1 #!/bin/bash

     2 # archive.sh - Made for Puppi

     3 

     4 # Sources common header for Puppi scripts

     5 . $(dirname $0)/header || exit 10

     6 

     7 # Show help

     8 showhelp () {

     9     echo "This script is used to backup or restore contents to/from puppi archivedir"

    10     echo "It has the following options:"

    11     echo "-b <backup_source> - Backups the files to be changed in the defined directory"

    12     echo "-r <recovery_destination> - Recovers file to the provided destination"

    13     echo "-s <copy|move> - Specifies the backup strategy (move or copy files)"

    14     echo "-t <tag> - Specifies a tag to be used for the backup"

    15     echo "-d <variable> - Specifies the runtime variable that defines the predeploy dir"

    16     echo "-c <yes|no> - Specifies if you want compressed (tar.gz) archives. Default: yes"

    17     echo "-o 'options' - Specifies the rsync options to use during backup. Use it to specify custom "

    18     echo "               exclude patterns of files you don't want to archive, for example"

    19     echo "-m <full|diff> - Specifies the backup type: 'full' backups all the files in backup_source,"

    20     echo "                 'diff' backups only the files deployed"

    21     echo "-n <number> - Number of copies of backups to keep on the filesystem. Default 5"

    22     echo 

    23     echo "Examples:"

    24     echo "archive.sh -b /var/www/html/my_app -t html -c yes"

    25 }

    26 

    27 # Arguments check

    28 if [ "$#" = "0" ] ; then

    29     showhelp

    30     exit

    31 fi

    32 

    33 # Default settings

    34 compression=yes

    35 backuptag=all

    36 strategy=copy

    37 backupmethod=full

    38 bakret=5

    39 

    40 while [ $# -gt 0 ]; do

    41   case "$1" in

    42     -b)

    43       backuproot=$2

    44 #      [ $deploy_root ] && backuproot=$deploy_root # This is needed to allow override of $deploy_root via puppi cmd. But breaks on puppi::project::maven

    45       action=backup

    46       shift 2 ;;

    47     -r)

    48       backuproot=$2

    49 #      [ $deploy_root ] && backuproot=$deploy_root # This is needed to allow override of $deploy_root via puppi cmd. But breaks on puppi::project::maven

    50       action=recovery

    51       shift 2 ;;

    52     -t)

    53       backuptag=$2

    54       shift 2 ;;

    55     -s)

    56       case "$2" in

    57         mv) strategy="move" ;;

    58         move) strategy="move" ;;

    59         *) strategy="copy" ;;

    60       esac

    61       shift 2 ;;

    62     -m)

    63       case "$2" in

    64         diff) backupmethod="diff" ;;

    65         *) backupmethod="full" ;;

    66       esac

    67       shift 2 ;;

    68     -c)

    69       case "$2" in

    70         yes) compression="yes" ;;

    71         y) compression="yes" ;;

    72         *) compression="none" ;;

    73       esac

    74       shift 2  ;;

    75     -d)

    76       predeploydir="$(eval "echo \${$(echo $2)}")"

    77       shift 2 ;;

    78     -o) 

    79       rsync_options=$2

    80       shift 2 ;;

    81     -n)

    82       bakret=$2

    83       shift 2 ;;

    84     *)

    85       showhelp

    86       exit

    87       ;;

    88   esac

    89 done

    90 

    91 

    92 # Backup and Restore functions

    93 backup () {

    94     mkdir -p $archivedir/$project/$tag/$backuptag

    95     if [ $archivedir/$project/latest ] ; then

    96         rm -f $archivedir/$project/latest

    97     fi

    98     ln -sf $archivedir/$project/$tag $archivedir/$project/latest

    99 

   100     filelist=$storedir/filelist

   101     cd $predeploydir

   102     find . | cut -c 3- | grep -v "^$" > $filelist

   103 

   104     if [ "$strategy" = "move" ] ; then 

   105         for file in $(cat $filelist) ; do

   106             mv $backuproot/$file $archivedir/$project/$tag/$backuptag/

   107         done

   108         if [ "$backupmethod" = "full" ] ; then

   109             rsync -a $rsync_options $backuproot/ $archivedir/$project/$tag/$backuptag/

   110         fi

   111     else

   112         if [ "$backupmethod" = "full" ] ; then

   113             rsync -a $rsync_options $backuproot/ $archivedir/$project/$tag/$backuptag/

   114         else

   115             rsync -a $rsync_options --files-from=$filelist $backuproot/ $archivedir/$project/$tag/$backuptag/

   116         fi

   117     fi

   118 

   119     if [ "$compression" = "yes" ] ; then

   120         cd $archivedir/$project/$tag/$backuptag/

   121         tar -czf ../$backuptag.tar.gz .

   122         cd $archivedir/$project/$tag/

   123         rm -rf $archivedir/$project/$tag/$backuptag/

   124     fi

   125 }

   126 

   127 recovery () {

   128     if [ ! $rollbackversion ] ; then

   129         echo "Variable rollbackversion must exist!"

   130         exit 2 

   131     fi

   132 

   133     if [ -d $archivedir/$project ] ; then

   134         cd $archivedir/$project

   135     else 

   136         echo "Can't find archivedir for this project"

   137         exit 2

   138     fi

   139 

   140     if [ "$compression" = "yes" ] ; then

   141         cd $backuproot/

   142         tar -xzf $archivedir/$project/$rollbackversion/$backuptag.tar.gz .

   143     else 

   144         rsync -a $rsync_options $rollbackversion/$backuptag/* $backuproot

   145     fi

   146 

   147 }

   148 

   149 delete_old () {

   150     # We don't count the "latest" symlink

   151     bakret=$(expr $bakret + 1 )

   152 

   153     cd $archivedir/$project

   154 

   155     ddirs=$(ls -1p 2>/dev/null | wc -l)

   156     while [ $ddirs -gt $bakret ]

   157     do

   158         victim=$(ls -tr 2>/dev/null | head -1)

   159         rm -rf $victim && echo "Deleted old $archivedir/$project/$victim"

   160         ddirs=$(ls -1p 2>/dev/null | wc -l)

   161     done

   162 }

   163 

   164 # Action!

   165 case "$action" in

   166     backup) backup ; delete_old ;;

   167     recovery) recovery ;;

   168 esac