#!/bin/bash

ME_CREDS="--os-username=$ME_OS_USERNAME \
	--os-password=$ME_OS_PASSWORD \
	--os-tenant-name=$ME_OS_TENANT_NAME \
	--os-tenant-id=$ME_OS_TENANT_ID \
	--os-auth-url=$ME_OS_AUTH_URL"

IAD2_CREDS="--os-username=$IAD2_OS_USERNAME \
	--os-password=$IAD2_OS_PASSWORD \
	--os-tenant-name=$IAD2_OS_TENANT_NAME \
	--os-tenant-id=$IAD2_OS_TENANT_ID \
	--os-auth-url=$IAD2_OS_AUTH_URL"

function stop_vm {
        status=$(nova $ME_CREDS show $vm --minimal | grep '^| status ' | awk '{print $4}')
	echo "Stopping ${vm}..."
	nova $ME_CREDS stop $vm
	while [[ $status != "SHUTOFF" ]]; do
		status=$(nova $ME_CREDS show $vm --minimal | grep '^| status ' | awk '{print $4}')
		sleep 10
	done
	echo "Successfully stopped $vm!"
}

function convert_to_image {
	volume_id=""
	status=""
	volume_id=$(nova $ME_CREDS show $vm | grep 'os-extended-volumes:volumes_attached' | cut -d\" -f4)
	if [[ $volume_id == "" ]]; then
		echo "Unable to determine backing volume (was this an ephemeral VM?)"
		exit 1
	fi
	echo "Uploading volume to image. This may take a very long time..."
	image=$(cinder $ME_CREDS upload-to-image --force True $volume_id ${vm}-snapshot | grep ' image_id ' | awk '{print $4}')
	while [[ $status != "active" ]]; do
		echo "Current status: $status"
		status=$(glance image-show $image | grep '^| status ' | awk '{print $4}')
		echo "Checking status again in 60 seconds..."
		sleep 60
	done

}

function download_image {
	echo "Downloading image $image from ME..."
	glance --os-image-api-version 1 $ME_CREDS image-download --file ${vm}-snapshot.raw --progress $image
	echo "Successfully downloaded $image from ME!"
	echo "Removing image snapshot $image from ME..."
#	glance $ME_CREDS image-delete $image
	echo "Successfully delete image ${image} from ME!"
}

function upload_image {
	new_image=""
	status=""
	echo "Uploading image $image to IAD2..."
	glance $IAD2_CREDS image-create --name ${vm}-snapshot \
		--disk-format raw \
		--visibility private \
		--container-format bare \
		--file ${vm}-snapshot.raw
	new_image=$(glance $IAD2_CREDS image-list | grep ${vm}-snapshot | awk '{print $2}')
	if [[ $new_image == "" ]]; then
		echo "New image not found (failed in image creation?)."
		exit 1
	fi
	while [[ $status != "active" ]]; do
		status=$(glance $IAD2_CREDS image-show $new_image | grep '^| status ' | awk '{print $4}')
		sleep 10
	done
	echo "Successfully uploaded image $image to IAD2"
}

ALL_ME_VMS=$(nova $ME_CREDS list | grep -v '^+' | sed -n '1!p' | awk '{print $2}')

for vm in $ALL_ME_VMS; do
	echo "Begin migration of $vm from ME (yes/no)?"
	read answer
	if [[ $answer == "yes" ]]; then
		stop_vm
		convert_to_image
		download_image
		upload_image
	fi
done