/[rserv]/bin/PrepareSnapshot
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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revision 1.3 by dpavlin, Tue Aug 5 09:52:36 2003 UTC revision 1.11 by dpavlin, Sun Nov 2 10:21:45 2003 UTC
# Line 1  Line 1 
1  #!/usr/bin/perl  #!/usr/bin/perl -w
2  # PrepareSnapshot  # PrepareSnapshot
3  # Vadim Mikheev, (c) 2000, PostgreSQL Inc.  # Vadim Mikheev, (c) 2000, PostgreSQL Inc.
4    
# Line 6  eval '(exit $?0)' && eval 'exec perl -S Line 6  eval '(exit $?0)' && eval 'exec perl -S
6      & eval 'exec perl -S $0 $argv:q'      & eval 'exec perl -S $0 $argv:q'
7      if 0;      if 0;
8    
9  use lib "/usr/share/postgresql/contrib";  BEGIN {
10            my $basedir = $0; $basedir =~ s#/[^/]+$##;
11            unshift(@INC, "$basedir/../share");
12    }
13    
14    use strict;
15  use IO::File;  use IO::File;
16  use Getopt::Long;  use Getopt::Long;
17  use RServ;  use RServ;
 use Sys::Hostname;  
18    
19  $| = 1;  $| = 1;
20    
21  $result = GetOptions("debug!", "verbose!", "help", "snapshot=s",  my ($debug,$verbose) = (0,0);
22                       "masterhost=s", "masteruser=s", "masterpassword=s",  my ($help,$masterhost,$masterport,$masteruser,$masterpassword,
23                       "slavehost=s", "slaveuser=s", "slavepassword=s");          $slavehost,$slaveport,$slaveuser,$slavepassword);
24    my $snapshot;
25  my $debug = $opt_debug || 0;  
26  my $verbose = $opt_verbose || 0;  my $result = GetOptions(
27  my $snapshot = $opt_snapshot || "__Snapshot";          "debug!" => \$debug, "verbose!" => \$verbose, "help" => \$help,
28            "masterhost=s" => \$masterhost, "masterport=i" => \$masterport,
29  if (defined($opt_help) || (scalar(@ARGV) < 2)) {          "masteruser=s" => \$masteruser, "masterpassword=s" => \$masterpassword,
30      print "Usage: $0 --snapshot=file --masterhost=name --masteruser=name --masterpassword=string --slavehost=name --slaveuser=name --slavepassword=string masterdb slavedb\n";          "snapshot=s" => \$snapshot,
31      exit ((scalar(@ARGV) < 1)? 1:0);          );
32    
33    if (defined($help) || (scalar(@ARGV) < 2)) {
34        print "Usage: $0 [options] masterdb slavedb
35    Options:
36            --masterhost=hostname --masterport=port
37            --masteruser=username --masterpassword=string
38            --snapshot=snapshot
39    ";
40        exit ((scalar(@ARGV) < 2)? 1:0);
41    }
42    
43    $RServ::quiet = !$verbose;
44    if ($debug) {
45            $RServ::quiet = 0;
46            no warnings 'vars';
47            $RServ::debug = $debug;
48  }  }
49    
50  my $master = $ARGV[0] || "master";  my $master = $ARGV[0] || "master";
51  my $slave = $ARGV[1] || "slave";  my $slave = $ARGV[1] || "slave";
52    
53  my $minfo = "dbname=$master";  my $minfo = MkInfo($master,$masterhost,$masterport,$masteruser,$masterpassword);
54  $minfo = "$minfo host=$opt_masterhost" if (defined($opt_masterhost));  my $sinfo = MkInfo($slave,$slavehost,$slaveport,$slaveuser,$slavepassword);
 $minfo = "$minfo user=$opt_masteruser" if (defined($opt_masteruser));  
 $minfo = "$minfo password=$opt_masterpassword" if (defined($opt_masterpassword));  
   
 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));  
55    
56  my $mconn = Pg::connectdb($minfo);  my $mconn = Pg::connectdb($minfo);
57  if ($mconn->status != PGRES_CONNECTION_OK) {  if ($mconn->status != Pg::PGRES_CONNECTION_OK) {
58      print STDERR "Failed opening $minfo\n";      print STDERR "Failed opening $minfo\n";
59      exit 1;      exit 1;
60  }  }
61  my $sconn = Pg::connectdb($sinfo);  my $sconn = Pg::connectdb($sinfo);
62  if ($sconn->status != PGRES_CONNECTION_OK) {  if ($sconn->status != Pg::PGRES_CONNECTION_OK) {
63      print STDERR "Failed opening $minfo\n";      print STDERR "Failed opening $minfo\n";
64      exit 1;      exit 1;
65  }  }
66    
67  my $outf;  my $outf;
68  if (defined($opt_snapshot)) {  if (defined($snapshot)) {
69      $outf = new IO::File;          $outf = new IO::File;    
70      $outf->open("> $opt_snapshot");      $outf->open("> $snapshot");
71  } else {  } else {
72      $outf = STDOUT;      $outf = *STDOUT;
73  }  }
74    
75  $hostname = defined($opt_slavehost) ? $opt_slavehost : hostname;  $slavehost = 'localhost' if (! $slavehost);
76  $slaveId  = GetSlaveId($mconn, $slave, $hostname);  my $slaveId  = GetServerId($mconn, $slave, $slavehost);
77  die "Unknown SlaveId $slaveId for host $hostname" if ($slaveId < 0);  if (! defined($slaveId)) {
78            print STDERR "Can't find SlaveId for db '$slave' on host $slavehost. Is this database slave?\n";
79            exit 1;
80    }
81    die "Unknown SlaveId $slaveId for host $slavehost" if ($slaveId < 0);
82    
83  $res = PrepareSnapshot ($mconn, $sconn, $outf, $slaveId);  $masterhost = 'localhost' if (! $masterhost);
84    my $masterId  = GetServerId($mconn, $master, $masterhost);
85    if (! defined($masterId)) {
86            print STDERR "Can't find masterId for db '$master' on host $masterhost. Is this database master?\n";
87            exit 1;
88    }
89    die "Unknown masterId $masterId for host $masterhost" if ($masterId < 0);
90    my $res = PrepareSnapshot ($mconn, $sconn, $outf, $masterId, $slaveId);
91    
92  if ($res == 0)  if ($res == 0)
93  {  {
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