diff options
Diffstat (limited to 'src/couchdb/couch_httpd.erl')
| -rw-r--r-- | src/couchdb/couch_httpd.erl | 1306 |
1 files changed, 184 insertions, 1122 deletions
diff --git a/src/couchdb/couch_httpd.erl b/src/couchdb/couch_httpd.erl index ba5ba8bb..e0f6b4f5 100644 --- a/src/couchdb/couch_httpd.erl +++ b/src/couchdb/couch_httpd.erl @@ -13,31 +13,19 @@ -module(couch_httpd). -include("couch_db.hrl"). --export([start_link/0, stop/0, handle_request/1, handle_request/2]). +-export([start_link/0, stop/0, handle_request/3]). -% Maximum size of document PUT request body (4GB) --define(MAX_DOC_SIZE, (4*1024*1024*1024)). +-export([header_value/2,header_value/3,qs_value/2,qs_value/3,qs/1,path/1,unquote/1]). +-export([parse_form/1,json_body/1,body/1,doc_etag/1]). +-export([primary_header_value/2,partition/1,serve_file/3]). +-export([start_chunked_response/3,send_chunk/2]). +-export([start_json_response/2, start_json_response/3, end_json_response/1]). +-export([send_response/4,send_method_not_allowed/2]). +-export([send_json/2,send_json/3,send_json/4]). --record(doc_query_args, { - options = [], - rev = "", - open_revs = "" -}). --record(view_query_args, { - start_key = nil, - end_key = {}, - count = 10000000000, % a huge huge default number. Picked so we don't have - % to do different logic for when there is no count - % limit - update = true, - direction = fwd, - start_docid = nil, - end_docid = {}, - skip = 0, - group_level = 0, - reduce = true -}). +% Maximum size of document PUT request body (4GB) +-define(MAX_DOC_SIZE, (4*1024*1024*1024)). start_link() -> % read config and register for configuration changes @@ -47,11 +35,35 @@ start_link() -> BindAddress = couch_config:get("httpd", "bind_address", any), Port = couch_config:get("httpd", "port", "5984"), - DocumentRoot = couch_config:get("httpd", "utils_dir", "../../share/www"), + + UrlHandlersList = lists:map( + fun({UrlKey, SpecStr}) -> + case couch_util:parse_term(SpecStr) of + {ok, {M, F, A}} -> + {list_to_binary(UrlKey), fun(Req) -> apply(M, F, [Req, A]) end}; + {ok, {M, F}} -> + {list_to_binary(UrlKey), fun(Req) -> apply(M, F, [Req]) end} + end + end, couch_config:get("httpd_global_handlers")), + + DbUrlHandlersList = lists:map( + fun({UrlKey, SpecStr}) -> + case couch_util:parse_term(SpecStr) of + {ok, {M, F, A}} -> + {list_to_binary(UrlKey), + fun(Req, Db) -> apply(M, F, [Req, Db, A]) end}; + {ok, {M, F}} -> + {list_to_binary(UrlKey), + fun(Req, Db) -> apply(M, F, [Req, Db]) end} + end + end, couch_config:get("httpd_db_handlers")), + UrlHandlers = dict:from_list(UrlHandlersList), + DbUrlHandlers = dict:from_list(DbUrlHandlersList), + Loop = fun(Req)-> + apply(?MODULE, handle_request, [Req, UrlHandlers, DbUrlHandlers]) + end, % and off we go - Loop = fun (Req) -> apply(couch_httpd, handle_request, - [Req, DocumentRoot]) end, {ok, Pid} = mochiweb_http:start([ {loop, Loop}, {name, ?MODULE}, @@ -63,7 +75,9 @@ start_link() -> ?MODULE:stop(); ("httpd", "port") -> ?MODULE:stop(); - ("httpd", "utils_dir") -> + ("httpd_global_handlers", _) -> + ?MODULE:stop(); + ("httpd_db_handlers", _) -> ?MODULE:stop() end, Pid), @@ -72,1124 +86,131 @@ start_link() -> stop() -> mochiweb_http:stop(?MODULE). -handle_request(config_change) -> - stop(). - -handle_request(Req, DocumentRoot) -> - % alias HEAD to GET as mochiweb takes care of stripping the body - Method = case Req:get(method) of - 'HEAD' -> 'GET'; - - % handling of non standard HTTP verbs. Should be fixed in gen_tcp:recv() - "COPY" -> 'COPY'; - "MOVE" -> 'MOVE'; - StandardMethod -> StandardMethod - end, +handle_request(MochiReq, UrlHandlers, DbUrlHandlers) -> % for the path, use the raw path with the query string and fragment % removed, but URL quoting left intact - {Path, QueryString, _} = mochiweb_util:urlsplit_path(Req:get(raw_path)), - - ?LOG_DEBUG("~p ~s ~p~nQuery String: ~p~nHeaders: ~p", [ - Req:get(method), - Path, - Req:get(version), - QueryString, - mochiweb_headers:to_list(Req:get(headers)) - ]), - - {ok, Resp} = case catch(handle_request(Req, DocumentRoot, Method, Path)) of - {ok, Resp0} -> - {ok, Resp0}; - Error -> - send_error(Req, Error) - end, - - ?LOG_INFO("~s - - ~p ~s ~B", [ - Req:get(peer), - Method, - Path, - Resp:get(code) - ]). - -handle_request(Req, DocumentRoot, Method, Path) -> - % Start = erlang:now(), - X = handle_request0(Req, DocumentRoot, Method, Path), - % io:format("now_diff:~p~n", [timer:now_diff(erlang:now(), Start)]), - X. - -handle_request0(Req, DocumentRoot, Method, Path) -> - case Path of - "/" -> - handle_welcome_request(Req, Method); - "/_all_dbs" -> - handle_all_dbs_request(Req, Method); - "/_replicate" -> - handle_replicate_request(Req, Method); - "/_restart" -> - handle_restart_request(Req, Method); - "/_uuids" -> - handle_uuids_request(Req, Method); - "/_utils" -> - {ok, Req:respond({301, [ - {"Location", "/_utils/"} - ] ++ server_header(), <<>>})}; - "/_utils/" ++ PathInfo -> - {ok, Req:serve_file(PathInfo, DocumentRoot, server_header())}; - "/_config/" ++ Config -> - handle_config_request(Req, Method, {config, Config}); - "/_" ++ _Path -> - throw({not_found, unknown_private_path}); - "/favicon.ico" -> - {ok, Req:serve_file("favicon.ico", DocumentRoot)}; - _Else -> - handle_db_request(Req, Method, {Path}) - end. - -% Global request handlers - -handle_welcome_request(Req, 'GET') -> - send_json(Req, {[ - {couchdb, <<"Welcome">>}, - {version, list_to_binary(couch_server:get_version())} - ]}); - -handle_welcome_request(_Req, _Method) -> - throw({method_not_allowed, "GET,HEAD"}). - -handle_all_dbs_request(Req, 'GET') -> - {ok, DbNames} = couch_server:all_databases(), - send_json(Req, DbNames); - -handle_all_dbs_request(_Req, _Method) -> - throw({method_not_allowed, "GET,HEAD"}). - -handle_replicate_request(Req, 'POST') -> - {Props} = ?JSON_DECODE(Req:recv_body()), - Source = proplists:get_value(<<"source">>, Props), - Target = proplists:get_value(<<"target">>, Props), - {Options} = proplists:get_value(<<"options">>, Props, {[]}), - {ok, {JsonResults}} = couch_rep:replicate(Source, Target, Options), - send_json(Req, {[{ok, true} | JsonResults]}); - -handle_replicate_request(_Req, _Method) -> - throw({method_not_allowed, "POST"}). - -handle_restart_request(Req, 'POST') -> - Response = send_json(Req, {[{ok, true}]}), - spawn(fun() -> couch_server:remote_restart() end), - Response; - -handle_restart_request(_Req, _Method) -> - throw({method_not_allowed, "POST"}). - -handle_uuids_request(Req, 'POST') -> - Count = list_to_integer(proplists:get_value("count", Req:parse_qs(), "1")), - % generate the uuids - UUIDs = [ couch_util:new_uuid() || _ <- lists:seq(1,Count)], - % send a JSON response - send_json(Req, {[{"uuids", UUIDs}]}); - -handle_uuids_request(_Req, _Method) -> - throw({method_not_allowed, "POST"}). - - -% Database request handlers - -handle_db_request(Req, Method, {Path}) -> - UriParts = string:tokens(Path, "/"), - [DbName|Rest] = - [list_to_binary(mochiweb_util:unquote(Part)) || Part <- UriParts], - handle_db_request(Req, Method, {DbName, Rest}); - -handle_db_request(Req, 'PUT', {DbName, []}) -> - case couch_server:create(DbName, []) of - {ok, Db} -> - couch_db:close(Db), - send_json(Req, 201, {[{ok, true}]}); - {error, database_already_exists} -> - Msg = io_lib:format("Database ~p already exists.", [ - binary_to_list(DbName) - ]), - throw({database_already_exists, Msg}); - Error -> - Msg = io_lib:format("Error creating database ~p: ~p", [ - binary_to_list(DbName), Error - ]), - throw({unknown_error, Msg}) - end; - -handle_db_request(Req, 'DELETE', {DbName, []}) -> - case couch_server:delete(DbName) of - ok -> - send_json(Req, 200, {[ - {ok, true} - ]}); - Error -> - throw(Error) - end; - -handle_db_request(Req, Method, {DbName, Rest}) -> - case couch_db:open(DbName, []) of - {ok, Db} -> - try - handle_db_request(Req, Method, {DbName, Db, Rest}) - after - couch_db:close(Db) - end; - Error -> - throw(Error) - end; - -handle_db_request(Req, 'GET', {DbName, Db, []}) -> - {ok, DbInfo} = couch_db:get_db_info(Db), - send_json(Req, {[{db_name, DbName} | DbInfo]}); - -handle_db_request(Req, 'POST', {_DbName, Db, []}) -> - % TODO: Etag handling - Json = ?JSON_DECODE(Req:recv_body(?MAX_DOC_SIZE)), - Doc = couch_doc:from_json_obj(Json), - DocId = couch_util:new_uuid(), - {ok, NewRev} = couch_db:update_doc(Db, Doc#doc{id=DocId, revs=[]}, []), - send_json(Req, 201, {[ - {ok, true}, - {id, DocId}, - {rev, NewRev} - ]}); - -handle_db_request(_Req, _Method, {_DbName, _Db, []}) -> - throw({method_not_allowed, "DELETE,GET,HEAD,POST"}); - -handle_db_request(Req, 'POST', {_DbName, Db, [<<"_bulk_docs">>]}) -> - Options = [], % put options here. - {JsonProps} = ?JSON_DECODE(Req:recv_body(?MAX_DOC_SIZE)), - DocsArray = proplists:get_value(<<"docs">>, JsonProps), - % convert all the doc elements to native docs - case proplists:get_value(<<"new_edits">>, JsonProps, true) of - true -> - Docs = lists:map( - fun({ObjProps} = JsonObj) -> - Doc = couch_doc:from_json_obj(JsonObj), - Id = case Doc#doc.id of - <<>> -> couch_util:new_uuid(); - Id0 -> Id0 - end, - Revs = case proplists:get_value(<<"_rev">>, ObjProps) of - undefined -> []; - Rev -> [Rev] - end, - Doc#doc{id=Id,revs=Revs} - end, - DocsArray), - {ok, ResultRevs} = couch_db:update_docs(Db, Docs, Options), - - % output the results - DocResults = lists:zipwith( - fun(Doc, NewRev) -> - {[{"id", Doc#doc.id}, {"rev", NewRev}]} - end, - Docs, ResultRevs), - send_json(Req, 201, {[ - {ok, true}, - {new_revs, DocResults} - ]}); - - false -> - Docs = [couch_doc:from_json_obj(JsonObj) || JsonObj <- DocsArray], - ok = couch_db:save_docs(Db, Docs, Options), - send_json(Req, 201, {[ - {ok, true} - ]}) - end; - -handle_db_request(_Req, _Method, {_DbName, _Db, [<<"_bulk_docs">>]}) -> - throw({method_not_allowed, "POST"}); - -handle_db_request(Req, 'POST', {_DbName, Db, [<<"_compact">>]}) -> - ok = couch_db:start_compact(Db), - send_json(Req, 202, {[ - {ok, true} - ]}); - -handle_db_request(_Req, _Method, {_DbName, _Db, [<<"_compact">>]}) -> - throw({method_not_allowed, "POST"}); - -handle_db_request(Req, 'POST', {_DbName, Db, [<<"_purge">>]}) -> - {IdsRevs} = ?JSON_DECODE(Req:recv_body(?MAX_DOC_SIZE)), - % validate the json input - [{_Id, [_|_]=_Revs} = IdRevs || IdRevs <- IdsRevs], + RawUri = MochiReq:get(raw_path), + {"/" ++ Path, _, _} = mochiweb_util:urlsplit_path(RawUri), - case couch_db:purge_docs(Db, IdsRevs) of - {ok, PurgeSeq, PurgedIdsRevs} -> - send_json(Req, 200, {[{<<"purge_seq">>, PurgeSeq}, {<<"purged">>, {PurgedIdsRevs}}]}); - Error -> - throw(Error) - end; - -handle_db_request(_Req, _Method, {_DbName, _Db, [<<"_purge">>]}) -> - throw({method_not_allowed, "POST"}); - -% View request handlers - -handle_db_request(Req, 'GET', {_DbName, Db, [<<"_all_docs">>]}) -> - #view_query_args{ - start_key = StartKey, - start_docid = StartDocId, - count = Count, - skip = SkipCount, - direction = Dir - } = QueryArgs = parse_view_query(Req), - {ok, Info} = couch_db:get_db_info(Db), - TotalRowCount = proplists:get_value(doc_count, Info), - - StartId = if is_binary(StartKey) -> StartKey; - true -> StartDocId - end, - - FoldlFun = make_view_fold_fun(Req, QueryArgs, TotalRowCount, - fun couch_db:enum_docs_reduce_to_count/1), - AdapterFun = fun(#full_doc_info{id=Id}=FullDocInfo, Offset, Acc) -> - case couch_doc:to_doc_info(FullDocInfo) of - #doc_info{deleted=false, rev=Rev} -> - FoldlFun({{Id, Id}, {[{rev, Rev}]}}, Offset, Acc); - #doc_info{deleted=true} -> - {ok, Acc} - end - end, - {ok, FoldResult} = couch_db:enum_docs(Db, StartId, Dir, AdapterFun, - {Count, SkipCount, undefined, []}), - finish_view_fold(Req, TotalRowCount, {ok, FoldResult}); - -handle_db_request(_Req, _Method, {_DbName, _Db, [<<"_all_docs">>]}) -> - throw({method_not_allowed, "GET,HEAD"}); - -handle_db_request(Req, 'GET', {_DbName, Db, [<<"_all_docs_by_seq">>]}) -> - #view_query_args{ - start_key = StartKey, - count = Count, - skip = SkipCount, - direction = Dir - } = QueryArgs = parse_view_query(Req), - - {ok, Info} = couch_db:get_db_info(Db), - TotalRowCount = proplists:get_value(doc_count, Info), - - FoldlFun = make_view_fold_fun(Req, QueryArgs, TotalRowCount, - fun couch_db:enum_docs_since_reduce_to_count/1), - StartKey2 = case StartKey of - nil -> 0; - <<>> -> 100000000000; - StartKey when is_integer(StartKey) -> StartKey + HandlerKey = + case mochiweb_util:partition(Path, "/") of + {"", "", ""} -> + <<"/">>; % Special case the root url handler + {FirstPart, _, _} -> + list_to_binary(FirstPart) end, - {ok, FoldResult} = couch_db:enum_docs_since(Db, StartKey2, Dir, - fun(DocInfo, Offset, Acc) -> - #doc_info{ - id=Id, - rev=Rev, - update_seq=UpdateSeq, - deleted=Deleted, - conflict_revs=ConflictRevs, - deleted_conflict_revs=DelConflictRevs - } = DocInfo, - Json = { - [{"rev", Rev}] ++ - case ConflictRevs of - [] -> []; - _ -> [{"conflicts", ConflictRevs}] - end ++ - case DelConflictRevs of - [] -> []; - _ -> [{"deleted_conflicts", DelConflictRevs}] - end ++ - case Deleted of - true -> [{"deleted", true}]; - false -> [] - end - }, - FoldlFun({{UpdateSeq, Id}, Json}, Offset, Acc) - end, {Count, SkipCount, undefined, []}), - finish_view_fold(Req, TotalRowCount, {ok, FoldResult}); - -handle_db_request(_Req, _Method, {_DbName, _Db, ["_all_docs_by_seq"]}) -> - throw({method_not_allowed, "GET,HEAD"}); - -handle_db_request(Req, 'GET', {DbName, _Db, [<<"_view">>, DocId, ViewName]}) -> - #view_query_args{ - start_key = StartKey, - count = Count, - skip = SkipCount, - direction = Dir, - start_docid = StartDocId, - reduce = Reduce - } = QueryArgs = parse_view_query(Req), + ?LOG_DEBUG("~p ~s ~p~nHeaders: ~p", [ + MochiReq:get(method), + RawUri, + MochiReq:get(version), + mochiweb_headers:to_list(MochiReq:get(headers)) + ]), - case couch_view:get_map_view({DbName, <<"_design/", DocId/binary>>, ViewName}) of - {ok, View} -> - {ok, RowCount} = couch_view:get_row_count(View), - Start = {StartKey, StartDocId}, - FoldlFun = make_view_fold_fun(Req, QueryArgs, RowCount, - fun couch_view:reduce_to_count/1), - FoldAccInit = {Count, SkipCount, undefined, []}, - FoldResult = couch_view:fold(View, Start, Dir, FoldlFun, FoldAccInit), - finish_view_fold(Req, RowCount, FoldResult); - {not_found, Reason} -> - case couch_view:get_reduce_view({DbName, <<"_design/", DocId/binary>>, ViewName}) of - {ok, View} -> - case Reduce of - false -> - {reduce, _N, _Lang, MapView} = View, - {ok, RowCount} = couch_view:get_row_count(MapView), - Start = {StartKey, StartDocId}, - FoldlFun = make_view_fold_fun(Req, QueryArgs, RowCount, - fun couch_view:reduce_to_count/1), - FoldAccInit = {Count, SkipCount, undefined, []}, - FoldResult = couch_view:fold(MapView, Start, Dir, FoldlFun, FoldAccInit), - finish_view_fold(Req, RowCount, FoldResult); - _ -> - output_reduce_view(Req, View) - end; - _ -> - throw({not_found, Reason}) - end - end; - -handle_db_request(_Req, _Method, {_DbName, _Db, [<<"_view">>, _DocId, _ViewName]}) -> - throw({method_not_allowed, "GET,HEAD"}); - -handle_db_request(Req, 'POST', {_DbName, Db, [<<"_missing_revs">>]}) -> - {JsonDocIdRevs} = ?JSON_DECODE(Req:recv_body()), - {ok, Results} = couch_db:get_missing_revs(Db, JsonDocIdRevs), - send_json(Req, {[ - {missing_revs, {Results}} - ]}); - -handle_db_request(Req, 'POST', {_DbName, Db, [<<"_increment_update_seq">>]}) -> - % NOTE, use at own risk. This functionality is experimental - % and might go away entirely. - {ok, NewSeq} = couch_db:increment_update_seq(Db), - send_json(Req, {[{ok, true}, - {update_seq, NewSeq} - ]}); - -handle_db_request(Req, 'POST', {DbName, _Db, [<<"_temp_view">>]}) -> - #view_query_args{ - start_key = StartKey, - count = Count, - skip = SkipCount, - direction = Dir, - start_docid = StartDocId - } = QueryArgs = parse_view_query(Req), - - case Req:get_primary_header_value("content-type") of - undefined -> ok; - "application/json" -> ok; - Else -> throw({incorrect_mime_type, Else}) - end, - {Props} = ?JSON_DECODE(Req:recv_body()), - Language = proplists:get_value(<<"language">>, Props, <<"javascript">>), - MapSrc = proplists:get_value(<<"map">>, Props), - case proplists:get_value(<<"reduce">>, Props, null) of - null -> - {ok, View} = couch_view:get_map_view({temp, DbName, Language, MapSrc}), - Start = {StartKey, StartDocId}, + Method = + case MochiReq:get(method) of + % alias HEAD to GET as mochiweb takes care of stripping the body + 