2d909fef9d
git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@5240 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd
391 lines
10 KiB
Perl
391 lines
10 KiB
Perl
package xCAT_plugin::litetree;
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use xCAT::NodeRange;
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use Data::Dumper;
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use xCAT::Utils;
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use Sys::Syslog;
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use xCAT::GlobalDef;
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use xCAT::Table;
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use Getopt::Long;
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Getopt::Long::Configure("bundling");
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Getopt::Long::Configure("pass_through");
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use strict;
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# synchonize files and directories from mulitple sources.
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# object is to return a list of files to be syncronized.
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# requesting them. By default we will do read-write files.
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my $syncdirTab = "litetree";
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my $syncfileTab = "litefile";
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my $errored = 0;
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sub handled_commands {
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# command is syncmount, syncdir is the perl module to use.
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return {
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litetree => "litetree",
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litefile => "litetree",
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ilitefile => "litetree"
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}
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}
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sub usage {
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my $command = shift;
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my $callback = shift;
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my $error = shift;
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my $msg;
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if($command eq "ilitefile"){
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$msg = "ilitefile <imagename>
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\texample:\n\tilitefile centos5.3-x86_64-compute"
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} else{
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$msg = "some general usage string";
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}
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if($error){
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$callback->({error=>[$msg],errorcode=>[$error]});
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}else{
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$callback->({info=>[$msg]});
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}
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}
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sub process_request {
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my $request = shift;
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my $callback = shift;
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my $noderange;
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my $image;
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# the request can come from node or some one running command
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# on xCAT mgmt server
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# argument could also be image...
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# if request comes from user:
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if($request->{node}){
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$noderange = $request->{node};
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# if request comes from node post script .awk file.
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}elsif($request->{'_xcat_clienthost'}){
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$noderange = $request->{'_xcat_clienthost'};
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}else{
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$callback->({error=>["Well Kemosabi, I can't figure out who you are."],errorcode=>[1]});
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return;
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}
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if(!$noderange){
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my $usage_string="Missing Noderange\n";
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$callback->({error=>[$usage_string],errorcode=>[1]});
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$request = {};
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return;
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}
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my $command = $request->{command}->[0];
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if($command eq "litetree"){
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return syncmount("dir",$request,$callback,$noderange);
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}elsif($command eq "litefile"){
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return syncmount("file",$request, $callback,$noderange);
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}elsif($command eq "ilitefile"){
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#print Dumper($request);
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unless($request->{arg}){
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usage($command, $callback,1);
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return 1;
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}
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return syncmount("image",$request, $callback,$request->{arg});
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}else{
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$callback->({error=>["error in code..."], errorcode=>[127]});
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$request = {};
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return;
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}
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}
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sub syncmount {
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my $syncType = shift;
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my $request = shift;
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my $callback = shift;
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# deterimine which node is calling this
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# then find out what directories to use.
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my $noderange = shift;
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my @nodes = @{$noderange};
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my $tab;
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if($syncType eq 'dir'){
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$tab = xCAT::Table->new($syncdirTab,-create=>1);
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}elsif($syncType =~ /file|image/ ){
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$tab = xCAT::Table->new($syncfileTab,-create=>1);
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}else{
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$callback->({error=>["error in code..."], errorcode=>[127]});
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$request = {};
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return;
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}
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my $ostab;
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my %osents;
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unless($syncType =~ /image/){
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$ostab = xCAT::Table->new('nodetype');
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%osents = %{$ostab->getNodesAttribs(\@nodes,['profile','os','arch','provmethod'])};
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}
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foreach my $node (@nodes){
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# node may be an image...
