From b5d1e1e5a25b2ad1c90702dcc6db3ca5860f1421 Mon Sep 17 00:00:00 2001
From: Isaac Connor <isaac@zoneminder.com>
Date: Fri, 19 Jan 2018 13:03:47 -0500
Subject: [PATCH] update triggers to use coalesce

---
 db/zm_update-1.31.26.sql | 95 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 95 insertions(+)
 create mode 100644 db/zm_update-1.31.26.sql

diff --git a/db/zm_update-1.31.26.sql b/db/zm_update-1.31.26.sql
new file mode 100644
index 000000000..158ee30a7
--- /dev/null
+++ b/db/zm_update-1.31.26.sql
@@ -0,0 +1,95 @@
+delimiter //
+DROP TRIGGER IF EXISTS event_update_trigger;
+
+CREATE TRIGGER event_update_trigger AFTER UPDATE ON Events
+FOR EACH ROW
+BEGIN
+    declare diff BIGINT default 0;
+
+    set diff = NEW.DiskSpace - OLD.DiskSpace;
+  IF ( NEW.StorageId = OLD.StorageID ) THEN
+    IF ( diff ) THEN
+      call update_storage_stats(OLD.StorageId, diff);
+    END IF;
+  ELSE
+    IF ( NEW.DiskSpace ) THEN
+      call update_storage_stats(NEW.StorageId, NEW.DiskSpace);
+    END IF;
+    IF ( OLD.DiskSpace ) THEN
+      call update_storage_stats(OLD.StorageId, -OLD.DiskSpace);
+    END IF;
+  END IF;
+
+  UPDATE Events_Hour SET DiskSpace=NEW.DiskSpace WHERE EventId=NEW.Id;
+  UPDATE Events_Day SET DiskSpace=NEW.DiskSpace WHERE EventId=NEW.Id;
+  UPDATE Events_Week SET DiskSpace=NEW.DiskSpace WHERE EventId=NEW.Id;
+  UPDATE Events_Month SET DiskSpace=NEW.DiskSpace WHERE EventId=NEW.Id;
+  IF ( NEW.Archived != OLD.Archived ) THEN
+    IF ( NEW.Archived ) THEN
+      INSERT INTO Events_Archived (EventId,MonitorId,DiskSpace) VALUES (NEW.Id,NEW.MonitorId,NEW.DiskSpace);
+      UPDATE Monitors SET ArchivedEvents = COALESCE(ArchivedEvents,0)+1, ArchivedEventDiskSpace = COALESCE(ArchivedEventDiskSpace,0) + COALESCE(NEW.DiskSpace,0) WHERE Id=NEW.MonitorId;
+    ELSEIF ( OLD.Archived ) THEN
+      DELETE FROM Events_Archived WHERE EventId=OLD.Id;
+      UPDATE Monitors SET ArchivedEvents = COALESCE(ArchivedEvents,0)-1, ArchivedEventDiskSpace = COALESCE(ArchivedEventDiskSpace,0) - COALESCE(OLD.DiskSpace,0) WHERE Id=OLD.MonitorId;
+    ELSE
+      IF ( OLD.DiskSpace != NEW.DiskSpace ) THEN
+        UPDATE Events_Archived SET DiskSpace=NEW.DiskSpace WHERE EventId=NEW.Id;
+        UPDATE Monitors SET
+          ArchivedEventDiskSpace = COALESCE(ArchivedEventDiskSpace,0) - COALESCE(OLD.DiskSpace,0) + COALESCE(NEW.DiskSpace,0)
+          WHERE Id=OLD.MonitorId;
+      END IF;
+    END IF;
+  END IF;
+
+  IF ( OLD.DiskSpace != NEW.DiskSpace ) THEN
+    UPDATE Monitors SET TotalEventDiskSpace = COALESCE(TotalEventDiskSpace,0) - COALESCE(OLD.DiskSpace,0) + COALESCE(NEW.DiskSpace,0) WHERE Id=OLD.MonitorId;
+  END IF;
+
+END;
+
+//
+
+DROP TRIGGER IF EXISTS event_insert_trigger;
+
+create trigger event_insert_trigger after insert on Events
+for each row
+  begin
+
+  INSERT INTO Events_Hour (EventId,MonitorId,StartTime,DiskSpace) VALUES (NEW.Id,NEW.MonitorId,NEW.StartTime,0);
+  INSERT INTO Events_Day (EventId,MonitorId,StartTime,DiskSpace) VALUES (NEW.Id,NEW.MonitorId,NEW.StartTime,0);
+  INSERT INTO Events_Week (EventId,MonitorId,StartTime,DiskSpace) VALUES (NEW.Id,NEW.MonitorId,NEW.StartTime,0);
+  INSERT INTO Events_Month (EventId,MonitorId,StartTime,DiskSpace) VALUES (NEW.Id,NEW.MonitorId,NEW.StartTime,0);
+  UPDATE Monitors SET TotalEvents = COALESCE(TotalEvents,0)+1 WHERE Id=NEW.MonitorId;
+end;
+//
+
+UPDATE Monitors INNER JOIN (
+  SELECT  MonitorId,
+    COUNT(Id) AS TotalEvents,
+    SUM(DiskSpace) AS TotalEventDiskSpace,
+    SUM(IF(Archived,1,0)) AS ArchivedEvents,
+    SUM(IF(Archived,DiskSpace,0)) AS ArchivedEventDiskSpace,
+    SUM(IF(StartTime > DATE_SUB(NOW(), INTERVAL 1 hour),1,0)) AS HourEvents,
+    SUM(IF(StartTime > DATE_SUB(NOW(), INTERVAL 1 hour),DiskSpace,0)) AS HourEventDiskSpace,
+    SUM(IF(StartTime > DATE_SUB(NOW(), INTERVAL 1 day),1,0)) AS DayEvents,
+    SUM(IF(StartTime > DATE_SUB(NOW(), INTERVAL 1 day),DiskSpace,0)) AS DayEventDiskSpace,
+    SUM(IF(StartTime > DATE_SUB(NOW(), INTERVAL 1 week),1,0)) AS WeekEvents,
+    SUM(IF(StartTime > DATE_SUB(NOW(), INTERVAL 1 week),DiskSpace,0)) AS WeekEventDiskSpace,
+    SUM(IF(StartTime > DATE_SUB(NOW(), INTERVAL 1 month),1,0)) AS MonthEvents,
+    SUM(IF(StartTime > DATE_SUB(NOW(), INTERVAL 1 month),DiskSpace,0)) AS MonthEventDiskSpace
+    FROM Events GROUP BY MonitorId
+    ) AS E ON E.MonitorId=Monitors.Id SET
+    Monitors.TotalEvents = E.TotalEvents,
+    Monitors.TotalEventDiskSpace = E.TotalEventDiskSpace,
+    Monitors.ArchivedEvents = E.ArchivedEvents,
+    Monitors.ArchivedEventDiskSpace = E.ArchivedEventDiskSpace,
+    Monitors.HourEvents = E.HourEvents,
+    Monitors.HourEventDiskSpace = E.HourEventDiskSpace,
+    Monitors.DayEvents = E.DayEvents,
+    Monitors.DayEventDiskSpace = E.DayEventDiskSpace,
+    Monitors.WeekEvents = E.WeekEvents,
+    Monitors.WeekEventDiskSpace = E.WeekEventDiskSpace,
+    Monitors.MonthEvents = E.MonthEvents,
+    Monitors.MonthEventDiskSpace = E.MonthEventDiskSpace//
+
+