mirror of https://github.com/octoleo/lsyncd.git
code beautifications
This commit is contained in:
Axel Kittenberger
parent
698c5c3e4d
commit
899077ccd7
520
lsyncd.lua
520
lsyncd.lua
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@ -5,6 +5,8 @@
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-- It works closely together with the Lsyncd core in lsyncd.c. This means it
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-- cannot be runned directly from the standard lua interpreter.
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--
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-- This code assumes your editor is at least 100 chars wide.
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--
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-- License: GPLv2 (see COPYING) or any later version
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-- Authors: Axel Kittenberger <axkibe@gmail.com>
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--
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@ -18,10 +20,16 @@
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-- The core will exit if version ids mismatch.
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--
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if lsyncd_version then
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-- checks if the runner is being loaded twice
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lsyncd.log('Error', 'You cannot use the lsyncd runner as configuration file!')
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lsyncd.terminate(-1) -- ERRNO
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-- ensures the runner is not being loaded twice
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lsyncd.log(
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'Error',
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'You cannot use the lsyncd runner as configuration file!'
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)
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lsyncd.terminate( -1 )
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end
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lsyncd_version = '2.0.7'
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--
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@ -1352,7 +1360,7 @@ local Excludes = ( function( )
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err
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)
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terminate(-1) -- ERRNO
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terminate( -1 )
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end
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for line in f:lines() do
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@ -1521,7 +1529,7 @@ local Sync = ( function( )
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if rc == 'die' then
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log( 'Error', 'Critical exitcode.' );
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terminate( -1 ) --ERRNO
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terminate( -1 )
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end
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if rc ~= 'again' then
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@ -1562,7 +1570,7 @@ local Sync = ( function( )
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if rc == 'die' then
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log( 'Error', 'Critical exitcode.' );
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terminate( -1 ) --ERRNO
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terminate( -1 )
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end
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if rc == 'again' then
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@ -2188,7 +2196,7 @@ local Syncs = ( function( )
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info.short_src,':',
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info.currentline,': source missing from sync.'
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)
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terminate( -1 ) -- ERRNO
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terminate( -1 )
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end
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-- absolute path of source
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@ -2200,7 +2208,7 @@ local Syncs = ( function( )
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'Cannot access source directory: ',
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config.source
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)
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terminate( -1 ) -- ERRNO
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terminate( -1 )
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end
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config._source = config.source
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@ -2222,7 +2230,7 @@ local Syncs = ( function( )
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': no actions specified, use e.g. "config = default.rsync".'
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)
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terminate( -1 ) -- ERRNO
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terminate( -1 )
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end
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-- loads a default value for an option if not existent
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@ -2265,7 +2273,7 @@ local Syncs = ( function( )
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'" unknown.'
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)
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terminate( -1 ) -- ERRNO
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terminate( -1 )
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end
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--- creates the new sync
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@ -3257,7 +3265,7 @@ function runner.callError( message )
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local info = debug.getinfo( level, 'Sl' )
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if not info then
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terminate( -1 ) -- ERRNO
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terminate( -1 )
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end
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log(
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@ -3403,7 +3411,7 @@ SEE:
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-- -monitor NAME Uses operating systems event montior NAME
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-- (inotify/fanotify/fsevents)
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os.exit(-1) -- ERRNO
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os.exit( -1 )
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end
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@ -3427,12 +3435,15 @@ function runner.configure( args, monitors )
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-- a list of all valid options
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--
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-- first paramter is the number of parameters an option takes
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-- if < 0 the function checks existance -- TODO what?
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-- if < 0 the called function has to check the presence of
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-- optional arguments.
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--
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-- second paramter is the function to call
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--
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local options = {
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-- log is handled by core already.
