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Diffstat (limited to 'lib/snmp/src/agent/snmpa_mib_storage.erl')
| -rw-r--r-- | lib/snmp/src/agent/snmpa_mib_storage.erl | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/lib/snmp/src/agent/snmpa_mib_storage.erl b/lib/snmp/src/agent/snmpa_mib_storage.erl new file mode 100644 index 0000000000..5c3f76d89b --- /dev/null +++ b/lib/snmp/src/agent/snmpa_mib_storage.erl @@ -0,0 +1,181 @@ +%% +%% %CopyrightBegin% +%% +%% Copyright Ericsson AB 2013-2013. All Rights Reserved. +%% +%% The contents of this file are subject to the Erlang Public License, +%% Version 1.1, (the "License"); you may not use this file except in +%% compliance with the License. You should have received a copy of the +%% Erlang Public License along with this software. If not, it can be +%% retrieved online at http://www.erlang.org/. +%% +%% Software distributed under the License is distributed on an "AS IS" +%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See +%% the License for the specific language governing rights and limitations +%% under the License. +%% +%% %CopyrightEnd% +%% + +-module(snmpa_mib_storage). + +-export_type([ + mib_storage_fields/0, + mib_storage_table_type/0, + mib_storage_table_id/0 + ]). + + +%%% ---------------------------------------------------------------- +%%% This behaviour module defines the API for the mib-storage. +%%% This is how the agent stores its internal mib-data +%%% (symbolic-store and mib-server). +%%%----------------------------------------------------------------- + +-type mib_storage_fields() :: [atom()]. +-type mib_storage_table_type() :: set | bag. +-type mib_storage_table_id() :: term(). + + +%% --------------------------------------------------------------- +%% open +%% +%% Open or create a mib-storage table. +%% If any extra info needs to be communicated to the implementor +%% (of the behaviour), this is done using the *Options* argument. +%% --------------------------------------------------------------- + +%% Options is callback module dependant + +-callback open(Name :: atom(), + RecName :: atom(), + Fields :: mib_storage_fields(), + Type :: mib_storage_table_type(), + Options :: list()) -> + {ok, TabId :: mib_storage_table_id()} | {error, Reason :: term()}. + + +%% --------------------------------------------------------------- +%% close +%% +%% Close the mib-storage table. What this does is up to the +%% implementor (when using mnesia it may be a no-op but for ets +%% it may actually delete the table). +%% --------------------------------------------------------------- + +-callback close(TabId :: mib_storage_table_id()) -> + term(). + + +%% --------------------------------------------------------------- +%% read/2 +%% +%% Retrieve a record from the mib-storage table. +%% --------------------------------------------------------------- + +-callback read(TabId :: mib_storage_table_id(), + Key :: term()) -> + false | {value, Record :: tuple()}. + + +%% --------------------------------------------------------------- +%% write/2 +%% +%% Write a record to the mib-storage table. +%% --------------------------------------------------------------- + +-callback write(TabId :: mib_storage_table_id(), + Record :: tuple()) -> + ok | {error, Reason :: term()}. + + +%% --------------------------------------------------------------- +%% delete/1 +%% +%% Delete the mib-storage table. +%% --------------------------------------------------------------- + +-callback delete(TabId :: mib_storage_table_id()) -> + snmp:void(). + + +%% --------------------------------------------------------------- +%% delete/2 +%% +%% Delete a record from the mib-storage table. +%% --------------------------------------------------------------- + +-callback delete(TabId :: mib_storage_table_id(), + Key :: term()) -> + ok | {error, Reason :: term()}. + + +%% --------------------------------------------------------------- +%% match_object +%% +%% Search the mib-storage table for records which matches +%% the pattern. +%% --------------------------------------------------------------- + +-callback match_object(TabId :: mib_storage_table_id(), + Pattern :: ets:match_pattern()) -> + {ok, Recs :: [tuple()]} | {error, Reason :: term()}. + + +%% --------------------------------------------------------------- +%% match_delete +%% +%% Search the mib-storage table for records which matches the +%% pattern and deletes them from the database and return the +%5 deleted records. +%% --------------------------------------------------------------- + +-callback match_delete(TabId :: mib_storage_table_id(), + Pattern :: ets:match_pattern()) -> + {ok, Recs :: [tuple()]} | {error, Reason :: term()}. + + +%% --------------------------------------------------------------- +%% tab2list +%% +%% Return all records in the table in the form of a list. +%% --------------------------------------------------------------- + +-callback tab2list(TabId :: mib_storage_table_id()) -> + [tuple()]. + + +%% --------------------------------------------------------------- +%% info/1,2 +%% +%% Retrieve implementation dependent mib-storage table +%% information. +%% --------------------------------------------------------------- + +-callback info(TabId :: mib_storage_table_id()) -> + Info :: term(). + +-callback info(TabId :: mib_storage_table_id(), Item :: atom()) -> + Info :: term(). + + +%% --------------------------------------------------------------- +%% sync +%% +%% Dump mib-storage table to disc (if it has a disk component). +%% --------------------------------------------------------------- + +-callback sync(TabId :: mib_storage_table_id()) -> + snmp:void(). + + +%% --------------------------------------------------------------- +%% backup +%% +%% Make a backup copy of the mib-storage table. +%% --------------------------------------------------------------- + +-callback backup(TabId :: mib_storage_table_id(), + Dir :: file:filename()) -> + ok | {error, Reason :: term()}. + |