1 |
#!/usr/bin/perl -w |
2 |
# SlaveInit |
3 |
# Vadim Mikheev, (c) 2000, PostgreSQL Inc. |
4 |
|
5 |
eval '(exit $?0)' && eval 'exec perl -S $0 ${1+"$@"}' |
6 |
& eval 'exec perl -S $0 $argv:q' |
7 |
if 0; |
8 |
|
9 |
use strict; |
10 |
use Pg; |
11 |
use Getopt::Long; |
12 |
use Sys::Hostname; |
13 |
|
14 |
$| = 1; |
15 |
|
16 |
my ($debug,$verbose,$quiet) = (0,0,0); |
17 |
my ($help,$masterhost,$masterport,$masteruser,$masterpassword, |
18 |
$slavehost,$slaveport,$slaveuser,$slavepassword); |
19 |
|
20 |
my $result = GetOptions( |
21 |
"debug!" => \$debug, "verbose!" => \$verbose, |
22 |
"quiet!" => \$quiet, "help" => \$help, |
23 |
"masterhost=s" => \$masterhost, "masterport=i" => \$masterport, |
24 |
"masteruser=s" => \$masteruser, "masterpassword=s" => \$masterpassword, |
25 |
"slavehost=s" => \$slavehost, "slaveport=i" => \$slaveport, |
26 |
"slaveuser=s" => \$slaveuser, "slavepassword=s" => \$slavepassword, |
27 |
); |
28 |
|
29 |
if (defined($help) || (scalar(@ARGV) < 2)) { |
30 |
print "Usage: $0 [options] masterdb slavedb |
31 |
Options: |
32 |
--masterhost=hostname --masterport=port |
33 |
--masteruser=username --masterpassword=string |
34 |
--slavehost=hostname --slaveport=port |
35 |
--slaveuser=username --slavepassword=string |
36 |
"; |
37 |
exit ((scalar(@ARGV) < 2)? 1:0); |
38 |
} |
39 |
|
40 |
my $master = $ARGV[0] || "master"; |
41 |
my $slave = $ARGV[1] || "slave"; |
42 |
|
43 |
my $minfo = MkInfo($master,$masterhost,$masterport,$masteruser,$masterpassword); |
44 |
my $sinfo = MkInfo($slave,$slavehost,$slaveport,$slaveuser,$slavepassword); |
45 |
|
46 |
sub RollbackAndQuit { |
47 |
my $conn = shift @_; |
48 |
|
49 |
print STDERR $conn->errorMessage; |
50 |
$conn->exec("ROLLBACK"); |
51 |
exit (-1); |
52 |
} |
53 |
|
54 |
# First, lets add the needed information in the slave database |
55 |
|
56 |
print("Connecting to $sinfo\n") if ($debug || $verbose); |
57 |
my $conn = Pg::connectdb($sinfo); |
58 |
if ($conn->status != PGRES_CONNECTION_OK) { |
59 |
print STDERR "Failed opening $sinfo\n"; |
60 |
exit 1; |
61 |
} |
62 |
|
63 |
$result = $conn->exec("BEGIN"); |
64 |
RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK); |
65 |
|
66 |
$result = $conn->exec("set transaction isolation level serializable"); |
67 |
RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK); |
68 |
|
69 |
$result = $conn->exec("DROP TABLE _RSERV_SLAVE_TABLES_"); |
70 |
RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK); |
71 |
|
72 |
$result = $conn->exec("DROP TABLE _RSERV_SLAVE_SYNC_"); |
73 |
RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK); |
74 |
|
75 |
$result = $conn->exec("COMMIT"); |
76 |
RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK); |
77 |
|
78 |
|
79 |
# next, let's tell the master that the slave is gone. |
80 |
|
81 |
print("Connecting to $minfo\n") if ($debug || $verbose); |
82 |
$conn = Pg::connectdb($minfo); |
83 |
if ($conn->status != PGRES_CONNECTION_OK) { |
84 |
print STDERR "Failed opening $minfo\n"; |
85 |
exit 1; |
86 |
} |
87 |
|
88 |
|
89 |
my $host = defined($slavehost) ? $slavehost : hostname; |
90 |
|
91 |
$result = $conn->exec("DELETE FROM _RSERV_SERVERS_ WHERE host='$host' AND dbase='$slave'"); |
92 |
if ($result->resultStatus ne PGRES_COMMAND_OK) { |
93 |
print STDERR $conn->errorMessage; |
94 |
exit (-1); |
95 |
} |
96 |
|
97 |
|
98 |
exit (0); |