From eff0335ba4cefc16971bee9a22fe94f039af9258 Mon Sep 17 00:00:00 2001
From: Thierry Parmentelat <thierry.parmentelat@sophia.inria.fr>
Date: Wed, 25 Jun 2008 08:24:27 +0000
Subject: [PATCH] rewritten for - taking multi-arch into account - removing the
 need for specific conf-files for alpha-beta See the impact on running
 deployments at
 http://svn.planet-lab.org/wiki/NodeFamily#Notesonyumreposandyum.conf.php

---
 PlanetLabConf/yum.conf.php | 131 ++++++++++++++++++++++++-------------
 1 file changed, 86 insertions(+), 45 deletions(-)

diff --git a/PlanetLabConf/yum.conf.php b/PlanetLabConf/yum.conf.php
index c15ea78..40671b2 100755
--- a/PlanetLabConf/yum.conf.php
+++ b/PlanetLabConf/yum.conf.php
@@ -71,31 +71,15 @@ global $adm;
 
 // Requesting yum.conf. See above for the mirrorlist definition.
 
-#$oldrepos = array(array('FedoraCore2Base', 'Fedora Core 2 Base', 'stock-fc2'),
-#	       array('FedoraCore2Updates', 'Fedora Core 2 Updates', 'updates-fc2'),
-#	       array('ThirdParty', 'Third Party RPMS', '3rdparty'));
-
-$repos = array(array('ThirdParty', 'Third Party RPMS', '3rdparty'));
-
-
-if (isset($_REQUEST['alpha'])) {
-  $repos[] = array('PlanetLabAlpha', 'PlanetLab Alpha RPMS', 'planetlab-alpha');
-} elseif (isset($_REQUEST['beta'])) {
-  $repos[] = array('PlanetLabBeta', 'PlanetLab Beta RPMS', 'planetlab-beta');
-} elseif (isset($_REQUEST['rollout'])) {
-  $repos[] = array('PlanetLab', 'PlanetLab RPMS', 'planetlab-rollout');
-} else {
-  $repos[] = array('PlanetLab', 'PlanetLab RPMS', 'planetlab');
-}
-
 if (isset($_REQUEST['gpgcheck'])) {
   $gpgcheck = $_REQUEST['gpgcheck'];
 } else {
   $gpgcheck = 0;
 }
 
+// fedora stock : base & updates 
 
-echo <<<EOF
+echo <<<__STD_REPOS__
 [main]
 # Do not scan /etc/yum.repos.d/
 reposdir=/dev/null
@@ -110,48 +94,105 @@ name=Fedora Core \$releasever - \$basearch - Base
 mirrorlist=https://$PLC_BOOT_HOST/PlanetLabConf/yum.conf.php?mirrorlist&repo=base&releasever=\$releasever
 gpgcheck=$gpgcheck
 # PlanetLab builds its own versions of these tools
-exclude=iptables kernel kernel kernel-devel kernel-smp kernel-smp-devel kernel-xen0 kernel-xen0-devel kernel-xenU kernel-xenU-devel mysql ulogd
+exclude=kernel* iptables iproute
 
 [updates]
 name=Fedora Core \$releasever - \$basearch - Released Updates
 mirrorlist=https://$PLC_BOOT_HOST/PlanetLabConf/yum.conf.php?mirrorlist&repo=updates&releasever=\$releasever
 gpgcheck=$gpgcheck
 # PlanetLab builds its own versions of these tools
-exclude=iptables kernel kernel kernel-devel kernel-smp kernel-smp-devel kernel-xen0 kernel-xen0-devel kernel-xenU kernel-xenU-devel mysql ulogd
-
-EOF;
-
-// Figure out which repositories we actually have on this
-// machine. MyPLC installations, for instance, generally only have
-// PlanetLab RPMS installed.
-foreach ($repos as $repo) {
-  $id = $repo[0];
-  $name = $repo[1] . " -- " . "$PLC_NAME Central";
-  $dir = "/install-rpms/" . $repo[2];
-  $baseurl = "https://$PLC_BOOT_HOST" . $dir . "/";
-
-  if (is_dir(realpath($_SERVER['DOCUMENT_ROOT'] . $dir))) {
-    echo <<<EOF
-[$id]
-name=$name
-baseurl=$baseurl
-gpgcheck=$gpgcheck
-
+exclude=kernel* iptables iproute
+
+__STD_REPOS__;
+
+echo "\n";
+
+# get node family
+if ( ! isset($_REQUEST['slicefamily'])) {
+  # legacy : use the old naming scheme
+  $nodefamily="planetlab";
+  $pldistro="planetlab";
+ } else {
+  $slicefamily = $_REQUEST['slicefamily'];
+  echo "# slicefamily $slicefamily \n" ;
+  list( $pldistro, $fcdistro, $arch) = split ("-", $slicefamily);
+  $nodefamily = "$pldistro-$arch";
+  echo "# nodefamily $nodefamily \n" ;
+ }
 
