current state of work on runlevel generator.. (still not fully useable)

git-svn-id: http://svn.openslx.org/svn/openslx/openslx/trunk@2813 95ad53e4-c205-0410-b2fa-d234c58c8868

1 files changed, 239 insertions, 63 deletions

diff --git a/lib/OpenSLX/DistroUtils/Base.pm b/lib/OpenSLX/DistroUtils/Base.pm
index e7e4f367..90cad7a0 100644
--- a/lib/OpenSLX/DistroUtils/Base.pm
+++ b/lib/OpenSLX/DistroUtils/Base.pm
@@ -1,4 +1,4 @@
-# Copyright (c) 2008 - OpenSLX GmbH
+# Copyright (c) 2008, 2009 - OpenSLX GmbH
 #
 # This program is free software distributed under the GPL version 2.
 # See http://openslx.org/COPYING
@@ -15,7 +15,11 @@ package OpenSLX::DistroUtils::Base;
 
 use Data::Dumper;
 use OpenSLX::Utils;
+use Clone qw(clone);
+use Switch;
 
+use strict;
+use warnings;
 
 sub new
 {
@@ -34,7 +38,7 @@ sub dumpInit
     print $self->generateInitFile($initFile);
 }
 
-sub _combineBlock
+sub _concatContent
 {
     my $self = shift;
     my $block = shift;
@@ -46,7 +50,7 @@ sub _combineBlock
     $output .= "\n";
     
     my $content = $block->{'content'};
-    while ( ($priority, $contentArray) = each %$content )
+    while ( my ($priority, $contentArray) = each %$content )
     {
         $output .= join("\n", @$contentArray);
         $output .= "\n";
@@ -103,82 +107,254 @@ sub _insertSystemHelperFunctions
     return $content;
 }
 
-sub generateInitFile
+sub _renderHighlevelConfig
 {
     my $self = shift;
     my $initFile = shift;
-    my $block;
     
-    my $config = $initFile->{'configHash'};
+    my $element;
+    my $hlc = $initFile->{'configHash'}->{'highlevelConfig'};
     
-        print  Dumper($initFile->{'configHash'});
+    while ( $element = shift(@$hlc)){
+        switch ($element->{type}) {
+            case 'daemon' {
+                my $tpl;
+                $tpl  = "%s_BIN=%s \n";
+                $tpl .= "[ -x %s_BIN ] || exit 5\n\n";
+                $tpl .= "%s_OPTS=\"%s\" \n";
+                $tpl .= "[ -f /etc/sysconfig/%s ] . /etc/sysconfig/%s \n\n";
+                $tpl .= "[ -f /etc/default/%s ] . /etc/default/%s \n\n";
+                $tpl .= "%s_PIDFILE=\"/var/run/%s.init.pid\" \n\n";
+                $initFile->addToBlock('head',
+                    sprintf(
+                        $tpl,
+                        uc($element->{shortname}),
+                        $element->{binary},
+                        uc($element->{shortname}),
+                        uc($element->{shortname}),
+                        $element->{parameters},
+                        $element->{shortname},
+                        $element->{shortname},
+                        $element->{shortname},
+                        $element->{shortname},
+                        uc($element->{shortname}),
+                        $element->{shortname}
+                    )
+                );
+                
+                $tpl  = "echo -n \"Starting %s \"\n";
+                $tpl .= "startproc -f -p \$%s_PIDFILE \$%s_BIN \$%s_OPTS\n";
+                $tpl .= "rc_status -v";
+                $initFile->addToCase('start',
+                    sprintf(
+                        $tpl,
+                        $element->{desc},
+                        uc($element->{shortname}),
+                        uc($element->{shortname}),
+                        uc($element->{shortname})
+                    )
+                );
+
+                $tpl  = "echo -n \"Shutting down %s\" \n";
+                $tpl .= "killproc -p \$%s_PIDFILE -TERM \$%s_BIN\n";
+                $tpl .= "rc_status -v";
+                $initFile->addToCase('stop',
+                    sprintf(
+                        $tpl,
+                        $element->{desc},
+                        uc($element->{shortname}),
+                        uc($element->{shortname})
+                    )
+                );
+                
+                $tpl  = "## Stop the service and if this succeeds (i.e. the \n";
+                $tpl .= "## service was running before), start it again.\n";
+                $tpl .= "\$0 status >/dev/null &&  \$0 restart\n\n";
+                $tpl .= "# Remember status and be quiet\n";
+                $tpl .= "rc_status";
+                $initFile->addToCase('try-restart',
+                    $tpl
+                );
+
+                $tpl  = "## Stop the service and regardless of whether it was \n";
+                $tpl .= "## running or not, start it again.\n";
+                $tpl .= "\$0 stop\n";
+                $tpl .= "\$0 start\n\n";
+                $tpl .= "# Remember status and be quiet\n";
+                $tpl .= "rc_status";
+                $initFile->addToCase('restart',
+                    $tpl
+                );
+                
+                $tpl  = "echo -n \"Reload service %s\"\n";
+                $tpl .= "killproc -p \$%s_PIDFILE -HUP \$%s_BIN\n";
+                $tpl .= "rc_status -v";
+                $initFile->addToCase('reload',
+                    sprintf(
+                        $tpl,
+                        $element->{desc},
+                        uc($element->{shortname}),
+                        uc($element->{shortname}),
+                        uc($element->{shortname})
+                    )
+                );
+
+                $tpl  = "echo -n \"Checking for service %s\"\n";
+                $tpl .= "checkproc -p \$%s_PIDFILE \$%s_BIN\n";
+                $tpl .= "rc_status -v";
+                $initFile->addToCase('status',
+                    sprintf(
+                        $tpl,
+                        $element->{desc},
+                        uc($element->{shortname}),
+                        uc($element->{shortname})
+                    )
+                );
+
+                
+            }
+        }
+    }
     
