mirror of
https://github.com/xcat2/xcat-core.git
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add db2man for blding xCAT-OpenStack man pages
This commit is contained in:
Bruce Potter
411
xCAT-OpenStack/db2man
Executable file
411
xCAT-OpenStack/db2man
Executable file
@@ -0,0 +1,411 @@
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#!/usr/bin/perl
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# IBM(c) 2007 EPL license http://www.eclipse.org/legal/epl-v10.html
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# Builds the xCAT-OpenStack database table man pages from the descriptions that are contained
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# in the Cloud.pm schema plugin. This script is run during the build of the xCAT-OpenStack rpm, but
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# is not packaged in the binary form of that rpm.
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# This script is run in the xCAT-OpenStack subdir of the rpm build directory, so everything is
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# done relative to that.
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# The overview of what this script does is:
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# - get the table descriptions from lib/perl/xCAT_schema/Clouds.pm and create a summary man page
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# - iterate thru the tables in lib/perl/xCAT_schema/Clouds.pm and create pods for each
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# - use the pod2man to convert them to man pages
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# - use the pod2html to convert them to html pages
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use strict;
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use lib 'lib/perl';
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use xCAT_schema::Clouds;
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#use xCAT::Table;
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use Pod::Man;
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use Pod::Html;
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my $VERBOSE = 1; # set this to 1 for debugging
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my $poddir = 'pods';
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my $mandir = 'share/man';
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my $htmldir = 'share/doc';
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my $cachedir = '/tmp';
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my $poddir5 = 'pods/man5';
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my $poddir7 = 'pods/man7';
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if (system("mkdir -p $poddir5")) { die "Error: could not create $poddir5.\n"; }
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if (system("mkdir -p $poddir7")) { die "Error: could not create $poddir7.\n"; }
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# Build the DB overview page.
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print "Building PODs pages for the database tables...\n";
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writesummarypage("$poddir5/xcat-openstack-db.5.pod", getTableDescriptions(), getDefRef());
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# Build the pod man page for each object definition
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my $defspecref = getDefRef();
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foreach my $defkey (keys %$defspecref) {
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my $def = $defspecref->{$defkey};
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my $attrs = $def->{'attrs'};
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my $podfile = "$poddir7/$defkey.7.pod";
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verbose("Writing pod file for $defkey");
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writedefmanpage($podfile, $defkey, $attrs);
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}
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# Build the pod man page for each table.
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my $tabspecref = getTableRef();
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foreach my $tablekey (keys %$tabspecref) {
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my $table = $tabspecref->{$tablekey};
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my $summary = $table->{table_desc};
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my $colorder = $table->{cols};
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my $descriptions = $table->{descriptions};
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verbose("Writing pod file for $tablekey");
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writepodmanpage("$poddir5/$tablekey.5.pod", $tablekey, $summary, $colorder, $descriptions);
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}
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my @pods = getPodList($poddir);
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verbose('Pod list:' . "@pods");
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# Build the man page for each pod.
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print "Converting PODs to man pages...\n";
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foreach my $podfile (@pods) {
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my $manfile = $podfile;
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$manfile =~ s/^$poddir/$mandir/; # change the beginning of the path
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$manfile =~ s/\.pod$//; # change the ending
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my $mdir = $manfile;
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$mdir =~ s|/[^/]*$||; # get rid of the basename part
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if (system("mkdir -p $mdir")) { die "Error: could not create $mdir.\n"; }
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my ($section) = $podfile =~ /\.(\d+)\.pod$/;
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verbose("Converting $podfile to $manfile");
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convertpod2man($podfile, $manfile, $section);
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}
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my @dummyPods = createDummyPods($poddir);
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# Build the html page for each pod.
