Annotation of /bin/MasterInit

#!/usr/bin/perl -w
# MasterInit
# Vadim Mikheev, (c) 2000, PostgreSQL Inc.

eval '(exit $?0)' && eval 'exec perl -S $0 ${1+"$@"}'
    & eval 'exec perl -S $0 $argv:q'
    if 0;

use strict;
use Pg;
use Getopt::Long;

my $lib = '/usr/lib/postgresql/lib/rserv.so';

$| = 1;

my ($debug,$verbose) = (0,0);
my ($help,$masterhost,$masterport,$masteruser,$masterpassword);

my $result = GetOptions(
        "debug!" => \$debug, "verbose!" => \$verbose, "help" => \$help,
        "masterhost=s" => \$masterhost, "masterport=i" => \$masterport,
        "masteruser=s" => \$masteruser, "masterpassword=s" => \$masterpassword,
        "lib=s" => \$lib);

if (defined($help) || (scalar(@ARGV) < 1)) {
    print "Usage: $0 [options] masterdb
Options:
        --masterhost=hostname --masterport=port
        --masteruser=username --masterpassword=string
        --lib=libpath
";
    exit ((scalar(@ARGV) < 1)? 1:0);
}

my $master = $ARGV[0] || "master";

my $minfo = "dbname=$master";
$minfo = "$minfo host=$masterhost" if (defined($masterhost));
$minfo = "$minfo port=$masterport" if (defined($masterport));
$minfo = "$minfo user=$masteruser" if (defined($masteruser));
$minfo = "$minfo password=$masterpassword" if (defined($masterpassword));

sub RollbackAndQuit {
    my $conn = shift @_;

    print STDERR "Error in query: ", $conn->errorMessage;
    $conn->exec("ROLLBACK");
    exit (-1);
}

my $conn = Pg::connectdb($minfo);
if ($conn->status != PGRES_CONNECTION_OK) {
    print STDERR "Failed opening $minfo\n";
    exit 1;
}

$result = $conn->exec("BEGIN");
RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);

$result = $conn->exec("set transaction isolation level serializable");
RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);

# List of slave servers
$result = $conn->exec("create table _RSERV_SERVERS_" .
                      " (server serial primary key, host text not ".
                      "null, port int4 default 5432, dbase text not ".
                      "null, unique(host,port,dbase))");
RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);

# List of replicated tables
$result = $conn->exec("create table _RSERV_TABLES_" .
                      " (tname name not null, cname name not null, ".
                      "reloid oid primary key, key int4 not null)");
RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);

## should always call MasterDelTable
#$result = $conn->exec("CREATE RULE _rserv_deltrig_ AS ON delete to _RSERV_TABLES_ DO (DELETE FROM pg_trigger WHERE tgname='_rserv_trigger_t_' AND tgrelid=(SELECT oid FROM pg_class WHERE relname=old.tname);UPDATE pg_class SET reltriggers=reltriggers-1 WHERE relname=old.tname)");
#RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);

# Bookkeeping log for row replication   
$result = $conn->exec("create table _RSERV_LOG_" .
                      " (reloid oid REFERENCES _RSERV_TABLES_(reloid) ON ".
                      "DELETE CASCADE ON UPDATE CASCADE, logid int4 not ".
                      "null, logtime timestamp not null, insert smallint, ".
                      "update smallint, delete smallint, key text, ".
                      "CONSTRAINT only_one CHECK (insert+update+delete=1))");
RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);

# This is to speedup lookup of deleted tuples
$result = $conn->exec("create index _RSERV_LOG_INDX_DLT_ID_ on _RSERV_LOG_ ".
                      "(delete, logid) WHERE delete = 1");
RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);

# This is to speedup lookup of updated tuples
$result = $conn->exec("create index _RSERV_LOG_INDX_UPD_ID_ on _RSERV_LOG_ ".
                      "(update, logid) WHERE update = 1");
RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);

# This is to speedup lookup of insert tuples
$result = $conn->exec("create index _RSERV_LOG_INDX_INS_ID_ on _RSERV_LOG_ ".
                      "(insert, logid) WHERE insert = 1");
RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);

# This is to speedup cleanup
$result = $conn->exec("create index _RSERV_LOG_INDX_TM_ID_ on _RSERV_LOG_ ".
                      "(logtime, logid)");
RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);

# This is to speedup trigger 
$result = $conn->exec("create index _RSERV_LOG_INDX_REL_KEY_ on _RSERV_LOG_ ".
                      "(reloid, key)");
RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);

# View to help managing _rserv_log_ table
$result = $conn->exec("CREATE VIEW _RSERV_HUMAN_LOG_ AS SELECT log.logid, ".
                      "tab.tname AS table_name, tab.cname AS column_name, ".
                      "log.key AS column_value, log.insert, log.update, ".
                      "log.delete, log.logtime FROM _RSERV_LOG_ log, ".
                      "_RSERV_TABLES_ tab WHERE tab.reloid ".
                      "= log.reloid ORDER BY log.logtime");
RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);

