- avoid regenerating yum metadata if no packages are newer than the

  metadata files

diff --git a/plc.d/packages b/plc.d/packages
index 3392ed1..dab7fca 100755 (executable)
--- a/plc.d/packages
+++ b/plc.d/packages
@@ -7,7 +7,7 @@
 # Mark Huang <mlhuang@cs.princeton.edu>
 # Copyright (C) 2006 The Trustees of Princeton University
 #
-# $Id: packages,v 1.5 2007/01/30 15:09:22 thierry Exp $
+# $Id: packages,v 1.6 2007/01/30 15:56:53 thierry Exp $
 #
 
 # Source function library and configuration
@@ -34,25 +34,35 @@ case "$1" in
        fi
 
        for repository in $repositories ; do
-            # Sign all RPMS. setsid detaches rpm from the terminal,
-            # allowing the (hopefully blank) GPG password to be
-            # entered from stdin instead of /dev/tty.
            packages=
            stamps=
-           # create a stamp once the package gets signed
+           yum_arch=0
+           createrepo=0
+
+           # Create a stamp once the package gets signed
            mkdir $repository/signed-stamps
 
            for package in $repository/*.rpm ; do
                stamp=$repository/signed-stamps/$(basename $package).signed
-               # is package newer than stamp ?
+               # If package is newer than signature stamp
                if [ $package -nt $stamp ] ; then
                    packages="$packages $package"
                    stamps="$stamps $stamp"
-               else
-                   echo "Package $package already signed - skipped"
+               fi
+               # Or yum-arch headers
+               if [ $package -nt $repository/headers/header.info ] ; then
+                   yum_arch=1
+               fi
+               # Or createrepo database
+               if [ $package -nt $repository/repodata/repomd.xml ] ; then
+                   createrepo=1
                fi
            done
+
            if [ -n "$packages" ] ; then
+               # Sign RPMS. setsid detaches rpm from the terminal,
+                # allowing the (hopefully blank) GPG password to be
+                # entered from stdin instead of /dev/tty.
                echo | setsid rpm \
                    --define "_signature gpg" \
                    --define "_gpg_path /etc/planetlab" \
@@ -64,10 +74,22 @@ case "$1" in
            # Update yum metadata. yum-arch createrepo sometimes leaves behind
            # .oldheaders and .olddata directories accidentally.
            rm -rf $repository/{.oldheaders,.olddata}
-           yum-arch $repository
-           check
-           createrepo -g yumgroups.xml $repository
-           check
+
+           # Old command is yum-arch
+           if [ $yum_arch -eq 1 ] ; then
+               yum-arch $repository
+               check
+           fi
+
+           # New command is createrepo
+           if [ $createrepo -eq 1 ] ; then
+               if [ -f $repository/yumgroups.xml ] ; then
+                   createrepo -g yumgroups.xml $repository
+               else
+                   createrepo $repository
+               fi
+               check
+           fi
        done
 
        result "$MESSAGE"