From 78ac9758104d9f23e3d8c346bae865902e7f36dd Mon Sep 17 00:00:00 2001
From: Raphael Geissert <atomo64@gmail.com>
Date: Thu, 26 Apr 2012 23:38:17 -0500
Subject: Only perform the second stage if upstream is not updating

Instead of not updating the trace file, skip the second stage so that
the mirror is kept in a consistent state.
---
 bin/ftpsync | 54 ++++++++++++++++++++++++++++++------------------------
 1 file changed, 30 insertions(+), 24 deletions(-)

diff --git a/bin/ftpsync b/bin/ftpsync
index 9cfe35e..646e9d8 100755
--- a/bin/ftpsync
+++ b/bin/ftpsync
@@ -487,17 +487,37 @@ while [ -e "${UPDATEREQUIRED}" ]; do
 
     # if we want stage2 *or* all
     if [ "xtruex" = "x${SYNCSTAGE2}x" ] || [ "xtruex" = "x${SYNCALL}x" ]; then
-        log "Running stage2: ${RSYNC} ${RSYNC_OPTIONS} ${RSYNC_OPTIONS2} ${EXCLUDE} ${SOURCE_EXCLUDE} ${RSYNCPTH}::${RSYNC_PATH} ${TO}"
+        upstream_uip=false
+        for aupfile in "${TO}/Archive-Update-in-Progress-"*; do
+            case "$aupfile" in
+                "${TO}/Archive-Update-in-Progress-*")
+                    :
+                ;;
+                "${LOCK}")
+                    :
+                ;;
+                *)
+                    upstream_uip=true
+                ;;
+            esac
+        done
 
-        set +e
-        # We are lucky, it worked. Now do step 2 and sync again, this time including
-        # the packages/releases files
-        ${RSYNC} ${RSYNC_OPTIONS} ${RSYNC_OPTIONS2} ${EXCLUDE} ${SOURCE_EXCLUDE} \
-            ${RSYNCPTH}::${RSYNC_PATH} "${TO}" >>"${LOGDIR}/rsync-${NAME}.log" 2>>"${LOGDIR}/rsync-${NAME}.error"
-        result=$?
-        set -e
+        if $upstream_uip; then
+            log "Upstream archive update in progress, skipping stage2 (ignore rsync error below)"
+	    result=1
+        else
+            log "Running stage2: ${RSYNC} ${RSYNC_OPTIONS} ${RSYNC_OPTIONS2} ${EXCLUDE} ${SOURCE_EXCLUDE} ${RSYNCPTH}::${RSYNC_PATH} ${TO}"
+
+            set +e
+            # We are lucky, it worked. Now do step 2 and sync again, this time including
+            # the packages/releases files
+            ${RSYNC} ${RSYNC_OPTIONS} ${RSYNC_OPTIONS2} ${EXCLUDE} ${SOURCE_EXCLUDE} \
+                ${RSYNCPTH}::${RSYNC_PATH} "${TO}" >>"${LOGDIR}/rsync-${NAME}.log" 2>>"${LOGDIR}/rsync-${NAME}.error"
+            result=$?
+            set -e
 
-        log "Back from rsync with returncode ${result}"
+            log "Back from rsync with returncode ${result}"
+        fi
     else
         # Fake a good resultcode
         result=0
@@ -523,21 +543,7 @@ done
 # We only update our tracefile when we had a stage2 or an all sync.
 # Otherwise we would update it after stage1 already, which is wrong.
 if [ "xtruex" = "x${SYNCSTAGE2}x" ] || [ "xtruex" = "x${SYNCALL}x" ]; then
-    should_update=true
-    for aupfile in "${TO}/Archive-Update-in-Progress-"*; do
-        case "$aupfile" in
-            "${TO}/Archive-Update-in-Progress-*")
-                :
-            ;;
-            "${LOCK}")
-                :
-            ;;
-            *)
-                should_update=false
-            ;;
-        esac
-    done
-    if $should_update && [ -d "$(dirname "${TO}/${TRACE}")" ]; then
+    if [ -d "$(dirname "${TO}/${TRACE}")" ]; then
         LC_ALL=POSIX LANG=POSIX date -u > "${TO}/${TRACE}"
         echo "Used ftpsync version: ${VERSION}" >> "${TO}/${TRACE}"
         echo "Running on host: $(hostname -f)" >> "${TO}/${TRACE}"
-- 
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