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delay =
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{
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1,
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@ -3455,7 +3466,7 @@ function runner.configure( args, monitors )
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nil
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},
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logfile =
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logfile =
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{
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1,
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function( file )
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@ -3468,14 +3479,16 @@ function runner.configure( args, monitors )
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-1,
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function( monitor )
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if not monitor then
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io.stdout:write('This Lsyncd supports these monitors:\n')
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io.stdout:write( 'This Lsyncd supports these monitors:\n' )
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for _, v in ipairs(Monitors.list) do
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io.stdout:write(' ',v,'\n')
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end
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io.stdout:write('\n');
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lsyncd.terminate(-1); -- ERRNO
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io.stdout:write('\n')
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lsyncd.terminate(-1)
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else
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clSettings.monitor=monitor
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clSettings.monitor = monitor
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end
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end
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},
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@ -3488,7 +3501,7 @@ function runner.configure( args, monitors )
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end
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},
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pidfile =
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pidfile =
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{
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1,
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function( file )
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@ -3532,7 +3545,7 @@ function runner.configure( args, monitors )
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end
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},
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version =
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version =
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{
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0,
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function( )
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@ -3543,12 +3556,13 @@ function runner.configure( args, monitors )
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}
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-- non-opts is filled with all args that were no part dash options
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local nonopts = { }
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local i =
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1
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local i = 1
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while i <= #args do
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local a = args[i]
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local a = args[ i ]
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if a:sub( 1, 1 ) ~= '-' then
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table.insert( nonopts, args[ i ] )
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@ -3562,57 +3576,82 @@ function runner.configure( args, monitors )
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local o = options[ a ]
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if not o then
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log('Error','unknown option command line option ', args[i])
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os.exit(-1) -- ERRNO
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log(
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'Error',
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'unknown option command line option ',
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args[i]
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)
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os.exit( -1 )
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end
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if o[1] >= 0 and i + o[1] > #args then
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log('Error',a,' needs ',o[1],' arguments')
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os.exit(-1) -- ERRNO
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if o[ 1 ] >= 0 and i + o[ 1 ] > #args then
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log( 'Error', a ,' needs ', o[ 1 ],' arguments' )
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os.exit( -1 )
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elseif o[1] < 0 then
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o[1] = -o[1]
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o[ 1 ] = -o[ 1 ]
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end
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if o[2] then
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if o[1] == 0 then
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o[2]()
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elseif o[1] == 1 then
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o[2](args[i + 1])
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elseif o[1] == 2 then
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o[2](args[i + 1], args[i + 2])
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elseif o[1] == 3 then
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o[2](args[i + 1], args[i + 2], args[i + 3])
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if o[ 2 ] then
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if o[ 1 ] == 0 then
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o[ 2 ]( )
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elseif o[ 1 ] == 1 then
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o[ 2 ]( args[i + 1] )
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elseif o[ 1 ] == 2 then
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o[ 2 ]( args[i + 1], args[i + 2] )
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elseif o[ 1 ] == 3 then
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o[ 2 ]( args[i + 1], args[i + 2], args[i + 3] )
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end
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end
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i = i + o[1]
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end
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i = i + 1
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end
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if clSettings.syncs then
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if #nonopts ~= 0 then
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log('Error', 'There cannot be command line default syncs with a config file.')
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os.exit(-1) -- ERRNO
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log(
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'Error',
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'There cannot be command line syncs and config file together.'
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)
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os.exit( -1 )
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end
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else
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if #nonopts == 0 then
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runner.help(args[0])
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runner.help( args[ 0 ] )
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elseif #nonopts == 1 then
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return nonopts[1]
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return nonopts[ 1 ]
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else
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log('Error', 'There can only be one config file in command line.')
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os.exit(-1) -- ERRNO
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-- TODO make this possible
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log(
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'Error',
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'There can only be one config file in command line.'
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)
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os.exit( -1 )
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end
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end
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end
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----
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--
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-- Called from core on init or restart after user configuration.
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--
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-- @firstTime true the first time Lsyncd startup, false on resets
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-- due to HUP signal or monitor queue OVERFLOW.
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-- firstTime:
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-- true when Lsyncd startups the first time,
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-- false on resets, due to HUP signal or monitor queue overflow.
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--
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function runner.initialize(firstTime)
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function runner.initialize( firstTime )
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-- creates settings if user didnt
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settings = settings or {}
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@ -3620,74 +3659,109 @@ function runner.initialize(firstTime)
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lockGlobals()
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-- copies simple settings with numeric keys to 'key=true' settings.
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for k, v in ipairs(settings) do
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if settings[v] then
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log('Error', 'Double setting "'..v..'"')