-EOF;
-  }
-}
+# the nodegroups the node is part of
+$nodegroup_names=array();
 
-if (isset($_REQUEST['node_id'])) {
+if ( ! isset($_REQUEST['node_id'])) {
+  print "# Warning : node_id not set\n";
+ } else {
   $node_id=intval($_REQUEST['node_id']);
-  echo "# node_id = " . $node_id . "\n";
+  echo "# node_id $node_id \n";
   # compute nodegroups
   $nodes = $adm->GetNodes(array('node_id'=>$node_id));
   $nodegroup_ids = $nodes[0]['nodegroup_ids'];
   $nodegroups = $adm->GetNodeGroups($nodegroup_ids);
   foreach ($nodegroups as $nodegroup) {
-    echo "# in nodegroup " . $nodegroup['name'] . "\n" ;
+    $nodegroup_name = $nodegroup['name'];
+    $nodegroup_names [] = $nodegroup_name;
+    echo "# in nodegroup $nodegroup_name \n" ;
+  }
+ }
+
+$topdir=$_SERVER['DOCUMENT_ROOT'] . "/install-rpms/";
+$topurl="https://$PLC_BOOT_HOST" . "/install-rpms/";
+
+
+# locate the planetlab repo for this node family & nodegroup
+$repo=NULL;
+foreach ($nodegroup_names as $nodegroup_name) {
+  $groupdir = "$nodefamily-$nodegroup_name";
+  # have we got a repo like /install-rpms/planetlab-i386-alpha ?
+  echo "# trying " . $topdir . $groupdir . "\n";
+  if (is_dir (realpath($topdir . $groupdir))) {
+    $repo=array($pldistro, $groupdir, "$PLC_NAME $nodefamily $nodegroup_name");
+    break;
+  }
+}
+
+# if not found yet
+if ( ! $repo) {
+  echo "# trying default " . $topdir . $nodefamily . "\n";
+  if (is_dir (realpath($topdir . $nodefamily))) {
+    $repo = array($pldistro, $nodefamily, "$PLC_NAME $nodefamily regular");
   }
  }
 
+# default: if we're here it's probably very wrong
+if ( ! $repo) {
+  echo "# WARNING: could not find a decent planetlab repo for this node\n";
+  $repo = array ($pldistro, "planetlab", "default probably wrong");
+ }
+
+list( $id, $dir, $name) = $repo;
+
+echo <<< __PLC_REPO__
+[$id]
+name=$name
+baseurl=$topurl/$dir
+gpgcheck=$gpgcheck
+__PLC_REPO__;
+
+#################### I guess this might go to trash, but just in case:
+# mention if exist: install-rpms/planetlab-i386-3rdparty 
+$optional_repos = array (array ('ThirdParty', '3rdparty','Third Party RPMS'));
+
+foreach ($optional_repos as $repo) {
+  list( $id, $dir, $name) = $repo;
+  if (is_dir (realpath($topdir . $dir))) {
+    echo <<< __OPT_REPO__
+[$id]
+name=$name
+baseurl=$topurl/$dir
+gpgcheck=$gpgcheck
+__OPT_REPO__;
+
+  }
+}
+
 ?>
-- 
2.43.0