/[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 1.10 by dpavlin, Thu Oct 30 23:01:07 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    
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    
26    my $result = GetOptions(
27            "debug!" => \$debug, "verbose!" => \$verbose, "help" => \$help,
28            "masterhost=s" => \$masterhost, "masterport=i" => \$masterport,
29            "masteruser=s" => \$masteruser, "masterpassword=s" => \$masterpassword,
30            "snapshot=s" => \$snapshot,
31            );
32    
33    if (defined($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  my $debug = $opt_debug || 0;  $RServ::quiet = !$verbose;
44  my $verbose = $opt_verbose || 0;  if ($debug) {
45  my $snapshot = $opt_snapshot || "__Snapshot";          $RServ::quiet = 0;
46            no warnings 'vars';
47  if (defined($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);  
48  }  }
49    
50  my $master = $ARGV[0] || "master";  my $master = $ARGV[0] || "master";
51  my $server = 0;  my $slave = $ARGV[1] || "slave";
52    
53  my $minfo = "dbname=$master";  my $minfo = "dbname=$master";
54  $minfo = "$minfo host=$opt_host" if (defined($opt_host));  $minfo = "$minfo host=$masterhost" if (defined($masterhost));
55  $minfo = "$minfo user=$opt_user" if (defined($opt_user));  $minfo = "$minfo port=$masterport" if (defined($masterport));
56  $minfo = "$minfo password=$opt_password" if (defined($opt_password));  $minfo = "$minfo user=$masteruser" if (defined($masteruser));
57    $minfo = "$minfo password=$masterpassword" if (defined($masterpassword));
58  my $conn = Pg::connectdb($minfo);  
59    my $sinfo = "dbname=$slave";
60    $sinfo = "$sinfo host=$slavehost" if (defined($slavehost));
61    $sinfo = "$sinfo port=$slaveport" if (defined($slaveport));
62    $sinfo = "$sinfo user=$slaveuser" if (defined($slaveuser));
63    $sinfo = "$sinfo password=$slavepassword" if (defined($slavepassword));
64    
65    my $mconn = Pg::connectdb($minfo);
66    if ($mconn->status != Pg::PGRES_CONNECTION_OK) {
67        print STDERR "Failed opening $minfo\n";
68        exit 1;
69    }
70    my $sconn = Pg::connectdb($sinfo);
71    if ($sconn->status != Pg::PGRES_CONNECTION_OK) {
72        print STDERR "Failed opening $minfo\n";
73        exit 1;
74    }
75    
76  my $outf = new IO::File;  my $outf;
77  $outf = STDOUT;  if (defined($snapshot)) {
78        $outf = new IO::File;    
79        $outf->open("> $snapshot");
80    } else {
81        $outf = *STDOUT;
82    }
83    
84  $RServ::quiet = !$verbose;  $slavehost = 'localhost' if (! $slavehost);
85    my $slaveId  = GetServerId($mconn, $slave, $slavehost);
86    if (! defined($slaveId)) {
87            print STDERR "Can't find SlaveId for db '$slave' on host $slavehost. Is this database slave?\n";
88            exit 1;
89    }
90    die "Unknown SlaveId $slaveId for host $slavehost" if ($slaveId < 0);
91    
92  $res = PrepareSnapshot ($conn, $outf, $server);  $masterhost = 'localhost' if (! $masterhost);
93    my $masterId  = GetServerId($mconn, $master, $masterhost);
94    if (! defined($masterId)) {
95            print STDERR "Can't find masterId for db '$master' on host $masterhost. Is this database master?\n";
96            exit 1;
97    }
98    die "Unknown masterId $masterId for host $masterhost" if ($masterId < 0);
99    my $res = PrepareSnapshot ($mconn, $sconn, $outf, $masterId, $slaveId);
100    
101  if ($res == 0)  if ($res == 0)
102  {  {
103          printf STDERR "Sync-ed\n";      printf STDERR "Sync-ed\n";
104          exit(0);      exit(0);
105  }  }
106  if ($res > 0)  if ($res > 0)
107  {  {
108          printf STDERR "Snapshot dumped to STDOUT\n";      printf STDERR "Snapshot dumped.\n";
109          exit(0);      exit(0);
110  }  }
111    
112  printf STDERR "ERROR\n";  printf STDERR "ERROR\n";
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