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os.exit(-1) -- ERRNO
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for k, v in ipairs( settings ) do
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if settings[ v ] then
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log(
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'Error',
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'Double setting "' .. v.. '"'
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)
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os.exit( -1 )
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end
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settings[v]=true
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settings[ v ]= true
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end
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-- all command line settings overwrite config file settings
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for k, v in pairs(clSettings) do
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for k, v in pairs( clSettings ) do
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if k ~= 'syncs' then
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settings[k]=v
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settings[ k ] = v
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end
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end
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-- implicitly force insist to be true on Lsyncd resets.
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-- implicitly force 'insist' on Lsyncd resets.
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if not firstTime then
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settings.insist = true
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end
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-- adds syncs specified by command line.
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if clSettings.syncs then
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for _, s in ipairs(clSettings.syncs) do
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for _, s in ipairs( clSettings.syncs ) do
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if s[1] == 'rsync' then
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sync{default.rsync, source=s[2], target=s[3]}
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sync{
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default.rsync,
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source = s[ 2 ],
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target = s[ 3 ]
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}
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elseif s[1] == 'rsyncssh' then
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sync{default.rsyncssh, source=s[2], host=s[3], targetdir=s[4]}
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sync{
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default.rsyncssh,
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source = s[ 2 ],
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host = s[ 3 ],
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targetdir=s[ 4 ]
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}
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elseif s[1] == 'direct' then
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sync{default.direct, source=s[2], target=s[3]}
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sync{ default.direct, source=s[2], target=s[3]}
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end
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end
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end
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if settings.nodaemon then
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lsyncd.configure('nodaemon')
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end
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if settings.logfile then
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lsyncd.configure('logfile', settings.logfile)
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end
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if settings.logident then
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lsyncd.configure('logident', settings.logident)
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end
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if settings.logfacility then
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lsyncd.configure('logfacility', settings.logfacility)
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end
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if settings.pidfile then
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lsyncd.configure('pidfile', settings.pidfile)
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end
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-----
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-- transfers some defaults to settings
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--
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-- Transfers some defaults to settings
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--
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if settings.statusInterval == nil then
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settings.statusInterval = default.statusInterval
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end
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-- makes sure the user gave Lsyncd anything to do
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if Syncs.size() == 0 then
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log('Error', 'Nothing to watch!')
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os.exit(-1) -- ERRNO
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log(
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'Error',
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'Nothing to watch!'
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)
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os.exit( -1 )
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end
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-- from now on use logging as configured instead of stdout/err.
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lsyncdStatus = 'run';
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lsyncd.configure('running');
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lsyncd.configure( 'running' );
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local ufuncs = {
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'onAttrib', 'onCreate', 'onDelete',
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'onModify', 'onMove', 'onStartup',
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'onAttrib',
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'onCreate',
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'onDelete',
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'onModify',
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'onMove',
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'onStartup',
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}
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-- translates layer 3 scripts
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@ -3703,247 +3777,365 @@ function runner.initialize(firstTime)
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end
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-- runs through the Syncs created by users
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for _, s in Syncs.iwalk() do
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for _, s in Syncs.iwalk( ) do
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if s.config.monitor == 'inotify' then
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Inotify.addSync(s, s.source)
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Inotify.addSync( s, s.source )
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elseif s.config.monitor == 'fsevents' then
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Fsevents.addSync(s, s.source)
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Fsevents.addSync( s, s.source )
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else
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error('sync '..s.config.name..' has no known event monitor interface.')
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error(
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'sync ' ..
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s.config.name ..
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' has no known event monitor interface.'
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)
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end
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-- if the sync has an init function, stacks an init delay
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-- that will cause the init function to be called.
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-- if the sync has an init function, the init delay
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-- is stacked which causes the init function to be called.
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if s.config.init then
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s:addInitDelay()
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s:addInitDelay( )
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end
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end
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end
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----
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-- Called by core to query soonest alarm.
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--
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-- Called by core to query the soonest alarm.
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--
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-- @return false ... no alarm, core can in untimed sleep, or
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-- true ... immediate action
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-- times ... the alarm time (only read if number is 1)
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--
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function runner.getAlarm()
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function runner.getAlarm( )
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|
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if lsyncdStatus ~= 'run' then
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return false
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end
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local alarm = false
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----
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-- checks if current nearest alarm or a is earlier
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--
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local function checkAlarm(a)
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-- Checks if 'a' is sooner than the 'alarm' up-value.