'HEAD' -> 'GET'; - {ok, TotalRows} = couch_view:get_row_count(View), + % already an atom + Meth when is_atom(Meth) -> Meth; - FoldlFun = make_view_fold_fun(Req, QueryArgs, TotalRows, - fun couch_view:reduce_to_count/1), - FoldAccInit = {Count, SkipCount, undefined, []}, - FoldResult = couch_view:fold(View, Start, Dir, fun(A, B, C) -> - FoldlFun(A, B, C) - end, FoldAccInit), - finish_view_fold(Req, TotalRows, FoldResult); - - RedSrc -> - {ok, View} = couch_view:get_reduce_view( - {temp, DbName, Language, MapSrc, RedSrc}), - output_reduce_view(Req, View) - end; - -handle_db_request(_Req, _Method, {_DbName, _Db, [<<"_temp_view">>]}) -> - throw({method_not_allowed, "POST"}); - -% Document request handlers - -handle_db_request(Req, Method, {DbName, Db, [<<"_design">>, Name]}) -> - % Special case to enable using an unencoded in the URL of design docs, as - % slashes in document IDs must otherwise be URL encoded - handle_db_request(Req, Method, {DbName, Db, [<<"_design/", Name/binary>>]}); - -handle_db_request(Req, Method, {DbName, Db, [DocId]}) -> - handle_doc_request(Req, Method, DbName, Db,DocId); - -handle_db_request(Req, Method, {DbName, Db, [DocId, FileName]}) -> - handle_attachment_request(Req, Method, DbName, Db, DocId, - FileName). - -output_reduce_view(Req, View) -> - #view_query_args{ - start_key = StartKey, - end_key = EndKey, - count = Count, - skip = Skip, - direction = Dir, - start_docid = StartDocId, - end_docid = EndDocId, - group_level = GroupLevel - } = parse_view_query(Req), - GroupRowsFun = - fun({_Key1,_}, {_Key2,_}) when GroupLevel == 0 -> - true; - ({Key1,_}, {Key2,_}) - when is_integer(GroupLevel) and is_list(Key1) and is_list(Key2) -> - lists:sublist(Key1, GroupLevel) == lists:sublist(Key2, GroupLevel); - ({Key1,_}, {Key2,_}) -> - Key1 == Key2 - end, - Resp = start_json_response(Req, 200), - Resp:write_chunk("{\"rows\":["), - {ok, _} = couch_view:fold_reduce(View, Dir, {StartKey, StartDocId}, {EndKey, EndDocId}, - GroupRowsFun, - fun(_Key, _Red, {AccSeparator,AccSkip,AccCount}) when AccSkip > 0 -> - {ok, {AccSeparator,AccSkip-1,AccCount}}; - (_Key, _Red, {AccSeparator,0,AccCount}) when AccCount == 0 -> - {stop, {AccSeparator,0,AccCount}}; - (_Key, Red, {AccSeparator,0,AccCount}) when GroupLevel == 0 -> - Json = ?JSON_ENCODE({[{key, null}, {value, Red}]}), - Resp:write_chunk(AccSeparator ++ Json), - {ok, {",",0,AccCount-1}}; - (Key, Red, {AccSeparator,0,AccCount}) - when is_integer(GroupLevel) - andalso is_list(Key) -> - Json = ?JSON_ENCODE( - {[{key, lists:sublist(Key, GroupLevel)},{value, Red}]}), - Resp:write_chunk(AccSeparator ++ Json), - {ok, {",",0,AccCount-1}}; - (Key, Red, {AccSeparator,0,AccCount}) -> - Json = ?JSON_ENCODE({[{key, Key}, {value, Red}]}), - Resp:write_chunk(AccSeparator ++ Json), - {ok, {",",0,AccCount-1}} - end, {"", Skip, Count}), - Resp:write_chunk("]}"), - end_json_response(Resp). - - -handle_doc_request(Req, 'DELETE', _DbName, Db, DocId) -> - case extract_header_rev(Req, proplists:get_value("rev", Req:parse_qs())) of - missing_rev -> - {missing_rev, "Document rev/etag must be specified to delete"}; - RevToDelete -> - {ok, NewRev} = couch_db:delete_doc(Db, DocId, [RevToDelete]), - send_json(Req, 200, {[ - {ok, true}, - {id, DocId}, - {rev, NewRev} - ]}) - end; - -handle_doc_request(Req, 'GET', _DbName, Db, DocId) -> - #doc_query_args{ - rev = Rev, - open_revs = Revs, - options = Options - } = parse_doc_query(Req), - case Revs of - [] -> - {Doc, DocRev} = couch_doc_open(Db, DocId, Rev, Options), - Etag = none_match(Req, DocRev), - AdditionalHeaders = case Doc#doc.meta of - [] -> [{"Etag", Etag}]; % output etag when we have no meta - _ -> [] - end, - JsonDoc = couch_doc:to_json_obj(Doc, Options), - send_json(Req, 200, AdditionalHeaders, JsonDoc); - _ -> - {ok, Results} = couch_db:open_doc_revs(Db, DocId, Revs, Options), - Resp = start_json_response(Req, 200), - Resp:write_chunk("["), - % We loop through the docs. The first time through the separator - % is whitespace, then a comma on subsequent iterations. - lists:foldl( - fun(Result, AccSeparator) -> - case Result of - {ok, Doc} -> - JsonDoc = couch_doc:to_json_obj(Doc, Options), - Json = ?JSON_ENCODE({[{ok, JsonDoc}]}), - Resp:write_chunk(AccSeparator ++ Json); - {{not_found, missing}, RevId} -> - Json = ?JSON_ENCODE({[{"missing", RevId}]}), - Resp:write_chunk(AccSeparator ++ Json) - end, - "," % AccSeparator now has a comma - end, - "", Results), - Resp:write_chunk("]"), - end_json_response(Resp) - end; - -handle_doc_request(Req, 'POST', _DbName, Db, DocId) -> - Form = mochiweb_multipart:parse_form(Req), - Rev = list_to_binary(proplists:get_value("_rev", Form)), - Doc = case couch_db:open_doc_revs(Db, DocId, [Rev], []) of - {ok, [{ok, Doc0}]} -> Doc0#doc{revs=[Rev]}; - {ok, [Error]} -> throw(Error) - end, - - NewAttachments = [ - {list_to_binary(Name), {list_to_binary(ContentType), Content}} || - {Name, {ContentType, _}, Content} <- - proplists:get_all_values("_attachments", Form) - ], - #doc{attachments=Attachments} = Doc, - NewDoc = Doc#doc{ - attachments = Attachments ++ NewAttachments - }, - {ok, NewRev} = couch_db:update_doc(Db, NewDoc, []), - - send_json(Req, 201, [{"Etag", "\"" ++ NewRev ++ "\""}], {obj, [ - {ok, true}, - {id, DocId}, - {rev, NewRev} - ]}); - -handle_doc_request(Req, 'PUT', _DbName, Db, DocId) -> - Json = ?JSON_DECODE(Req:recv_body(?MAX_DOC_SIZE)), - Doc = couch_doc:from_json_obj(Json), - ExplicitRev = - case