/[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 1.2 by dpavlin, Tue Aug 5 09:20:08 2003 UTC revision 1.7 by dpavlin, Wed Oct 29 18:00:18 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;
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    my $mserver = 0;
27    
28    my $result = GetOptions(
29            "debug!" => \$debug, "verbose!" => \$verbose, "help" => \$help,
30            "masterhost=s" => \$masterhost, "masterport=i" => \$masterport,
31            "masteruser=s" => \$masteruser, "masterpassword=s" => \$masterpassword,
32            "snapshot=s" => \$snapshot,
33            "masterserver=i" => \$mserver,
34            );
35    
36    if (defined($help) || (scalar(@ARGV) < 2)) {
37        print "Usage: $0 [options] masterdb slavedb
38    Options:
39            --masterhost=hostname --masterport=port
40            --masteruser=username --masterpassword=string
41            --snapshot=snapshot
42            [--masterserver=master_number]
43    ";
44        exit ((scalar(@ARGV) < 2)? 1:0);
45    }
46    
47  my $debug = $opt_debug || 0;  $RServ::quiet = !$verbose;
48  my $verbose = $opt_verbose || 0;  if ($debug) {
49  my $snapshot = $opt_snapshot || "__Snapshot";          $RServ::quiet = 0;
50            no warnings 'vars';
51  if (defined($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);  
52  }  }
53    
54  my $master = $ARGV[0] || "master";  my $master = $ARGV[0] || "master";
55  my $server = 0;  my $slave = $ARGV[1] || "slave";
56    
57  my $minfo = "dbname=$master";  my $minfo = "dbname=$master";
58  $minfo = "$minfo host=$opt_host" if (defined($opt_host));  $minfo = "$minfo host=$masterhost" if (defined($masterhost));
59  $minfo = "$minfo user=$opt_user" if (defined($opt_user));  $minfo = "$minfo port=$masterport" if (defined($masterport));
60  $minfo = "$minfo password=$opt_password" if (defined($opt_password));  $minfo = "$minfo user=$masteruser" if (defined($masteruser));
61    $minfo = "$minfo password=$masterpassword" if (defined($masterpassword));
62  my $conn = Pg::connectdb($minfo);  
63    my $sinfo = "dbname=$slave";
64    $sinfo = "$sinfo host=$slavehost" if (defined($slavehost));
65    $sinfo = "$sinfo port=$slaveport" if (defined($slaveport));
66    $sinfo = "$sinfo user=$slaveuser" if (defined($slaveuser));
67    $sinfo = "$sinfo password=$slavepassword" if (defined($slavepassword));
68    
69    my $mconn = Pg::connectdb($minfo);
70    if ($mconn->status != Pg::PGRES_CONNECTION_OK) {
71        print STDERR "Failed opening $minfo\n";
72        exit 1;
73    }
74    my $sconn = Pg::connectdb($sinfo);
75    if ($sconn->status != Pg::PGRES_CONNECTION_OK) {
76        print STDERR "Failed opening $minfo\n";
77        exit 1;
78    }
79    
80  my $outf = new IO::File;  my $outf;
81  $outf = STDOUT;  if (defined($snapshot)) {
82        $outf = new IO::File;    
83        $outf->open("> $snapshot");
84    } else {
85        $outf = *STDOUT;
86    }
87    
88  $RServ::quiet = !$verbose;  my $hostname = defined($slavehost) ? $slavehost : hostname;
89    my $slaveId  = GetSlaveId($mconn, $slave, $hostname);
90    if (! $slaveId) {
91            print STDERR "Can't find SlaveId for db '$slave' on host $hostname. Is this database slave?\n";
92            exit 1;
93    }
94    die "Unknown SlaveId $slaveId for host $hostname" if ($slaveId < 0);
95    
96  $res = PrepareSnapshot ($conn, $outf, $server);  my $res = PrepareSnapshot ($mconn, $sconn, $outf, $mserver, $slaveId);
97    
98  if ($res == 0)  if ($res == 0)
99  {  {
100          printf STDERR "Sync-ed\n";      printf STDERR "Sync-ed\n";
101          exit(0);      exit(0);
102  }  }
103  if ($res > 0)  if ($res > 0)
104  {  {
105          printf STDERR "Snapshot dumped to STDOUT\n";      printf STDERR "Snapshot dumped.\n";
106          exit(0);      exit(0);
107  }  }
108    
109  printf STDERR "ERROR\n";  printf STDERR "ERROR\n";
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