1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
|
-module(fabric).
-include_lib("mem3/include/mem3.hrl").
-include_lib("couch/include/couch_db.hrl").
% DBs
-export([all_dbs/0, all_dbs/1, create_db/1, create_db/2, delete_db/1,
delete_db/2, get_db_info/1, get_doc_count/1, set_revs_limit/3,
set_security/3, get_revs_limit/1, get_security/1]).
% Documents
-export([open_doc/3, open_revs/4, get_missing_revs/2, update_doc/3,
update_docs/3, att_receiver/2]).
% Views
-export([all_docs/4, changes/4, query_view/3, query_view/4, query_view/6,
get_view_group_info/2]).
% miscellany
-export([design_docs/1, reset_validation_funs/1]).
-include("fabric.hrl").
% db operations
all_dbs() ->
all_dbs(<<>>).
all_dbs(Prefix) when is_list(Prefix) ->
all_dbs(list_to_binary(Prefix));
all_dbs(Prefix) when is_binary(Prefix) ->
Length = byte_size(Prefix),
MatchingDbs = ets:foldl(fun(#shard{dbname=DbName}, Acc) ->
case DbName of
<<Prefix:Length/binary, _/binary>> ->
[DbName | Acc];
_ ->
Acc
end
end, [], partitions),
{ok, lists:usort(MatchingDbs)}.
get_db_info(DbName) ->
fabric_db_info:go(dbname(DbName)).
get_doc_count(DbName) ->
fabric_db_doc_count:go(dbname(DbName)).
create_db(DbName) ->
create_db(DbName, []).
create_db(DbName, Options) ->
fabric_db_create:go(dbname(DbName), opts(Options)).
delete_db(DbName) ->
delete_db(DbName, []).
delete_db(DbName, Options) ->
fabric_db_delete:go(dbname(DbName), opts(Options)).
set_revs_limit(DbName, Limit, Options) when is_integer(Limit), Limit > 0 ->
fabric_db_meta:set_revs_limit(dbname(DbName), Limit, opts(Options)).
get_revs_limit(DbName) ->
{ok, Db} = fabric_util:get_db(dbname(DbName)),
try couch_db:get_revs_limit(Db) after catch couch_db:close(Db) end.
set_security(DbName, SecObj, Options) ->
fabric_db_meta:set_security(dbname(DbName), SecObj, opts(Options)).
get_security(DbName) ->
{ok, Db} = fabric_util:get_db(dbname(DbName)),
try couch_db:get_security(Db) after catch couch_db:close(Db) end.
% doc operations
open_doc(DbName, Id, Options) ->
fabric_doc_open:go(dbname(DbName), docid(Id), opts(Options)).
open_revs(DbName, Id, Revs, Options) ->
fabric_doc_open_revs:go(dbname(DbName), docid(Id), Revs, opts(Options)).
get_missing_revs(DbName, IdsRevs) when is_list(IdsRevs) ->
Sanitized = [idrevs(IdR) || IdR <- IdsRevs],
fabric_doc_missing_revs:go(dbname(DbName), Sanitized).
update_doc(DbName, Doc, Options) ->
case update_docs(DbName, [Doc], opts(Options)) of
{ok, [{ok, NewRev}]} ->
{ok, NewRev};
{ok, [Error]} ->
throw(Error);
{ok, []} ->
% replication success
#doc{revs = {Pos, [RevId | _]}} = doc(Doc),
{ok, {Pos, RevId}}
end.
update_docs(DbName, Docs, Options) ->
try fabric_doc_update:go(dbname(DbName), docs(Docs), opts(Options))
catch {aborted, PreCommitFailures} ->
{aborted, PreCommitFailures}
end.
att_receiver(Req, Length) ->
fabric_doc_attachments:receiver(Req, Length).
all_docs(DbName, Callback, Acc0, #view_query_args{} = QueryArgs) when
is_function(Callback, 2) ->
fabric_view_all_docs:go(dbname(DbName), QueryArgs, Callback, Acc0).
