#!/bin/bash

# -------------------------------------------------------------------------- #
# Copyright 2002-2015, OpenNebula Project (OpenNebula.org), C12G Labs        #
#                                                                            #
# Licensed under the Apache License, Version 2.0 (the "License"); you may    #
# not use this file except in compliance with the License. You may obtain    #
# a copy of the License at                                                   #
#                                                                            #
# http://www.apache.org/licenses/LICENSE-2.0                                 #
#                                                                            #
# Unless required by applicable law or agreed to in writing, software        #
# distributed under the License is distributed on an "AS IS" BASIS,          #
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   #
# See the License for the specific language governing permissions and        #
# limitations under the License.                                             #
#--------------------------------------------------------------------------- #

# clone fe:SOURCE host:remote_system_ds/disk.i vmid dsid
#   - fe is the front-end hostname
#   - SOURCE is the path of the disk image in the form DS_BASE_PATH/disk
#   - host is the target host to deploy the VM
#   - remote_system_ds is the path for the system datastore in the host
#   - vmid is the id of the VM
#   - dsid is the target datastore (0 is the system datastore)

SRC=$1
DST=$2

VMID=$3
DSID=$4

if [ -z "${ONE_LOCATION}" ]; then
    TMCOMMON=/var/lib/one/remotes/tm/tm_common.sh
    VMWARERC=/etc/one/vmwarerc
else
    TMCOMMON=$ONE_LOCATION/var/remotes/tm/tm_common.sh
    VMWARERC=$ONE_LOCATION/etc/vmwarerc
fi

. $TMCOMMON

#-------------------------------------------------------------------------------
# Retrieve needed information, Example (same for SRC)
#  DST       : esx1:/vmfs/volumes/105/90/disk.0
#  SRC       : one:/vmfs/volumes/104/84045f4a
#  DST_PATH  : /vmfs/volumes/105/90/disk.0
#  DST_DIR   : /vmfs/volumes/105/90/
#  DST_HOST  : esx1
#
#  DISK_TYPE: CDROM if it is a cd (not a directory)
#-------------------------------------------------------------------------------

SRC_PATH=`arg_path $SRC`
DST_PATH=`arg_path $DST`

DST_HOST=`arg_host $DST`
DST_DIR=`dirname $DST_PATH`

DISK_TYPE=$(disk_type)

#-------------------------------------------------------------------------------
# Clone (cp) SRC into DST
#-------------------------------------------------------------------------------

log "Cloning $SRC in $DST"

CLONESCRIPT=$(cat <<EOF
cd $DST_DIR

export PATH=/usr/sbin:/sbin:\$PATH

if [ "$DISK_TYPE" != "CDROM" ]; then
  if [ ! -d $DST_PATH ]; then
    mkdir -p $DST_PATH
  fi

  $VMKFSTOOLS -U $DST_PATH/disk.vmdk
  rm -f $DST_PATH/*

  $VMKFSTOOLS -i $SRC_PATH/disk.vmdk -d thin $DST_PATH/disk.vmdk
else
  if [ ! -d $DST_DIR ]; then
   mkdir -p $DST_DIR
  fi

  rm -f $DST_PATH

  cp $SRC_PATH $DST_PATH

  rm -f $DST_PATH.iso
  ln -s $DST_PATH $DST_PATH.iso
fi
EOF
)

ssh_exec_and_log $DST_HOST "$CLONESCRIPT" "Error cloning $SRC to $DST"

exit 0
