Annotation of /bin/PrepareSnapshot

#!/usr/bin/perl -w
# PrepareSnapshot
# Vadim Mikheev, (c) 2000, PostgreSQL Inc.

eval '(exit $?0)' && eval 'exec perl -S $0 ${1+"$@"}'
    & eval 'exec perl -S $0 $argv:q'
    if 0;

BEGIN {
        my $basedir = $0; $basedir =~ s#/[^/]+$##;
        unshift(@INC, "$basedir/../share");
}

use strict;
use IO::File;
use Getopt::Long;
use RServ;
use Sys::Hostname;

$| = 1;

my ($debug,$verbose) = (0,0);
my ($help,$masterhost,$masterport,$masteruser,$masterpassword,
        $slavehost,$slaveport,$slaveuser,$slavepassword);
my $snapshot = "__Snapshot";

my $result = GetOptions(
        "debug!" => \$debug, "verbose!" => \$verbose, "help" => \$help,
        "masterhost=s" => \$masterhost, "masterport=i" => \$masterport,
        "masteruser=s" => \$masteruser, "masterpassword=s" => \$masterpassword,
        "snapshot=s" => \$snapshot,
        );

if (defined($help) || (scalar(@ARGV) < 2)) {
    print "Usage: $0 [options] masterdb slavedb
Options:
        --masterhost=hostname --masterport=port
        --masteruser=username --masterpassword=string
        --snapshot=snapshot
";
    exit ((scalar(@ARGV) < 2)? 1:0);
}

my $master = $ARGV[0] || "master";
my $slave = $ARGV[1] || "slave";

my $minfo = "dbname=$master";
$minfo = "$minfo host=$masterhost" if (defined($masterhost));
$minfo = "$minfo port=$masterport" if (defined($masterport));
$minfo = "$minfo user=$masteruser" if (defined($masteruser));
$minfo = "$minfo password=$masterpassword" if (defined($masterpassword));

my $sinfo = "dbname=$slave";
$sinfo = "$sinfo host=$slavehost" if (defined($slavehost));
$sinfo = "$sinfo port=$slaveport" if (defined($slaveport));
$sinfo = "$sinfo user=$slaveuser" if (defined($slaveuser));
$sinfo = "$sinfo password=$slavepassword" if (defined($slavepassword));

my $mconn = Pg::connectdb($minfo);
if ($mconn->status != Pg::PGRES_CONNECTION_OK) {
    print STDERR "Failed opening $minfo\n";
    exit 1;
}
my $sconn = Pg::connectdb($sinfo);
if ($sconn->status != Pg::PGRES_CONNECTION_OK) {
    print STDERR "Failed opening $minfo\n";
    exit 1;
}

my $outf;
if (defined($snapshot)) {
    $outf = new IO::File;    
    $outf->open("> $snapshot");
} else {
    $outf = *STDOUT;
}

my $hostname = defined($slavehost) ? $slavehost : hostname;
my $slaveId  = GetSlaveId($mconn, $slave, $hostname);
if (! $slaveId) {
        print STDERR "Can't find SlaveId for db '$slave' on host $hostname. Is this database slave?\n";
        exit 1;
}
die "Unknown SlaveId $slaveId for host $hostname" if ($slaveId < 0);

my $res = PrepareSnapshot ($mconn, $sconn, $outf, $slaveId);

if ($res == 0)
{
    printf STDERR "Sync-ed\n";
    exit(0);
}
if ($res > 0)
{
    printf STDERR "Snapshot dumped.\n";
    exit(0);
}