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print "Converting PODs to HTML pages...\n";
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# have to clear the cache, because old entries can cause a problem
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unlink("$cachedir/pod2htmd.tmp", "$cachedir/pod2htmi.tmp");
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foreach my $podfile (@pods) {
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my $htmlfile = $podfile;
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$htmlfile =~ s/^$poddir/$htmldir/; # change the beginning of the path
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$htmlfile =~ s/\.pod$/\.html/; # change the ending
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my $hdir = $htmlfile;
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$hdir =~ s|/[^/]*$||; # get rid of the basename part
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if (system("mkdir -p $hdir")) { die "Error: could not create $hdir.\n"; }
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verbose("Converting $podfile to $htmlfile");
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convertpod2html($podfile, $htmlfile, $poddir, $htmldir);
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}
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unlink @dummyPods;
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exit;
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# if VERBOSE is on, print out the given string
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sub verbose { if ($VERBOSE) { print $_[0], "\n"; } }
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sub getDefRef { return \%xCAT_schema::Clouds::defspec; }
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sub getTableRef { return \%xCAT_schema::Clouds::tabspec; }
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# Returns a list of the table names in the xCAT database.
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sub getTableList { return keys %xCAT_schema::Clouds::tabspec; }
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# Returns a reference to the db schema hash for the specified table.
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sub getTableSchema { return $xCAT_schema::Clouds::tabspec{$_[0]}; }
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# Return a reference to a hash where each key is the table name and each value is the table description.
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sub getTableDescriptions {
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# List each table name and the value for table_desc.
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my $ret = {};
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#my @a = keys %{$xCAT_schema::Clouds::tabspec{nodelist}}; print 'a=', @a, "\n";
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foreach my $t (getTableList()) { $ret->{$t} = getTableSchema($t)->{table_desc}; }
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return $ret;
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}
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# Recursively get the list of pod man page files.
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sub getPodList {
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my $poddir = shift;
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my @files;
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# 1st get toplevel dir listing
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opendir(DIR, $poddir) or die "Error: could not read $poddir.\n";
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my @topdir = grep !/^\./, readdir(DIR); # /
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close(DIR);
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# Now go thru each subdir (these are man1, man3, etc.)
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foreach my $mandir (@topdir) {
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opendir(DIR, "$poddir/$mandir") or die "Error: could not read $poddir/$mandir.\n";
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my @dir = grep !/^\./, readdir(DIR); # /
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close(DIR);
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foreach my $file (@dir) {
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push @files, "$poddir/$mandir/$file";
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}
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}
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return sort @files;
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}
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# Create the html page for one pod.
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sub convertpod2html {
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my ($podfile, $htmlfile, $poddir, $htmldir) = @_;
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#TODO: use --css=<stylesheet> and --title=<pagetitle> to make the pages look better
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pod2html($podfile,
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"--outfile=$htmlfile",
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"--podpath=man5:man7",
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"--podroot=$poddir",
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"--htmldir=$htmldir",
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"--recurse",
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"--cachedir=$cachedir",
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);
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}
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# Create the man page for one pod.
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sub convertpod2man {
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my ($podfile, $manfile, $section) = @_;
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my $parser = Pod::Man->new(section => $section);
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$parser->parse_from_file($podfile, $manfile);
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}
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# Create the xcat-openstack-db man page that gives a summary description of each table.
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sub writesummarypage {
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my $file = shift; # relative path file name of the man page
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my $descriptions = shift; # a hash containing the description of each table
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my $defdescriptions = shift; # a hash containing the description of each object definition
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open(FILE, ">$file") or die "Error: could not open $file for writing.\n";
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print FILE <<'EOS1';
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=head1 NAME
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An overview of the xCAT OpenStack database objects and tables.
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=head1 DESCRIPTION
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The xCAT OpenStack database objects and tables contain user settings for the OpenStack cloud being set up by xCAT.
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To get more information about a particular table, run man for that table name.
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The tables and objects can be viewed using B<tabdump>, B<nodels>, or B<lsdef>.
