From 8f929fad475601ee3cb164a26db3a9065fa7f909 Mon Sep 17 00:00:00 2001
From: Micael Karlberg <bmk@erlang.org>
Date: Sun, 28 Apr 2013 20:23:44 +0200
Subject: [snmp/agent] Preliminary doc update regarding mib_data behaviour
---
lib/snmp/doc/src/files.mk | 1 +
lib/snmp/doc/src/notes.xml | 129 -----------------------
lib/snmp/doc/src/snmp_config.xml | 18 +++-
lib/snmp/doc/src/snmpa_mib_data.xml | 201 ++++++++++++++++++++++++++++++++++++
4 files changed, 218 insertions(+), 131 deletions(-)
create mode 100644 lib/snmp/doc/src/snmpa_mib_data.xml
diff --git a/lib/snmp/doc/src/files.mk b/lib/snmp/doc/src/files.mk
index 61c91c9729..e215143b03 100644
--- a/lib/snmp/doc/src/files.mk
+++ b/lib/snmp/doc/src/files.mk
@@ -41,6 +41,7 @@ XML_AGENT_REF3_FILES = \
snmpa_error_io.xml \
snmpa_error_logger.xml \
snmpa_local_db.xml \
+ snmpa_mib_data.xml \
snmpa_mpd.xml \
snmpa_network_interface.xml \
snmpa_network_interface_filter.xml \
diff --git a/lib/snmp/doc/src/notes.xml b/lib/snmp/doc/src/notes.xml
index 5222922848..b47d4237f5 100644
--- a/lib/snmp/doc/src/notes.xml
+++ b/lib/snmp/doc/src/notes.xml
@@ -1017,135 +1017,6 @@
</section> <!-- 4.20 -->
- <section>
- <title>SNMP Development Toolkit 4.19</title>
- <p>Version 4.19 supports code replacement in runtime from/to
- version 4.18.</p>
-
- <section>
- <title>Improvements and new features</title>
-<!--
- <p>-</p>
--->
- <list type="bulleted">
- <item>
- <p>[compiler] Added support for textual convention
- <c>AGENT-CAPABILITIES</c> and "full" support for textual
- convention MODULE-COMPLIANCE, both defined by the SNMPv2-CONF
- mib.</p>
- <p>The <c>reference</c> and <c>modules</c> part(s) are
- stored in the <c>assocList</c> of the mib-entry (<c>me</c>)
- record.
- Only handled <em>if</em> the option(s) <c>agent_capabilities</c>
- and <c>module_compliance</c> (respectively) are provided to the
- compiler. </p>
- <p>See <seealso marker="snmpc#compile">compile/2</seealso>
- for more info. </p>
- <p>For backward compatibillity, the MIBs provided with
- this application are <em>not</em> compiled with these
- options. </p>
- <p>Own Id: OTP-8966</p>
- </item>
-
- <item>
- <p>[agent] Added a "complete" set of (snmp) table and variable
- print functions, for each mib handled by the SNMP (agent)
- application. This will be usefull when debugging a running agent.</p>
- <p>See
- <seealso marker="snmpa#print_mib_info">print_mib_info/0</seealso>,
- <seealso marker="snmpa#print_mib_tables">print_mib_tables/0</seealso>
- and
- <seealso marker="snmpa#print_mib_variables">print_mib_variables/0</seealso>
- for more info. </p>
- <p>Own Id: OTP-8977</p>
- </item>
-
- <item>
- <p>[compiler] Added a MIB compiler (frontend) escript,
- <c>snmpc</c>. </p>
- <p>Own Id: OTP-9004</p>
- </item>
-
- </list>
- </section>
-
- <section>
- <title>Fixed Bugs and Malfunctions</title>
-<!--
- <p>-</p>
--->
- <list type="bulleted">
- <item>
- <p>[agent] For the table vacmAccessTable,
- when performing the is_set_ok and set operation(s),
- all values of the vacmAccessSecurityModel column was
- incorrectly translated to <c>any</c>. </p>
-<!--
-that is when calling:
-snmp_view_basec_acm_mib:vacmAccessTable(set, RowIndex, Cols).
--->
- <p>Own Id: OTP-8980</p>
- </item>
-
- <item>
- <p>[agent] When calling
- <seealso marker="snmp_view_based_acm_mib#reconfigure">snmp_view_based_acm_mib:reconfigure/1</seealso>
- on a running node, the table <c>vacmAccessTable</c> was not properly
- cleaned.
