xcat-core/xCAT-server/lib/xcat/plugins/switch.pm
2012-02-19 16:09:21 +00:00

251 lines
6.7 KiB
Perl

# IBM(c) 2007 EPL license http://www.eclipse.org/legal/epl-v10.html
package xCAT_plugin::switch;
BEGIN
{
$::XCATROOT = $ENV{'XCATROOT'} ? $ENV{'XCATROOT'} : '/opt/xcat';
}
use lib "$::XCATROOT/lib/perl";
use IO::Socket;
use Data::Dumper;
use xCAT::MacMap;
use xCAT::NodeRange;
use Sys::Syslog;
use xCAT::Usage;
use Storable;
use xCAT::MellanoxIB;
my $macmap;
sub handled_commands {
$macmap = xCAT::MacMap->new();
return {
findme => 'switch',
findmac => 'switch',
rspconfig => 'nodehm:mgt',
};
}
sub preprocess_request {
my $request = shift;
if (defined $request->{_xcatpreprocessed}->[0] and $request->{_xcatpreprocessed}->[0] == 1) { return [$request]; }
my $callback=shift;
my @requests;
my $noderange = $request->{node};
my $command = $request->{command}->[0];
my $extrargs = $request->{arg};
my @exargs=($request->{arg});
if (ref($extrargs)) {
@exargs=@$extrargs;
}
if ($command eq "rspconfig") {
my $usage_string=xCAT::Usage->parseCommand($command, @exargs);
if ($usage_string) {
$callback->({data=>$usage_string});
$request = {};
return;
}
if (!$noderange) {
$usage_string=xCAT::Usage->getUsage($command);
$callback->({data=>$usage_string});
$request = {};
return;
}
#make sure all the nodes are switches
my $switchestab=xCAT::Table->new('switches',-create=>0);
my @all_switches;
my @tmp=$switchestab->getAllAttribs(('switch'));
if (defined(@tmp) && (@tmp > 0)) {
foreach(@tmp) {
my @switches_tmp=noderange($_->{switch});
if (@switches_tmp==0) { push @switches_tmp, $_->{switch}; }
foreach my $switch (@switches_tmp) {
push @all_switches, $switch;
}
}
}
#print "all switches=@all_switches\n";
my @wrong_nodes;
foreach my $node (@$noderange) {
if (! grep /^$node$/, @all_switches) {
push @wrong_nodes, $node;
}
}
if (@wrong_nodes > 0) {
my $rsp = {};
$rsp->{error}->[0] = "The following nodes are not defined in the switches table:\n @wrong_nodes.";
$callback->($rsp);
return;
}
# find service nodes for requested switch
# build an individual request for each service node
my $service = "xcat";
my $sn = xCAT::Utils->get_ServiceNode($noderange, $service, "MN");
# build each request for each service node
foreach my $snkey (keys %$sn)
{
#print "snkey=$snkey\n";
my $reqcopy = {%$request};
$reqcopy->{node} = $sn->{$snkey};
$reqcopy->{'_xcatdest'} = $snkey;
$reqcopy->{_xcatpreprocessed}->[0] = 1;
push @requests, $reqcopy;
}
return \@requests;
}
return [$request];
}
sub process_request {
my $req = shift;
my $cb = shift;
my $doreq = shift;
my $node;
my $mac = '';
if ($req->{command}->[0] eq 'findmac') {
$mac = $req->{arg}->[0];
$node = $macmap->find_mac($mac,0);
$cb->({node=>[{name=>$node,data=>$mac}]});
return;
} elsif ($req->{command}->[0] eq 'rspconfig') {
return process_switch_config($req, $cb, $doreq);
} elsif ($req->{command}->[0] eq 'findme') {
my $ip = $req->{'_xcat_clientip'};
if (defined $req->{nodetype} and $req->{nodetype}->[0] eq 'virtual') {
#Don't attempt switch discovery of a VM Guest
#TODO: in this case, we could/should find the host system
#and then ask it what node is associated with the mac
#Either way, it would be kinda weird since xCAT probably made up the mac addy
#anyway, however, complex network topology function may be aided by
#discovery working. Food for thought.
return;
}
my $arptable = `/sbin/arp -n`;
my @arpents = split /\n/,$arptable;
foreach (@arpents) {
if (m/^($ip)\s+\S+\s+(\S+)\s/) {
$mac=$2;
last;
}
}
my $firstpass=1;
if ($mac) {
$node = $macmap->find_mac($mac,$req->{cacheonly}->[0]);
$firstpass=0;
}
if (not $node) { # and $req->{checkallmacs}->[0]) {
foreach (@{$req->{mac}}) {
/.*\|.*\|([\dABCDEFabcdef:]+)(\||$)/;
$node = $macmap->find_mac($1,$firstpass);
$firstpass=0;
if ($node) { last; }
}
}
if ($node) {
my $mactab = xCAT::Table->new('mac',-create=>1);
$mactab->setNodeAttribs($node,{mac=>$mac});
$mactab->close();
#my %request = (
# command => ['makedhcp'],
# node => [$node]
#);
#$doreq->(\%request);
$req->{command}=['discovered'];
$req->{noderange} = [$node];
$doreq->($req);
%{$req}=();#Clear req structure, it's done..
undef $mactab;
} else {
#Shouldn't complain, might be blade, but how to log total failures?
}
}
}
sub process_switch_config {
my $request = shift;
my $callback=shift;
my $subreq=shift;
my $noderange = $request->{node};
my $command = $request->{command}->[0];
my $extrargs = $request->{arg};
my @exargs=($request->{arg});
if (ref($extrargs)) {
@exargs=@$extrargs;
}
my $subcommand=join(' ', @exargs);
my $argument;
($subcommand,$argument) = split(/=/,$subcommand);
if (!$subcommand) {
my $rsp = {};
$rsp->{error}->[0] = "No subcommand specified.";
$callback->($rsp);
return;
}
#decide what kind of swith it is
my $sw_types=getSwitchType($noderange); #hash {type=>[node1,node1...]}
foreach my $t (keys(%$sw_types)) {
my $nodes=$sw_types->{$t};
if (@$nodes>0) {
if ($t =~ /Mellanox/i) {
if (!$argument) {
xCAT::MellanoxIB::getConfig($nodes, $callback, $subreq, $subcommand);
} else {
xCAT::MellanoxIB::setConfig($nodes, $callback, $subreq, $subcommand, $argument);
}
} else {
my $rsp = {};
$rsp->{error}->[0] = "The following '$t' switches are unsuppored:\n@$nodes";
$callback->($rsp);
}
}
}
}
#--------------------------------------------------------------------------------
=head3 getSwitchType
It determins the swtich vendor and model for the given swith.
Arguments:
noderange-- an array ref to switches.
Returns:
a hash ref. the key is the switch type string and the value is an array ref to the swithces t
=cut
#--------------------------------------------------------------------------------
sub getSwitchType {
my $noderange=shift;
if ($noderange =~ /xCAT_plugin::switch/) {
$noderange=shift;
}
my $ret={};
my $switchestab = xCAT::Table->new('switches',-create=>1);
my $switches_hash = $switchestab->getNodesAttribs($noderange,['switchtype']);
foreach my $node (@$noderange) {
my $type="EtherNet";
if ($switches_hash) {
if ($switches_hash->{$node}-[0]) {
$type = $switches_hash->{$node}->[0]->{switchtype};
}
}
if (exists($ret->{$type})) {
$pa=$ret->{$type};
push @$pa, $node;
} else {
$ret->{$type}=[$node];
}
}
return $ret;
}
1;