/usr/share/doc/slony1-2-bin/examples/test_slony_replication.pl is in slony1-2-bin 2.2.3-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 | #!/usr/bin/perl
#
# Christopher Browne
# Copyright 2004-2009
# Afilias Canada
# This script, given DSN parameters to access a Slony-I cluster,
# submits insert, update, and delete requests and sees how they
# propagate through the system.
use Pg;
use Getopt::Long;
#use strict;
my $sleep_seconds = 4;
my $goodopts = GetOptions("help", "database=s", "host=s", "user=s", "cluster=s",
"password=s", "port=s", "set=s", "finalquery=s");
if (defined($opt_help)) {
show_usage();
}
my ($database,$user, $port, $cluster, $host, $password, $set, $finalquery);
$database = $opt_database if (defined($opt_database));
$port = 5432;
$port = $opt_port if (defined($opt_port));
$user = $opt_user if (defined($opt_user));
$password = $opt_password if (defined($opt_password));
$host = $opt_host if (defined($opt_host));
$cluster = $opt_cluster if (defined($opt_cluster));
$set = 1;
$set = $opt_set if (defined($opt_set));
$finalquery = $opt_finalquery if (defined($opt_finalquery));
require 'log.pm';
initialize_flog($cluster);
#DBI: my $initialDSN = "dbi:Pg:dbname=$database;host=$host;port=$port";
my $initialDSN = "dbname=$database host=$host port=$port";
$initialDSN = $initialDSN . " password=$password" if defined($opt_password);
print "DSN: $initialDSN\n";
# DBI: my $dbh = DBI->connect($initialDSN, $user, $password,
# {RaiseError => 0, PrintError => 0, AutoCommit => 1});
# die "connect: $DBI::errstr" if ( !defined($dbh) || $DBI::err );
my $dbh = Pg::connectdb($initialDSN);
# Query to find the "master" node
my $masterquery = qq{
select sub_provider
from "_$cluster".sl_subscribe s1
where not exists (select * from "_$cluster".sl_subscribe s2
where s2.sub_receiver = s1.sub_provider and
s1.sub_set = $set and s2.sub_set = $set and
s1.sub_active = 't' and s2.sub_active = 't')
and s1.sub_set = $set
group by sub_provider;
};
my $tq = $dbh->exec($masterquery);
#print "Rummage for master - $masterquery\n";
my $masternode;
while (my @row = $tq->fetchrow) {
($masternode) = @row;
print "Found master: $masternode\n";
}
print "Rummage for DSNs\n";
# Query to find live DSNs
my $dsnsquery =
qq{
select p.pa_server, p.pa_conninfo
from "_$cluster".sl_path p
where exists (select * from "_$cluster".sl_subscribe s where
s.sub_set = $set and
(s.sub_provider = p.pa_server or s.sub_receiver = p.pa_server) and
sub_active = 't')
group by pa_server, pa_conninfo;
};
print "Query:\n$dsnsquery\n";
$tq = $dbh->exec($dsnsquery);
my %DSN;
while (my @row = $tq->fetchrow) {
my ($node, $dsn) = @row;
if (($node == $masternode) || check_node_for_subscription($node, $dsn)) {
$DSN{$node} = $dsn;
print "DSN[$node] = $dsn\n";
} else {
print "Skip node $node / DSN:$DSN - not yet subscribed\n";
}
}
#$tq->finish();
my ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime(time);
my $time_date = sprintf ("%d-%.2d-%.2d %.2d:%.2d:%.2d", $year+1900, $mon+1, $mday, $hour, $min, $sec);
my $insert_text = "INSERT Replication Test";
my $insert_query = "insert into slony_test (description, mod_date) values ('$insert_text', '$time_date');";
submit_to_master($masternode, $insert_query, 1);
sleep $sleep_seconds;
my $select_query = "select description, mod_date from slony_test where mod_date = '$time_date' and description = '$insert_text'";
foreach my $node (keys %DSN) {
if ($node != $masternode) {
my $result=submit_to_slave($node, $select_query, 1);
}
}
my $update_text = "UPDATE Replication Test";
my $update_qry = "update slony_test set description = '$update_text' where description = '$insert_text' and mod_date = '$time_date'";
submit_to_master($masternode, $update_qry, 1);
sleep $sleep_seconds;
$select_query = "select description, mod_date from slony_test where mod_date = '$time_date' and description = '$update_text'";
foreach my $node (keys %DSN) {
if ($node != $masternode) {
my $result=submit_to_slave($node, $select_query, 1);
find_slave_backwardness($node);
