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%%%----------------------------------------------------------------------
%%% File : pubsub_db_sql.erl
%%% Author : Pablo Polvorin <pablo.polvorin@process-one.net>
%%% Purpose : Provide helpers for PubSub ODBC backend
%%% Created : 7 Aug 2009 by Pablo Polvorin <pablo.polvorin@process-one.net>
%%%
%%%
%%% ejabberd, Copyright (C) 2002-2022 ProcessOne
%%%
%%% This program is free software; you can redistribute it and/or
%%% modify it under the terms of the GNU General Public License as
%%% published by the Free Software Foundation; either version 2 of the
%%% License, or (at your option) any later version.
%%%
%%% This program is distributed in the hope that it will be useful,
%%% but WITHOUT ANY WARRANTY; without even the implied warranty of
%%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
%%% General Public License for more details.
%%%
%%% You should have received a copy of the GNU General Public License along
%%% with this program; if not, write to the Free Software Foundation, Inc.,
%%% 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
%%%
%%%----------------------------------------------------------------------
-module(pubsub_db_sql).
-author("pablo.polvorin@process-one.net").
-include("pubsub.hrl").
-include("ejabberd_sql_pt.hrl").
-export([add_subscription/1, read_subscription/1,
delete_subscription/1, update_subscription/1]).
-export([export/1]).
-spec read_subscription(SubID :: mod_pubsub:subId()) -> {ok, #pubsub_subscription{}} | notfound.
read_subscription(SubID) ->
case
ejabberd_sql:sql_query_t(
?SQL("select @(opt_name)s, @(opt_value)s from pubsub_subscription_opt where subid = %(SubID)s"))
of
{selected, []} ->
notfound;
{selected, Options} ->
{ok,
#pubsub_subscription{subid = SubID,
options = lists:map(fun subscription_opt_from_sql/1, Options)}}
end.
-spec delete_subscription(SubID :: mod_pubsub:subId()) -> ok.
delete_subscription(SubID) ->
ejabberd_sql:sql_query_t(
?SQL("delete from pubsub_subscription_opt "
"where subid = %(SubID)s")),
ok.
-spec update_subscription(#pubsub_subscription{}) -> ok .
update_subscription(#pubsub_subscription{subid = SubId} = Sub) ->
delete_subscription(SubId), add_subscription(Sub).
-spec add_subscription(#pubsub_subscription{}) -> ok.
add_subscription(#pubsub_subscription{subid = SubId, options = Opts}) ->
lists:foreach(
fun(Opt) ->
{OdbcOptName, OdbcOptValue} = subscription_opt_to_sql(Opt),
ejabberd_sql:sql_query_t(
?SQL("insert into pubsub_subscription_opt(subid, "
"opt_name, opt_value) values "
"(%(SubId)s, %(OdbcOptName)s, %(OdbcOptValue)s)"))
end,
Opts),
ok.
subscription_opt_from_sql({<<"DELIVER">>, Value}) ->
{deliver, sql_to_boolean(Value)};
subscription_opt_from_sql({<<"DIGEST">>, Value}) ->
{digest, sql_to_boolean(Value)};
subscription_opt_from_sql({<<"DIGEST_FREQUENCY">>, Value}) ->
{digest_frequency, sql_to_integer(Value)};
subscription_opt_from_sql({<<"EXPIRE">>, Value}) ->
{expire, sql_to_timestamp(Value)};
subscription_opt_from_sql({<<"INCLUDE_BODY">>, Value}) ->
{include_body, sql_to_boolean(Value)};
%%TODO: might be > than 1 show_values value??.
%% need to use compact all in only 1 opt.
subscription_opt_from_sql({<<"SHOW_VALUES">>, Value}) ->
{show_values, Value};
subscription_opt_from_sql({<<"SUBSCRIPTION_TYPE">>, Value}) ->
{subscription_type,
case Value of
<<"items">> -> items;
<<"nodes">> -> nodes
end};
subscription_opt_from_sql({<<"SUBSCRIPTION_DEPTH">>, Value}) ->
{subscription_depth,
case Value of
<<"all">> -> all;
N -> sql_to_integer(N)
end}.
