/[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 1.1 by dpavlin, Wed Dec 20 17:22:35 2000 UTC revision 1.6 by dpavlin, Fri Aug 15 23:00:27 2003 UTC
# Line 1  Line 1 
1  # -*- 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 "@LIBDIR@";  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;
18    use Sys::Hostname;
19    
20  $| = 1;  $| = 1;
21    
22  $result = GetOptions("debug!", "verbose!", "help", "snapshot=s",  my ($debug,$verbose) = (0,0);
23                       "host=s", "user=s", "password=s");  my ($help,$masterhost,$masterport,$masteruser,$masterpassword,
24            $slavehost,$slaveport,$slaveuser,$slavepassword);
25    my $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    }
43    
44  my $debug = $opt_debug || 0;  $RServ::quiet = !$verbose;
45  my $verbose = $opt_verbose || 0;  if ($debug) {
46  my $snapshot = $opt_snapshot || "__Snapshot";          $RServ::quiet = 0;
47            no warnings 'vars';
48  if (defined($opt_help) || (scalar(@ARGV) < 1)) {          $RServ::debug = $debug;
     print "Usage: $0 --snapshot=file --host=name --user=name --password=string masterdb\n";  
     exit ((scalar(@ARGV) < 1)? 1:0);  
49  }  }
50    
51  my $master = $ARGV[0] || "master";  my $master = $ARGV[0] || "master";
52  my $server = 0;  my $slave = $ARGV[1] || "slave";
53    
54  my $minfo = "dbname=$master";  my $minfo = "dbname=$master";
55  $minfo = "$minfo host=$opt_host" if (defined($opt_host));  $minfo = "$minfo host=$masterhost" if (defined($masterhost));
56  $minfo = "$minfo user=$opt_user" if (defined($opt_user));  $minfo = "$minfo port=$masterport" if (defined($masterport));
57  $minfo = "$minfo password=$opt_password" if (defined($opt_password));  $minfo = "$minfo user=$masteruser" if (defined($masteruser));
58    $minfo = "$minfo password=$masterpassword" if (defined($masterpassword));
59    
60    my $sinfo = "dbname=$slave";
61    $sinfo = "$sinfo host=$slavehost" if (defined($slavehost));
62    $sinfo = "$sinfo port=$slaveport" if (defined($slaveport));
63    $sinfo = "$sinfo user=$slaveuser" if (defined($slaveuser));
64    $sinfo = "$sinfo password=$slavepassword" if (defined($slavepassword));
65    
66    my $mconn = Pg::connectdb($minfo);
67    if ($mconn->status != Pg::PGRES_CONNECTION_OK) {
68        print STDERR "Failed opening $minfo\n";
69        exit 1;
70    }
71    my $sconn = Pg::connectdb($sinfo);
72    if ($sconn->status != Pg::PGRES_CONNECTION_OK) {
73        print STDERR "Failed opening $minfo\n";
74        exit 1;
75    }
76    
77  my $conn = Pg::connectdb($minfo);  my $outf;
78    if (defined($snapshot)) {
79        $outf = new IO::File;    
80        $outf->open("> $snapshot");
81    } else {
82        $outf = *STDOUT;
83    }
84    
85  my $outf = new IO::File;  my $hostname = defined($slavehost) ? $slavehost : hostname;
86  $outf = STDOUT;  my $slaveId  = GetSlaveId($mconn, $slave, $hostname);
87    if (! $slaveId) {
88            print STDERR "Can't find SlaveId for db '$slave' on host $hostname. Is this database slave?\n";
89            exit 1;
90    }
91    die "Unknown SlaveId $slaveId for host $hostname" if ($slaveId < 0);
92    
93  $res = PrepareSnapshot ($conn, $outf, $server);  my $res = PrepareSnapshot ($mconn, $sconn, $outf, $slaveId);
94    
95  if ($res == 0)  if ($res == 0)
96  {  {
97          printf STDERR "Sync-ed\n";      printf STDERR "Sync-ed\n";
98          exit(0);      exit(0);
99  }  }
100  if ($res > 0)  if ($res > 0)
101  {  {
102          printf STDERR "Snapshot dumped to STDOUT\n";      printf STDERR "Snapshot dumped.\n";
103          exit(0);      exit(0);
104  }  }
105    
106  printf STDERR "ERROR\n";  printf STDERR "ERROR\n";
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