+}
+
+
+sub _getInitsystemIncludes
+{
+    return "\n";
+}
+
+sub _renderCasePrefix
+{
+    return "\n";
+}
+
+sub _renderFooter
+{
+    return "exit 0\n";
+}
+
+sub _generateUsage
+{
+	my $self = shift;
+	my $usage = shift;
+	my $tpl;
+	
+    $tpl  = "## print out usage \n";
+    $tpl .= "echo \"Usage: \$0 {%s}\" >&2 \n";
+    $tpl .= "exit 1";
+	
+	return sprintf(
+	   $tpl,
+	   $usage
+	);
+}
+
+sub _getAuthorBlock
+{
+	my $tpl;
+	
+	$tpl  = "# Copyright (c) 2009 - OpenSLX GmbH \n";
+    $tpl .= "# \n";
+    $tpl .= "# This program is free software distributed under the GPL version 2. \n";
+    $tpl .= "# See http://openslx.org/COPYING \n";
+    $tpl .= "# \n";
+    $tpl .= "# If you have any feedback please consult http://openslx.org/feedback and \n";
+    $tpl .= "# send your suggestions, praise, or complaints to feedback\@openslx.org \n";
+    $tpl .= "# \n";
+    $tpl .= "# General information about OpenSLX can be found at http://openslx.org/ \n";
+    $tpl .= "# -----------------------------------------------------------------------------\n";
+    $tpl .= "# §filename§ \n";
+    $tpl .= "#    - §desc§ \n";
+    $tpl .= "# §generated§ \n";
+    $tpl .= "# -----------------------------------------------------------------------------\n\n";
+	
+	return sprintf(
+	   $tpl
+	);
+}
+
+sub generateInitFile
+{
+    my $self = shift;
+    my $initFile = shift;
+    my $content;
+    my @usage;
+    
+    # get a copy of initFile object before modifying it..
+    my $initFileCopy = clone($initFile);
+
+    $self->_renderHighlevelConfig($initFileCopy);
     