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--
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local function checkAlarm( a )
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if a == nil then
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error('got nil alarm')
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end
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|
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if alarm == true or not a then
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-- already immediate or no new alarm
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-- 'alarm' is already immediate or
|
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-- a not a new alarm
|
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return
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end
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-- returns the ealier time
|
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|
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-- sets 'alarm' to a if a is sooner
|
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if not alarm or a < alarm then
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alarm = a
|
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end
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|
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end
|
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|
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-- checks all syncs for their earliest alarm
|
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--
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-- checks all syncs for their earliest alarm,
|
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-- but only if the global process limit is not yet reached.
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if not settings.maxProcesses or processCount < settings.maxProcesses then
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for _, s in Syncs.iwalk() do
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checkAlarm(s:getAlarm())
|
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--
|
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if
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not settings.maxProcesses or
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processCount < settings.maxProcesses
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then
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for _, s in Syncs.iwalk( ) do
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checkAlarm( s:getAlarm ( ))
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end
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else
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log('Alarm', 'at global process limit.')
|
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log(
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'Alarm',
|
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'at global process limit.'
|
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)
|
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end
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|
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-- checks if a statusfile write has been delayed
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checkAlarm(StatusFile.getAlarm())
|
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-- checks for an userAlarm
|
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checkAlarm(UserAlarms.getAlarm())
|
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checkAlarm( StatusFile.getAlarm( ) )
|
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|
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-- checks for an userAlarm
|
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checkAlarm( UserAlarms.getAlarm( ) )
|
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|
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log(
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'Alarm',
|
||||
'runner.getAlarm returns: ',
|
||||
alarm
|
||||
)
|
||||
|
||||
log('Alarm', 'runner.getAlarm returns: ',alarm)
|
||||
return alarm
|
||||
|
||||
end
|
||||
|
||||
|
||||
-----
|
||||
-- Called when an inotify event arrived.
|
||||
-- Simply forwards it directly to the object.
|
||||
--
|
||||
-- Called when an file system monitor events arrive
|
||||
--
|
||||
runner.inotifyEvent = Inotify.event
|
||||
runner.fsEventsEvent = Fsevents.event
|
||||
|
||||
-----
|
||||
--
|
||||
-- Collector for every child process that finished in startup phase
|
||||
--
|
||||
-- Parameters are pid and exitcode of child process
|
||||
--
|
||||
-- Can return either a new pid if one other child process
|
||||
-- has been spawned as replacement (e.g. retry) or 0 if
|
||||
-- finished/ok.
|
||||
--
|
||||
function runner.collector(pid, exitcode)
|
||||
function runner.collector(
|
||||
pid, -- pid of the child process
|
||||
exitcode -- exitcode of the child process
|
||||
)
|
||||
if exitcode ~= 0 then
|
||||
log('Error', 'Startup process',pid,' failed')
|
||||
terminate(-1) -- ERRNO
|
||||
terminate( -1 )
|
||||
end
|
||||
|
||||
return 0
|
||||
end
|
||||
|
||||
-----
|
||||
--
|
||||
-- Called by core when an overflow happened.
|
||||
--
|
||||
function runner.overflow()
|
||||
log('Normal', '--- OVERFLOW in event queue ---')
|
||||
function runner.overflow( )
|
||||
|
||||
log(
|
||||
'Normal',
|
||||
'--- OVERFLOW in event queue ---'
|
||||
)
|
||||
|
||||
lsyncdStatus = 'fade'
|
||||
|
||||
end
|
||||
|
||||
-----
|
||||
--
|
||||
-- Called by core on a hup signal.
|
||||
--
|
||||
function runner.hup()
|
||||
log('Normal', '--- HUP signal, resetting ---')
|
||||
function runner.hup( )
|
||||
|
||||
log(
|
||||
'Normal',
|
||||
'--- HUP signal, resetting ---'
|
||||
)
|
||||
|
||||
lsyncdStatus = 'fade'
|
||||
|
||||
end
|
||||
|
||||
-----
|
||||
--
|
||||
-- Called by core on a term signal.
