/[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!
ViewVC logotype

Diff of /bin/Replicate

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

revision 1.3 by dpavlin, Tue Aug 5 09:52:36 2003 UTC revision 1.18 by dpavlin, Sun Nov 2 21:07:14 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 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;
 use Sys::Hostname;  
18    
19  $| = 1;  $| = 1;
20    
21  $result = GetOptions("debug!", "verbose!", "help", "snapshot=s",  #my ($debug,$verbose) = (0,0);
22                       "masterhost=s", "slavehost=s", "host=s",  my ($help,$masterhost,$masterport,$masteruser,$masterpassword,
23                       "masteruser=s", "slaveuser=s", "user=s",          $slavehost,$slaveport,$slaveuser,$slavepassword);
24                       "masterpassword=s", "slavepassword=s", "password=s");  my $snapshot = ".__Snapshot";
25    my $multimaster = 0;
26  my $debug = $opt_debug || 0;  
27  my $verbose = $opt_verbose || 0;  my $result = GetOptions(
28  my $snapshot = $opt_snapshot || ".__Snapshot";          "debug!" => \$debug, "verbose!" => \$verbose, "help" => \$help,
29  $snapshot .= '.' . $$;          "masterhost=s" => \$masterhost, "masterport=i" => \$masterport,
30            "masteruser=s" => \$masteruser, "masterpassword=s" => \$masterpassword,
31  if (defined($opt_help) || (scalar(@ARGV) < 2)) {          "slavehost=s" => \$slavehost, "slaveport=i" => \$slaveport,
32      print "Usage: $0 --snapshot=file --host=name --user=name --password=string masterdb slavedb\n";          "slaveuser=s" => \$slaveuser, "slavepassword=s" => \$slavepassword,
33      print "\t--masterhost=name --masteruser=name --masterpassword=string\n";          "snapshot=s" => \$snapshot,
34      print "\t--slavehost=name --slaveuser=name --slavepassword=string\n";          "multimaster" => \$multimaster,
35            );
36    
37    if (defined($help) || (scalar(@ARGV) < 2)) {
38        print "Usage: $0 [options] masterdb slavedb
39    Options:
40            --masterhost=hostname --masterport=port
41            --masteruser=username --masterpassword=string
42            --snapshot=snapshot
43            [--masterserver=master_number]
44    ";
45      exit ((scalar(@ARGV) < 2)? 1:0);      exit ((scalar(@ARGV) < 2)? 1:0);
46  }  }
47    
48    $snapshot .= '.' . $$;
49    
50    $RServ::quiet = !$verbose;
51    #if ($debug) {
52    #print "## q:$RServ::quiet v:$RServ::verbose d:$RServ::debug\n";
53    #       $RServ::quiet = 0;
54    #       no warnings 'vars';
55    #       $RServ::debug = $debug;
56    #print "## q:$RServ::quiet v:$RServ::verbose d:$RServ::debug\n";
57    #}
58    
59  my $master = $ARGV[0] || "master";  my $master = $ARGV[0] || "master";
60  my $slave = $ARGV[1] || "slave";  my $slave = $ARGV[1] || "slave";
61    my $tables = $#ARGV < 2 ? undef : { map {($_, undef)} @ARGV[2..$#ARGV] };
 $masterhost = $opt_masterhost || hostname;  
 $slavehost = $opt_slavehost || hostname;  
62    
63  # first, let's check if a instance is alrealy running  # first, let's check if a instance is alrealy running
64    
65  $str = $master.'@'.$masterhost.':'.$slave.'@'.$slavehost;  my $str = $master;
66    $str .= '@'.$masterhost if (defined($masterhost));
67    $str .= ':'.$slave;
68    $str .= '@'.$slavehost if (defined($slavehost));
69  my $fname = "/tmp/.lock_rserv-$str";  my $fname = "/tmp/.lock_rserv-$str";
70  if (-e $fname) {  if (-e $fname) {
71      print STDERR "rServ is already running for $str. Remove $fname to override this.\n";          open(PID,$fname) || die "can't open pid file '$fname'";
72      exit(1);          my $pid = <PID>; chomp($pid);
73            close(PID);
74            open(PS,"ps ax |") || die "can't start ps to check for running rServ with pid $pid\n";
75            my $is_running = 0;
76            while(<PS>) {
77                    chomp;
78                    $is_running = 1 if (/^\s*$pid\s/);
79            }
80            close(PS);
81            if ($is_running) {
82                    print STDERR "rServ [$pid] is already running for $str. Remove $fname to override this.\n";
83                    exit(1);
84            } else {
85                    print STDERR "found stale pid file, but no running rServ [$pid], overriding.\n";
86            }
87  }  }
88  open ARQ, ">$fname" || die "Cannot open $fname: $!\n";  open ARQ, ">$fname" || die "Cannot open $fname: $!\n";
89  print ARQ "$$\n";  print ARQ "$$\n";
90  close ARQ;  close ARQ;
91    
