| 1 |
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-module(mod_caps_rdbms). |
| 2 |
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-behaviour(mod_caps_backend). |
| 3 |
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| 4 |
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-export([init/2, |
| 5 |
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read/2, |
| 6 |
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write/3, |
| 7 |
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delete_node/2]). |
| 8 |
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| 9 |
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-spec init(mongooseim:host_type(), gen_mod:module_opts()) -> ok. |
| 10 |
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init(HostType, _Opts) -> |
| 11 |
:-( |
rdbms_queries:prepare_upsert(HostType, caps_upsert, caps, |
| 12 |
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[<<"node">>, <<"sub_node">>, <<"features">>], |
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[<<"features">>], |
| 14 |
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[<<"node">>, <<"sub_node">>]), |
| 15 |
:-( |
mongoose_rdbms:prepare(caps_delete, caps, |
| 16 |
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[node, sub_node], |
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<<"DELETE FROM caps WHERE node=? AND sub_node=?">>), |
| 18 |
:-( |
mongoose_rdbms:prepare(caps_select, caps, |
| 19 |
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[node, sub_node], |
| 20 |
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<<"SELECT features FROM caps WHERE node=? AND sub_node=?">>), |
| 21 |
:-( |
ok. |
| 22 |
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| 23 |
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-spec read(mongooseim:host_type(), mod_caps:node_pair()) -> |
| 24 |
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{ok, mod_caps:maybe_pending_features()} | error. |
| 25 |
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read(HostType, {Node, SubNode}) -> |
| 26 |
:-( |
case mongoose_rdbms:execute(HostType, caps_select, [Node, SubNode]) of |
| 27 |
:-( |
[{selected, [{Encoded}]}] -> {ok, jiffy:decode(Encoded)}; |
| 28 |
:-( |
_ -> error |
| 29 |
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end. |
| 30 |
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| 31 |
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-spec write(mongooseim:host_type(), mod_caps:node_pair(), |
| 32 |
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mod_caps:maybe_pending_features()) -> ok. |
| 33 |
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write(HostType, {Node, SubNode}, Features) -> |
| 34 |
:-( |
Encoded = jiffy:encode(Features), |
| 35 |
:-( |
InsertParams = [Node, SubNode, Encoded], |
| 36 |
:-( |
UpdateParams = [Encoded], |
| 37 |
:-( |
UniqueKeyValues = [Node, SubNode], |
| 38 |
:-( |
rdbms_queries:execute_upsert(HostType, caps_upsert, |
| 39 |
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InsertParams, UpdateParams, UniqueKeyValues), |
| 40 |
:-( |
ok. |
| 41 |
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|
| 42 |
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-spec delete_node(mongooseim:host_type(), mod_caps:node_pair()) -> ok. |
| 43 |
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delete_node(HostType, {Node, SubNode}) -> |
| 44 |
:-( |
{updated, _} = mongoose_rdbms:execute(HostType, caps_delete, [Node, SubNode]), |
| 45 |
:-( |
ok. |