| 1 |
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-module(mam_decoder). |
| 2 |
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-export([decode_row/2]). |
| 3 |
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-export([decode_muc_row/2]). |
| 4 |
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-export([decode_muc_gdpr_row/2]). |
| 5 |
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-export([decode_retraction_info/3]). |
| 6 |
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| 7 |
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-type ext_mess_id() :: non_neg_integer() | binary(). |
| 8 |
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-type env_vars() :: mod_mam_rdbms_arch:env_vars(). |
| 9 |
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-type db_row() :: {ext_mess_id(), ExtSrcJID :: binary(), ExtData :: binary()}. |
| 10 |
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-type db_muc_row() :: {ext_mess_id(), Nick :: binary(), ExtData :: binary()}. |
| 11 |
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-type db_muc_gdpr_row() :: {ext_mess_id(), ExtData :: binary()}. |
| 12 |
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-type decoded_muc_gdpr_row() :: {ext_mess_id(), exml:element()}. |
| 13 |
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| 14 |
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-spec decode_row(db_row(), env_vars()) -> mod_mam:message_row(). |
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decode_row({ExtMessID, ExtSrcJID, ExtData}, Env) -> |
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MessID = mongoose_rdbms:result_to_integer(ExtMessID), |
| 17 |
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SrcJID = decode_jid(ExtSrcJID, Env), |
| 18 |
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Packet = decode_packet(ExtData, Env), |
| 19 |
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#{id => MessID, jid => SrcJID, packet => Packet}. |
| 20 |
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| 21 |
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-spec decode_muc_row(db_muc_row(), env_vars()) -> mod_mam:message_row(). |
| 22 |
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decode_muc_row({ExtMessID, Nick, ExtData}, Env = #{archive_jid := RoomJID}) -> |
| 23 |
1801 |
MessID = mongoose_rdbms:result_to_integer(ExtMessID), |
| 24 |
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SrcJID = jid:replace_resource(RoomJID, Nick), |
| 25 |
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Packet = decode_packet(ExtData, Env), |
| 26 |
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#{id => MessID, jid => SrcJID, packet => Packet}. |
| 27 |
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| 28 |
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-spec decode_muc_gdpr_row(db_muc_gdpr_row(), env_vars()) -> decoded_muc_gdpr_row(). |
| 29 |
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decode_muc_gdpr_row({ExtMessID, ExtData}, Env) -> |
| 30 |
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Packet = decode_packet(ExtData, Env), |
| 31 |
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{ExtMessID, Packet}. |
| 32 |
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| 33 |
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-spec decode_retraction_info(env_vars(), |
| 34 |
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[{binary(), mod_mam:message_id(), binary()}], |
| 35 |
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mod_mam_utils:retraction_id()) -> |
| 36 |
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skip | mod_mam_utils:retraction_info(). |
| 37 |
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decode_retraction_info(_Env, [], _) -> skip; |
| 38 |
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decode_retraction_info(Env, [{ResMessID, Data}], {origin_id, OriginID}) -> |
| 39 |
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Packet = decode_packet(Data, Env), |
| 40 |
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MessID = mongoose_rdbms:result_to_integer(ResMessID), |
| 41 |
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#{retract_on => origin_id, packet => Packet, message_id => MessID, origin_id => OriginID}; |
| 42 |
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decode_retraction_info(Env, [{OriginID, Data}], {stanza_id, StanzaID}) -> |
| 43 |
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Packet = decode_packet(Data, Env), |
| 44 |
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MessID = mod_mam_utils:external_binary_to_mess_id(StanzaID), |
| 45 |
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#{retract_on => stanza_id, packet => Packet, message_id => MessID, origin_id => OriginID}. |
| 46 |
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| 47 |
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-spec decode_jid(binary(), env_vars()) -> jid:jid(). |
| 48 |
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decode_jid(ExtJID, #{db_jid_codec := Codec, archive_jid := ArcJID}) -> |
| 49 |
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mam_jid:decode(Codec, ArcJID, ExtJID). |
| 50 |
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| 51 |
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-spec decode_packet(binary(), env_vars()) -> exml:element(). |
| 52 |
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decode_packet(ExtBin, Env = #{db_message_codec := Codec}) -> |
| 53 |
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Bin = unescape_binary(ExtBin, Env), |
| 54 |
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mam_message:decode(Codec, Bin). |
| 55 |
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| 56 |
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-spec unescape_binary(binary(), env_vars()) -> binary(). |
| 57 |
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unescape_binary(Bin, #{host_type := HostType}) -> |
| 58 |
5061 |
mongoose_rdbms:unescape_binary(HostType, Bin). |