- This meant that if some entries in the vacm.conf file was removed
- (compared to the <c>current</c> config),
- while others where modified and/or added, the removed entrie(s)
- would still exist in the <c>vacmAccessTable</c> table. </p>
- <p>Own Id: OTP-8981</p>
- <p>Aux Id: Seq 11750</p>
- </item>
-
- </list>
- </section>
-
-
- <section>
- <title>Incompatibilities</title>
- <p>-</p>
- </section>
-
- </section> <!-- 4.19 -->
-
-
- <section>
- <title>SNMP Development Toolkit 4.18</title>
- <p>Version 4.18 supports code replacement in runtime from/to
- version 4.17.1 and 4.17.</p>
-
- <section>
- <title>Improvements and new features</title>
- <list type="bulleted">
- <item>
- <p>Prepared for R14B release.</p>
- </item>
- </list>
- </section>
-
- <section><title>Fixed Bugs and Malfunctions</title>
- <p>-</p>
-<!--
- <list type="bulleted">
- <item>
- <p>[agent] When the function FilterMod:accept_recv/2 returned false
- the SNMP agent stopped collecting messages from UDP.</p>
- <p>Own Id: OTP-8761</p>
- </item>
- </list>
--->
- </section>
-
- <section>
- <title>Incompatibilities</title>
- <p>-</p>
- </section>
- </section> <!-- 4.18 -->
-
-
<!-- section>
<title>Release notes history</title>
<p>For information about older versions see
diff --git a/lib/snmp/doc/src/snmp_config.xml b/lib/snmp/doc/src/snmp_config.xml
index eec53162a1..42831ecb34 100644
--- a/lib/snmp/doc/src/snmp_config.xml
+++ b/lib/snmp/doc/src/snmp_config.xml
@@ -4,7 +4,7 @@
<chapter>
<header>
<copyright>
- <year>1997</year><year>2012</year>
+ <year>1997</year><year>2013</year>
<holder>Ericsson AB. All Rights Reserved.</holder>
</copyright>
<legalnotice>
@@ -337,7 +337,7 @@
<marker id="agent_mib_server"></marker>
<tag><c><![CDATA[mib_server() = [mib_server_opt()] <optional>]]></c></tag>
<item>
- <p><c>mib_server_opt() = {mibentry_override, mibentry_override()} | {trapentry_override, trapentry_override()} | {verbosity, verbosity()} | {cache, mibs_cache()}</c></p>
+ <p><c>mib_server_opt() = {mibentry_override, mibentry_override()} | {trapentry_override, trapentry_override()} | {verbosity, verbosity()} | {cache, mibs_cache()} | {mob_data_mod, mib_data_mod()}</c></p>
<p>Defines options specific for the SNMP agent mib server. </p>
<p>For defaults see the options in <c>mib_server_opt()</c>.</p>
</item>
@@ -370,6 +370,20 @@
default values apply).</p>
</item>
+ <marker id="agent_ms_mib_data_mod"></marker>
+ <tag><c><![CDATA[mib_data_mod() = snmpa_mib_data_tttn | snmpa_mib_data_ttln | module() <optional>]]></c></tag>
+ <item>
+ <p>Defines the backend mib_data storage module of the
+ SNMP agent mib-server as defined by the
+ <seealso marker="snmpa_mib_data">snmpa_mib_data</seealso>
+ behaviour. </p>
+ <p>Two modules is provided with the agent
+ <c>snmpa_mib_data_tttn</c> (this is the old implementation) and
+ <c>snmpa_mib_data_ttln</c> (for a mib tree with many holes,
+ this algorithm can be more price efficient).
+ <p>Default module is <c>snmpa_mib_data_tttn</c>. </p>
+ </item>
+
<marker id="agent_ms_cache_opts"></marker>
<tag><c><![CDATA[mibs_cache_opts() = [mibs_cache_opt()] <optional>]]></c></tag>
<item>
diff --git a/lib/snmp/doc/src/snmpa_mib_data.xml b/lib/snmp/doc/src/snmpa_mib_data.xml
new file mode 100644
index 0000000000..462112ac71
--- /dev/null
+++ b/lib/snmp/doc/src/snmpa_mib_data.xml
@@ -0,0 +1,201 @@
+<?xml version="1.0" encoding="iso-8859-1" ?>
+<!DOCTYPE erlref SYSTEM "erlref.dtd">
+
+<erlref>
+ <header>
+ <copyright>
+ <year>2013</year><year>2013</year>
+ <holder>Ericsson AB. All Rights Reserved.</holder>
+ </copyright>
+ <legalnotice>
+ 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.
