#!/bin/bash

# fcs_pre_restore.bash - Final Cut Server Pre Restore Script
# Written by Matt Geller, Meta Media Creative Technologies
# (800) 305-2163 | www.metamediatech.com
# Use of this script in total or in part is permitted as long as credit to the author is preserved.

# Abstract:
# This script fires before a Final Cut Server Restore job.
# It receives a single variable from Final Cut Server, which is the full path
# of the asset's Archive Copy, or where the archived Primary Representation used to reside,
# before it was further archived by NetVault.
# It then queries the file located at nvcatalogpath and receives the NetVault Backup Job Title.
# It then remotely logs into the facility BakBone NetVault Server and executes
# first a nvsetcreate, which defines the previous backup job to be restored.
# It then executes a nvjobcreate, which defines a job for the restore set and submits it.

# usage from Final Cut Server pre-restore command metadata field:
# /usr/metamedia/fcs_pre_restore.bash
# Note:	No additional varibles are specified, since Final Cut Servers allows none when scripts
#		are triggered from a Device's pre-restore command.  It does pass the asset's Archive Copy path
#		as $1.

# global variables
# Note:	We are logging into the NetVault Server with RSA-authenticated ssh, 
# 		which would need to be setup before secure commands can be executed on this server without requiring a password.
nvlogin="ssh root@172.16.1.10"
# The NetVault name is the name of your NetVault Server, according to the NVAdmin GUI application.
nvname="server1"
# The NetVault Catalog Path is the path and file on the Final Cut Server in which we will dump a line
# of text to correlate the full path of the file to its NetVault Backup Job Title. 
# We grep out and use this line of text during restore in order to identify the correct job to specify when requesting a restore of the file.
nvcatalogpath="/usr/metamedia/nv_catalog.out"
# The NetVault Job ID Path is the path and file on the Final Cut Server in which NetVault will be dumping a line
# of text at -job start- which contains the NetVault Job Title and the Job ID that it assigned to the Job. 
# We can use this to derive the NetVault Job ID for the Job we submit in this script.
nvjobidpath="/usr/metamedia/nv_jobid.out"
# The NetVault Job Status Path is the path and file on the Final Cut Server in which NetVault will be dumping a line
# of text at -job completion- which contains the NetVault Job Title, Job ID and Job Status for a completed Job. 
# We can use this to determine when the Job is complete and if it was successful.
nvjobstatuspath="/usr/metamedia/nv_jobstatus.out"
# A NetVault Restore Advanced Options Set is created within NVAdmin and specifies additional advanced options
# for the restore job, including firing off emails for notification after the job is complete.
nvrestoreadvoptset="MMCT_ADVOPTEML"

# variables passed from Final Cut Server
nvpath=$1

# derived variables
nvbackupjobtitle=`grep "$nvpath" $nvcatalogpath | tail -1 | awk '{ print $NF }'`
assetid=`echo $nvbackupjobtitle | sed s/NVBJ//`
nvrestoreselectionset=NVRS$assetid
nvrestorejobtitle=NVRJ$assetid

# Create the selection set for the restore
$nvlogin "/usr/netvault/util/nvsetcreate -setname $nvrestoreselectionset -type RS -client \""$nvname"\" -plugin \"File System\" -title $nvbackupjobtitle -include \""$nvpath"\" -restoreoption NVFS_OPT_OVERNEW=FALSE"

# Create the job and submit it
$nvlogin "/usr/netvault/util/nvjobcreate -jobtitle $nvrestorejobtitle -type restore -selectionsetname $nvrestoreselectionset -advoptssetname $nvrestoreadvoptset -submit"

# Wait a bit, and then get the Job ID from the just-created Job Title
sleep 10
nvjobid=`grep "$nvrestorejobtitle" $nvjobidpath | tail -1 | awk '{ print $NF }'`

# Keep asking nv_jobstatus.out if a report for our job has come over, and if not, wait a little while and ask again.
nvstatusresult=`grep " $nvjobid " $nvjobstatuspath`

while [ ${#nvstatusresult} = 0 ]; do
	echo "waiting for job status..."
	sleep 5
	# Now refresh our nvstatusresult
	nvstatusresult=`grep " $nvjobid " $nvjobstatuspath`
done

# If we have a successful backup, then we need to end the script and let Final Cut Server pick up its file for restore.
# But if we don't, we exit 1 and don't touch the file.
if [ `echo $nvstatusresult | awk '{ print $NF }'` = "SUCCEEDED" ]; then
	echo "Success! $nvstatusresult"
else
	exit 1
fi

exit 0