-    $output = "#!/bin/sh\n\n";
+    my $config = $initFileCopy->{'configHash'};
+    my $output;
+    
+    # head
+    $output = "#!/bin/sh\n";
+    $output .= $self->_getAuthorBlock();
     $output .= $self->_renderInfoBlock($config);
-    $output .= "set -e \n\n";
-    if (keys(%{$config->{'head'}->{'content'}}) > 0) {
-        $output .= $self->_combineBlock($config->{'head'});
-    }
-    if (keys(%{$config->{'functions'}->{'content'}}) > 0) {
-        $output .= $self->_combineBlock($config->{'functions'});
-    }
-    $output .= "case \"\$1\" in \n";
-    if (keys(%{$config->{'start'}->{'content'}}) > 0) {
-        $output .= "  start)\n";
-        $block = $self->_combineBlock($config->{'start'});
-        $block =~ s/^/    /mg;
-        $output .= $block;
-        $output .= "  ;;\n";
-    } else {
-        # trigger error
-        # start is essential
-    }
-    if (keys(%{$config->{'stop'}->{'content'}}) > 0) {
-        $output .= "  stop)\n";
-        $block = $self->_combineBlock($config->{'stop'});
-        $block =~ s/^/    /mg;
-        $output .= $block;
-        $output .= "  ;;\n";
-    } else {
-        # trigger error
-        # stop is essential
+    $output .= $self->_getInitsystemIncludes();
+    
+    if (keys(%{$config->{'blocks'}->{'head'}->{'content'}}) > 0) {
+        $output .= $self->_concatContent($config->{'blocks'}->{'head'});
     }
-    if (keys(%{$config->{'reload'}->{'content'}}) > 0) {
-        $output .= "  reload)\n";
-        $block = $self->_combineBlock($config->{'reload'});
-        $block =~ s/^/    /mg;
-        $output .= $block;
-        $output .= "  ;;\n";
+    
+    # functions
+    if (keys(%{$config->{'blocks'}->{'functions'}->{'content'}}) > 0) {
+        $output .= $self->_concatContent($config->{'blocks'}->{'functions'});
     }
-    if (keys(%{$config->{'restart'}->{'content'}}) > 0) {
-        $output .= "  restart)\n";
-        $block = $self->_combineBlock($config->{'restart'});
-        $block =~ s/^/    /mg;
-        $output .= $block;
-        $output .= "  ;;\n";
+    
+    # case block
+    $output .= $self->_renderCasePrefix();
+    $output .= "\ncase \"\$1\" in \n";  
+    
+    # get caseBlocks in defined order
+    my @blocks = sort{
+    	   $config->{'caseBlocks'}->{$a}->{'order'} <=> 
+    	   $config->{'caseBlocks'}->{$b}->{'order'}
+        } 
+    	keys(%{$config->{'caseBlocks'}});
+    
+    # case block
+    while (@blocks)
+    {
+    	my $block= shift(@blocks);
+	    if (keys(%{$config->{'caseBlocks'}->{$block}->{'content'}}) > 0) {
+	    	push(@usage, $block);
+	        $output .= "  $block)\n";
+	        $content = $self->_concatContent($config->{'caseBlocks'}->{$block});
+	        $content =~ s/^/    /mg;
+	        $output .= $content;
+	        $output .= "  ;;\n";
+	    } else {
+	    	if ($config->{'caseBlocks'}->{$block}->{'required'}) {
+	    		print "required block $block undefined";
+	    	}
+	    }    	
     }
-    if (keys(%{$config->{'status'}->{'content'}}) > 0) {
-        $output .= "  status)\n";
-        $block = $self->_combineBlock($config->{'status'});
-        $block =~ s/^/    /mg;
-        $output .= $block;
+    
+    # autogenerate usage
+    if (scalar(grep(/usage/, @usage)) == 0) {
+    	$initFileCopy->addToCase(
+    	       'usage',
+    	       $self->_generateUsage(join(', ',@usage))
+    	);
+
+ 	    $output .= "  *)\n";
+        $content = $self->_concatContent($config->{'caseBlocks'}->{'usage'});
+        $content =~ s/^/    /mg;
+        $output .= $content;
         $output .= "  ;;\n";
+    	
     }
-    if (keys(%{$config->{'usage'}->{'content'}}) > 0) {
-        $output .= "  *)\n";
-        $block = $self->_combineBlock($config->{'usage'});
-        $block =~ s/^/    /mg;
-        $output .= $block;
-        $output .= "  exit 1\n";
-    } else {
-        # try to generate usage
-        # $this->_generateUsage();
-    }
+    
+    # footer
     $output .= "esac\n\n";
-    $output .= "exit 0\n";
+    $output .= $self->_renderFooter();
+    
     return $output;
     
 }
 
+
 1;
\ No newline at end of file