompt(DDoc, Cmd, [JsonDoc, JsonReq]), - JsonResp = - case UpdateResp of - [<<"up">>, {NewJsonDoc}, {JsonResp0}] -> - case chttpd:header_value(Req, "X-Couch-Full-Commit", "false") of - "true" -> - Options = [full_commit, {user_ctx, Req#httpd.user_ctx}, {w, W}]; - _ -> - Options = [{user_ctx, Req#httpd.user_ctx}, {w, W}] - end, - NewDoc = couch_db:doc_from_json_obj_validate(Db, {NewJsonDoc}), - couch_doc:validate_docid(NewDoc#doc.id), - {UpdateResult, NewRev} = fabric:update_doc(Db, NewDoc, Options), - chttpd_stats:incr_writes(), - NewRevStr = couch_doc:rev_to_str(NewRev), - case {UpdateResult, NewRev} of - {ok, _} -> - Code = 201; - {accepted, _} -> - Code = 202 - end, - {JsonResp1} = apply_headers(JsonResp0, [ - {<<"X-Couch-Update-NewRev">>, NewRevStr}, - {<<"X-Couch-Id">>, couch_util:url_encode(NewDoc#doc.id)} - ]), - {[{<<"code">>, Code} | JsonResp1]}; - [<<"up">>, _Other, {JsonResp0}] -> - {[{<<"code">>, 200} | JsonResp0]} - end, - % todo set location field - chttpd_external:send_external_response(Req, JsonResp). - -% view-list request with view and list from same design doc. -handle_view_list_req( - #httpd{ - method = Method, - path_parts = [_, _, DesignName, _, ListName, ViewName] - } = Req, - Db, - DDoc -) when - Method =:= 'GET' orelse Method =:= 'OPTIONS' --> - Keys = chttpd:qs_json_value(Req, "keys", undefined), - handle_view_list(Req, Db, DDoc, ListName, {DesignName, ViewName}, Keys); -% view-list request with view and list from different design docs. -handle_view_list_req( - #httpd{ - method = Method, - path_parts = [_, _, _, _, ListName, DesignName, ViewName] - } = Req, - Db, - DDoc -) when - Method =:= 'GET' orelse Method =:= 'OPTIONS' --> - Keys = chttpd:qs_json_value(Req, "keys", undefined), - handle_view_list(Req, Db, DDoc, ListName, {DesignName, ViewName}, Keys); -handle_view_list_req(#httpd{method = Method} = Req, _Db, _DDoc) when - Method =:= 'GET' orelse Method =:= 'OPTIONS' --> - chttpd:send_error(Req, 404, <<"list_error">>, <<"Invalid path.">>); -handle_view_list_req( - #httpd{ - method = 'POST', - path_parts = [_, _, DesignName, _, ListName, ViewName] - } = Req, - Db, - DDoc -) -> - chttpd:validate_ctype(Req, "application/json"), - {Props} = chttpd:json_body(Req), - Keys = proplists:get_value(<<"keys">>, Props, undefined), - handle_view_list( - Req#httpd{req_body = {Props}}, - Db, - DDoc, - ListName, - {DesignName, ViewName}, - Keys - ); -handle_view_list_req( - #httpd{ - method = 'POST', - path_parts = [_, _, _, _, ListName, DesignName, ViewName] - } = Req, - Db, - DDoc -) -> - chttpd:validate_ctype(Req, "application/json"), - {Props} = chttpd:json_body(Req), - Keys = proplists:get_value(<<"keys">>, Props, undefined), - handle_view_list( - Req#httpd{req_body = {Props}}, - Db, - DDoc, - ListName, - {DesignName, ViewName}, - Keys - ); -handle_view_list_req(#httpd{method = 'POST'} = Req, _Db, _DDoc) -> - chttpd:send_error(Req, 404, <<"list_error">>, <<"Invalid path.">>); -handle_view_list_req(Req, _Db, _DDoc) -> - chttpd:send_method_not_allowed(Req, "GET,POST,HEAD"). - -handle_view_list(Req, Db, DDoc, LName, {ViewDesignName, ViewName}, Keys) -> - %% Will throw an exception if the _list handler is missing - couch_util:get_nested_json_value(DDoc#doc.body, [<<"lists">>, LName]), - DbName = couch_db:name(Db), - {ok, VDoc} = ddoc_cache:open(DbName, <<"_design/", ViewDesignName/binary>>), - CB = fun list_cb/2, - QueryArgs = couch_mrview_http:parse_body_and_query(Req, Keys), - Options = [{user_ctx, Req#httpd.user_ctx}], - couch_query_servers:with_ddoc_proc(DDoc, fun(QServer) -> - Acc = #lacc{ - lname = LName, - req = Req, - qserver = QServer, - db = Db - }, - case ViewName of - <<"_all_docs">> -> - fabric:all_docs(Db, Options, CB, Acc, QueryArgs); - _ -> - fabric:query_view( - Db, - Options, - VDoc, - ViewName, - CB, - Acc, - QueryArgs - ) - end - end). - -list_cb({row, Row} = Msg, Acc) -> - case lists:keymember(doc, 1, Row) of - true -> chttpd_stats:incr_reads(); - false -> ok - end, - chttpd_stats:incr_rows(), - couch_mrview_show:list_cb(Msg, Acc); -list_cb(Msg, Acc) -> - couch_mrview_show:list_cb(Msg, Acc). - -% Maybe this is in the proplists API -% todo move to couch_util -json_apply_field(H, {L}) -> - json_apply_field(H, L, []). -json_apply_field({Key, NewValue}, [{Key, _OldVal} | Headers], Acc) -> - % drop matching keys - json_apply_field({Key, NewValue}, Headers, Acc); -json_apply_field({Key, NewValue}, [{OtherKey, OtherVal} | Headers], Acc) -> - % something else is next, leave it alone. - json_apply_field({Key, NewValue}, Headers, [{OtherKey, OtherVal} | Acc]); -json_apply_field({Key, NewValue}, [], Acc) -> - % end of list, add ours - {[{Key, NewValue} | Acc]}. - -apply_etag(JsonResp, undefined) -> - JsonResp; -apply_etag({ExternalResponse}, CurrentEtag) -> - % Here we embark on the delicate task of replacing or creating the - % headers on the JsonResponse object. We need to control the Etag and - % Vary headers. If the external function controls the Etag, we'd have to - % run it to check for a match, which sort of defeats the purpose. - apply_headers(ExternalResponse, [ - {<<"ETag">>, CurrentEtag}, - {<<"Vary">>, <<"Accept">>} - ]). - -apply_headers(JsonResp, []) -> - JsonResp; -apply_headers(JsonResp, NewHeaders) -> - case couch_util:get_value(<<"headers">>, JsonResp) of - undefined -> - {[{<<"headers">>, {NewHeaders}} | JsonResp]}; - JsonHeaders -> - Headers = apply_headers1(JsonHeaders, NewHeaders), - NewKV = {<<"headers">>, Headers}, - {lists:keyreplace(<<"headers">>, 1, JsonResp, NewKV)} - end. -apply_headers1(JsonHeaders, [{Key, Value} | Rest]) -> - NewJsonHeaders = json_apply_field({Key, Value}, JsonHeaders), - apply_headers1(NewJsonHeaders, Rest); -apply_headers1(JsonHeaders, []) -> - JsonHeaders. |