Doc#doc.revs of - [Rev0|_] -> Rev0; - [] -> undefined - end, - case extract_header_rev(Req, ExplicitRev) of - missing_rev -> - Revs = []; - Rev -> - Revs = [Rev] - end, - {ok, NewRev} = couch_db:update_doc(Db, Doc#doc{id=DocId, revs=Revs}, []), - send_json(Req, 201, [{"Etag", <<"\"", NewRev/binary, "\"">>}], {[ - {ok, true}, - {id, DocId}, - {rev, NewRev} - ]}); - -handle_doc_request(Req, 'COPY', _DbName, Db, SourceDocId) -> - SourceRev = - case extract_header_rev(Req, proplists:get_value("rev", Req:parse_qs())) of - missing_rev -> []; - Rev -> Rev - end, - - {TargetDocId, TargetRev} = parse_copy_destination_header(Req), - - % open revision Rev or Current - {Doc, _DocRev} = couch_doc_open(Db, SourceDocId, SourceRev, []), - - % save new doc - {ok, NewTargetRev} = couch_db:update_doc(Db, Doc#doc{id=TargetDocId, revs=TargetRev}, []), - - send_json(Req, 201, [{"Etag", "\"" ++ binary_to_list(NewTargetRev) ++ "\""}], {[ - {ok, true}, - {id, TargetDocId}, - {rev, NewTargetRev} - ]}); - -handle_doc_request(Req, 'MOVE', _DbName, Db, SourceDocId) -> - SourceRev = - case extract_header_rev(Req, proplists:get_value("rev", Req:parse_qs())) of - missing_rev -> - throw({ - bad_request, - "MOVE requires a specified rev parameter for the origin resource."} - ); - Rev -> Rev - end, - - {TargetDocId, TargetRev} = parse_copy_destination_header(Req), - % open revision Rev or Current - {Doc, _DocRev} = couch_doc_open(Db, SourceDocId, SourceRev, []), - - % save new doc & delete old doc in one operation - Docs = [ - Doc#doc{id=TargetDocId, revs=TargetRev}, - #doc{id=SourceDocId, revs=[SourceRev], deleted=true} - ], - - {ok, ResultRevs} = couch_db:update_docs(Db, Docs, []), - - DocResults = lists:zipwith( - fun(FDoc, NewRev) -> - {[{id, FDoc#doc.id}, {rev, NewRev}]} - end, - Docs, ResultRevs), - send_json(Req, 201, {[ - {ok, true}, - {new_revs, DocResults} - ]}); - -handle_doc_request(_Req, _Method, _DbName, _Db, _DocId) -> - throw({method_not_allowed, "DELETE,GET,HEAD,POST,PUT,COPY,MOVE"}). - -% Useful for debugging -% couch_doc_open(Db, DocId) -> -% couch_doc_open(Db, DocId, [], []). - -couch_doc_open(Db, DocId, Rev, Options) -> - case Rev of - "" -> % open most recent rev - case couch_db:open_doc(Db, DocId, Options) of - {ok, #doc{revs=[DocRev|_]}=Doc} -> - {Doc, DocRev}; - Error -> - throw(Error) - end; - _ -> % open a specific rev (deletions come back as stubs) - case couch_db:open_doc_revs(Db, DocId, [Rev], Options) of - {ok, [{ok, Doc}]} -> - {Doc, Rev}; - {ok, [Else]} -> - throw(Else) - end - end. - -% Attachment request handlers - -handle_attachment_request(Req, 'GET', _DbName, Db, DocId, FileName) -> - case couch_db:open_doc(Db, DocId, []) of - {ok, #doc{attachments=Attachments}} -> - case proplists:get_value(FileName, Attachments) of - undefined -> - throw({not_found, missing}); - {Type, Bin} -> - Resp = Req:respond({200, [ - {"Cache-Control", "must-revalidate"}, - {"Content-Type", binary_to_list(Type)}, - {"Content-Length", integer_to_list(couch_doc:bin_size(Bin))} - ] ++ server_header(), chunked}), - couch_doc:bin_foldl(Bin, - fun(BinSegment, []) -> - ok = Resp:write_chunk(BinSegment), - {ok, []} - end, - [] - ), - Resp:write_chunk(""), - {ok, Resp} - end; - Error -> - throw(Error) - end; - -handle_attachment_request(Req, Method, _DbName, Db, DocId, FileName) - when (Method == 'PUT') or (Method == 'DELETE') -> - - NewAttachment = case Method of - 'DELETE' -> - []; - _ -> - [{FileName, { - list_to_binary(Req:get_header_value("Content-Type")), - Req:recv_body(?MAX_DOC_SIZE) - }}] + % Non standard HTTP verbs aren't atoms (COPY, MOVE etc) so convert when + % possible (if any module references the atom, then it's existing). + Meth -> try list_to_existing_atom(Meth) catch _ -> Meth end end, - - Doc = case extract_header_rev(Req, proplists:get_value("rev", Req:parse_qs())) of - missing_rev -> % make the new doc - #doc{id=DocId}; - Rev -> - case couch_db:open_doc_revs(Db, DocId, [Rev], []) of - {ok, [{ok, Doc0}]} -> Doc0#doc{revs=[Rev]}; - {ok, [Error]} -> throw(Error) - end + HttpReq = #httpd{ + mochi_req = MochiReq, + method = Method, + path_parts = [list_to_binary(couch_httpd:unquote(Part)) + || Part <- string:tokens(Path, "/")], + db_url_handlers = DbUrlHandlers + }, + + DefaultFun = fun couch_httpd_db:handle_request/1, + HandlerFun = couch_util:dict_find(HandlerKey, UrlHandlers, DefaultFun), + + {ok, Resp} = + try + HandlerFun(HttpReq) + catch + Error -> + send_error(HttpReq, Error) end, - #doc{attachments=Attachments} = Doc, - DocEdited = Doc#doc{ - attachments = NewAttachment ++ proplists:delete(FileName, Attachments) - }, - {ok, UpdatedRev} = couch_db:update_doc(Db, DocEdited, []), - send_json(Req, case Method of 'DELETE' -> 200; _ -> 201 end, {[ - {ok, true}, - {id, DocId}, - {rev, UpdatedRev} - ]}); - -handle_attachment_request(_Req, _Method, _DbName, _Db, _DocId, _FileName) -> - throw({method_not_allowed, "GET,HEAD,DELETE,PUT"}). - -% Config request handlers + ?LOG_INFO("~s - - ~p ~s ~B", [ + MochiReq:get(peer), + MochiReq:get(method), + RawUri, + Resp:get(code) + ]), + {ok, Resp}. -handle_config_request(_Req, Method, {config, Config}) -> - Parts = string:tokens(Config, "/"), - handle_config_request(_Req, Method, {Parts}); -% GET /_config -handle_config_request(Req, 'GET', {[]}) -> - send_json(Req, 200, {dict:to_list(dict:map( - fun(_, Value) -> {Value} end, - lists:foldl( - fun({{Section, Option}, Value}, Acc) -> - SecBin = list_to_binary(Section), - OptBin = list_to_binary(Option), - ValBin = list_to_binary(Value), - dict:append(SecBin, {OptBin, ValBin}, Acc) - end, - dict:new(), - couch_config:all() - ) - ))}); -% GET /_config/Section -handle_config_request(Req, 'GET', {[Section]}) -> - KVs = [ - {list_to_binary(Key), list_to_binary(Value)} || - {Key, Value} <- - couch_config:get(Section) - ], - send_json(Req, 200, {KVs}); +% Utilities -% PUT /_config/Section/Key -% "value" -handle_config_request(Req, 'PUT', {[Section, Key]}) -> - Value = binary_to_list(Req:recv_body()), - ok = couch_config:set(Section, Key, Value), - send_json(Req, 200, {[ - {ok, true} - ]}); +partition(Path) -> + mochiweb_util:partition(Path, "/"). -% GET /_config/Section/Key -handle_config_request(Req, 'GET', {[Section, Key]}) -> - case couch_config:get(Section, Key, null) of - null -> - throw({not_found, unknown_config_value}); - Value -> - send_json(Req, 200, list_to_binary(Value)) - end; +header_value(#httpd{mochi_req=MochiReq}, Key) -> + MochiReq:get_header_value(Key). -% DELETE /_config/Section/Key -handle_config_request(Req, 'DELETE', {[Section, Key]}) -> - case couch_config:get(Section, Key, null) of - null -> - throw({not_found, unknown_config_value}); - OldValue -> - couch_config:delete(Section, Key), - send_json(Req, 200, list_to_binary(OldValue)) +header_value(#httpd{mochi_req=MochiReq}, Key, Default) -> + case MochiReq:get_header_value(Key) of + undefined -> Default; + Value -> Value end. +primary_header_value(#httpd{mochi_req=MochiReq}, Key) -> + MochiReq:get_primary_header_value(Key). + +serve_file(#httpd{mochi_req=MochiReq}, RelativePath, DocumentRoot) -> + {ok, MochiReq:serve_file(RelativePath, DocumentRoot, server_header())}. -% View request handling internals - -reverse_key_default(nil) -> {}; -reverse_key_default({}) -> nil; -reverse_key_default(Key) -> Key. - -parse_view_query(Req) -> - QueryList = Req:parse_qs(), - lists:foldl(fun({Key,Value}, Args) -> - case {Key, Value} of - {"", _} -> - Args; - {"key", Value} -> - JsonKey = ?JSON_DECODE(Value), - Args#view_query_args{start_key=JsonKey,end_key=JsonKey}; - {"startkey_docid", DocId} -> - Args#view_query_args{start_docid=list_to_binary(DocId)}; - {"endkey_docid", DocId} -> - Args#view_query_args{end_docid=list_to_binary(DocId)}; - {"startkey", Value} -> - Args#view_query_args{start_key=?JSON_DECODE(Value)}; - {"endkey", Value} -> - Args#view_query_args{end_key=?JSON_DECODE(Value)}; - {"count", Value} -> - case (catch list_to_integer(Value)) of - Count when is_integer(Count) -> - if Count < 0 -> - Args#view_query_args { - direction = - if Args#view_query_args.direction == rev -> fwd; - true -> rev - end, - count=Count, - start_key = reverse_key_default(Args#view_query_args.start_key), - start_docid = reverse_key_default(Args#view_query_args.start_docid), - end_key = reverse_key_default(Args#view_query_args.end_key), - end_docid = reverse_key_default(Args#view_query_args.end_docid)}; - true -> - Args#view_query_args{count=Count} - end; - _Error -> - Msg = io_lib:format("Bad URL query value, number expected: count=~s", [Value]), - throw({query_parse_error, Msg}) - end; - {"update", "false"} -> - Args#view_query_args{update=false}; - {"descending", "true"} -> - case Args#view_query_args.direction of - fwd -> - Args#view_query_args { - direction = rev, - start_key = reverse_key_default(Args#view_query_args.start_key), - start_docid = reverse_key_default(Args#view_query_args.start_docid), - end_key = reverse_key_default(Args#view_query_args.end_key), - end_docid = reverse_key_default(Args#view_query_args.end_docid)}; - _ -> - Args %already reversed - end; - {"descending", "false"} -> - % The descending=false behaviour is the default behaviour, so we - % simpply ignore it. This is only for convenience when playing with - % the HTTP API, so that a user doesn't get served an error when - % flipping true to false in the descending option. - Args; - {"skip", Value} -> - case (catch list_to_integer(Value)) of - Count when is_integer(Count) -> - Args#view_query_args{skip=Count}; - _Error -> - Msg = lists:flatten(io_lib:format( - "Bad URL query value, number expected: skip=~s", [Value])), - throw({query_parse_error, Msg}) - end; - {"group", "true"} -> - Args#view_query_args{group_level=exact}; - {"group_level", LevelStr} -> - Args#view_query_args{group_level=list_to_integer(LevelStr)}; - {"reduce", "true"} -> - Args#view_query_args{reduce=true}; - {"reduce", "false"} -> - Args#view_query_args{reduce=false}; - _ -> % unknown key - Msg = lists:flatten(io_lib:format( - "Bad URL query key:~s", [Key])), - throw({query_parse_error, Msg}) - end - end, #view_query_args{}, QueryList). - +qs_value(Req, Key) -> + qs_value(Req, Key, undefined). + +qs_value(Req, Key, Default) -> + proplists:get_value(Key, qs(Req), Default). -make_view_fold_fun(Req, QueryArgs, TotalViewCount, ReduceCountFun) -> - #view_query_args{ - end_key = EndKey, - end_docid = EndDocId, - direction = Dir, - count = Count - } = QueryArgs, +qs(#httpd{mochi_req=MochiReq}) -> + MochiReq:parse_qs(). - PassedEndFun = - case Dir of - fwd -> - fun(ViewKey, ViewId) -> - couch_view:less_json([EndKey, EndDocId], [ViewKey, ViewId]) - end; - rev-> - fun(ViewKey, ViewId) -> - couch_view:less_json([ViewKey, ViewId], [EndKey, EndDocId]) - end - end, +path(#httpd{mochi_req=MochiReq}) -> + MochiReq:get(path). - NegCountFun = fun({{Key, DocId}, Value}, OffsetReds, - {AccCount, AccSkip, Resp, AccRevRows}) -> - Offset = ReduceCountFun(OffsetReds), - PassedEnd = PassedEndFun(Key, DocId), - case {PassedEnd, AccCount, AccSkip, Resp} of - {true, _, _, _} -> % The stop key has been passed, stop looping. - {stop, {AccCount, AccSkip, Resp, AccRevRows}}; - {_, 0, _, _} -> % we've done "count" rows, stop foldling - {stop, {0, 0, Resp, AccRevRows}}; - {_, _, AccSkip, _} when AccSkip > 0 -> - {ok, {AccCount, AccSkip - 1, Resp, AccRevRows}}; - {_, _, _, undefined} -> - Resp2 = start_json_response(Req, 200), - Offset2 = TotalViewCount - Offset - - lists:min([TotalViewCount - Offset, - AccCount]), - JsonBegin = io_lib:format("{\"total_rows\":~w,\"offset\":~w,\"rows\":[\r\n", - [TotalViewCount, Offset2]), - Resp2:write_chunk(JsonBegin), - JsonObj = {[{id, DocId}, {key, Key}, {value, Value}]}, - {ok, {AccCount + 1, 0, Resp2, [?JSON_ENCODE(JsonObj) | AccRevRows]}}; - {_, AccCount, _, Resp} -> - - JsonObj = {[{id, DocId}, {key, Key}, {value, Value}]}, - {ok, {AccCount + 1, 0, Resp, [?JSON_ENCODE(JsonObj), ",\r\n" | AccRevRows]}} - end - end, +unquote(UrlEncodedString) -> + mochiweb_util:unquote(UrlEncodedString). - PosCountFun = fun({{Key, DocId}, Value}, OffsetReds, - {AccCount, AccSkip, Resp, AccRevRows}) -> - Offset = ReduceCountFun(OffsetReds), % I think we only need this call once per view - PassedEnd = PassedEndFun(Key, DocId), - case {PassedEnd, AccCount, AccSkip, Resp} of - {true, _, _, _} -> - % The stop key has been passed, stop looping. - {stop, {AccCount, AccSkip, Resp, AccRevRows}}; - {_, 0, _, _} -> - % we've done "count" rows, stop foldling - {stop, {0, 0, Resp, AccRevRows}}; - {_, _, AccSkip, _} when AccSkip > 0 -> - {ok, {AccCount, AccSkip - 1, Resp, AccRevRows}}; - {_, _, _, undefined} -> - Resp2 = start_json_response(Req, 200), - JsonBegin = io_lib:format("{\"total_rows\":~w,\"offset\":~w,\"rows\":[\r\n", - [TotalViewCount, Offset]), - JsonObj = {[{id, DocId}, {key, Key}, {value, Value}]}, - - Resp2:write_chunk(JsonBegin ++ ?JSON_ENCODE(JsonObj)), - {ok, {AccCount - 1, 0, Resp2, AccRevRows}}; - {_, AccCount, _, Resp} when (AccCount > 0) -> - JsonObj = {[{id, DocId}, {key, Key}, {value, Value}]}, - Resp:write_chunk(",\r\n" ++ ?JSON_ENCODE(JsonObj)), - {ok, {AccCount - 1, 0, Resp, AccRevRows}} - end - end, - case Count > 0 of - true -> PosCountFun; - false -> NegCountFun - end. +parse_form(#httpd{mochi_req=MochiReq}) -> + mochiweb_multipart:parse_form(MochiReq). -finish_view_fold(Req, TotalRows, FoldResult) -> - case FoldResult of - {ok, {_, _, undefined, _}} -> - % nothing found in the view, nothing has been returned - % send empty view - send_json(Req, 200, {[ - {total_rows, TotalRows}, - {rows, []} - ]}); - {ok, {_, _, Resp, AccRevRows}} -> - % end the view - Resp:write_chunk(AccRevRows ++ "\r\n]}"), - end_json_response(Resp); - Error -> - throw(Error) - end. - -% Document request handling internals +body(#httpd{mochi_req=MochiReq}) -> + MochiReq:recv_body(?MAX_DOC_SIZE). -parse_doc_query(Req) -> - lists:foldl(fun({Key,Value}, Args) -> - case {Key, Value} of - {"attachments", "true"} -> - Options = [attachments | Args#doc_query_args.options], - Args#doc_query_args{options=Options}; - {"meta", "true"} -> - Options = [revs_info, conflicts, deleted_conflicts | Args#doc_query_args.options], - Args#doc_query_args{options=Options}; - {"revs", "true"} -> - Options = [revs | Args#doc_query_args.options], - Args#doc_query_args{options=Options}; - {"revs_info", "true"} -> - Options = [revs_info | Args#doc_query_args.options], - Args#doc_query_args{options=Options}; - {"conflicts", "true"} -> - Options = [conflicts | Args#doc_query_args.options], - Args#doc_query_args{options=Options}; - {"deleted_conflicts", "true"} -> - Options = [deleted_conflicts | Args#doc_query_args.options], - Args#doc_query_args{options=Options}; - {"rev", Rev} -> - Args#doc_query_args{rev=list_to_binary(Rev)}; - {"open_revs", "all"} -> - Args#doc_query_args{open_revs=all}; - {"open_revs", RevsJsonStr} -> - JsonArray = ?JSON_DECODE(RevsJsonStr), - Args#doc_query_args{open_revs=JsonArray}; - _Else -> % unknown key value pair, ignore. - Args - end - end, #doc_query_args{}, Req:parse_qs()). +json_body(#httpd{mochi_req=MochiReq}) -> + ?JSON_DECODE(MochiReq:recv_body(?MAX_DOC_SIZE)). -% Utilities +doc_etag(#doc{revs=[DiskRev|_]}) -> + "\"" ++ binary_to_list(DiskRev) ++ "\"". -none_match(Req, Tag) -> - Etag = "\"" ++ binary_to_list(Tag) ++ "\"", - Etags = case Req:get_header_value("If-None-Match") of - undefined -> - []; - Tags -> - string:tokens(Tags, ", ") - end, - case lists:member(Etag, Etags) of - true -> - throw({not_modified, Etag}); - false -> - Etag - end. +start_chunked_response(#httpd{mochi_req=MochiReq}, Code, Headers) -> + {ok, MochiReq:respond({Code, Headers ++ server_header(), chunked})}. -error_to_json(Error) -> - {HttpCode, Atom, Reason} = error_to_json0(Error), - FormattedReason = - case (catch io_lib:format("~s", [Reason])) of - List when is_list(List) -> - lists:flatten(List); - _ -> - lists:flatten(io_lib:format("~p", [Reason])) % else term to text - end, - Json = {[ - {error, Atom}, - {reason, list_to_binary(FormattedReason)} - ]}, - {HttpCode, Json}. - -error_to_json0(bad_request) -> - {400, bad_request, "Bad request"}; -error_to_json0({bad_request, Reason}) -> - {400, bad_request, Reason}; -error_to_json0(not_found) -> - {404, not_found, "missing"}; -error_to_json0({missing_rev, Msg}) -> - {412, missing_rev, Msg}; -error_to_json0({not_found, Reason}) -> - {404, not_found, Reason}; -error_to_json0({database_already_exists, Reason}) -> - {409, database_already_exists, Reason}; -error_to_json0(conflict) -> - {412, conflict, "Update