# View to help logging daily transactions
$result = $conn->exec("CREATE VIEW _RSERV_DAILY_LOG_ AS ".
                      "SELECT count(*) AS \"# records\", ".
                      "to_char(_rserv_log_.logtime, 'YYYY-MM-DD') ".
                      "AS day FROM _rserv_log_ GROUP BY day");
RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);

# Sync point for each slave server
$result = $conn->exec("create table _RSERV_SYNC_ " .
                      "(server int REFERENCES _RSERV_SERVERS_(server) ".
                      "ON DELETE CASCADE ON UPDATE CASCADE, syncid int4 ".
                      "not null, synctime timestamp, status int4 not null,".
                      " minid int4 not null, maxid int4 not null, active text)");
RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);

$result = $conn->exec("create index _RSERV_SYNC_INDX_SRV_ID_ on _RSERV_SYNC_ ".
                      "(server, syncid)");
RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);

# Sync point reference numbers
$result = $conn->exec("create sequence _rserv_sync_seq_");
RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);

$result = $conn->exec("CREATE FUNCTION _rserv_log_() RETURNS opaque" .
                      " AS '$lib' LANGUAGE 'c'");
RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);

$result = $conn->exec("CREATE FUNCTION _rserv_sync_(int4) RETURNS int4" .
                      " AS '$lib' LANGUAGE 'c'");
RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);

$result = $conn->exec("CREATE FUNCTION _rserv_debug_(int4) RETURNS int4" .
                      " AS '$lib' LANGUAGE 'c'");
RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);

$result = $conn->exec("COMMIT");
RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);

