SOLR-2099: Add ability to throttle rsync based replication using rsync option --bwlimit

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@992913 13f79535-47bb-0310-9956-ffa450edef68

solr/CHANGES.txt

@@ -252,6 +252,9 @@ New Features
 
 * SOLR-1665: Add debug component options for timings, results and query info only (gsingers, hossman, yonik)    
 
+* SOLR-2099: Add ability to throttle rsync based replication using rsync option --bwlimit.
+  (Brandon Evans via koji)
+
 Optimizations
 ----------------------
 

solr/src/scripts/rsyncd-start

@@ -22,7 +22,7 @@ cd ${0%/*}/..
 solr_root=$(pwd)
 cd ${orig_dir}
 
-unset data_dir solr_port rsyncd_port user verbose debug
+unset data_dir solr_port rsyncd_port user rsyncd_bwlimit verbose debug
 . ${solr_root}/bin/scripts-util
 
 # set up variables
@@ -31,16 +31,17 @@ log=${solr_root}/logs/rsyncd.log
 
 # define usage string
 USAGE="\
-usage: $prog [-d dir] [-p portnum] [-u username] [-v] [-V]
+usage: $prog [-d dir] [-p portnum] [-u username] [-b kbps] [-v] [-V]
        -d          specify directory holding index data
        -p          specify rsyncd port number
        -u          specify user to sudo to before running script
+       -b          specify a max transfer rate in kilobytes per second (defaults to 0 (no limit))
        -v          increase verbosity
        -V          output debugging info
 "
 
 # parse args
-while getopts d:p:u:vV OPTION
+while getopts d:p:u:b:vV OPTION
 do
     case $OPTION in
     d)
@@ -52,6 +53,9 @@ do
     u)
         user="$OPTARG"
         ;;
+    b)
+        rsyncd_bwlimit="$OPTARG"
+        ;;
     v)
         verbose="v"
         ;;
@@ -82,6 +86,12 @@ then
     fi
 fi
 
+# Set bwlimit to unlimited by default
+if [[ -z ${rsyncd_bwlimit} ]]
+then
+       rsyncd_bwlimit='0'
+fi
+
 dataDir
 
 logMessage started by $oldwhoami
@@ -119,7 +129,7 @@ log file = ${solr_root}/logs/rsyncd.log
     comment = Solr
 EOF
 
-rsync --daemon --port=${rsyncd_port} --config=${solr_root}/conf/rsyncd.conf
+rsync --daemon --port=${rsyncd_port} --bwlimit=${rsyncd_bwlimit} --config=${solr_root}/conf/rsyncd.conf
 
 # first make sure rsyncd is accepting connections
 i=1