Annotation of /bin/SlaveInit

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

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

use Pg;
use Getopt::Long;
use Sys::Hostname;

$| = 1;

$result = GetOptions("debug!", "verbose!", "quiet!", "help",
                     "masterhost=s", "masteruser=s", "masterpassword=s",
                     "slavehost=s", "slaveuser=s", "slavepassword=s");

my $debug = $opt_debug || 0;
my $verbose = $opt_verbose || 0;
my $quiet = $opt_quiet || 0;

if (defined($opt_help) || (scalar(@ARGV) < 2)) {
    print "Usage: $0 --masterhost=name --masteruser=name --masterpassword=string --slavehost=name --slaveuser=name --slavepassword=string masterdb slavedb\n";
    exit ((scalar(@ARGV) < 1)? 1:0);
}

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

my $sinfo = "dbname=$slave";
$sinfo = "$sinfo host=$opt_slavehost" if (defined($opt_slavehost));
$sinfo = "$sinfo user=$opt_slaveuser" if (defined($opt_slaveuser));
$sinfo = "$sinfo password=$opt_slavepassword" if (defined($opt_slavepassword));

my $minfo = "dbname=$master";
$minfo = "$minfo host=$opt_masterhost" if (defined($opt_masterhost));
$minfo = "$minfo user=$opt_masteruser" if (defined($opt_masteruser));
$minfo = "$minfo password=$opt_masterpassword" if (defined($opt_masterpassword));

sub RollbackAndQuit {
    my $conn = shift @_;

    print STDERR $conn->errorMessage;
    $conn->exec("ROLLBACK");
    exit (-1);
}

# First, lets add the needed information in the slave database

print("Connecting to $sinfo\n") if ($debug || $verbose);
my $conn = Pg::connectdb($sinfo);
if ($conn->status != PGRES_CONNECTION_OK) {
    print STDERR "Failed opening $sinfo\n";
    exit 1;
}

my $result = $conn->exec("BEGIN");
RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);

$result = $conn->exec("set transaction isolation level serializable");
RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);

$result = $conn->exec("create table _RSERV_SLAVE_TABLES_" .
                      " (tname name not null, cname name not null, reloid oid not null, key int4 not null)");
RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);

$result = $conn->exec("create table _RSERV_SLAVE_SYNC_" .
                      " (syncid int4, synctime timestamp)");
RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);


# next, let's tell the master that the slave is set up.

print("Connecting to $minfo\n") if ($debug || $verbose);
$mconn = Pg::connectdb($minfo);
if ($mconn->status != PGRES_CONNECTION_OK) {
    print STDERR "Failed opening $minfo\n";
    RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);
#    exit 1;
}

$host = defined($opt_slavehost) ? $opt_slavehost : hostname;

$result = $mconn->exec("INSERT INTO _RSERV_SERVERS_ (host,dbase) VALUES ('$host','$slave')");
if ($result->resultStatus ne PGRES_COMMAND_OK) {
    print STDERR $mconn->errorMessage;
    RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);
#    exit (-1);
}


# then commit the slave transaction

$result = $conn->exec("COMMIT");
RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);


exit (0);
1	dpavlin	1.2	#!/usr/bin/perl
2	dpavlin	1.1	# SlaveInit
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			use Pg;
10			use Getopt::Long;
11	dpavlin	1.3	use Sys::Hostname;
12	dpavlin	1.1
13			$\| = 1;
14
15			$result = GetOptions("debug!", "verbose!", "quiet!", "help",
16	dpavlin	1.3	"masterhost=s", "masteruser=s", "masterpassword=s",
17			"slavehost=s", "slaveuser=s", "slavepassword=s");
18	dpavlin	1.1
19			my $debug = $opt_debug \|\| 0;
20			my $verbose = $opt_verbose \|\| 0;
21			my $quiet = $opt_quiet \|\| 0;
22
23	dpavlin	1.3	if (defined($opt_help) \|\| (scalar(@ARGV) < 2)) {
24			print "Usage: $0 --masterhost=name --masteruser=name --masterpassword=string --slavehost=name --slaveuser=name --slavepassword=string masterdb slavedb\n";
25	dpavlin	1.1	exit ((scalar(@ARGV) < 1)? 1:0);
26			}
27
28	dpavlin	1.3	my $master = $ARGV[0] \|\| "master";
29			my $slave = $ARGV[1] \|\| "slave";
30	dpavlin	1.1
31			my $sinfo = "dbname=$slave";
32	dpavlin	1.3	$sinfo = "$sinfo host=$opt_slavehost" if (defined($opt_slavehost));
33			$sinfo = "$sinfo user=$opt_slaveuser" if (defined($opt_slaveuser));
34			$sinfo = "$sinfo password=$opt_slavepassword" if (defined($opt_slavepassword));
35
36			my $minfo = "dbname=$master";
37			$minfo = "$minfo host=$opt_masterhost" if (defined($opt_masterhost));
38			$minfo = "$minfo user=$opt_masteruser" if (defined($opt_masteruser));
39			$minfo = "$minfo password=$opt_masterpassword" if (defined($opt_masterpassword));
40	dpavlin	1.1
41			sub RollbackAndQuit {
42			my $conn = shift @_;
43
44			print STDERR $conn->errorMessage;
45			$conn->exec("ROLLBACK");
46			exit (-1);
47			}
48
49	dpavlin	1.3	# First, lets add the needed information in the slave database
50
51	dpavlin	1.1	print("Connecting to $sinfo\n") if ($debug \|\| $verbose);
52			my $conn = Pg::connectdb($sinfo);
53			if ($conn->status != PGRES_CONNECTION_OK) {
54			print STDERR "Failed opening $sinfo\n";
55			exit 1;
56			}
57
58			my $result = $conn->exec("BEGIN");
59			RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);
60
61			$result = $conn->exec("set transaction isolation level serializable");
62			RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);
63
64			$result = $conn->exec("create table _RSERV_SLAVE_TABLES_" .
65	dpavlin	1.3	" (tname name not null, cname name not null, reloid oid not null, key int4 not null)");
66	dpavlin	1.1	RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);
67
68			$result = $conn->exec("create table _RSERV_SLAVE_SYNC_" .
69			" (syncid int4, synctime timestamp)");
70			RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);
71
72	dpavlin	1.3
73			# next, let's tell the master that the slave is set up.
74
75			print("Connecting to $minfo\n") if ($debug \|\| $verbose);
76			$mconn = Pg::connectdb($minfo);
77			if ($mconn->status != PGRES_CONNECTION_OK) {
78			print STDERR "Failed opening $minfo\n";
79			RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);
80			# exit 1;
81			}
82
83			$host = defined($opt_slavehost) ? $opt_slavehost : hostname;
84
85			$result = $mconn->exec("INSERT INTO _RSERV_SERVERS_ (host,dbase) VALUES ('$host','$slave')");
86			if ($result->resultStatus ne PGRES_COMMAND_OK) {
87			print STDERR $mconn->errorMessage;
88			RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);
89			# exit (-1);
90			}
91
92
93			# then commit the slave transaction
94
95	dpavlin	1.1	$result = $conn->exec("COMMIT");
96			RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);
97
98	dpavlin	1.3
99
100	dpavlin	1.1	exit (0);