diff options
Diffstat (limited to 'share/scripts/periodic_backup.lua')
-rw-r--r-- | share/scripts/periodic_backup.lua | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/share/scripts/periodic_backup.lua b/share/scripts/periodic_backup.lua new file mode 100644 index 0000000000..ff274a7a08 --- /dev/null +++ b/share/scripts/periodic_backup.lua @@ -0,0 +1,47 @@ +ardour { + ["type"] = "EditorHook", + name = "Periodically Save Snapshot", + author = "Ardour Lua Task Force", + description = "Save a session-snapshot peridocally (every 15mins) named after the current date-time", +} + +-- subscribe to signals +-- http://manual.ardour.org/lua-scripting/class_reference/#LuaSignal.LuaSignal +function signals () + return LuaSignal.Set():add ({[LuaSignal.LuaTimerS] = true}) +end + +-- create callback function +function factory () + local _last_snapshot_time = 0 -- persistent variable + local _snapshot_interval = 60 * 15 -- 15 minutes + + -- callback function which invoked when signal is emitted, every 100ms + return function (signal, ref, ...) + + local now = os.time (); -- unix-time, seconds since 1970 + + -- skip initial save when script is loaded + if (_last_snapshot_time == 0) then + _last_snapshot_time = now; + end + + -- every 15 mins + if (now > _last_snapshot_time + _snapshot_interval) then + + -- don't save while recording, may interfere with recording + if Session:actively_recording() then + -- queue 30 sec after rec-stop + _last_snapshot_time = now - _snapshot_interval + 30 + return + end + + _last_snapshot_time = now + -- format date-time (avoid colon) + local snapshot_name = os.date ("%Y-%m-%d %H.%M.%S", now) + -- save session -- http://manual.ardour.org/lua-scripting/class_reference/#ARDOUR:Session + Session:save_state ("backup " .. snapshot_name, false, false, false) + end + + end +end |