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The tables and objects can be manipulated directly using B<tabedit>, B<nodech>, or B<chdef>.
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For more information about the xCAT database and the base tables and objects, see the L<xcatdb(5)|xcatdb.5> man page.
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=head1 XCAT OPENSTACK OBJECT DEFINITIONS
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Because it can get confusing what attributes need to go in what tables, the xCAT database can also
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be viewed and edited as logical objects, instead of flat tables. Use B<mkdef>, B<chdef>, B<lsdef>,
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and B<rmdef> to create, change, list, and delete objects.
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When using these commands, the object attributes will be stored in the same tables, as if you edited
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the tables by hand. The only difference is that the object commands take care of knowing which tables
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all of the information should go in.
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To run man for any of the object definitions below, use section 7. For example: B<man 7 node>
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The object types are:
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=over 2
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EOS1
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foreach my $def (sort keys %$defdescriptions) {
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if ($def eq 'node') { print FILE "\n=item L<$def(7)|node-openstack.7>\n"; } # can not overwrite the node man page in xcat-core
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else { print FILE "\n=item L<$def(7)|$def.7>\n"; }
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}
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print FILE <<"EOS2";
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=back
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=head1 TABLES
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To manipulate the tables directly, use B<nodels(1)>, B<chtab(8)>, B<tabdump(8)>, B<tabedit(8)>,
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B<nodeadd(8)>, B<nodech(1)>.
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To run man for any of the table descriptions below, use section 5. For example: B<man 5 nodehm>
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The tables are:
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=over 2
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EOS2
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foreach my $table (sort keys %$descriptions) {
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print FILE "\n=item L<$table(5)|$table.5>\n\n".$descriptions->{$table}."\n";
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}
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print FILE <<"EOS3";
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=back
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=head1 SEE ALSO
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B<nodels(1)>, B<chtab(8)>, B<tabdump(8)>, B<tabedit(8)>, B<lsdef(1)>, B<mkdef(1)>, B<chdef(1)>, B<rmdef(1)>
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EOS3
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close FILE;
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}
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# Create the man page for one object definition.
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sub writedefmanpage {
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my $file = shift; # relative path file name of the man page
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my $defname = shift; # name of object
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my $attrs = shift; # reference to the array of attributes
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# Make exception for the node object, because we can not overwrite the node man page from xcat-core
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if ($defname eq 'node') { $file = "$poddir7/node-openstack.7.pod"; }
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# Go thru the attributes, collecting the descriptions
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# Note: this logic is loosely taken from DBobjectdefs.pm
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my %attrlist; # holds the attr name as the key, and the description & tables as value
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foreach my $this_attr (@$attrs) {
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my $attr = $this_attr->{attr_name};
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my $desc = $this_attr->{description};
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my ($table, $at) = split(/\./, $this_attr->{tabentry});
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if (!defined($desc)) {
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# description key not there, so go to the corresponding
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# entry in tabspec to get the description
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my $schema = getTableSchema($table);
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$desc = $schema->{descriptions}->{$at};
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}
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# Attr names can appear more than once, if they are in multiple tables.
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# We will keep track of that based on the table attribute, because that can be duplicated too
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if (!defined($attrlist{$attr})) {
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$attrlist{$attr}->{'tables'} = []; # initialize the array, so we can check it below
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}
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my $tableattr = "$table.$at";
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if (!grep(/^$tableattr$/, @{$attrlist{$attr}->{'tables'}})) {
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# there can be multiple entries that refer to the same table attribute
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# if this is a new table attribute, then save the attr name and description
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push @{$attrlist{$attr}->{'tables'}}, $tableattr;
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push @{$attrlist{$attr}->{'descriptions'}}, $desc;
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}
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}
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open(FILE, ">$file") or die "Error: could not open $file for writing.\n";
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print FILE <<"EOS1";
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=head1 NAME
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B<$defname> - a logical object definition in the xCAT database.
