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#!/usr/bin/perl -w
# recover rsyslog disk queue index (.qi) from queue files (.nnnnnnnn).
#
# See:
# runtime/queue.c: qqueuePersist()
# runtime/queue.c: qqueueTryLoadPersistedInfo()
#
# kaiwang.chen@gmail.com 2012-03-14
#
use strict;
use Getopt::Long;
my %opt = ();
GetOptions(\%opt,"spool|w=s","basename|f=s","digits|d=i","help!");
if ($opt{help}) {
print "Usage:
\t$0 -w WorkDirectory -f QueueFileName -d 8 > QueueFileName.qi
";
exit;
}
# runtime/queue.c: qConstructDisk()
my $iMaxFiles = 10000000; # 0+"1".( "0"x($opt{digits} - 1));
# get the list of queue files, spool directory excluded
my $re = qr/^\Q$opt{basename}\E\.\d{$opt{digits}}$/;
opendir(DIR, $opt{spool}) or die "can’t open spool: $!";
my @qf = grep { /$re/ && -f "$opt{spool}/$_" } readdir(DIR);
closedir DIR;
# ensure order and continuity
@qf = sort @qf;
my ($head) = ($qf[0] =~ /(\d+)$/);
my ($tail) = ($qf[-1] =~ /(\d+)$/);
$head += 0;
$tail += 0;
if ($tail-$head+1 != @qf || $tail > $iMaxFiles) {
die "broken queue: missing file(s) or wrong tail\n";
}
# collect some counters about the queue, assuming all are unprocessed entries.
my $sizeOnDisk = 0;
my $iQueueSize = 0;
chdir($opt{spool}) or die "can't chdir to spool: $!";
print STDERR "traversing ". @qf ." files, please wait...\n";
for (@qf) {
open FH, "<", $_ or die "can't read queue file $_\n";
$sizeOnDisk += (stat FH)[7];
while (<FH>) {
$iQueueSize++ if /^<Obj/; # runtime/msg.c: MsgSerialize()
}
close FH;
}
# happen to reuse last stat
my $iCurrOffs_Write = (stat(_))[7];
# runtime/queue.c: qqueuePersist()
my $qqueue = Rsyslog::OPB->new("qqueue",1);
$qqueue->property("iQueueSize", "INT", $iQueueSize);
$qqueue->property("tVars.disk.sizeOnDisk", "INT64", $sizeOnDisk);
$qqueue->property("tVars.disk.bytesRead", "INT64", 0);
# runtime/stream.h: strmType_t
my $STREAMTYPE_FILE_CIRCULAR = 1;
# runtime/stream.h: strmMode_t
my $STREAMMODE_READ = 1;
my $STREAMMODE_WRITE_APPEND = 4;
# runtime/stream.c: strmSerialize()
# write to end
my $strm_Write = Rsyslog::Obj->new("strm",1);
$strm_Write->property( "iCurrFNum", "INT", $tail);
$strm_Write->property( "pszFName", "PSZ", $opt{basename});
$strm_Write->property( "iMaxFiles", "INT", $iMaxFiles);
$strm_Write->property( "bDeleteOnClose", "INT", 0);
$strm_Write->property( "sType", "INT", $STREAMTYPE_FILE_CIRCULAR);
$strm_Write->property("tOperationsMode", "INT", $STREAMMODE_WRITE_APPEND);
$strm_Write->property( "tOpenMode", "INT", 0600);
$strm_Write->property( "iCurrOffs","INT64", $iCurrOffs_Write);
# read from head
my $strm_ReadDel = Rsyslog::Obj->new("strm",1);
$strm_ReadDel->property( "iCurrFNum", "INT", $head);
$strm_ReadDel->property( "pszFName", "PSZ", $opt{basename});
$strm_ReadDel->property( "iMaxFiles", "INT", $iMaxFiles);
$strm_ReadDel->property( "bDeleteOnClose", "INT", 1);
$strm_ReadDel->property( "sType", "INT", $STREAMTYPE_FILE_CIRCULAR);
$strm_ReadDel->property("tOperationsMode", "INT", $STREAMMODE_READ);
$strm_ReadDel->property( "tOpenMode", "INT", 0600);
$strm_ReadDel->property( "iCurrOffs","INT64", 0);
# .qi
print $qqueue->serialize();
print $strm_Write->serialize();
print $strm_ReadDel->serialize();
exit;
#-----------------------------------------------------------------------------
package Rsyslog::Serializable;
# runtime/obj.c
sub COOKIE_OBJLINE { '<' }
sub COOKIE_PROPLINE { '+' }
sub COOKIE_ENDLINE { '>' }
sub COOKIE_BLANKLINE { '.' }
# VARTYPE(short_ptype)
sub VARTYPE {
my ($t) = @_;
# runtime/obj-types.h: propType_t
my $ptype = "PROPTYPE_".$t;
# runtime/var.h: varType_t
my %vm = (
VARTYPE_NONE => 0,
VARTYPE_STR => 1,
VARTYPE_NUMBER => 2,
VARTYPE_SYSLOGTIME => 3,
);
# runtime/obj.c: SerializeProp()
my %p2v = (
#PROPTYPE_NONE => "",
PROPTYPE_PSZ => "VARTYPE_STR",
PROPTYPE_SHORT => "VARTYPE_NUMBER",
PROPTYPE_INT => "VARTYPE_NUMBER",
PROPTYPE_LONG => "VARTYPE_NUMBER",
PROPTYPE_INT64 => "VARTYPE_NUMBER",
PROPTYPE_CSTR => "VARTYPE_STR",
#PROPTYPE_SYSLOGTIME => "VARTYPE_SYSLOGTIME",
);
my $vtype = $p2v{$ptype};
unless ($vtype) {
die "property type $t is not supported!\n";
}
return $vm{$vtype};
}
sub serialize {
my $self = shift;
# runtime/obj.c: objSerializeHeader()
my $x = COOKIE_OBJLINE();
$x .= join(":", $self->type(), $self->cver(), $self->id(), $self->version());
$x .= ":\n";
for ( values %{$self->{props}} ) {
# runtime/obj.c: SerializeProp()
$x .= COOKIE_PROPLINE();
$x .= join(":",
$_->{name},
VARTYPE($_->{type}),
length($_->{value}),
$_->{value});
$x .= ":\n";
}
# runtime/obj.c: EndSerialize()
$x .= COOKIE_ENDLINE() . "End\n";
$x .= COOKIE_BLANKLINE() . "\n";
}
# constructor: new(id,version)
sub new {
my ($class, $id, $version) = @_;
$class = ref $class if ref $class;
bless {
id => $id,
version => $version,
props => {},
}, $class;
}
sub id {
my $self = shift;
if (@_) {
my $x = $self->{id};
$self->{id} = shift;
return $x;
}
return $self->{id};
}
sub version {
my $self = shift;
if (@_) {
my $x = $self->{version};
$self->{version} = shift;
return $x;
}
return $self->{version};
}
# property(name, type, value)
sub property {
my $self = shift;
my $name = shift;
if (@_) {
my $x = $self->{props}{$name};
$self->{props}{$name}{name} = $name;
$self->{props}{$name}{type} = shift;
$self->{props}{$name}{value} = shift;
return $x;
}
return $self->{props}{$name};
}
1;
package Rsyslog::OPB;
use base qw(Rsyslog::Serializable);
sub type { 'OPB' }
sub cver { 1 }
sub new { shift->SUPER::new(@_) }
1;
package Rsyslog::Obj;
use base qw(Rsyslog::Serializable);
sub type { 'Obj' }
sub cver { 1 }
sub new { shift->SUPER::new(@_) }
1;