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my $image;
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my $ent;
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if($syncType !~ /image/){
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$ent = $osents{$node}->[0];
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unless($ent->{os} && $ent->{arch} && $ent->{profile}){
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$callback->({error=>["$node does not have os, arch, or profile defined in nodetype table"],errorcode=>[1]});
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$request = {};
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next;
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}
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if ((!$ent->{provmethod}) || ($ent->{provmethod} eq 'statelite') || ($ent->{provmethod} eq 'netboot') || ($ent->{provmethod} eq 'install')) {
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$image = $ent->{os} . "-" . $ent->{arch} . "-statelite-" . $ent->{profile};
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} elsif (($ent->{provmethod} ne 'netboot') && ($ent->{provmethod} ne 'install')) {
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$image=$ent->{provmethod};
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}
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} else {
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$image=$node;
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}
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my $fData = getNodeData($syncType,$node,$image,$tab,$callback);
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# now we go through each directory and search for the file.
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showSync($syncType,$callback, $node, $fData);
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}
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}
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# In most cases the syncdir will be on the management node so
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# want to make sure its not us before we mount things.
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sub showSync {
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my $syncType = shift; # dir or file
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my $callback = shift;
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my $node = shift;
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my $dirs = shift;
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my $mnts;
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my $first;
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#print Dumper($dirs);
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# go through each directory in priority order
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#mkdir "/mnt/xcat";
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if($syncType eq "dir"){
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foreach my $priority (sort {$a <=> $b} keys %$dirs){
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# split the nfs server up from the directory:
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my $mntpnt;
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my ($server, $dir) = split(/:/,$dirs->{$priority});
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# if server is blank then its the directory:
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unless($dir){
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$dir = $server;
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$server = '';
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}
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if(grep /\$|#CMD/, $dir){
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$dir = subVar($dir,$node,'dir',$callback);
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$dir =~ s/\/\//\//g;
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}
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$first = $dir;
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$first =~ s!\/([^/]*)\/.*!$1!;
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if($server){
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if(grep /\$/, $server){
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$server = subVar($server,$node,'server',$callback);
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}
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$mntpnt = $server . ":";
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# we have a server and need to make sure we can mount them under unique names
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if($mnts->{$first} eq '' ){ # if the first mount point doesn't have a server then leave it.
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$mnts->{$first} = $server;
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}else{
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# they may just have the name in twice:
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unless($server eq $mnts->{$first}){
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my $msg = "# " . $mnts->{$first} . " and $server both mount /$first. This not supported.";
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$callback->({info => $msg});
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return;
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}else{
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$mntpnt = ""; # only mount it once, so get rid of the directory
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}
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}
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}
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$mntpnt .= $dir;
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# ok, now we have all the mount points. Let's go through them all?
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$callback->({info => "$node: $mntpnt"});
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}
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}elsif($syncType =~ /file|image/){
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foreach my $file (sort keys %$dirs){
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my $options = $dirs->{$file};
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# persistent,rw
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my $out = sprintf("%s: %-13s %s", $node, $options, $file);
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$callback->({info => $out});
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}
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}
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}
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# some directories will have xCAT database values, like:
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# $nodetype.os. If that is the case we need to open up
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# the database and look at them. We need to make sure
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# we do this sparingly... We don't like tons of hits
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# to the database.
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sub subVar {
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my $dir = shift;
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my $node = shift;
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my $type = shift;
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my $callback = shift;
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# parse all the dollar signs...
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# if its a directory then it has a / in it, so you have to parse it.
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# if its a server, it won't have one so don't worry about it.
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my @arr = split("/", $dir);
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my $fdir = "";
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foreach my $p (@arr){
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# have to make this geric so $ can be in the midle of the name: asdf$foobar.sitadsf
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if($p =~ /\$/){
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my $pre;
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my $suf;
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my @fParts;
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if($p =~ /([^\$]*)([^# ]*)(.*)/){
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$pre= $1;
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$p = $2;
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$suf = $3;
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}
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# have to sub here:
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# get rid of the $ sign.
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foreach my $part (split('\$',$p)){
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if($part eq ''){ next; }
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#$callback->({error=>["part is $part"],errorcode=>[1]});
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# check if p is just the node name:
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if($part eq 'node'){
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# it is so, just return the node.
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#$fdir .= "/$pre$node$suf";
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push @fParts, $node;
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}else{
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# ask the xCAT DB what the attribute is.
