rsyslog Control Structures

http://blog.51cto.com/linuxme/950051


Control Structures

RainerScript中的控制结构和C，java，javascript等程序中都非常相似。
if

if ($msg contains "important") then {
   if ( $.foo != "" ) then set $.foo = $.bar & $.baz;
   action(type="omfile" file="/var/log/important.log" template="outfmt")
}

if/else-if/else

if ($msg contains "important") then {
   set $.foo = $.bar & $.baz;
   action(type="omfile" file="/var/log/important.log" template="outfmt")
} else if ($msg startswith "slow-query:") then {
   action(type="omfile" file="/var/log/slow_log.log" template="outfmt")
} else {
   set $.foo = $.quux;
   action(type="omfile" file="/var/log/general.log" template="outfmt")
}

foreach
Foreach可以迭代数组和对象。 与数组迭代（有序）相反，对象迭代以任意顺序访问键值（无序）。
对于下面的foreach调用：

foreach ($.i in $.collection) do {
   ...
}

foreach ($.quux in $!foo) do {
   action(type="omfile" file="./rsyslog.out.log" template="quux")
   foreach ($.corge in $.quux!bar) do {
      reset $.grault = $.corge;
      action(type="omfile" file="./rsyslog.out.log" template="grault")
      if ($.garply != "") then
          set $.garply = $.garply & ", ";
      reset $.garply = $.garply & $.grault!baz;
   }
}

call

continue

Filter Conditions