changes(DbName, Callback, Acc0, Options) ->
% TODO use a keylist for Options instead of #changes_args, BugzID 10281
Feed = Options#changes_args.feed,
fabric_view_changes:go(dbname(DbName), Feed, Options, Callback, Acc0).
query_view(DbName, DesignName, ViewName) ->
query_view(DbName, DesignName, ViewName, #view_query_args{}).
query_view(DbName, DesignName, ViewName, QueryArgs) ->
Callback = fun default_callback/2,
query_view(DbName, DesignName, ViewName, Callback, [], QueryArgs).
query_view(DbName, Design, ViewName, Callback, Acc0, QueryArgs) ->
Db = dbname(DbName), View = name(ViewName),
case is_reduce_view(Db, Design, View, QueryArgs) of
true ->
Mod = fabric_view_reduce;
false ->
Mod = fabric_view_map
end,
Mod:go(Db, Design, View, QueryArgs, Callback, Acc0).
get_view_group_info(DbName, DesignId) ->
fabric_group_info:go(dbname(DbName), design_doc(DesignId)).
design_docs(DbName) ->
QueryArgs = #view_query_args{start_key = <<"_design/">>, include_docs=true},
Callback = fun({total_and_offset, _, _}, []) ->
{ok, []};
({row, {Props}}, Acc) ->
case couch_util:get_value(id, Props) of
<<"_design/", _/binary>> ->
{ok, [couch_util:get_value(doc, Props) | Acc]};
_ ->
{stop, Acc}
end;
(complete, Acc) ->
{ok, lists:reverse(Acc)}
end,
fabric:all_docs(dbname(DbName), Callback, [], QueryArgs).
reset_validation_funs(DbName) ->
[rexi:cast(Node, {fabric_rpc, reset_validation_funs, [Name]}) ||
#shard{node=Node, name=Name} <- mem3:shards(DbName)].
%% some simple type validation and transcoding
dbname(DbName) when is_list(DbName) ->
list_to_binary(DbName);
dbname(DbName) when is_binary(DbName) ->
DbName;
dbname(#db{name=Name}) ->
Name;
dbname(DbName) ->
erlang:error({illegal_database_name, DbName}).
name(Thing) ->
couch_util:to_binary(Thing).
docid(DocId) when is_list(DocId) ->
list_to_binary(DocId);
docid(DocId) when is_binary(DocId) ->
DocId;
docid(DocId) ->
erlang:error({illegal_docid, DocId}).
docs(Docs) when is_list(Docs) ->
[doc(D) || D <- Docs];
docs(Docs) ->
erlang:error({illegal_docs_list, Docs}).
doc(#doc{} = Doc) ->
Doc;
doc({_} = Doc) ->
couch_doc:from_json_obj(Doc);
doc(Doc) ->
erlang:error({illegal_doc_format, Doc}).
design_doc(#doc{} = DDoc) ->
DDoc;
design_doc(DocId) when is_list(DocId) ->
design_doc(list_to_binary(DocId));
design_doc(<<"_design/", _/binary>> = DocId) ->
DocId;
design_doc(GroupName) ->
<<"_design/", GroupName/binary>>.
idrevs({Id, Revs}) when is_list(Revs) ->
{docid(Id), [rev(R) || R <- Revs]}.
rev(Rev) when is_list(Rev); is_binary(Rev) ->
couch_doc:parse_rev(Rev);
rev({Seq, Hash} = Rev) when is_integer(Seq), is_binary(Hash) ->
Rev.
opts(Options) ->
case couch_util:get_value(user_ctx, Options) of
undefined ->
case erlang:get(user_ctx) of
#user_ctx{} = Ctx ->
[{user_ctx, Ctx} | Options];
_ ->
Options
end;
_ ->
Options
end.
default_callback(complete, Acc) ->
{ok, lists:reverse(Acc)};
default_callback(Row, Acc) ->
{ok, [Row | Acc]}.
is_reduce_view(_, _, _, #view_query_args{view_type=Reduce}) ->
Reduce =:= reduce.
|
