./ct_report/coverage/mongoose_iq.COVER.html

1 %% @doc Functions to work with iq record.
2 %%
3 %%==============================================================================
4 %% Copyright 2015 Erlang Solutions Ltd.
5 %%
6 %% Licensed under the Apache License, Version 2.0 (the "License");
7 %% you may not use this file except in compliance with the License.
8 %% You may obtain a copy of the License at
9 %%
10 %% http://www.apache.org/licenses/LICENSE-2.0
11 %%
12 %% Unless required by applicable law or agreed to in writing, software
13 %% distributed under the License is distributed on an "AS IS" BASIS,
14 %% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 %% See the License for the specific language governing permissions and
16 %% limitations under the License.
17 %%==============================================================================
18 %%
19 -module(mongoose_iq).
20 -export([iq_to_sub_el/1,
21 empty_result_iq/1]).
22 -export([update_acc_info/1]).
23 -export([info/1, xmlns/1, command/1]).
24
25 -ignore_xref([command/1, empty_result_iq/1, iq_to_sub_el/1, update_acc_info/1]).
26 -ignore_xref([xmlns/1]).
27
28 -include("jlib.hrl").
29
30 %% ---------------------------------------------------------
31 %% API
32 %% ---------------------------------------------------------
33
34 iq_to_sub_el(#iq{sub_el = SubEl}) ->
35 2 SubEl.
36
37 empty_result_iq(IQ) ->
38 2 IQ#iq{type = result, sub_el = []}.
39
40 %% Fills mongoose_acc with useful IQ information
41 %% If the info cache is already present, then it is updated only if
42 %% IQ data ref() doesn't match stanza ref() inside acc.
43 -spec update_acc_info(mongoose_acc:t()) -> mongoose_acc:t().
44 update_acc_info(Acc0) ->
45 33130 IQRef = mongoose_acc:get(iq, ref, not_exists, Acc0),
46 33130 case mongoose_acc:stanza_ref(Acc0) of
47 IQRef ->
48 % Up to date
49 2139 Acc0;
50 CurrentRef ->
51 30991 El = mongoose_acc:element(Acc0),
52 30991 IQ = jlib:iq_query_or_response_info(El),
53 30991 {XMLNS, Command} = case IQ of
54 #iq{ xmlns = XMLNS0, sub_el = SubEl } ->
55 30979 {XMLNS0, sub_el_to_command(SubEl)};
56 _ ->
57 12 {undefined, undefined}
58 end,
59 30991 IqData = [{record, IQ}, {xmlns, XMLNS}, {command, Command}, {ref, CurrentRef}],
60 30991 mongoose_acc:set(iq, IqData, Acc0)
61 end.
62
63 %% update_and_get updates only when it is actually necessary
64 %% and adds IQ data if it's missing
65
66 -spec info(mongoose_acc:t()) -> {invalid | not_iq | jlib:iq(), UpdatedAcc :: mongoose_acc:t()}.
67 7075 info(Acc) -> update_and_get(record, Acc).
68
69 -spec xmlns(mongoose_acc:t()) -> {binary() | undefined, UpdatedAcc :: mongoose_acc:t()}.
70 
:-(
 xmlns(Acc) -> update_and_get(xmlns, Acc).
71
72 -spec command(mongoose_acc:t()) -> {binary() | undefined, UpdatedAcc :: mongoose_acc:t()}.
73 
:-(
 command(Acc) -> update_and_get(command, Acc).
74
75 %% ---------------------------------------------------------
76 %% Internal functions
77 %% ---------------------------------------------------------
78
79 -spec sub_el_to_command([exml:element()] | exml:element()) -> binary() | undefined.
80 1578 sub_el_to_command([]) -> undefined;
81 11602 sub_el_to_command([SubEl | _]) -> SubEl#xmlel.name;
82 17799 sub_el_to_command(#xmlel{ name = Name }) -> Name.
83
84 -type iq_acc_field() :: record | xmlns | command.
85
86 -spec update_and_get(iq_acc_field(), mongoose_acc:t()) ->
87 {FieldValue :: any(), mongoose_acc:t()}.
88 update_and_get(Field, Acc0) ->
89 7075 Acc1 = update_acc_info(Acc0),
90 7075 {mongoose_acc:get(iq, Field, Acc1), Acc1}.
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