printf STDERR "ERROR\n";
exit(1);
1	dpavlin	1.4	#!/usr/bin/perl -w
2	dpavlin	1.1	# PrepareSnapshot
3			# Vadim Mikheev, (c) 2000, PostgreSQL Inc.
4
5			eval '(exit $?0)' && eval 'exec perl -S $0 ${1+"$@"}'
6			& eval 'exec perl -S $0 $argv:q'
7			if 0;
8
9	dpavlin	1.4	BEGIN {
10			my $basedir = $0; $basedir =~ s#/[^/]+$##;
11			unshift(@INC, "$basedir/../share");
12			}
13	dpavlin	1.1
14	dpavlin	1.4	use strict;
15	dpavlin	1.1	use IO::File;
16			use Getopt::Long;
17			use RServ;
18	dpavlin	1.3	use Sys::Hostname;
19	dpavlin	1.1
20			$\| = 1;
21
22	dpavlin	1.4	my ($debug,$verbose) = (0,0);
23			my ($help,$masterhost,$masterport,$masteruser,$masterpassword,
24			$slavehost,$slaveport,$slaveuser,$slavepassword);
25			my $snapshot = "__Snapshot";
26
27			my $result = GetOptions(
28			"debug!" => \$debug, "verbose!" => \$verbose, "help" => \$help,
29			"masterhost=s" => \$masterhost, "masterport=i" => \$masterport,
30			"masteruser=s" => \$masteruser, "masterpassword=s" => \$masterpassword,
31			"snapshot=s" => \$snapshot,
32			);
33
34			if (defined($help) \|\| (scalar(@ARGV) < 2)) {
35			print "Usage: $0 [options] masterdb slavedb
36			Options:
37			--masterhost=hostname --masterport=port
38			--masteruser=username --masterpassword=string
39			--snapshot=snapshot
40			";
41			exit ((scalar(@ARGV) < 2)? 1:0);
42	dpavlin	1.1	}
43
44			my $master = $ARGV[0] \|\| "master";
45	dpavlin	1.3	my $slave = $ARGV[1] \|\| "slave";
46	dpavlin	1.1
47			my $minfo = "dbname=$master";
48	dpavlin	1.4	$minfo = "$minfo host=$masterhost" if (defined($masterhost));
49			$minfo = "$minfo port=$masterport" if (defined($masterport));
50			$minfo = "$minfo user=$masteruser" if (defined($masteruser));
51			$minfo = "$minfo password=$masterpassword" if (defined($masterpassword));
52	dpavlin	1.3
53			my $sinfo = "dbname=$slave";
54	dpavlin	1.4	$sinfo = "$sinfo host=$slavehost" if (defined($slavehost));
55			$sinfo = "$sinfo port=$slaveport" if (defined($slaveport));
56			$sinfo = "$sinfo user=$slaveuser" if (defined($slaveuser));
57			$sinfo = "$sinfo password=$slavepassword" if (defined($slavepassword));
58	dpavlin	1.3
59			my $mconn = Pg::connectdb($minfo);
60	dpavlin	1.4	if ($mconn->status != Pg::PGRES_CONNECTION_OK) {
61	dpavlin	1.3	print STDERR "Failed opening $minfo\n";
62			exit 1;
63			}
64			my $sconn = Pg::connectdb($sinfo);
65	dpavlin	1.4	if ($sconn->status != Pg::PGRES_CONNECTION_OK) {
66	dpavlin	1.3	print STDERR "Failed opening $minfo\n";
67			exit 1;
68			}
69	dpavlin	1.1
70	dpavlin	1.3	my $outf;
71	dpavlin	1.4	if (defined($snapshot)) {
72	dpavlin	1.3	$outf = new IO::File;
73	dpavlin	1.4	$outf->open("> $snapshot");
74	dpavlin	1.3	} else {
75	dpavlin	1.4	$outf = *STDOUT;
76	dpavlin	1.3	}
77	dpavlin	1.1
78	dpavlin	1.4	my $hostname = defined($slavehost) ? $slavehost : hostname;
79			my $slaveId = GetSlaveId($mconn, $slave, $hostname);
80			if (! $slaveId) {
81			print STDERR "Can't find SlaveId for db '$slave' on host $hostname. Is this database slave?\n";
82			exit 1;
83			}
84	dpavlin	1.3	die "Unknown SlaveId $slaveId for host $hostname" if ($slaveId < 0);
85	dpavlin	1.2
86	dpavlin	1.4	my $res = PrepareSnapshot ($mconn, $sconn, $outf, $slaveId);
87	dpavlin	1.1
88			if ($res == 0)
89			{
90	dpavlin	1.3	printf STDERR "Sync-ed\n";
91			exit(0);
92	dpavlin	1.1	}
93			if ($res > 0)
94			{
95	dpavlin	1.3	printf STDERR "Snapshot dumped.\n";
96			exit(0);
97	dpavlin	1.1	}
98
99			printf STDERR "ERROR\n";
100			exit(1);