92  my $minfo = "dbname=$master";  $SIG{__DIE__} = \&mydie;
93  $minfo = "$minfo host=$opt_masterhost" if (defined($opt_masterhost));  sub mydie {
94  $minfo = "$minfo user=$opt_masteruser" if (defined($opt_masteruser));          unlink $fname;
95  $minfo = "$minfo password=$opt_masterpassword" if (defined($opt_masterpassword));          print @_;
96  my $sinfo = "dbname=$slave";          exit 1;
97  $sinfo = "$sinfo host=$opt_slavehost" if (defined($opt_slavehost));  }
98  $sinfo = "$sinfo user=$opt_slaveuser" if (defined($opt_slaveuser));  
99  $sinfo = "$sinfo password=$opt_slavepassword" if (defined($opt_slavepassword));  my $minfo = MkInfo($master,$masterhost,$masterport,$masteruser,$masterpassword);
100    my $sinfo = MkInfo($slave,$slavehost,$slaveport,$slaveuser,$slavepassword);
101    
102  print "Master connection is $minfo\n" if ($debug);  print "Master connection is $minfo\n" if ($debug);
103  print "Slave connection is $sinfo\n" if ($debug);  print "Slave connection is $sinfo\n" if ($debug);
104    
105  my $mconn = Pg::connectdb($minfo);  my $mconn = Connect($minfo);
106  if ($mconn->status != PGRES_CONNECTION_OK) {  my $sconn = Connect($sinfo);
107      print STDERR "Failed opening $minfo\n";  
108      unlink $fname;  $slavehost = 'localhost' if (! $slavehost);
109      exit 1;  $masterhost = 'localhost' if (! $masterhost);
110  }  
111  my $sconn = Pg::connectdb($sinfo);  my $slaveId = GetServerId($mconn, $slave, $slavehost);
112  if ($sconn->status != PGRES_CONNECTION_OK) {  
113      print STDERR "Failed opening $sinfo\n";  die "\n>>>>>>>>>>>>> ERROR: Can't GetServerId for $sinfo\n" if (! defined($slaveId));
114    
115    if ($slaveId < 0) {
116      unlink $fname;      unlink $fname;
117      exit 1;      die "\n>>>>>>>>>>>>> ERROR: GetServerId returned $slaveId < 0\n";
118  }  }
119    #SyncSync($mconn, $sconn);
120    
121  my $slaveId = GetSlaveId($mconn, $slave, defined($opt_slavehost) ? $opt_slavehost : hostname);  my $masterId = GetServerId($mconn, $master, $masterhost);
122  if ($slaveId < 0) {  
123    die "\n>>>>>>>>>>>>> ERROR: Can't GetServerId for $sinfo\n" if (! defined($masterId));
124    
125    if ($masterId < 0) {
126      unlink $fname;      unlink $fname;
127      die "\n>>>>>>>>>>>>> ERROR\n";      die "\n>>>>>>>>>>>>> ERROR: GetServerId returned $masterId < 0\n";
128  }  }
129  SyncSync($mconn, $sconn);  #SyncSync($sconn, $mconn);
130    
131    print "Using snapshot file: $snapshot\n" if ($debug);
132    
133  my $outf = new IO::File;  my $outf = new IO::File;
134  open $outf, ">$snapshot";  open $outf, ">$snapshot";
135  print "\n>>>>>>>>>>>>> Prepare Snapshot\n\n" if ($verbose);  print "\n>>>>>>>>>>>>> Prepare Snapshot\n\n" if ($verbose);
136  $res = PrepareSnapshot($mconn, $sconn, $outf, $slaveId);  print "master id: $masterId slave id: $slaveId\n" if ($debug);
137    #my $res = PrepareSnapshot($mconn, $sconn, $outf, $masterId, $slaveId, $multimaster, $tables);
138    my $res = PrepareSnapshot($mconn, $sconn, $outf, $masterId, $slaveId, $multimaster);
139  close $outf;  close $outf;
140  if ($res < 0) {  if ($res < 0) {
141      unlink $fname;      unlink $fname;
# Line 102  if ($res == 0) Line 152  if ($res == 0)
152  my $inpf = new IO::File;  my $inpf = new IO::File;
153  open $inpf, "<$snapshot";  open $inpf, "<$snapshot";
154  print "\n>>>>>>>>>>>>> Apply Snapshot\n\n" if ($verbose);  print "\n>>>>>>>>>>>>> Apply Snapshot\n\n" if ($verbose);
155  $res = ApplySnapshot($sconn, $inpf);  #$res = ApplySnapshot($sconn, $inpf, $multimaster, $tables);
156    $res = ApplySnapshot($sconn, $inpf, $multimaster);
157  close $inpf;  close $inpf;
158  if ($res < 0) {  if ($res < 0) {
159      unlink $fname;      unlink $fname;
# Line 127  sub SyncSync Line 178  sub SyncSync
178    
179      print "\n>>>>>>>>>>>>> Sync SyncID\n\n" if ($verbose);      print "\n>>>>>>>>>>>>> Sync SyncID\n\n" if ($verbose);
180      print "Get last SyncID from Slave DB\n" if ($verbose);      print "Get last SyncID from Slave DB\n" if ($verbose);
181      $syncid = GetSyncID($sconn);      my $syncid = GetSyncID($sconn);
182      if ($syncid > 0)      if ($syncid && $syncid > 0)
183      {      {
184          print "Last SyncID applied: $syncid\n" if ($verbose);          print "Last SyncID applied: $syncid\n" if ($verbose);
185          print "Sync SyncID\n" if ($verbose);          print "Sync SyncID\n" if ($verbose);
Legend:
Removed from v.1.3  
changed lines
  Added in v.1.18
  ViewVC Help
Powered by ViewVC 1.1.26