|
||||
--
|
||||
function runner.term()
|
||||
log('Normal', '--- TERM signal, fading ---')
|
||||
function runner.term( )
|
||||
|
||||
log(
|
||||
'Normal',
|
||||
'--- TERM signal, fading ---'
|
||||
)
|
||||
|
||||
lsyncdStatus = 'fade'
|
||||
|
||||
end
|
||||
|
||||
--============================================================================
|
||||
-- Lsyncd user interface
|
||||
-- Lsyncd runner's user interface
|
||||
--============================================================================
|
||||
|
||||
-----
|
||||
-- Main utility to create new observations.
|
||||
-- @returns an Inlet to that sync.
|
||||
--
|
||||
function sync(opts)
|
||||
-- Main utility to create new observations.
|
||||
--
|
||||
-- Returns an Inlet to that sync.
|
||||
--
|
||||
function sync( opts )
|
||||
|
||||
if lsyncdStatus ~= 'init' then
|
||||
error('Sync can only be created during initialization.', 2)
|
||||
error(
|
||||
'Sync can only be created during initialization.',
|
||||
2
|
||||
)
|
||||
end
|
||||
return Syncs.add(opts).inlet
|
||||
|
||||
return Syncs.add( opts ).inlet
|
||||
|
||||
end
|
||||
|
||||
|
||||
-----
|
||||
--
|
||||
-- Spawns a new child process.
|
||||
--
|
||||
-- @param agent the reason why a process is spawned.
|
||||
-- normally this is a delay/event of a sync.
|
||||
-- it will mark the related files as blocked.
|
||||
-- @param binary binary to call
|
||||
-- @param ... arguments
|
||||
--
|
||||
function spawn(agent, binary, ...)
|
||||
if agent == nil or type(agent) ~= 'table' then
|
||||
error('spawning with an invalid agent', 2)
|
||||
function spawn(
|
||||
agent, -- the reason why a process is spawned.
|
||||
-- a delay or delay list for a sync
|
||||
-- it will mark the related files as blocked.
|
||||
binary, -- binary to call
|
||||
... -- arguments
|
||||
)
|
||||
if
|
||||
agent == nil or
|
||||
type( agent ) ~= 'table'
|
||||
then
|
||||
error(
|
||||
'spawning with an invalid agent',
|
||||
2
|
||||
)
|
||||
end
|
||||
|
||||
if lsyncdStatus == 'fade' then
|
||||
log('Normal', 'ignored process spawning while fading')
|
||||
log(
|
||||
'Normal',
|
||||
'ignored process spawning while fading'
|
||||
)
|
||||
return
|
||||
end
|
||||
|
||||
if type(binary) ~= 'string' then
|
||||
error('calling spawn(agent, binary, ...), binary is not a string', 2)
|
||||
if type( binary ) ~= 'string' then
|
||||
error(
|
||||
'calling spawn(agent, binary, ...): binary is not a string',
|
||||
2
|
||||
)
|
||||
end
|
||||
|
||||
local dol = InletFactory.getDelayOrList(agent)
|
||||
if not dol then error('spawning with an unknown agent', 2) end
|
||||
local dol = InletFactory.getDelayOrList( agent )
|
||||
|
||||
-- checks if spawn is called on already active event
|
||||
if not dol then
|
||||
error(
|
||||
'spawning with an unknown agent',
|
||||
2
|
||||
)
|
||||
end
|
||||
|
||||
--
|
||||
-- checks if a spawn is called on an already active event
|
||||
--
|
||||
if dol.status then
|
||||
|
||||
-- is an event
|
||||
|
||||
if dol.status ~= 'wait' then
|
||||
error('spawn() called on an non-waiting event', 2)
|
||||
end
|
||||
else -- is a list
|
||||
|
||||
else
|
||||
-- is a list
|
||||
|
||||
for _, d in ipairs(dol) do
|
||||
if d.status ~= 'wait' and d.status ~= 'block' then
|
||||
error('spawn() called on an non-waiting event list', 2)
|
||||
end
|
||||
end
|
||||
|
||||
end
|
||||
|
||||
local pid = lsyncd.exec(binary, ...)
|
||||
--
|
||||
-- tries to spawn the process
|
||||
--
|
||||
local pid = lsyncd.exec( binary, ... )
|
||||
|
||||
if pid and pid > 0 then
|
||||
|
||||
processCount = processCount + 1
|
||||
if settings.maxProcesses and processCount > settings.maxProcesses then
|
||||
error('Spawned too much processes!')
