#!/bin/bash
# Usage: storage-monster-migration.sh
#
# This can be used for dev/localhost and multi-VM servers, HOWEVER:
# for multi VM the following manual steps MUST be undertaken before running this script:
#   1. Set disco for the server in question to "maintenance mode"
#   2. Deploy a release
#   3. Run this script
#   4. Take server out of maint mode in disco
#   5. (rev2) Mount LC b1 from {somewhere} to /sequencelogic/sm/LC/b1 
#   6. (rev2) Mount L3 bucket(s) to /sequencelogic/sm/L3/{buckets} 
#   7. (rev2) Mount VR bucket(s) to /sequencelogic/sm/VR/{buckets} 
#
# What this does:
#   A. Creates directories as necessary
#   B. Generates default pool configs (basically L2 is setup and online, everything else is disabled)
#   C. Moves old 1.2.0 /sequencelogic/sgws/mount/?????? dirs to /sequencelogic/sm/L2/b1/??????
#   D. Modifies /sequencelogic/config/${SEQUENCE_LOGIC_ENV}.conf.json:
#		a. adds sm-home and pools-home to storageGuard if not already present
#		b. modifies L2 config to indicate 'b1' (although this gets overridden by VAN quotas)
#	E. Runs sequencelogic-reset-van-quotas.sh
#	F. Runs sequencelogic-reset-van-policies.sh
#	G. Modifies all old-style "http" location bucket ID values to use "b1" for L2_FS

source /sequencelogic/bin/sequencelogic-helpers.sh

echo "DEPRECATED BUT LEFT IN PLACE AS FUTURE SLI BUILDS MIGHT WANT TO DO A MIGRATION"
exit 1

SRC=/sequencelogic/sgws/mount
DEST=/sequencelogic/sm

if [ ! -d ${DEST} ]; then
	mkdir ${DEST}
fi

# compatibility with old regime... TODO use a different tmp location
mkdir -p /sequencelogic/sgws/mount/tmp

POOLS=/sequencelogic/config/pools
TYPES="LC L2 L3 VR"
# must manually mount/link L3/VR!
BUCKET="b1"
NOW=`date +"%Y-%m-%dT%H:%M:%S"`

if [ ! -d ${POOLS} ]; then
	mkdir -p ${POOLS}
fi

# real tmp
mkdir -p ${POOLS}/tmp 

for t in ${TYPES}; do
	# data directory
	ddir="${DEST}/${t}/${BUCKET}"
	if [ ! -d "${DEST}/${t}" ]; then
		mkdir -p "${DEST}/${t}"
		# create b1 in all pools if single VM
		if [ $t != "L2" ]; then
			case "$SEQUENCE_LOGIC_ENV" in
			dev|demo|localhost) mkdir -p "${ddir}";;
			*) echo "Manually mount and create buckets for LC/L3/VR multi-VM environments!!!";;
			esac
		fi
	fi
	
	# treat existing sgws/mount as LC_FS
	if [ $t = "L2" ]; then
		if [ ! -d ${ddir}/000000 ]; then
			echo "Linking ${SRC} to ${ddir}" 
			ln -s ${SRC} ${ddir}
		fi
		# tim sanity
		if [ ! -d ${ddir}/000000 ]; then
			echo "No such directory: ${ddir}/000000"
			exit 1
		fi
		
		desc="$t primary filestore"
		enab=true
		autoro=0.99
		size=1.0
		low=1.0
		high=1.0
	elif [ $t = "LC" ]; then
		desc="MRU file cache"
		enab=false
		autoro=0.99
		size=1048576
		low=0.75
		high=0.90
	else
		desc="$t secondary filestore"
		enab=false
		autoro=0.99
		size=1.0
		low=1.0
		high=1.0
	fi
	
	# configs
	
	echo "*** Creating pool configuration: ${POOLS}/${t}_FS-pool.conf.json ***"
	cat > ${POOLS}/${t}_FS-pool.conf.json <<EOF
// DO NOT remove this comment line
// Pool configuration auto-generated on: ${NOW}
{
	"description": "${desc}",
	"name": "${t}_FS",
	"enabled": ${enab},
	"saved": "${NOW}",
	"modifiedby": "${USER}",
	"readpriority": 1.0,
	"buckets": [
		{
			"id": "${BUCKET}",
			"type": "local-storage",
			"status": "online",
			// low/high _water apply only to single bucket LC environments and are ignored elsewhere
			"low_water": ${low},
			"high_water": ${high},
			// autoro is a decimal % at which point this bucket becomes readonly
			"autoro": ${autoro},
			// size is either a decimal value <= 1.0 indicating a percentage to use,
			// or an absolute value > 1.0 indicating max # bytes to use
			"size": ${size},
			"writepriority": 1.0
		}
	]
}	
EOF

done

# /sequencelogic/config/${SEQUENCE_LOGIC_ENV}.conf.json updates

smHome=`getConfigurationValue storageGuard.sm-home`
echo "*** storageGuard.sm-home is set to: ${smHome} *** "
if [ "$smHome" = "" -o "$smHome" = "null" ]; then
	echo "*** Editing ${SEQUENCE_LOGIC_ENV}.conf.json *** "
	cat /sequencelogic/config/${SEQUENCE_LOGIC_ENV}.conf.json | awk '
		/"mount-home"/	{ 
						  printf "\t\t// mount-home deprecated as of 1.2.2\n"
						  printf "\t\t\"sm-home\": \"/sequencelogic/sm\",\n"
						  printf "\t\t\"pools-home\": \"/sequencelogic/config/pools\",\n"
						}
		/"type": "L2"/	{
						  sub(/"bucket_id": "[^"]+"/, "\"bucket_id\": \"b1\"")
						}
						{ print $0 }
	' > /sequencelogic/config/${SEQUENCE_LOGIC_ENV}.conf.json.1.2.2
	mv /sequencelogic/config/${SEQUENCE_LOGIC_ENV}.conf.json /sequencelogic/config/${SEQUENCE_LOGIC_ENV}.conf.json.1.2.0
	mv /sequencelogic/config/${SEQUENCE_LOGIC_ENV}.conf.json.1.2.2 /sequencelogic/config/${SEQUENCE_LOGIC_ENV}.conf.json
fi

# DB updates
echo "*** Update L2 bucket_id values *** "
bkt=${BUCKET}
#bkt=http://dev.ionu.com:8080
mongoExec "db.sgnode.update({'loc.type': 'L2'}, {\$set: {'loc.$.bucket_id': '${bkt}'}}, {multi:true})"
mongoExec "db.sgnode.dropIndexes()"
mongoExec "db.teampolicy.update({}, {\$set:{plan_id:'SMN_BASIC'}}, {multi:true})"

# Quotas
/sequencelogic/bin/sequencelogic-reset-van-quotas.sh

# Policies
/sequencelogic/bin/sequencelogic-reset-van-policies.sh

# Teams
/sequencelogic/bin/sequencelogic-reset-teams.sh

echo "*** Migration complete ***"
exit 0