diff options
Diffstat (limited to 'reproduce/analysis/bash')
| -rwxr-xr-x | reproduce/analysis/bash/download-multi-try | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/reproduce/analysis/bash/download-multi-try b/reproduce/analysis/bash/download-multi-try index dec2539..7a5f8f2 100755 --- a/reproduce/analysis/bash/download-multi-try +++ b/reproduce/analysis/bash/download-multi-try @@ -51,11 +51,13 @@ set -e -# Input arguments and necessary sanity checks. +# Input arguments and necessary sanity checks. Note that the 5th argument +# (backup servers) isn't mandatory. inurl="$3" outname="$4" lockfile="$2" downloader="$1" +backupservers="$5" if [ "x$downloader" = x ]; then echo "$0: downloader (first argument) not given."; exit 1; fi @@ -73,6 +75,13 @@ fi +# Separate the actual filename, to possibly use backup server. +urlfile=$(echo "$inurl" | awk -F "/" '{print $NF}') + + + + + # Try downloading multiple times before crashing. counter=0 maxcounter=10 @@ -107,8 +116,19 @@ while [ ! -f "$outname" ]; do if [ x"$lockfile" = xnolock ]; then if ! $downloader $outname $inurl; then rm -f $outname; fi else + # Try downloading from the requested URL. flock "$lockfile" bash -c \ "if ! $downloader $outname $inurl; then rm -f $outname; fi" + + # If it failed, try the backup server(s). + if [ ! -f "$outname" ]; then + if [ x"$backupservers" != x ]; then + for bs in "$backupservers"; do + flock "$lockfile" bash -c \ + "if ! $downloader $outname $bs/$urlfile; then rm -f $outname; fi" + done + fi + fi fi done |