From 1c7045d0e95807c53d37cb679642d00084ec951b Mon Sep 17 00:00:00 2001
From: Thomas Oulevey <thomas.oulevey@cern.ch>
Date: Oct 13 2016 15:09:43 +0000
Subject: - external_repos_updates.sh: Regenerate buildroot tag if external repo changes

- First version

---

diff --git a/scripts/external_repos_updates.sh b/scripts/external_repos_updates.sh
new file mode 100755
index 0000000..2b2d99b
--- /dev/null
+++ b/scripts/external_repos_updates.sh
@@ -0,0 +1,56 @@
+#!/bin/bash
+
+REPOMD="repodata/repomd.xml"
+
+KOJI_CACHE="/var/cache/cbs-monitorexternalrepos"
+UPDATED_REPOS=""
+UPDATED_BUILDROOTS=`mktemp`
+
+# Ensure the cache directory is available                                                                                                                                                                                                
+[ ! -d $KOJI_CACHE ] && mkdir -p $KOJI_CACHE 
+
+OLDIFS="$IFS"
+IFS=$'\n'
+for REPO in `koji list-external-repos --quiet`
+do
+      sha=""
+      oldsha=""
+      repourl=`echo $REPO | rev| cut -d ' ' -f 1| rev | sed 's/\$arch/x86_64/g'`
+      reponame=`echo $REPO | cut -d ' ' -f 1`
+      if [ "x$reponame" == "x" ]
+      then
+          echo "Repository $REPO is malformed."
+          break
+      fi 
+      sha=`curl --silent $repourl/$REPOMD | sha256sum`
+      if [ $? -gt 0 ]
+      then
+          echo "Couldn't retrieve $repourl/$REPOMD. Skipping $reponame regeneration."
+          continue
+      fi
+      if [ ! -f $KOJI_CACHE/$reponame.sha256sum ] 
+      then
+           echo "$sha" > $KOJI_CACHE/$reponame.sha256sum 
+      else
+           oldsha=`cat $KOJI_CACHE/$reponame.sha256sum`
+           diff <(echo "$sha") <(echo "$oldsha") &> /dev/null
+           if [ $? -gt 0 ]
+           then
+                UPDATED_REPOS="$UPDATED_REPOS $reponame"
+                echo "$sha" > $KOJI_CACHE/$reponame.sha256sum
+           fi
+      fi
+done
+IFS="$OLDIFS"
+
+for REPO in $UPDATED_REPOS
+do
+    buildroots=`koji list-external-repos --name=$REPO --quiet --used | cut -d ' ' -f 1`
+    printf "$buildroots\n" >> $UPDATED_BUILDROOTS 
+done
+
+for BR in `cat $UPDATED_BUILDROOTS | sort | uniq`
+do
+    echo koji regen-repo --nowait $BR
+done
+