#!/bin/bash

# -------------------------------------------------------------------------- #
# Copyright 2002-2017, OpenNebula Project, OpenNebula Systems                #
#                                                                            #
# 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.                                             #
#--------------------------------------------------------------------------- #

###############################################################################
# This script is used to copy a VM image (SRC) to the image repository as DST
# Several SRC types are supported
###############################################################################
# -------- Set up the environment to source common tools & conf ------------

if [ -z "${ONE_LOCATION}" ]; then
    LIB_LOCATION=/usr/lib/one
else
    LIB_LOCATION=$ONE_LOCATION/lib
fi

. $LIB_LOCATION/sh/scripts_common.sh

DRIVER_PATH=$(dirname $0)
source ${DRIVER_PATH}/../libfs.sh

# -------- Get cp and datastore arguments from OpenNebula core ------------

DRV_ACTION=$1
ID=$2

XPATH="${DRIVER_PATH}/../xpath.rb -b $DRV_ACTION"

unset i XPATH_ELEMENTS

while IFS= read -r -d '' element; do
    XPATH_ELEMENTS[i++]="$element"
done < <($XPATH     /DS_DRIVER_ACTION_DATA/DATASTORE/BASE_PATH \
                    /DS_DRIVER_ACTION_DATA/IMAGE/DATASTORE_ID \
                    /DS_DRIVER_ACTION_DATA/DATASTORE/TEMPLATE/BRIDGE_LIST \
                    /DS_DRIVER_ACTION_DATA/IMAGE/CLONING_ID)

unset i

BASE_PATH="${XPATH_ELEMENTS[i++]}"
DS_ID="${XPATH_ELEMENTS[i++]}"
BRIDGE_LIST="${XPATH_ELEMENTS[i++]}"
SRC_ID="${XPATH_ELEMENTS[i++]}"

OUTPUT=$(oneimage show -x ${SRC_ID})
TMP=${OUTPUT#*<DATASTORE_ID>}
SRC_DS_ID=${TMP%</DATASTORE_ID>*}

set_up_datastore "$BASE_PATH" "$RESTRICTED_DIRS" "$SAFE_DIRS"

LV_NAME="lv-one-image-${ID}"
VG_NAME="vg-one-${DS_ID}"
SRC_VG_NAME="vg-one-${SRC_DS_ID}"
DEV="/dev/${VG_NAME}/${LV_NAME}"
SRC_DEV="/dev/${SRC_VG_NAME}/lv-one-image-${SRC_ID}"

# ------------ Copy the image to the repository -------------

# rbt: BREST-2142

if [ -n "$BRIDGE_LIST" ]; then
    DST_HOST=`get_destination_host $ID`
    DST_LVM=$(cat <<EOF
        set -e -o pipefail
        export PATH=/usr/sbin:/sbin:\$PATH
        SIZE=\$($SUDO lvdisplay --units m -o lv_size --nosuffix --noheadings -C $SRC_DEV | sed -e 's/^[[:space:]]*//')
        VOLUME_CHECK=\$($SUDO lvs ${SRC_VG_NAME}/lv-one-image-${SRC_ID} -o lv_active | awk 'NR > 1 {print \$1}')
        if [[ \$VOLUME_CHECK != "active" ]]; then
            $SUDO $LVCHANGE -ay "${SRC_VG_NAME}/lv-one-image-${SRC_ID}"
        fi
        $SUDO $LVCREATE -L\${SIZE}M -n $LV_NAME $VG_NAME -y
        $DD if=${SRC_DEV} of=${DEV} bs=1M
EOF
)
    ssh_exec_and_log "$DST_HOST" "$DST_LVM" "Error create ${DEV}"
else
    SIZE=`$SUDO lvdisplay --units m -o lv_size --nosuffix --noheadings -C $SRC_DEV | sed -e 's/^[[:space:]]*//' 2>/dev/null`
    #rbt: to finish fix need somehow add image deactivation to raft/vip.sh
    VOLUME_CHECK=$SUDO lvs ${SRC_VG_NAME}/lv-one-image-${SRC_ID} -o lv_active | awk 'NR > 1 {print $1}' 2>/dev/null
    if [[ $VOLUME_CHECK != "active" ]]; then
        $SUDO $LVCHANGE -ay "${SRC_VG_NAME}/lv-one-image-${SRC_ID}"
    fi
    $SUDO $LVCREATE -L${SIZE}M -n $LV_NAME $VG_NAME -y >/dev/null 2>&1
    exec_and_log "$DD if=${SRC_DEV} of=${DEV} bs=1M" "Error create ${DEV}"
fi

echo "$DEV"
