/[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 1.9 by dpavlin, Thu Oct 30 22:51:45 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    
19  $| = 1;  $| = 1;
20    
21  $result = GetOptions("debug!", "verbose!", "help", "snapshot=s",  my ($debug,$verbose) = (0,0);
22                       "host=s", "user=s", "password=s");  my ($help,$masterhost,$masterport,$masteruser,$masterpassword,
23            $slavehost,$slaveport,$slaveuser,$slavepassword);
24    my $snapshot;
25    my $mserver = 0;
26    
27    my $result = GetOptions(
28            "debug!" => \$debug, "verbose!" => \$verbose, "help" => \$help,
29            "masterhost=s" => \$masterhost, "masterport=i" => \$masterport,
30            "masteruser=s" => \$masteruser, "masterpassword=s" => \$masterpassword,
31            "snapshot=s" => \$snapshot,
32            "masterserver=i" => \$mserver,
33            );
34    
35    if (defined($help) || (scalar(@ARGV) < 2)) {
36        print "Usage: $0 [options] masterdb slavedb
37    Options:
38            --masterhost=hostname --masterport=port
39            --masteruser=username --masterpassword=string
40            --snapshot=snapshot
41            [--masterserver=master_number]
42    ";
43        exit ((scalar(@ARGV) < 2)? 1:0);
44    }
45    
46  my $debug = $opt_debug || 0;  $RServ::quiet = !$verbose;
47  my $verbose = $opt_verbose || 0;  if ($debug) {
48  my $snapshot = $opt_snapshot || "__Snapshot";          $RServ::quiet = 0;
49            no warnings 'vars';
50  if (defined($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);  
51  }  }
52    
53  my $master = $ARGV[0] || "master";  my $master = $ARGV[0] || "master";
54  my $server = 0;  my $slave = $ARGV[1] || "slave";
55    
56  my $minfo = "dbname=$master";  my $minfo = "dbname=$master";
57  $minfo = "$minfo host=$opt_host" if (defined($opt_host));  $minfo = "$minfo host=$masterhost" if (defined($masterhost));
58  $minfo = "$minfo user=$opt_user" if (defined($opt_user));  $minfo = "$minfo port=$masterport" if (defined($masterport));
59  $minfo = "$minfo password=$opt_password" if (defined($opt_password));  $minfo = "$minfo user=$masteruser" if (defined($masteruser));
60    $minfo = "$minfo password=$masterpassword" if (defined($masterpassword));
61    
62    my $sinfo = "dbname=$slave";
63    $sinfo = "$sinfo host=$slavehost" if (defined($slavehost));
64    $sinfo = "$sinfo port=$slaveport" if (defined($slaveport));
65    $sinfo = "$sinfo user=$slaveuser" if (defined($slaveuser));
66    $sinfo = "$sinfo password=$slavepassword" if (defined($slavepassword));
67    
68    my $mconn = Pg::connectdb($minfo);
69    if ($mconn->status != Pg::PGRES_CONNECTION_OK) {
70        print STDERR "Failed opening $minfo\n";
71        exit 1;
72    }
73    my $sconn = Pg::connectdb($sinfo);
74    if ($sconn->status != Pg::PGRES_CONNECTION_OK) {
75        print STDERR "Failed opening $minfo\n";
76        exit 1;
77    }
78    
79  my $conn = Pg::connectdb($minfo);  my $outf;
80    if (defined($snapshot)) {
81        $outf = new IO::File;    
82        $outf->open("> $snapshot");
83    } else {
84        $outf = *STDOUT;
85    }
86    
87  my $outf = new IO::File;  $slavehost = 'localhost' if (! $slavehost);
88  $outf = STDOUT;  my $slaveId  = GetServerId($mconn, $slave, $slavehost);
89    if (! $slaveId) {
90            print STDERR "Can't find SlaveId for db '$slave' on host $slavehost. Is this database slave?\n";
91            exit 1;
92    }
93    die "Unknown SlaveId $slaveId for host $slavehost" if ($slaveId < 0);
94    
95  $res = PrepareSnapshot ($conn, $outf, $server);  my $res = PrepareSnapshot ($mconn, $sconn, $outf, $mserver, $slaveId);
96    
97  if ($res == 0)  if ($res == 0)
98  {  {
99          printf STDERR "Sync-ed\n";      printf STDERR "Sync-ed\n";
100          exit(0);      exit(0);
101  }  }
102  if ($res > 0)  if ($res > 0)
103  {  {
104          printf STDERR "Snapshot dumped to STDOUT\n";      printf STDERR "Snapshot dumped.\n";
105          exit(0);      exit(0);
106  }  }
107    
108  printf STDERR "ERROR\n";  printf STDERR "ERROR\n";
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