#!/bin/bash

# -------------------------------------------------------------------------- #
# Copyright 2002-2021, 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.                                             #
#--------------------------------------------------------------------------- #
# PREMIGRATE SOURCE DST remote_system_dir vmid dsid template system_ds_mad
# POSTMIGRATE SOURCE DST remote_system_dir vmid dsid template system_ds_mad
#  - SOURCE is the host where the VM is running
#  - DST is the host where the VM is to be migrated
#  - remote_system_dir is the path for the VM home in the system datastore
#  - vmid is the id of the VM
#  - dsid is the target datastore
#  - template is the template of the VM in XML and base64 encoded
#  - system_ds_mad flag if called by other SYSTEM_DS TM_MAD

SRC_HOST="$1"
DST_HOST="$2"
DST_PATH="$3"
VM_ID="$4"
DS_ID="$5"
TEMPLATE_64=$(cat)
DST_DIR=`dirname $DST_PATH`
#--------------------------------------------------------------------------------

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

source $TMCOMMON

#--------------------------------------------------------------------------------

ONEVM_XML=$(onevm show $VM_ID -x)
SOURCE_DISK=($(xmlstarlet sel -t -v '/VM/TEMPLATE/DISK/SOURCE' <<< "$ONEVM_XML"))
PERS_DISK=($(xmlstarlet sel -t -v '/VM/TEMPLATE/DISK/PERSISTENT' <<< "$ONEVM_XML"))
tm_mad_flag=$(xmlstarlet sel -t -v '/VM/TEMPLATE/TM_MAD_SYSTEM' <<< "$ONEVM_XML")

if [ "$tm_mad_flag" == "qcow2" ]; then
    for disk_s in ${SOURCE_DISK[*]}; do
        if [ "$PERS_DISK" != "YES" ]; then
            sudo chown oneadmin:oneadmin $disk_s
        fi
    done
fi

if [ "$SRC_HOST" == "$DST_HOST" ]; then
    log "Not moving $SRC_HOST to $DST_HOST, they are the same host"
    exit 0
fi

#--------------------------------------------------------------------------------
ssh_exec_and_log "$DST_HOST" "export PATH=$PATH:/sbin ; pdp-one $DST_DIR ; pdp-one $DST_PATH ; pdp-one $DST_PATH 1" \
    "Error pdp label for  $DST_PATH in $DST_HOST"

migrate_other "$@"
