mirror of
https://github.com/libguestfs/libguestfs.git
synced 2026-03-22 07:03:38 +00:00
f77ddb9e11
- add support for events (with test) - test progress messages - update documentation to describe events - refactor handle closing code - refactor error code - use 'assert' in test code instead of 'if ... then error end'
50 lines
1.6 KiB
Lua
Executable File
50 lines
1.6 KiB
Lua
Executable File
#!/usr/bin/lua
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-- libguestfs Lua bindings -*- lua -*-
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-- Copyright (C) 2012 Red Hat Inc.
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--
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-- This program is free software; you can redistribute it and/or modify
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-- it under the terms of the GNU General Public License as published by
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-- the Free Software Foundation; either version 2 of the License, or
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-- (at your option) any later version.
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--
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-- This program is distributed in the hope that it will be useful,
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-- but WITHOUT ANY WARRANTY; without even the implied warranty of
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-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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-- GNU General Public License for more details.
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--
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-- You should have received a copy of the GNU General Public License
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-- along with this program; if not, write to the Free Software
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-- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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require "guestfs"
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g = Guestfs.create ()
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function log_callback (g, event, eh, flags, buf, array)
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io.write (string.format ("lua event logged: event=%s eh=%d buf='%s'\n",
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event, eh, buf))
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end
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close_invoked = 0
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function close_callback (g, event, eh, flags, buf, array)
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close_invoked = close_invoked+1
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log_callback (g, event, eh, flags, buf, array)
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end
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-- Register an event callback for all log messages.
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g:set_event_callback (log_callback, { "appliance", "library", "trace" })
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-- Register an event callback for the close event.
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g:set_event_callback (close_callback, "close")
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-- Make sure we see some messages.
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g:set_trace (true)
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g:set_verbose (true)
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-- Do some stuff.
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g:add_drive_ro ("/dev/null")
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-- Close the handle. The close callback should be invoked.
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g:close ()
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assert (close_invoked == 1, "close callback was not invoked")
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