Fri Oct 27 08:03:09 PDT 2006
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Log Message: ----------- In 1.2, listen paths are generated automatically, so there is no need for the altperl scripts to generate them. Tags: ---- REL_1_2_STABLE Modified Files: -------------- slony1-engine/tools/altperl: slonik_init_cluster.pl (r1.1 -> r1.1.4.1) -------------- next part -------------- Index: slonik_init_cluster.pl =================================================================== RCS file: /usr/local/cvsroot/slony1/slony1-engine/tools/altperl/slonik_init_cluster.pl,v retrieving revision 1.1 retrieving revision 1.1.4.1 diff -Ltools/altperl/slonik_init_cluster.pl -Ltools/altperl/slonik_init_cluster.pl -u -w -r1.1 -r1.1.4.1 --- tools/altperl/slonik_init_cluster.pl +++ tools/altperl/slonik_init_cluster.pl @@ -52,11 +52,6 @@ # STORE PATH print SLONIK "\n# STORE PATH\n"; -my @COST; -my @VIA; -my @PATH; -generate_listen_paths(); - print SLONIK " echo 'Next: configure paths for each node/origin';\n"; foreach my $nodea (@NODES) { my $dsna = $DSN[$nodea]; @@ -77,152 +72,9 @@ } } -# STORE LISTEN -print SLONIK "\n# STORE LISTEN\n"; -foreach my $origin (@NODES) { - my $dsna = $DSN[$origin]; - foreach my $receiver (@NODES) { - if ($origin != $receiver) { - my $provider = $VIA[$origin][$receiver]; - print SLONIK " store listen (origin = $origin, receiver = $receiver, provider = $provider);\n"; - } - } -} print SLONIK " echo 'Replication nodes prepared';\n"; print SLONIK " echo 'Please start a slon replication daemon for each node';\n"; close SLONIK; run_slonik_script($FILE); -report_on_paths(); - -sub generate_listen_paths { - my $infinity = 10000000; # Initial costs are all infinite - foreach my $node1 (@NODES) { - foreach my $node2 (@NODES) { - $COST[$node1][$node2] = $infinity; - } - } - - # Initialize paths between parents and children, and based on them, - # generate initial seeding of listener paths, @VIA - - foreach my $node1 (@NODES) { - $COST[$node1][$node1] = 0; - $VIA[$node1][$node1] = 0; - foreach my $node2 (@NODES) { - if ($node2 != $node1) { - if ((not ($PARENT[$node1] or $PARENT[$node2])) or - ($PARENT[$node1] and $PARENT[$node1] == $node2) or - ($PARENT[$node2] and $PARENT[$node2] == $node1)) { - $PATH[$node1][$node2] = 1; - $PATH[$node2][$node1] = 1; - # Set up a cost 1 path between them - # Parent to child - $COST[$node1][$node2] = 1; - $VIA[$node1][$node2] = $node1; - # Child to parent - $COST[$node2][$node1] = 1; - $VIA[$node2][$node1] = $node2; - } - } - } - } - - # Now, update the listener paths... - # 4 level nested iteration: - # 1 while not done, do - # 2 for each node, node1 - # 3 for each node, node2, where node2 <> node1, where we don't - # yet have a listener path - # 4 for each node node3 (<> node1 or node2), - # consider introducing the listener path: - # node1 to node2 then node2 to node3 - # In concept, it's an O(n^4) algorithm; since the number of nodes, n, - # is not likely to get particularly large, it's not worth tuning - # further. - $didwork = "yes"; - while ($didwork eq "yes") { - $didwork = "no"; - foreach my $node1 (@NODES) { - foreach my $node3 (@NODES) { - if (($VIA[$node3][$node1] == 0) && ($node3 != $node1)) { - foreach my $node2 (@NODES) { - if ($PATH[$node1][$node2] && ($VIA[$node2][$node3] != 0) && ($node2 != $node3) && ($node2 != $node1)) { - # Consider introducing a path from n1 to n2 then n2 to n3 - # as a cheaper alternative to going direct from n1 to n3 - my $oldcost = $COST[$node3][$node1]; - my $newcost = $COST[$node1][$node2] + $COST[$node2][$node3]; - if ($newcost < $oldcost) { - $didwork = "yes"; - # So we go via node 2 - $VIA[$node3][$node1] = $node2; - $COST[$node3][$node1] = $newcost; - $VIA[$node1][$node3] = $node2; - $COST[$node1][$node3] = $newcost; - } - } - } - } - } - } - } -} - -sub report_on_paths { - print "# Configuration Summary:\n"; - print "#\n"; - print "# COST\n"; - print "# "; - foreach my $node2 (@NODES) { - printf "| %3d ", $node2; - } - print "|\n# "; - print ("-----+" x (scalar(@NODES) + 1)); - print "\n"; - foreach my $node1 (@NODES) { - printf "# %3d ", $node1; - foreach my $node2 (@NODES) { - if ($COST[$node2][$node1] == $infinity) { - printf "| inf "; - } else { - printf "|%4d ", $COST[$node2][$node1]; - } - } - print "|\n"; - } - print "# \n"; - print "# VIA\n"; - print "# "; - foreach my $node2 (@NODES) { - printf "| %3d ", $node2; - } - print "|\n# "; - print ("-----+" x (scalar(@NODES) + 1)); - print "\n"; - foreach my $node1 (@NODES) { - printf "# %3d ", $node1; - foreach my $node2 (@NODES) { - printf "|%4d ", $VIA[$node2][$node1]; - } - print "|\n"; - } - - print "# \n"; - print "# PATHS\n"; - print "# "; - foreach my $node2 (@NODES) { - printf "| %3d ", $node2; - } - print "|\n# "; - print ("-----+" x (scalar(@NODES) + 1)); - print "\n"; - foreach my $node1 (@NODES) { - printf "# %3d ", $node1; - foreach my $node2 (@NODES) { - printf "|%4d ", $PATH[$node2][$node1]; - } - print "|\n"; - } - print "\n"; -}
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