exit (0);
1	dpavlin	1.5	#!/usr/bin/perl -w
2	dpavlin	1.1	# MasterInit
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	dpavlin	1.5	use strict;
10	dpavlin	1.1	use Pg;
11			use Getopt::Long;
12
13	dpavlin	1.5	my $lib = '/usr/lib/postgresql/lib/rserv.so';
14	dpavlin	1.3
15	dpavlin	1.1	$\| = 1;
16
17	dpavlin	1.5	my ($debug,$verbose) = (0,0);
18			my ($help,$masterhost,$masterport,$masteruser,$masterpassword);
19	dpavlin	1.1
20	dpavlin	1.5	my $result = GetOptions(
21			"debug!" => \$debug, "verbose!" => \$verbose, "help" => \$help,
22			"masterhost=s" => \$masterhost, "masterport=i" => \$masterport,
23			"masteruser=s" => \$masteruser, "masterpassword=s" => \$masterpassword,
24			"lib=s" => \$lib);
25
26			if (defined($help) \|\| (scalar(@ARGV) < 1)) {
27			print "Usage: $0 [options] masterdb
28			Options:
29			--masterhost=hostname --masterport=port
30			--masteruser=username --masterpassword=string
31			--lib=libpath
32			";
33	dpavlin	1.1	exit ((scalar(@ARGV) < 1)? 1:0);
34			}
35
36			my $master = $ARGV[0] \|\| "master";
37
38			my $minfo = "dbname=$master";
39	dpavlin	1.5	$minfo = "$minfo host=$masterhost" if (defined($masterhost));
40			$minfo = "$minfo port=$masterport" if (defined($masterport));
41			$minfo = "$minfo user=$masteruser" if (defined($masteruser));
42			$minfo = "$minfo password=$masterpassword" if (defined($masterpassword));
43	dpavlin	1.3
44	dpavlin	1.1	sub RollbackAndQuit {
45	dpavlin	1.5	my $conn = shift @_;
46	dpavlin	1.1
47			print STDERR "Error in query: ", $conn->errorMessage;
48			$conn->exec("ROLLBACK");
49			exit (-1);
50			}
51
52			my $conn = Pg::connectdb($minfo);
53			if ($conn->status != PGRES_CONNECTION_OK) {
54			print STDERR "Failed opening $minfo\n";
55			exit 1;
56			}
57
58	dpavlin	1.5	$result = $conn->exec("BEGIN");
59	dpavlin	1.1	RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);
60
61			$result = $conn->exec("set transaction isolation level serializable");
62			RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);
63
64			# List of slave servers
65			$result = $conn->exec("create table _RSERV_SERVERS_" .
66	dpavlin	1.3	" (server serial primary key, host text not ".
67			"null, port int4 default 5432, dbase text not ".
68			"null, unique(host,port,dbase))");
69	dpavlin	1.1	RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);
70
71			# List of replicated tables
72			$result = $conn->exec("create table _RSERV_TABLES_" .
73	dpavlin	1.3	" (tname name not null, cname name not null, ".
74			"reloid oid primary key, key int4 not null)");
75	dpavlin	1.1	RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);
76
77	dpavlin	1.3	## should always call MasterDelTable
78			#$result = $conn->exec("CREATE RULE _rserv_deltrig_ AS ON delete to _RSERV_TABLES_ DO (DELETE FROM pg_trigger WHERE tgname='_rserv_trigger_t_' AND tgrelid=(SELECT oid FROM pg_class WHERE relname=old.tname);UPDATE pg_class SET reltriggers=reltriggers-1 WHERE relname=old.tname)");
79			#RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);
80
81			# Bookkeeping log for row replication
82	dpavlin	1.1	$result = $conn->exec("create table _RSERV_LOG_" .
83	dpavlin	1.3	" (reloid oid REFERENCES _RSERV_TABLES_(reloid) ON ".
84			"DELETE CASCADE ON UPDATE CASCADE, logid int4 not ".
85			"null, logtime timestamp not null, insert smallint, ".
86			"update smallint, delete smallint, key text, ".
87			"CONSTRAINT only_one CHECK (insert+update+delete=1))");
88	dpavlin	1.1	RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);
89
90			# This is to speedup lookup of deleted tuples
91	dpavlin	1.3	$result = $conn->exec("create index _RSERV_LOG_INDX_DLT_ID_ on _RSERV_LOG_ ".
92			"(delete, logid) WHERE delete = 1");
93			RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);
94
95			# This is to speedup lookup of updated tuples
96			$result = $conn->exec("create index _RSERV_LOG_INDX_UPD_ID_ on _RSERV_LOG_ ".
97			"(update, logid) WHERE update = 1");
98			RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);
99
100			# This is to speedup lookup of insert tuples
101			$result = $conn->exec("create index _RSERV_LOG_INDX_INS_ID_ on _RSERV_LOG_ ".
102			"(insert, logid) WHERE insert = 1");
103	dpavlin	1.1	RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);
104
105			# This is to speedup cleanup
106	dpavlin	1.3	$result = $conn->exec("create index _RSERV_LOG_INDX_TM_ID_ on _RSERV_LOG_ ".
107			"(logtime, logid)");
108			RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);
109
110			# This is to speedup trigger
111			$result = $conn->exec("create index _RSERV_LOG_INDX_REL_KEY_ on _RSERV_LOG_ ".
112			"(reloid, key)");
113			RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);
114
115			# View to help managing _rserv_log_ table
116			$result = $conn->exec("CREATE VIEW _RSERV_HUMAN_LOG_ AS SELECT log.logid, ".
117			"tab.tname AS table_name, tab.cname AS column_name, ".
118			"log.key AS column_value, log.insert, log.update, ".
119			"log.delete, log.logtime FROM _RSERV_LOG_ log, ".
120			"_RSERV_TABLES_ tab WHERE tab.reloid ".
121			"= log.reloid ORDER BY log.logtime");
122	dpavlin	1.1	RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);
123
124	dpavlin	1.3	# View to help logging daily transactions
125			$result = $conn->exec("CREATE VIEW _RSERV_DAILY_LOG_ AS ".
126			"SELECT count(*) AS \"# records\", ".
127			"to_char(_rserv_log_.logtime, 'YYYY-MM-DD') ".
128			"AS day FROM _rserv_log_ GROUP BY day");
129	dpavlin	1.1	RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);
130
131			# Sync point for each slave server
132	dpavlin	1.3	$result = $conn->exec("create table _RSERV_SYNC_ " .
133			"(server int REFERENCES _RSERV_SERVERS_(server) ".
134			"ON DELETE CASCADE ON UPDATE CASCADE, syncid int4 ".
135			"not null, synctime timestamp, status int4 not null,".
136			" minid int4 not null, maxid int4 not null, active text)");
137	dpavlin	1.1	RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);
138
139	dpavlin	1.3	$result = $conn->exec("create index _RSERV_SYNC_INDX_SRV_ID_ on _RSERV_SYNC_ ".
140			"(server, syncid)");
141	dpavlin	1.1	RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);
142
143			# Sync point reference numbers
144			$result = $conn->exec("create sequence _rserv_sync_seq_");
145			RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);
146
147	dpavlin	1.3	$result = $conn->exec("CREATE FUNCTION _rserv_log_() RETURNS opaque" .
148			" AS '$lib' LANGUAGE 'c'");
149	dpavlin	1.1	RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);
150
151			$result = $conn->exec("CREATE FUNCTION _rserv_sync_(int4) RETURNS int4" .
152	dpavlin	1.3	" AS '$lib' LANGUAGE 'c'");
153	dpavlin	1.1	RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);
154
155			$result = $conn->exec("CREATE FUNCTION _rserv_debug_(int4) RETURNS int4" .
156	dpavlin	1.3	" AS '$lib' LANGUAGE 'c'");
157	dpavlin	1.1	RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);
158
159			$result = $conn->exec("COMMIT");
160			RollbackAndQuit($conn) if ($result->resultStatus ne PGRES_COMMAND_OK);
161
162			exit (0);