conflict"}; -error_to_json0({doc_validation, Msg}) -> - {406, doc_validation, Msg}; -error_to_json0({Id, Reason}) when is_atom(Id) -> - {500, Id, Reason}; -error_to_json0(Error) -> - {500, error, Error}. +send_chunk(Resp, Data) -> + Resp:write_chunk(Data), + {ok, Resp}. -extract_header_rev(Req, ExplictRev) when is_list(ExplictRev)-> - extract_header_rev(Req, list_to_binary(ExplictRev)); -extract_header_rev(Req, ExplictRev) -> - Etag = case Req:get_header_value("If-Match") of - undefined -> undefined; - Tag -> string:strip(Tag, both, $") +send_response(#httpd{mochi_req=MochiReq}, Code, Headers, Body) -> + if Code >= 400 -> + ?LOG_DEBUG("HTTPd ~p error response:~n ~s", [Code, Body]); + true -> ok end, - case {ExplictRev, Etag} of - {undefined, undefined} -> missing_rev; - {_, undefined} -> ExplictRev; - {undefined, _} -> list_to_binary(Etag); - _ when ExplictRev == Etag -> list_to_binary(Etag); - _ -> - throw({bad_request, "Document rev and etag have different values"}) - end. + {ok, MochiReq:respond({Code, Headers ++ server_header(), Body})}. -parse_copy_destination_header(Req) -> - Destination = Req:get_header_value("Destination"), - case regexp:match(Destination, "\\?") of - nomatch -> - {list_to_binary(Destination), []}; - {match, _, _} -> - {ok, [DocId, RevQueryOptions]} = regexp:split(Destination, "\\?"), - {ok, [_RevQueryKey, Rev]} = regexp:split(RevQueryOptions, "="), - {list_to_binary(DocId), [list_to_binary(Rev)]} - end. - -send_error(Req, {method_not_allowed, Methods}) -> - {ok, Req:respond({405, [{"Allow", Methods}] ++ server_header(), <<>>})}; -send_error(Req, {modified, Etag}) -> - {ok, Req:respond({412, [{"Etag", Etag}] ++ server_header(), <<>>})}; -send_error(Req, {not_modified, Etag}) -> - {ok, Req:respond({304, [{"Etag", Etag}] ++ server_header(), <<>>})}; -send_error(Req, Error) -> - {Code, Json} = error_to_json(Error), - ?LOG_INFO("HTTP Error (code ~w): ~p", [Code, Error]), - send_error(Req, Code, Json). - -send_error(Req, Code, Json) -> - send_json(Req, Code, Json). +send_method_not_allowed(Req, Methods) -> + send_response(Req, 405, [{"Allow", Methods}], <<>>). send_json(Req, Value) -> send_json(Req, 200, Value). @@ -1201,10 +222,8 @@ send_json(Req, Code, Headers, Value) -> DefaultHeaders = [ {"Content-Type", negotiate_content_type(Req)}, {"Cache-Control", "must-revalidate"} - ] ++ server_header(), - Body = ?JSON_ENCODE(Value), - Resp = Req:respond({Code, DefaultHeaders ++ Headers, Body}), - {ok, Resp}. + ], + send_response(Req, Code, DefaultHeaders ++ Headers, ?JSON_ENCODE(Value)). start_json_response(Req, Code) -> start_json_response(Req, Code, []). @@ -1213,19 +232,62 @@ start_json_response(Req, Code, Headers) -> DefaultHeaders = [ {"Content-Type", negotiate_content_type(Req)}, {"Cache-Control", "must-revalidate"} - ] ++ server_header(), - Req:respond({Code, DefaultHeaders ++ Headers, chunked}). + ], + start_chunked_response(Req, Code, DefaultHeaders ++ Headers). end_json_response(Resp) -> - Resp:write_chunk(""), - {ok, Resp}. + send_chunk(Resp, []). + + + +send_error(Req, bad_request) -> + send_error(Req, 400, <<"bad_request">>, <<>>); +send_error(Req, {bad_request, Reason}) -> + send_error(Req, 400, <<"bad_request">>, Reason); +send_error(Req, not_found) -> + send_error(Req, 404, <<"not_found">>, <<"Missing">>); +send_error(Req, {not_found, Reason}) -> + send_error(Req, 404, <<"not_found">>, Reason); +send_error(Req, conflict) -> + send_error(Req, 412, <<"conflict">>, <<"Document update conflict.">>); +send_error(Req, {doc_validation, Msg}) -> + send_error(Req, 406, <<"doc_validation">>, Msg); +send_error(Req, file_exists) -> + send_error(Req, 409, <<"file_exists">>, <<"The database could not be" + "created, the file already exists.">>); +send_error(Req, {Error, Reason}) -> + send_error(Req, 500, Error, Reason); +send_error(Req, Error) -> + send_error(Req, 500, <<"error">>, Error). + + + +send_error(Req, Code, Error, Msg) when is_atom(Error) -> + send_error(Req, Code, list_to_binary(atom_to_list(Error)), Msg); +send_error(Req, Code, Error, Msg) when is_list(Msg) -> + case (catch list_to_binary(Msg)) of + Bin when is_binary(Bin) -> + send_error(Req, Code, Error, Bin); + _ -> + send_error(Req, Code, Error, io_lib:format("~p", [Msg])) + end; +send_error(Req, Code, Error, Msg) when not is_binary(Error) -> + send_error(Req, Code, list_to_binary(io_lib:format("~p", [Error])), Msg); +send_error(Req, Code, Error, Msg) when not is_binary(Msg) -> + send_error(Req, Code, Error, list_to_binary(io_lib:format("~p", [Msg]))); +send_error(Req, Code, Error, <<>>) -> + send_json(Req, Code, {[{error, Error}]}); +send_error(Req, Code, Error, Msg) -> + send_json(Req, Code, {[{error, Error}, {reason, Msg}]}). + + -negotiate_content_type(Req) -> +negotiate_content_type(#httpd{mochi_req=MochiReq}) -> %% Determine the appropriate Content-Type header for a JSON response %% depending on the Accept header in the request. A request that explicitly %% lists the correct JSON MIME type will get that type, otherwise the %% response will have the generic MIME type "text/plain" - AcceptedTypes = case Req:get_header_value("Accept") of + AcceptedTypes = case MochiReq:get_header_value("Accept") of undefined -> []; AcceptHeader -> string:tokens(AcceptHeader, ", ") end, |