From 8fa66377a1c97d42d83d91ef0821f37f1b885617 Mon Sep 17 00:00:00 2001
From: Simon Rettberg
Date: Tue, 6 Dec 2016 16:21:56 +0100
Subject: [statistics/locations/..] Cache calculated locationid of machine in
 machine table

We now have three columns for the locationid:
- subnetlocationid
  Updated whenever the clientip of a client changes on bootup, or when
  locations/subnets are edited in the locations module.
- fixedlocationid
  Takes the role of the old locationid field - set when a machine is
  placed in a room via roomplanner, set to NULL otherwise.
- locationid
  Set to fixedlocationid if it's not NULL, to subnetlocationid otherwise.
  The field is updated by a BEFORE UPDATE trigger.
---
 modules-available/statistics/install.inc.php | 47 +++++++++++++++++++++++++++-
 1 file changed, 46 insertions(+), 1 deletion(-)

(limited to 'modules-available/statistics/install.inc.php')

diff --git a/modules-available/statistics/install.inc.php b/modules-available/statistics/install.inc.php
index be07274c..0729d676 100644
--- a/modules-available/statistics/install.inc.php
+++ b/modules-available/statistics/install.inc.php
@@ -1,5 +1,8 @@
 <?php
 
+// locationid trigger
+$addTrigger = false;
+
 $res = array();
 
 // The main statistic table used for log entries
@@ -23,7 +26,9 @@ $res[] = tableCreate('statistic', "
 
 $res[] = tableCreate('machine', "
   `machineuuid` char(36) CHARACTER SET ascii NOT NULL,
-  `locationid` int(11) DEFAULT NULL,
+  `fixedlocationid` int(11) DEFAULT NULL           COMMENT 'Manually set location (e.g. roomplanner)',
+  `subnetlocationid` int(11) DEFAULT NULL          COMMENT 'Automatically determined location (e.g. from subnet match),
+  `locationid` int(11) DEFAULT NULL                COMMENT 'Will be automatically set to fixedlocationid if not null, subnetlocationid otherwise',
   `macaddr` char(17) CHARACTER SET ascii NOT NULL,
   `clientip` varchar(45) CHARACTER SET ascii NOT NULL,
   `firstseen` int(10) unsigned NOT NULL,
@@ -66,6 +71,10 @@ $res[] = tableCreate('pciid', "
 	PRIMARY KEY (`category`,`id`)
 ");
 
+if (in_array(UPDATE_DONE, $res)) {
+	$addTrigger = true;
+}
+
 //
 // This was added/changed later -- keep update path
 //
@@ -112,6 +121,42 @@ if ($ret === false) {
 	finalResponse(UPDATE_FAILED, 'Expanding position column failed: ' . Database::lastError());
 }
 
+// 2016-12-06:
+// Add subnetlocationid - contains automatically determined location (by subnet)
+if (!tableHasColumn('machine', 'subnetlocationid')) {
+	$ret = Database::exec('ALTER TABLE machine'
+		. ' ADD COLUMN `subnetlocationid` int(11) DEFAULT NULL AFTER `machineuuid`');
+	if ($ret === false) {
+		finalResponse(UPDATE_FAILED, 'Adding subnetlocationid to machine failed: ' . Database::lastError());
+	}
+	$res[] = UPDATE_DONE;
+	$addTrigger = true;
+}
+// And fixedlocationid - manually set location, currently used by roomplanner
+if (!tableHasColumn('machine', 'fixedlocationid')) {
+	$ret = Database::exec('ALTER TABLE machine'
+		. ' ADD COLUMN `fixedlocationid` int(11) DEFAULT NULL AFTER `machineuuid`');
+	if ($ret === false) {
+		finalResponse(UPDATE_FAILED, 'Adding fixedlocationid to machine failed: ' . Database::lastError());
+	}
+	// Now copy over the values from locationid, since this was used before
+	Database::exec("UPDATE machine SET fixedlocationid = locationid");
+	$res[] = UPDATE_DONE;
+	$addTrigger = true;
+}
+// If any of these was added, create the trigger
+if ($addTrigger) {
+	$ret = Database::exec(" 
+	CREATE TRIGGER set_automatic_locationid
+		BEFORE UPDATE ON machine FOR EACH ROW
+	BEGIN
+		SET NEW.locationid = If(NEW.fixedlocationid IS NULL, NEW.subnetlocationid, NEW.fixedlocationid);
+	END");
+	if ($ret === false) {
+		finalResponse(UPDATE_FAILED, 'Adding locationid trigger to machine failed: ' . Database::lastError());
+	}
+}
+
 // Create response
 
 if (in_array(UPDATE_DONE, $res)) {
-- 
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