Feature to gather SNMP Walk, use as Pseudo Device, and Browse Objects

* fix anomalous name

* add gather worker

* fix encoding of binary storage

* store results back to job

* now parsing mbis report to translate

* fix the broken report parser

* rename gather to snapshot

* implement walk code copied from SNMP::Info

* can now bulkwalk and parse mibs report and store resolved walk in cache

* add func/glob aliasing broken

* better aliasing

* implement aliasing from globals and funcs

* fix regexp for matching netdisco-mibs report

* fake cache entry for all ND2 methods called, add comments

* also save to logs/snapshots/IP

* add doc for netdisco-do

* add is_pseudo column to device table

* support for loading cache for pseudo devices

* check for hrSystemUptime as well as sysUpTime for snmp connect

* display pseudo devices with yellow pill for name

* color all cells for layers for pseudo

* no need to b64 encode binary data in scalars as we b64 whole thing after

* tweaked uptime check

* store snapshot to database instead of Job

* expose snapshots in device details tab

* small ux improvements on snap download

* fixes for errors in subnet mask searching

* hide snapshot management for pseudo devices

* update to use new netdisco-mibs object cache

* update for new format oids file

* start of work on loading walk into db for browsing

* store values and meta

* add auto increment col and oid index to browser

* start web plugin for browser

* add virtual search for oid children

* have all oid in separte table (60 seconds load on my laptop)

* rename table and add relation

* store oid as int array

* fix sql for children

* make jstree start working

* working very slow tree expand

* fix to work when first displaying tree

* store both oid and oid_parts

* simplify SQL to speed up (more complicated perl)

* fix sql bug, add better index, prettify tree

* render the snmp node detail

* add node template, make scrollable, pretty print data values (insecure)

* store munge hint

* some dubious code to munge the data

* make sure to filter by IP on device_browser

* make safer the rendering of value data (but need to come back to key ordering)

* fix sorting on object values

* limit the opening of child nodes to keep response good and unclutter

* factor out the munge and make safer

* reject unknown mungers

* show the munger and option (not working) to change

* additional js for munge select

* complete custom munge

* change so that saving to database is only at CLI and on request

* hide snmp tab if no browser rows in the db

* add helpful message when no browser rows for the device

* stub handler for search and add recurse control

* working search

* minor ui fixes

* implement typeahead for leaf search

* limit rows in typeahead

* make sure device_browser is visited in delete and renumber

* add requirements for this branch

* update manifest

* make sure node search and typeahead are restricted to current device only

lib/App/Netdisco/DB/Result/Virtual/FilteredSNMPObject.pm

@@ -0,0 +1,34 @@
+use utf8;
+package App::Netdisco::DB::Result::Virtual::FilteredSNMPObject;
+
+use strict;
+use warnings;
+
+use base 'DBIx::Class::Core';
+
+__PACKAGE__->table_class('DBIx::Class::ResultSource::View');
+
+__PACKAGE__->table("filtered_snmp_object");
+__PACKAGE__->result_source_instance->is_virtual(1);
+__PACKAGE__->result_source_instance->view_definition(<<ENDSQL
+
+    SELECT oid, oid_parts, mib, leaf, type, access, index
+      FROM snmp_object
+      WHERE oid LIKE ?::text || '.%'
+        AND oid_parts[?] = ANY (?)
+        AND array_length(oid_parts,1) = ?
+
+ENDSQL
+);
+
+__PACKAGE__->add_columns(
+  'oid'    => { data_type => 'text' },
+  'oid_parts' => { data_type => 'integer[]' },
+  'mib'    => { data_type => 'text' },
+  'leaf'   => { data_type => 'text' },
+  'type'   => { data_type => 'text' },
+  'access' => { data_type => 'text' },
+  'index'  => { data_type => 'text[]' },
+);
+
+1;

lib/App/Netdisco/DB/Result/Virtual/OidChildren.pm

@@ -0,0 +1,36 @@
+use utf8;
+package App::Netdisco::DB::Result::Virtual::OidChildren;
+
+use strict;
+use warnings;
+
+use base 'DBIx::Class::Core';
+
+__PACKAGE__->table_class('DBIx::Class::ResultSource::View');
+
+__PACKAGE__->table("oid_children");
+__PACKAGE__->result_source_instance->is_virtual(1);
+__PACKAGE__->result_source_instance->view_definition(<<ENDSQL
+
+    SELECT DISTINCT(db.oid_parts[?]) AS part, count(distinct(db2.oid_parts[?])) as children
+      FROM device_browser db
+
+      LEFT JOIN device_browser db2
+      ON (db2.oid LIKE ? || '.%'
+          AND db2.oid_parts[?] = db.oid_parts[?]
+          AND db2.ip = db.ip)
+
+      WHERE db.ip = ?
+            AND db.oid LIKE ? || '.%'
+
+      GROUP BY db.oid_parts
+
+ENDSQL
+);
+
+__PACKAGE__->add_columns(
+  'part'     => { data_type => 'integer' },
+  'children' => { data_type => 'integer' },
+);
+
+1;