| 1 |
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-module(mam_encoder). |
| 2 |
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-export([encode_message/3]). |
| 3 |
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-export([encode_jid/2]). |
| 4 |
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-export([encode_direction/1]). |
| 5 |
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-export([encode_packet/2]). |
| 6 |
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-export([extend_lookup_params/2]). |
| 7 |
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| 8 |
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-include("jlib.hrl"). |
| 9 |
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-include("mongoose_mam.hrl"). |
| 10 |
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| 11 |
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-type value_type() :: int | maybe_string | direction | bare_jid | jid | jid_resource | xml | search. |
| 12 |
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-type env_vars() :: mod_mam_rdbms_arch:env_vars(). |
| 13 |
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-type db_mapping() :: #db_mapping{}. |
| 14 |
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-type encoded_field_value() :: term(). |
| 15 |
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| 16 |
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-spec extend_lookup_params(mam_iq:lookup_params(), env_vars()) -> mam_iq:lookup_params(). |
| 17 |
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extend_lookup_params(#{start_ts := Start, end_ts := End, with_jid := WithJID, |
| 18 |
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borders := Borders, search_text := SearchText} = Params, Env) -> |
| 19 |
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Params#{norm_search_text => mod_mam_utils:normalize_search_text(SearchText), |
| 20 |
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start_id => make_start_id(Start, Borders), |
| 21 |
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end_id => make_end_id(End, Borders), |
| 22 |
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remote_bare_jid => maybe_encode_bare_jid(WithJID, Env), |
| 23 |
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remote_resource => jid_to_non_empty_resource(WithJID)}. |
| 24 |
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| 25 |
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-spec encode_message(mod_mam:archive_message_params(), env_vars(), list(db_mapping())) -> |
| 26 |
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[encoded_field_value()]. |
| 27 |
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encode_message(Params, Env, Mappings) -> |
| 28 |
10487 |
[encode_value_using_mapping(Params, Env, Mapping) || Mapping <- Mappings]. |
| 29 |
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| 30 |
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encode_value_using_mapping(Params, Env, #db_mapping{param = Param, format = Format}) -> |
| 31 |
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Value = maps:get(Param, Params), |
| 32 |
97262 |
encode_value(Format, Value, Env). |
| 33 |
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| 34 |
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-spec encode_value(value_type(), term(), env_vars()) -> encoded_field_value(). |
| 35 |
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encode_value(int, Value, _Env) when is_integer(Value) -> |
| 36 |
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Value; |
| 37 |
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encode_value(maybe_string, none, _Env) -> |
| 38 |
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null; |
| 39 |
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encode_value(maybe_string, Value, _Env) when is_binary(Value) -> |
| 40 |
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Value; |
| 41 |
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encode_value(direction, Value, _Env) -> |
| 42 |
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encode_direction(Value); |
| 43 |
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encode_value(bare_jid, Value, Env) -> |
| 44 |
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encode_jid(jid:to_bare(Value), Env); |
| 45 |
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encode_value(jid, Value, Env) -> |
| 46 |
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encode_jid(Value, Env); |
| 47 |
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encode_value(jid_resource, #jid{lresource = Res}, _Env) -> |
| 48 |
10487 |
Res; |
| 49 |
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encode_value(xml, Value, Env) -> |
| 50 |
10487 |
encode_packet(Value, Env); |
| 51 |
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encode_value(search, Value, Env) -> |
| 52 |
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encode_search_body(Value, Env); |
| 53 |
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encode_value(bool, Value, _Env) -> |
| 54 |
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encode_boolean(Value). |
| 55 |
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| 56 |
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encode_direction(incoming) -> <<"I">>; |
| 57 |
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encode_direction(outgoing) -> <<"O">>. |
| 58 |
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| 59 |
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make_start_id(Start, Borders) -> |
| 60 |
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StartID = maybe_encode_compact_uuid(Start, 0), |
| 61 |
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mod_mam_utils:apply_start_border(Borders, StartID). |
| 62 |
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| 63 |
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make_end_id(End, Borders) -> |
| 64 |
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EndID = maybe_encode_compact_uuid(End, 255), |
| 65 |
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mod_mam_utils:apply_end_border(Borders, EndID). |
| 66 |
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| 67 |
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maybe_encode_compact_uuid(undefined, _) -> |
| 68 |
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undefined; |
| 69 |
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maybe_encode_compact_uuid(Microseconds, NodeID) -> |
| 70 |
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mod_mam_utils:encode_compact_uuid(Microseconds, NodeID). |
| 71 |
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| 72 |
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jid_to_non_empty_resource(undefined) -> undefined; |
| 73 |
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jid_to_non_empty_resource(#jid{lresource = <<>>}) -> undefined; |
| 74 |
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jid_to_non_empty_resource(#jid{lresource = Res}) -> Res. |
| 75 |
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| 76 |
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-spec encode_jid(jid:jid(), env_vars()) -> binary(). |
| 77 |
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encode_jid(JID, #{db_jid_codec := Codec, archive_jid := ArcJID}) -> |
| 78 |
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mam_jid:encode(Codec, ArcJID, JID). |
| 79 |
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| 80 |
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maybe_encode_bare_jid(undefined, _Env) -> undefined; |
| 81 |
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maybe_encode_bare_jid(JID, Env) -> encode_jid(jid:to_bare(JID), Env). |
| 82 |
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| 83 |
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-spec encode_packet(exml:element(), env_vars()) -> binary(). |
| 84 |
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encode_packet(Packet, #{db_message_codec := Codec}) -> |
| 85 |
10529 |
mam_message:encode(Codec, Packet). |
| 86 |
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| 87 |
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-spec encode_search_body(exml:element(), env_vars()) -> binary(). |
| 88 |
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encode_search_body(Packet, #{has_full_text_search := SearchEnabled}) -> |
| 89 |
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mod_mam_utils:packet_to_search_body(SearchEnabled, Packet). |
| 90 |
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| 91 |
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encode_boolean(true) -> 1; |
| 92 |
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encode_boolean(false) -> 0. |