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=head1 SYNOPSIS
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EOS1
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print FILE "B<$defname Attributes:> I<" . join('>, I<',sort(keys(%attrlist))) . ">\n";
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print FILE <<"EOS2";
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=head1 DESCRIPTION
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Logical objects of this type are stored in the xCAT database in one or more tables. Use the following commands
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to manipulate the objects: B<mkdef>, B<chdef>, B<lsdef>, and B<rmdef>. These commands will take care of
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knowing which tables the object attributes should be stored in. The attribute list below shows, in
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parentheses, what tables each attribute is stored in.
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=head1 $defname Attributes:
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=over 6
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EOS2
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foreach my $a (sort keys %attrlist) {
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my $d = join("\nor\n", @{$attrlist{$a}->{'descriptions'}});
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$d =~ s/\n/\n\n/sg; # if there are newlines, double them so pod sees a blank line, otherwise pod will ignore them
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my $t = '(' . join(', ',@{$attrlist{$a}->{'tables'}}) . ')';
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#print FILE "\nB<$a> - $d\n";
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print FILE "\n=item B<$a> $t\n\n$d\n";
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}
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print FILE <<"EOS3";
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=back
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EOS3
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if ($defname eq 'node') {
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print FILE "B<The node attributes listed above are just the ones that the xCAT-OpenStack RPM adds to the node object definition. For the rest of the node attributes from xcat-core, see the L<node(7)|node.7> man page.>\n\n";
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}
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print FILE <<"EOS4";
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=head1 SEE ALSO
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B<mkdef(1)>, B<chdef(1)>, B<lsdef(1)>, B<rmdef(1)>
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EOS4
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close FILE;
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}
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# Create the man page for one table.
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sub writepodmanpage {
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my $file = shift; # relative path file name of the man page
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my $tablename = shift; # name of table
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my $summary = shift; # description of table
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my $colorder = shift; # the order in which the table attributes should be presented in
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my $descriptions = shift; # a hash containing the description of each attribute
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open(FILE, ">$file") or die "Error: could not open $file for writing.\n";
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print FILE <<"EOS1";
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=head1 NAME
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B<$tablename> - a table in the xCAT database.
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=head1 SYNOPSIS
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EOS1
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print FILE "B<$tablename Attributes:> I<" . join('>, I<',@$colorder) . ">\n";
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print FILE <<"EOS2";
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=head1 DESCRIPTION
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$summary
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=head1 $tablename Attributes:
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=over 10
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EOS2
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foreach my $a (@$colorder) {
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my $d = $descriptions->{$a};
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#$d =~ s/\n/\n\n/sg; # if there are newlines, double them so pod sees a blank line, otherwise pod will ignore them
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#print FILE "\nB<$a> - $d\n";
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print FILE "\n=item B<$a>\n\n$d\n";
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}
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print FILE <<"EOS3";
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=back
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=head1 SEE ALSO
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B<nodels(1)>, B<chtab(8)>, B<tabdump(8)>, B<tabedit(8)>
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EOS3
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close FILE;
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}
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# To enable linking between the man pages in xCAT-OpenStack and the xcat-core man pages
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# we need to create an empty one that will satisfy pod2html.
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# Returns all dummy pods created, so they can be removed later
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sub createDummyPods {
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my $poddir = shift @_;
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# Also add xcattest.1.pod and buildkit.1.pod, because the xcat.1.pod summary page refers to it
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push @dummyPods, "$poddir/man7/node.7.pod";
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push @dummyPods, "$poddir/man5/xcatdb.5.pod";
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# Create these empty files
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print "Creating empty linked-to files: ", join(', ', @dummyPods), "\n";
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#mkdir "$poddir/man7";
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foreach my $d (@dummyPods) {
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if (!open(TMP, ">>$d")) { warn "Could not create dummy pod file $d ($!)\n"; }
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else { close TMP; }
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}
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return @dummyPods;
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}
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