|
||||
if
|
||||
settings.maxProcesses and
|
||||
processCount > settings.maxProcesses
|
||||
then
|
||||
error( 'Spawned too much processes!' )
|
||||
end
|
||||
local sync = InletFactory.getSync(agent)
|
||||
|
||||
local sync = InletFactory.getSync( agent )
|
||||
|
||||
-- delay or list
|
||||
if dol.status then
|
||||
|
||||
-- is a delay
|
||||
dol.status = 'active'
|
||||
sync.processes[pid] = dol
|
||||
sync.processes[ pid ] = dol
|
||||
|
||||
else
|
||||
|
||||
-- is a list
|
||||
for _, d in ipairs(dol) do
|
||||
for _, d in ipairs( dol ) do
|
||||
d.status = 'active'
|
||||
end
|
||||
sync.processes[pid] = dol
|
||||
sync.processes[ pid ] = dol
|
||||
|
||||
end
|
||||
|
||||
end
|
||||
end
|
||||
|
||||
-----
|
||||
--
|
||||
-- Spawns a child process using the default shell.
|
||||
--
|
||||
function spawnShell(agent, command, ...)
|
||||
return spawn(agent, '/bin/sh', '-c', command, '/bin/sh', ...)
|
||||
function spawnShell(
|
||||
agent, -- the delay(list) to spawn the command for
|
||||
command, -- the shell command
|
||||
... -- additonal arguments
|
||||
)
|
||||
return spawn(
|
||||
agent,
|
||||
'/bin/sh',
|
||||
'-c',
|
||||
command,
|
||||
'/bin/sh',
|
||||
...
|
||||
)
|
||||
end
|
||||
|
||||
-----
|
||||
-- Observes a filedescriptor
|
||||
--
|
||||
function observefd(fd, ready, writey)
|
||||
return lsyncd.observe_fd(fd, ready, writey)
|
||||
function observefd(
|
||||
fd, -- file descriptor
|
||||
ready, -- called when fd is ready to be read
|
||||
writey -- called when fd is ready to be written
|
||||
)
|
||||
return lsyncd.observe_fd(
|
||||
fd,
|
||||
ready,
|
||||
writey
|
||||
)
|
||||
end
|
||||
|
||||
-----
|
||||
-- Nonobserves a filedescriptor
|
||||
--
|
||||
function nonobservefd(fd)
|
||||
return lsyncd.nonobserve_fd(fd)
|
||||
-- Stops observeing a filedescriptor
|
||||
--
|
||||
function nonobservefd(
|
||||
fd -- file descriptor
|
||||
)
|
||||
return lsyncd.nonobserve_fd( fd )
|
||||
end
|
||||
|
||||
-----
|
||||
--
|
||||
-- Calls func at timestamp.
|
||||
--
|
||||
-- Use now() to receive current timestamp
|
||||
-- add seconds with '+' to it)
|
||||
-- add seconds with '+' to it
|
||||
--
|
||||
alarm = UserAlarms.alarm
|
||||
|
||||
-----
|
||||
--
|
||||
-- Comfort routine also for user.
|
||||
-- Returns true if 'String' starts with 'Start'
|
||||
--
|
||||
function string.starts(String,Start)
|
||||
return string.sub(String,1,#Start)==Start
|
||||
function string.starts( String, Start )
|
||||
|
||||
return string.sub( String, 1, #Start )==Start
|
||||
|
||||
end
|
||||
|
||||
-----
|
||||
--
|
||||
-- Comfort routine also for user.
|
||||
-- Returns true if 'String' ends with 'End'
|
||||
--
|
||||
function string.ends(String,End)
|
||||
return End=='' or string.sub(String,-#End)==End
|
||||
function string.ends( String, End )
|
||||
|
||||
return End == '' or string.sub( String, -#End ) == End
|
||||
|
||||
end
|
||||
|
||||
-----
|
||||
-- provides a default empty settings table.
|
||||
--
|
||||
settings = {}
|
||||
-- Provides a default empty settings table.
|
||||
--
|
||||
settings = { }
|
||||
|
||||
-----
|
||||
--
|
||||
-- Returns the core the runners function interface.
|
||||
--
|
||||
return runner
|
||||
|
|
|
|||
Loading…
Reference in New Issue