subscription_opt_to_sql({deliver, Bool}) ->
{<<"DELIVER">>, boolean_to_sql(Bool)};
subscription_opt_to_sql({digest, Bool}) ->
{<<"DIGEST">>, boolean_to_sql(Bool)};
subscription_opt_to_sql({digest_frequency, Int}) ->
{<<"DIGEST_FREQUENCY">>, integer_to_sql(Int)};
subscription_opt_to_sql({expire, Timestamp}) ->
{<<"EXPIRE">>, timestamp_to_sql(Timestamp)};
subscription_opt_to_sql({include_body, Bool}) ->
{<<"INCLUDE_BODY">>, boolean_to_sql(Bool)};
subscription_opt_to_sql({show_values, Values}) ->
{<<"SHOW_VALUES">>, Values};
subscription_opt_to_sql({subscription_type, Type}) ->
{<<"SUBSCRIPTION_TYPE">>,
case Type of
items -> <<"items">>;
nodes -> <<"nodes">>
end};
subscription_opt_to_sql({subscription_depth, Depth}) ->
{<<"SUBSCRIPTION_DEPTH">>,
case Depth of
all -> <<"all">>;
N -> integer_to_sql(N)
end}.
integer_to_sql(N) -> integer_to_binary(N).
boolean_to_sql(true) -> <<"1">>;
boolean_to_sql(false) -> <<"0">>.
timestamp_to_sql(T) -> xmpp_util:encode_timestamp(T).
sql_to_integer(N) -> binary_to_integer(N).
sql_to_boolean(B) -> B == <<"1">>.
sql_to_timestamp(T) -> xmpp_util:decode_timestamp(T).
export(_Server) ->
[{pubsub_node,
fun(_Host, #pubsub_node{nodeid = {Host, Node}, id = Nidx,
parents = Parents, type = Type,
options = Options}) ->
H = node_flat_sql:encode_host(Host),
Parent = case Parents of
[] -> <<>>;
[First | _] -> First
end,
[?SQL("delete from pubsub_node where nodeid=%(Nidx)d;"),
?SQL("delete from pubsub_node_option where nodeid=%(Nidx)d;"),
?SQL("delete from pubsub_node_owner where nodeid=%(Nidx)d;"),
?SQL("delete from pubsub_state where nodeid=%(Nidx)d;"),
?SQL("delete from pubsub_item where nodeid=%(Nidx)d;"),
?SQL("insert into pubsub_node(host,node,nodeid,parent,plugin)"
" values (%(H)s, %(Node)s, %(Nidx)d, %(Parent)s, %(Type)s);")]
++ lists:map(
fun ({Key, Value}) ->
SKey = iolist_to_binary(atom_to_list(Key)),
SValue = misc:term_to_expr(Value),
?SQL("insert into pubsub_node_option(nodeid,name,val)"
" values (%(Nidx)d, %(SKey)s, %(SValue)s);")
end, Options);
(_Host, _R) ->
[]
end},
{pubsub_state,
fun(_Host, #pubsub_state{stateid = {JID, Nidx},
affiliation = Affiliation,
subscriptions = Subscriptions}) ->
J = jid:encode(JID),
S = node_flat_sql:encode_subscriptions(Subscriptions),
A = node_flat_sql:encode_affiliation(Affiliation),
[?SQL("insert into pubsub_state(nodeid,jid,affiliation,subscriptions)"
" values (%(Nidx)d, %(J)s, %(A)s, %(S)s);")];
(_Host, _R) ->
[]
end},
{pubsub_item,
fun(_Host, #pubsub_item{itemid = {ItemId, Nidx},
creation = {C, _},
modification = {M, JID},
payload = Payload}) ->
P = jid:encode(JID),
XML = str:join([fxml:element_to_binary(X) || X<-Payload], <<>>),
SM = encode_now(M),
SC = encode_now(C),
[?SQL("insert into pubsub_item(itemid,nodeid,creation,modification,publisher,payload)"
" values (%(ItemId)s, %(Nidx)d, %(SC)s, %(SM)s, %(P)s, %(XML)s);")];
(_Host, _R) ->
[]
end}].
encode_now({T1, T2, T3}) ->
<<(misc:i2l(T1, 6))/binary, ":",
(misc:i2l(T2, 6))/binary, ":",
(misc:i2l(T3, 6))/binary>>.
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