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Diffstat (limited to 'src/pubsub_db_sql.erl')
| -rw-r--r-- | src/pubsub_db_sql.erl | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/src/pubsub_db_sql.erl b/src/pubsub_db_sql.erl new file mode 100644 index 00000000..b910a5e7 --- /dev/null +++ b/src/pubsub_db_sql.erl @@ -0,0 +1,141 @@ +%%%---------------------------------------------------------------------- +%%% 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) 2002-2016 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"). + +-export([add_subscription/1, read_subscription/1, + delete_subscription/1, update_subscription/1]). + +%% TODO: Those -spec lines produce errors in old Erlang versions. +%% They can be enabled again in ejabberd 3.0 because it uses R12B or higher. +%% -spec read_subscription(SubID :: string()) -> {ok, #pubsub_subscription{}} | notfound. +read_subscription(SubID) -> + case + ejabberd_sql:sql_query_t([<<"select opt_name, opt_value from pubsub_subscr" + "iption_opt where subid = '">>, + ejabberd_sql:escape(SubID), <<"'">>]) + of + {selected, [<<"opt_name">>, <<"opt_value">>], []} -> + notfound; + {selected, [<<"opt_name">>, <<"opt_value">>], Options} -> + {ok, + #pubsub_subscription{subid = SubID, + options = lists:map(fun subscription_opt_from_sql/1, Options)}} + end. + +%% -spec delete_subscription(SubID :: string()) -> ok. +delete_subscription(SubID) -> + %% -spec update_subscription(#pubsub_subscription{}) -> ok . + %% -spec add_subscription(#pubsub_subscription{}) -> ok. + %% -------------- Internal utilities ----------------------- + ejabberd_sql:sql_query_t([<<"delete from pubsub_subscription_opt " + "where subid = '">>, + ejabberd_sql:escape(SubID), <<"'">>]), + ok. + +update_subscription(#pubsub_subscription{subid = SubId} = Sub) -> + delete_subscription(SubId), add_subscription(Sub). + +add_subscription(#pubsub_subscription{subid = SubId, options = Opts}) -> + EscapedSubId = ejabberd_sql:escape(SubId), + lists:foreach(fun (Opt) -> + {OdbcOptName, OdbcOptValue} = subscription_opt_to_sql(Opt), + ejabberd_sql:sql_query_t([<<"insert into pubsub_subscription_opt(subid, " + "opt_name, opt_value)values ('">>, + EscapedSubId, <<"','">>, + OdbcOptName, <<"','">>, + OdbcOptValue, <<"')">>]) + 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) -> iolist_to_binary(integer_to_list(N)). + +boolean_to_sql(true) -> <<"1">>; +boolean_to_sql(false) -> <<"0">>. + +timestamp_to_sql(T) -> jlib:now_to_utc_string(T). + +sql_to_integer(N) -> jlib:binary_to_integer(N). + +sql_to_boolean(B) -> B == <<"1">>. + +sql_to_timestamp(T) -> jlib:datetime_string_to_timestamp(T). |