Device Components.

The purpose of this feature is to provide a framework for discovery modules to store
information in the database, without needing to add new tables for each feature.

This Feature provides:
- A database structure to store data.
- An API to store and retrieve data from the database.
- Integration to the LibreNMS APIv0.
- Ability to disable/ignore components.
- Default alerting rules.

- The API returns $COMPONENT[$device_id][$component_id] to allow pulling of data for multiple devices.
  The intent is to be able to create 'Applications' the consolidate data from applications covering multiple devices.
- Added some developer documentation

html/includes/table/component.inc.php

@@ -0,0 +1,59 @@
+<?php
+
+$row = 1;
+
+$device_id = $_POST['device_id'];
+
+require_once "../includes/component.php";
+$OBJCOMP = new component();
+
+// Add a filter if supplied
+if (isset($searchPhrase) && !empty($searchPhrase)) {
+    $options['filter']['label'] = array('LIKE', $searchPhrase);
+}
+
+// Add a Sort option
+if (!isset($sort) || empty($sort)) {
+    // Nothing supplied, default is id ASC.
+    $options['sort'] = 'id asc';
+}
+else {
+    $options['sort'] = $sort;
+}
+
+// Define the Limit parameters
+if (isset($current)) {
+    $start  = (($current * $rowCount) - ($rowCount));
+}
+if ($rowCount != -1) {
+    $options['limit'] = array($start,$rowCount);
+}
+
+$COMPONENTS = $OBJCOMP->getComponents($device_id,$options);
+
+$response[] = array(
+    'id' => '<button type="submit" id="save-form" class="btn btn-success btn-sm" title="Save current component disable/ignore settings">Save</button><button type="submit" id="form-reset" class="btn btn-danger btn-sm" title="Reset form to when the page was loaded">Reset</button>',
+    'label' => '&nbsp;',
+    'status' => '<button type="submit" id="alert-select" class="btn btn-default btn-sm" title="Disable alerting on all currently-alerting components">Alerting</button>',
+    'disable' => '<button type="submit" id="disable-toggle" class="btn btn-default btn-sm" title="Toggle polling for all components">Toggle</button><button type="button" id="disable-select" class="btn btn-default btn-sm" title="Disable polling on all components">Select All</button>',
+    'ignore' => '<button type="submit" id="ignore-toggle" class="btn btn-default btn-sm" title="Toggle alerting for all components">Toggle</button><button type="button" id="ignore-select" class="btn btn-default btn-sm" title="Disable alerting on all components">Select All</button>',
+);
+
+foreach ($COMPONENTS[$device_id] as $ID => $AVP) {
+    $response[] = array(
+        'id' => $ID,
+        'type' => $AVP['type'],
+        'label' => $AVP['label'],
+        'status' => ($AVP['status'] ? "<span name='status_".$ID."' class='green'>Normal</span>" : "<span name='status_".$ID."' class='red'>Alert</span>"),
+        'disable' => '<input type="checkbox" class="disable-check" name="dis_'.$ID.'"'.($AVP['disabled'] ? 'checked' : '').'>',
+        'ignore' => '<input type="checkbox" class="ignore-check" name="ign_'.$ID.'"'.($AVP['ignore'] ? 'checked' : '').'>',
+    );
+}//end foreach
+
+$output = array(
+    'current'  => $current,
+    'rowCount' => $rowCount,
+    'rows'     => $response,
+    'total'    => count($COMPONENTS[$device_id]),
+);
+echo _json_encode($output);