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#!/usr/bin/perl -w |
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# SlaveInit |
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# Vadim Mikheev, (c) 2000, PostgreSQL Inc. |
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|
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eval '(exit $?0)' && eval 'exec perl -S $0 ${1+"$@"}' |
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& eval 'exec perl -S $0 $argv:q' |
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if 0; |
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|
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use strict; |
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use Pg; |
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use Getopt::Long; |
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use Sys::Hostname; |
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|
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$| = 1; |
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|
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my ($debug,$verbose,$quiet) = (0,0,0); |
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my ($help,$masterhost,$masterport,$masteruser,$masterpassword, |
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$slavehost,$slaveport,$slaveuser,$slavepassword); |
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|
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my $result = GetOptions( |
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"debug!" => \$debug, "verbose!" => \$verbose, |
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"quiet!" => \$quiet, "help" => \$help, |
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"masterhost=s" => \$masterhost, "masterport=i" => \$masterport, |
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"masteruser=s" => \$masteruser, "masterpassword=s" => \$masterpassword, |
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"slavehost=s" => \$slavehost, "slaveport=i" => \$slaveport, |
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"slaveuser=s" => \$slaveuser, "slavepassword=s" => \$slavepassword, |
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); |
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|
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if (defined($help) || (scalar(@ARGV) < 2)) { |
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print "Usage: $0 [options] masterdb slavedb |
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Options: |
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--masterhost=hostname --masterport=port |
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--masteruser=username --masterpassword=string |
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--slavehost=hostname --slaveport=port |
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--slaveuser=username --slavepassword=string |
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"; |
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exit ((scalar(@ARGV) < 2)? 1:0); |
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} |
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|
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my $master = $ARGV[0] || "master"; |
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my $slave = $ARGV[1] || "slave"; |
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|
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my $sinfo = "dbname=$slave"; |
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$sinfo = "$sinfo host=$slavehost" if (defined($slavehost)); |
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$sinfo = "$sinfo port=$slaveport" if (defined($slaveport)); |
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$sinfo = "$sinfo user=$slaveuser" if (defined($slaveuser)); |
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$sinfo = "$sinfo password=$slavepassword" if (defined($slavepassword)); |
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|
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my $minfo = "dbname=$master"; |
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$minfo = "$minfo host=$masterhost" if (defined($masterhost)); |
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$minfo = "$minfo port=$masterport" if (defined($masterport)); |
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$minfo = "$minfo user=$masteruser" if (defined($masteruser)); |
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$minfo = "$minfo password=$masterpassword" if (defined($masterpassword)); |
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|
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sub RollbackAndQuit { |
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my $conn = shift @_; |
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|
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print STDERR $conn->errorMessage; |
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$conn->exec("ROLLBACK"); |
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exit (-1); |
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} |
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|
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# First, lets add the needed information in the slave database |
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|
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print("Connecting to $sinfo\n") if ($debug || $verbose); |
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my $conn = Pg::connectdb($sinfo); |
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if ($conn->status != PGRES_CONNECTION_OK) { |
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print STDERR "Failed opening $sinfo\n"; |
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exit 1; |
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} |
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|
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$result = $conn->exec("BEGIN"); |
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RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK); |
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|
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$result = $conn->exec("set transaction isolation level serializable"); |
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RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK); |
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|
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$result = $conn->exec("create table _RSERV_SLAVE_TABLES_" . |
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" (tname name not null, cname name not null, reloid oid not null, key int4 not null)"); |
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RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK); |
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|
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$result = $conn->exec("create table _RSERV_SLAVE_SYNC_" . |
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" (syncid int4, synctime timestamp)"); |
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RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK); |
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|
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|
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# next, let's tell the master that the slave is set up. |
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|
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print("Connecting to $minfo\n") if ($debug || $verbose); |
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my $mconn = Pg::connectdb($minfo); |
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if ($mconn->status != PGRES_CONNECTION_OK) { |
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print STDERR "Failed opening $minfo\n"; |
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RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK); |
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# exit 1; |
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} |
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|
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my $host = defined($slavehost) ? $slavehost : hostname; |
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|
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$result = $mconn->exec("INSERT INTO _RSERV_SERVERS_ (host,dbase) VALUES ('$host','$slave')"); |
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if ($result->resultStatus ne PGRES_COMMAND_OK) { |
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print STDERR $mconn->errorMessage; |
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RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK); |
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# exit (-1); |
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} |
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|
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|
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# then commit the slave transaction |
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|
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$result = $conn->exec("COMMIT"); |
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RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK); |
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|
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|
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|
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exit (0); |
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