/[rserv]/bin/Replicate
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 1.5 by dpavlin, Tue Aug 5 21:10:28 2003 UTC revision 1.6 by dpavlin, Tue Aug 5 21:41:25 2003 UTC
# Line 1  Line 1 
1  #!/usr/bin/perl  #!/usr/bin/perl -w
2  # Replicate  # Replicate
3  # Vadim Mikheev, (c) 2000, PostgreSQL Inc.  # Vadim Mikheev, (c) 2000, PostgreSQL Inc.
4    
# Line 11  BEGIN { Line 11  BEGIN {
11          unshift(@INC, "$basedir/../share");          unshift(@INC, "$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;
# Line 18  use Sys::Hostname; Line 19  use Sys::Hostname;
19    
20  $| = 1;  $| = 1;
21    
22  $result = GetOptions("debug!", "verbose!", "help", "snapshot=s",  my ($debug,$verbose) = (0,0);
23                       "masterhost=s", "slavehost=s",  my ($help,$masterhost,$masterport,$masteruser,$masterpassword,
24                       "masteruser=s", "slaveuser=s",          $slavehost,$slaveport,$slaveuser,$slavepassword);
25                       "masterpassword=s", "slavepassword=s",  my $snapshot = ".__Snapshot";
26                       "masterport=i", "slaveport=i"  
27                       );  my $result = GetOptions(
28            "debug!" => \$debug, "verbose!" => \$verbose, "help" => \$help,
29  my $debug = $opt_debug || 0;          "masterhost=s" => \$masterhost, "masterport=i" => \$masterport,
30  my $verbose = $opt_verbose || 0;          "masteruser=s" => \$masteruser, "masterpassword=s" => \$masterpassword,
31  my $snapshot = $opt_snapshot || ".__Snapshot";          "snapshot=s" => \$snapshot,
32            );
33    
34    if (defined($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  $snapshot .= '.' . $$;  $snapshot .= '.' . $$;
45    
46  if (defined($opt_help) || (scalar(@ARGV) < 2)) {  $RServ::quiet = !$verbose;
47      print "Usage: $0 --snapshot=file masterdb slavedb\n";  if ($debug) {
48      print "\t--masterhost=name --masterport=port\n";          $RServ::quiet = 0;
49      print "\t--masteruser=name --masterpassword=string\n";          no warnings 'vars';
50      print "\t--slavehost=name --slaveport=port\n";          $RServ::debug = $debug;
     print "\t--slaveuser=name --slavepassword=string\n";  
     exit ((scalar(@ARGV) < 2)? 1:0);  
51  }  }
52    
53  my $master = $ARGV[0] || "master";  my $master = $ARGV[0] || "master";
54  my $slave = $ARGV[1] || "slave";  my $slave = $ARGV[1] || "slave";
55    
 $masterhost = $opt_masterhost || hostname;  
 $slavehost = $opt_slavehost || hostname;  
   
56  # first, let's check if a instance is alrealy running  # first, let's check if a instance is alrealy running
57    
58  $str = $master.'@'.$masterhost.':'.$slave.'@'.$slavehost;  my $str = $master.'@'.$masterhost.':'.$slave.'@'.$slavehost;
59  my $fname = "/tmp/.lock_rserv-$str";  my $fname = "/tmp/.lock_rserv-$str";
60  if (-e $fname) {  if (-e $fname) {
61      print STDERR "rServ is already running for $str. Remove $fname to override this.\n";      print STDERR "rServ is already running for $str. Remove $fname to override this.\n";
# Line 58  print ARQ "$$\n"; Line 66  print ARQ "$$\n";
66  close ARQ;  close ARQ;
67    
68  my $minfo = "dbname=$master";  my $minfo = "dbname=$master";
69  $minfo = "$minfo host=$opt_masterhost" if (defined($opt_masterhost));  $minfo = "$minfo host=$masterhost" if (defined($masterhost));
70  $minfo = "$minfo user=$opt_masteruser" if (defined($opt_masteruser));  $minfo = "$minfo port=$masterport" if (defined($masterport));