}
}
# We delete old data...
my $delete_qry = "delete from slony_test where mod_date < now() - '7 days'::interval;";
submit_to_master($masternode, $delete_qry, -1);
finalize_flog($cluster);
sub submit_to_master {
my ($node, $query, $expected_count) = @_;
my $dsn = $DSN{$node};
if ($dsn =~ /password=/) {
# got a password
} else {
$dsn .= " password=$password";
}
print "Connecting to master node $node - DSN:[$dsn]\n";
my $master = Pg::connectdb($dsn);
my $status_conn = $master->status;
if ($status_conn ne PGRES_CONNECTION_OK) {
alog($source, "", "Master connection Query failed - " . $master->errorMessage, $status_conn);
report_failed_conn($conn_info);
return -1;
}
my $result = $master->exec($query);
if ($expected_count < 0) {
print "Final query to master\n";
if (defined($opt_finalquery)) {
my $lastlogquery = $opt_finalquery;
my $result = $master->exec($lastlogquery);
my @row = $result ->fetchrow;
my ($name, $creation) = @row;
log_fact($cluster, "Replication for Cluster: [$cluster] Node: [$node] Behind by: [00:00:00] Last Log:[$name] Created: [$creation]");
} else {
log_fact($cluster, "Replication for Cluster: [$cluster] Node: [$node] Behind by: [00:00:00]");
}
} elsif ($result->ntuples != $expected_count) {
alog($source, "", "Master $query failed - unexpected tuple count", $result->cmdTuples);
return -2;
} else {
alog($source, "", "Master $query succeeded", 0);
return 0;
}
}
sub find_slave_backwardness {
my ($node) = @_;
my $dsn = $DSN{$node};
if ($dsn =~ /password=/) {
# got a password
} else {
$dsn .= " password=$password";
}
print "Connecting to slave node $node - DSN:[$dsn]\n";
my $slave = Pg::connectdb($dsn);
my $status_conn = $slave->status;
if ($status_conn ne PGRES_CONNECTION_OK) {
alog($source, $dest, "Connection Query failed!", -1);
return "Connection Failed";
}
my $behindnessquery = "select coalesce( date_trunc('seconds', now() - max(mod_date)), '999999h'::interval) from slony_test;";
my $result = $slave->exec($behindnessquery);
if ($result->resultStatus != 2) {
alog($source, $dest, "Slave query $query failed", $result->resultStatus);
report_failed_conn($conn_info);
log_fact($cluster, "Replication Test Failed: Cluster: [$cluster] Node: [$node]");
return "Query Failed";
} else {
my $age;
while (my @row = $result ->fetchrow) {
($age) = @row;
}
if (defined($opt_finalquery)) {
my $lastlogquery = $opt_finalquery;
my $result = $slave->exec($lastlogquery);
while (my @row = $result ->fetchrow) {
my ($name, $creation) = @row;
log_fact($cluster, "Replication for Cluster: [$cluster] Node: [$node] Behind by: [$age] Last Log:[$name] Created: [$creation]");
return;
}
} else {
log_fact($cluster, "Replication for Cluster: [$cluster] Node: [$node] Behind by: [$age]");
return;
}
}
}
sub submit_to_slave {
my ($node, $query, $expect_count)=@_;
my $dsn = $DSN{$node};
if ($dsn =~ /password=/) {
# got a password
} else {
$dsn .= " password=$password";
}
print "Connecting to slave node $node - DSN:[$dsn]\n";
my $slave = Pg::connectdb($dsn);
my $status_conn = $slave->status;
if ($status_conn ne PGRES_CONNECTION_OK) {
alog($source, $dest, "Connection Query failed!", -1);
return "Connection Failed";
}
my $result = $slave->exec($query);
if ($result->resultStatus != 2) {
alog($source, $dest, "Slave query $query failed", $result->resultStatus);
report_failed_conn($conn_info);
return "Query Failed";
} elsif ($result->ntuples != $expect_count) {
alog($source, $dest, "Slave query failed - $query - slave is behind master", -3);
# This indicates that the slave is behind - issue message!
return "Slave Behind";
} else {
alog($source, $dest, "Query $query succeeded", 0);
return "OK";
}
}
sub check_node_for_subscription {
my ($node, $dsn) = @_;
if ($dsn =~ /password=/) {
# got a password
} else {
$dsn .= " password=$password";
}
my $slave = Pg::connectdb($dsn);
my $status_conn = $slave->status;
if ($status_conn eq PGRES_CONNECTION_BAD) {
print "Status: PGRES_CONNECTION_BAD\n";
return;
}
my $livequery = qq{ select * from "_$cluster".sl_subscribe s1 where sub_set = $set and sub_receiver = $node and sub_active;};
print "Query: $livequery\n";
my $result = $slave->exec($livequery);
while (my @row = $result->fetchrow) {
print "Found live set!\n";
return 1;
}
print "No live set found\n";
}
sub report_failed_conn {
my ($ci) = @_;
$ci =~ s/password=.*$//g;
print "Failure - connection to $ci\n";
}
sub show_usage {
my ($inerr) = @_;
if ($inerr) {
chomp $inerr;
print $inerr, "\n";
}
die "$0 --host --database --user --cluster --port=integer --password --set=integer --finalquery=SQLQUERY";
}
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