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my ($table, $col) = split('\.', $part);
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unless($col){ $col = 'UNDEFINED' };
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my $tab = xCAT::Table->new($table);
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unless($tab){
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$callback->({error=>["$table does not exist"],errorcode=>[1]});
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return;
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}
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my $ent;
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my $val;
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if($table eq 'site'){
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$val = $tab->getAttribs( { key => "$col" }, 'value' );
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$val = $val->{'value'};
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}else{
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$ent = $tab->getNodeAttribs($node,[$col]);
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$val = $ent->{$col};
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}
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unless($val){
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# couldn't find the value!!
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$val = "UNDEFINED"
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}
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push @fParts, $val;
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}
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}
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my $val = join('.', @fParts);
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if($type eq 'dir'){
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$fdir .= "/$pre$val$suf";
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}else{
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$fdir .= $pre . $val . $suf;
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}
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}else{
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# no substitution here
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$fdir .= "/$p";
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}
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}
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# now that we've processed variables, process commands
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# this isn't quite rock solid. You can't name directories with #'s in them.
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if($fdir =~ /#CMD=/){
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my $dir;
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foreach my $p (split(/#/,$fdir)){
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if($p =~ /CMD=/){
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$p =~ s/CMD=//;
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my $cmd = $p;
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#$callback->({info=>[$p]});
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$p = `$p 2>&1`;
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chomp($p);
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#$callback->({info=>[$p]});
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unless($p){
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$p = "#CMD=$p did not return output#";
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}
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}
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$dir .= $p;
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}
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$fdir = $dir;
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}
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return $fdir;
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}
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# get all the directories or files for given image related to this node.
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sub getNodeData {
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my $type = shift;
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my $node = shift;
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my $image = shift;
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my $tab = shift;
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my $cb = shift; # callback to print messages!!
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# the image name will be something like rhels5.4-x86_64-nfsroot
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#my $image;
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#unless($type =~ /image/){
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# $image = $ent->{os} . "-" . $ent->{arch} . "-statelite-" . $ent->{profile};
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#}else{
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# $image = $node;
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#}
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my @imageInfo;
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my @attrs;
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if($type eq "dir"){
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@attrs = ['priority', 'directory'];
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}elsif($type =~ /file|image/){
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@attrs = ['file','options'];
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}else{
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print "Yikes! error in the code litefile;getNodeData!";
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exit 1;
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}
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# get the directories with no names
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push @imageInfo, $tab->getAttribs({image => ''}, @attrs);
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# get the ALL directories
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push @imageInfo, $tab->getAttribs({image => 'ALL'}, @attrs);
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# get for the image specific directories
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push @imageInfo, $tab->getAttribs({image => $image}, @attrs);
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# pass back a reference to the directory
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# now we need to sort them
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return mergeArrays($type,\@imageInfo,$cb);
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}
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sub mergeArrays {
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my $type = shift; # file or dir?
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my $arr = shift; # array of info from the tables.
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my $cb = shift; # callback routine
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my $attrs;
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if($type eq "dir"){
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foreach(@$arr){
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if($_->{directory} eq ''){ next; }
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$attrs->{$_->{priority}} = $_->{directory};
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}
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}elsif($type =~ /file|image/){
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foreach(@$arr){
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if($_->{file} eq ''){ next; }
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my $o = $_->{options};
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if(!$o){
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$o = "tmpfs,rw";
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}
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# TODO: put some logic in here to make sure that ro is alone.
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# if type is ro and con, then this is wrong silly!
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#if($p eq "ro" and $t eq "con"){
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# my $f = $_->{file};
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# $cb->({info => "#skipping: $f. not allowed to be ro and con"});
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# next;
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#}
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$attrs->{$_->{file}} = $o;
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}
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}else{
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print "Yikes! Error in the code in mergeArrays!\n";
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exit 1;
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}
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#print "mergeArrays...\n";
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#print Dumper($attrs);
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return $attrs;
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}
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1;
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#vim: set ts=2
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