71  $minfo = "$minfo password=$opt_masterpassword" if (defined($opt_masterpassword));  $minfo = "$minfo user=$masteruser" if (defined($masteruser));
72  $minfo = "$minfo port=$opt_masterport" if (defined($opt_masterport));  $minfo = "$minfo password=$masterpassword" if (defined($masterpassword));
73    
74  my $sinfo = "dbname=$slave";  my $sinfo = "dbname=$slave";
75  $sinfo = "$sinfo host=$opt_slavehost" if (defined($opt_slavehost));  $sinfo = "$sinfo host=$slavehost" if (defined($slavehost));
76  $sinfo = "$sinfo user=$opt_slaveuser" if (defined($opt_slaveuser));  $sinfo = "$sinfo port=$slaveport" if (defined($slaveport));
77  $sinfo = "$sinfo password=$opt_slavepassword" if (defined($opt_slavepassword));  $sinfo = "$sinfo user=$slaveuser" if (defined($slaveuser));
78  $sinfo = "$sinfo port=$opt_slaveport" if (defined($opt_slaveport));  $sinfo = "$sinfo password=$slavepassword" if (defined($slavepassword));
79    
80  print "Master connection is $minfo\n" if ($debug);  print "Master connection is $minfo\n" if ($debug);
81  print "Slave connection is $sinfo\n" if ($debug);  print "Slave connection is $sinfo\n" if ($debug);
82    
83  my $mconn = Pg::connectdb($minfo);  my $mconn = Pg::connectdb($minfo);
84  if ($mconn->status != PGRES_CONNECTION_OK) {  if ($mconn->status != Pg::PGRES_CONNECTION_OK) {
85      print STDERR "Failed opening $minfo\n";      print STDERR "Failed opening $minfo\n";
86      unlink $fname;      unlink $fname;
87      exit 1;      exit 1;
88  }  }
89  my $sconn = Pg::connectdb($sinfo);  my $sconn = Pg::connectdb($sinfo);
90  if ($sconn->status != PGRES_CONNECTION_OK) {  if ($sconn->status != Pg::PGRES_CONNECTION_OK) {
91      print STDERR "Failed opening $sinfo\n";      print STDERR "Failed opening $sinfo\n";
92      unlink $fname;      unlink $fname;
93      exit 1;      exit 1;
94  }  }
95    
96  my $slaveId = GetSlaveId($mconn, $slave, defined($opt_slavehost) ? $opt_slavehost : hostname);  my $slaveId = GetSlaveId($mconn, $slave, defined($slavehost) ? $slavehost : hostname);
97  if ($slaveId < 0) {  if ($slaveId < 0) {
98      unlink $fname;      unlink $fname;
99      die "\n>>>>>>>>>>>>> ERROR\n";      die "\n>>>>>>>>>>>>> ERROR\n";
# Line 94  SyncSync($mconn, $sconn); Line 103  SyncSync($mconn, $sconn);
103  my $outf = new IO::File;  my $outf = new IO::File;
104  open $outf, ">$snapshot";  open $outf, ">$snapshot";
105  print "\n>>>>>>>>>>>>> Prepare Snapshot\n\n" if ($verbose);  print "\n>>>>>>>>>>>>> Prepare Snapshot\n\n" if ($verbose);
106  $res = PrepareSnapshot($mconn, $sconn, $outf, $slaveId);  my $res = PrepareSnapshot($mconn, $sconn, $outf, $slaveId);
107  close $outf;  close $outf;
108  if ($res < 0) {  if ($res < 0) {
109      unlink $fname;      unlink $fname;
# Line 136  sub SyncSync Line 145  sub SyncSync
145    
146      print "\n>>>>>>>>>>>>> Sync SyncID\n\n" if ($verbose);      print "\n>>>>>>>>>>>>> Sync SyncID\n\n" if ($verbose);
147      print "Get last SyncID from Slave DB\n" if ($verbose);      print "Get last SyncID from Slave DB\n" if ($verbose);
148      $syncid = GetSyncID($sconn);      my $syncid = GetSyncID($sconn);
149      if ($syncid > 0)      if ($syncid > 0)
150      {      {
151          print "Last SyncID applied: $syncid\n" if ($verbose);          print "Last SyncID applied: $syncid\n" if ($verbose);
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