+
+ </legalnotice>
+
+ <title>snmpa_mib_data</title>
+ <prepared></prepared>
+ <responsible></responsible>
+ <docno></docno>
+ <approved></approved>
+ <checked></checked>
+ <date></date>
+ <rev></rev>
+ <file>snmpa_mib_data.xml</file>
+ </header>
+
+ <module>snmpa_mib_data</module>
+ <modulesummary>Behaviour module for the SNMP agent mib-server
+ data module.</modulesummary>
+ <description>
+ <p>This module defines the behaviour of the SNMP agent mib-server
+ data module. A <c>snmpa_mib_data</c> compliant module
+ must export the following functions: </p>
+ <list type="bulleted">
+ <item>
+ <p>new/1</p>
+ </item>
+ <item>
+ <p>close/1</p>
+ </item>
+ <item>
+ <p>sync/1</p>
+ </item>
+ <item>
+ <p>load_mib/4</p>
+ </item>
+ <item>
+ <p>unload_mib/4</p>
+ </item>
+ <item>
+ <p>lookup/2</p>
+ </item>
+ <item>
+ <p>next/3</p>
+ </item>
+ <item>
+ <p>register_subagent/3</p>
+ </item>
+ <item>
+ <p>unregister_subagent/2</p>
+ </item>
+ <item>
+ <p>which_mib/2</p>
+ </item>
+ <item>
+ <p>which_mibs/1</p>
+ </item>
+ <item>
+ <p>whereis_mib/2</p>
+ </item>
+ <item>
+ <p>backup/2</p>
+ </item>
+ <item>
+ <p>dump/2</p>
+ </item>
+ <item>
+ <p>info/1,2</p>
+ </item>
+ <item>
+ <p>code_change/2</p>
+ </item>
+ </list>
+ <p>The semantics of them and their exact signatures are explained
+ below. </p>
+
+ <marker id="handle_error"></marker>
+ </description>
+ <funcs>
+ <func>
+ <name>new(Storage) -> State</name>
+ <fsummary>Create new (mib-storage) instance</fsummary>
+ <type>
+ <v>Storage = mib_storage()</v>
+ <v>State = term()</v>
+ </type>
+ <desc>
+ <p>Create a new mib-storage instance. </p>
+
+ <marker id="close"></marker>
+ </desc>
+ </func>
+
+ <func>
+ <name>close(State) -> void()</name>
+ <fsummary>Close the mib-storage</fsummary>
+ <type>
+ <v>State = term()</v>
+ </type>
+ <desc>
+ <p>Close the mib-storage.</p>
+
+ <marker id="sync"></marker>
+ </desc>
+ </func>
+
+ <func>
+ <name>sync(State) -> void()</name>
+ <fsummary>Synchronize to disc</fsummary>
+ <type>
+ <v>State = term()</v>
+ </type>
+ <desc>
+ <p>Synchronize (write to disc, if possible) the data to disc.
+ This depends on the <c>mib_storage</c> option, and will only have
+ an effect if the mib-storage option has an actual disc component
+ (such as dets, or ets with a file). </p>
+
+ <marker id="load_mib"></marker>
+ </desc>
+ </func>
+
+ <func>
+ <name>load_mib(State, Filename, MeOverride, TeOverride) -> {ok, NewState} | {error, Reason}</name>
+ <fsummary>Load a mib into the mib-server</fsummary>
+ <type>
+ <v>State = NewState = term()</v>
+ <v>Filename = filename()</v>
+ <v>MeOverride = boolean()</v>
+ <v>TeOverride = boolean()</v>
+ <v>Reason = already_loaded | term()</v>
+ </type>
+ <desc>
+ <p>Load the mib specified by the <c>Filename</c> argument
+ into the mib-server.
+ The <c>MeOverride</c> and <c>TeOverride</c> arguments
+ specifies how the mib-server shall handle duplicate mib- and trap-
+ entries. </p>
+
+ <marker id="unload_mib"></marker>
+ </desc>
+ </func>
+
+ <func>
+ <name>unload_mib(State, Filename) -> {ok, NewState} | {error, Reason}</name>
+ <fsummary>Unload mib from the mib-server</fsummary>
+ <type>
+ <v>State = NewState = term()</v>
+ <v>Filename = filename()</v>
+ <v>Reason = not_loaded | term()</v>
+ </type>
+ <desc>
+ <p>Unload the mib specified by the <c>Filename</c> argument
+ from the mib-server. </p>
+
+ <marker id="lookup"></marker>
+ </desc>
+ </func>
+
+ <func>
+ <name>lookup(State, Oid) -> Reply</name>
+ <fsummary>Find the mib-entry corresponding to the Oid</fsummary>
+ <type>
+ <v>State = term()</v>
+ <v>Reply = {variable, ME} | {table_column, ME, TEOid} | {subagent, SAPid, SAOid} | [false, Reason}</v>
+ <v>Oid = TEOid = SAOid = oid()</v>
+ <v>SAPid = pid()</v>
+ <v>ME = me()</v>
+ <v>Reason = term()</v>
+ </type>
+ <desc>
+ <p>Find the mib-entry corresponding to the Oid.
+ If it is a variable, the Oid must be
+ <Oid for var>.0
+ and if it is a table, Oid must be
+ <table>.<entry>.<col>.<any>.</p>
+ <!-- FIX -->
+ </desc>
+ </func>
+ </funcs>
+
+</erlref>
+
--
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