mirror of
https://github.com/uroni/urbackup_backend.git
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112 lines
3.6 KiB
Lua
112 lines
3.6 KiB
Lua
--find largest (maximum of incr and full interval) interval for file and image backups
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local file_interval = tonumber(params.incr_file_interval)
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local full_file_interval = tonumber(params.full_file_interval)
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if full_file_interval>0 and full_file_interval<file_interval
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then
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file_interval = full_file_interval
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end
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local image_interval = tonumber(params.incr_image_interval)
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local full_image_interval = tonumber(params.full_image_interval)
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if full_image_interval>0 and full_image_interval<image_interval
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then
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image_interval = full_image_interval
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end
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--ret=0 image and file backup ok
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--ret=1 image ok, file backup not ok
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--ret=2 image not ok, file backup ok
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--ret=3 image and file backup not ok
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local ret = 0
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--Time in milliseconds to wait till this script is run next
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local next_check_ms = 30*60*1000
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function pretty_time_append(seconds, name, amount, result)
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if seconds>amount
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then
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local t = math.floor(seconds/amount)
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if result~=""
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then
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result = result .. " "
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end
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result = result .. t .. name
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seconds = seconds - t
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end
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return seconds, result
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end
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--Function to pretty print a duration in seconds
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function pretty_time(seconds)
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result = ""
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seconds, result = pretty_time_append(seconds, " month", 30*60*60*24, result)
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seconds, result = pretty_time_append(seconds, " days", 60*60*24, result)
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seconds, result = pretty_time_append(seconds, "h", 60*60, result)
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seconds, result = pretty_time_append(seconds, "min", 60, result)
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return result
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end
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--Sends a alert mail if mail address was specified as parameter
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function fail_mail(image, passed_time, alert_time)
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if params.alert_emails == ""
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then
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return
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end
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local btype = "file"
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if image
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then
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btype="image"
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if params.no_images=="1"
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then
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return
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end
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elseif params.no_file_backups=="1"
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then
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return
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end
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local subj = "[UrBackup] " .. params.clientname .. ": No recent " .. btype .. " backup"
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local msg = "No recent " .. btype .. " backup for client \"" .. params.clientname .. "\". Last " .. btype .." backup was " .. pretty_time(passed_time) .. " ago. This alert is sent if there is no recent backup in the last " .. pretty_time(alert_time) .. "."
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mail(params.alert_emails, subj, msg)
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end
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--Time in seconds till file backup status is not ok
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local file_backup_nok = file_interval*tonumber(params.alert_file_mult) - tonumber(params.passed_time_lastbackup_file)
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if file_backup_nok<0 and file_interval>0
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then
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ret=ret + 1
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--Send warning mail only once on status becoming not ok
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if params.file_ok=="1"
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then
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fail_mail(false, tonumber(params.passed_time_lastbackup_file), file_interval*tonumber(params.alert_file_mult) )
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end
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else
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next_check_ms = math.min(next_check_ms, file_backup_nok*1000)
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end
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--Time in seconds till image backup status is not ok
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local image_backup_nok = image_interval*tonumber(params.alert_image_mult) - tonumber(params.passed_time_lastbackup_image)
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if image_backup_nok<0 and image_interval>0
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then
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ret= ret + 2
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if params.image_ok=="1"
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then
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fail_mail(true, tonumber(params.passed_time_lastbackup_image), file_interval*tonumber(params.alert_image_mult) )
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end
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else
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next_check_ms = math.min(next_check_ms, image_backup_nok*1000)
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end
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--Second parameter returns the number of milliseconds to wait till the next status check
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--If the interval is complex (not a single number, but different numbers depending on window) we cannot return this time reliably
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--The alert script is automatically run after a backup so no need to return the wait time if both image and file backup status is not ok
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if params.complex_interval=="1" or ret==3
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then
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return ret
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else
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return ret, next_check_ms
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end
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