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#!/bin/bash
#
# WARNING!!!
# 1) Don't use this
# 2) If you do use this, only use it if your "ckpool's ckdb logfiles"
# (CCLs) are 100% certainly OK
# Data in the DB will be lost if the rollback requires reloading
# data that is missing from the CCLs
# 3) If you do use this, make sure ckdb is NOT running
# 4) The rollback is only for the tables that are generated from the CCLs
# If you need data from other tables, see tabdump.sql
# 5) If you need to reload missing data that may or may not be in the CCLs
# then you need to convince Kano to update the ckdb -y option to handle
# that, with the current db, and also add code to the -y option to
# update the DB
# i.e. the ckdb -y option needs updating
#
# The basic use of this script is for when something goes wrong with the
# database and the CCLs are OK - so you can roll back to before the
# database problem and reload all the data
#
# Deleting markersummaries would only be an option if you know for sure
# that all data is in the CCLs
# It would be ideal to do a markersummary table dump before a rollback
# However, -e will be OK if the CCLs aren't missing anything reqired for
# the reload
#
# In all cases, if data is missing between the start and end of the
# rollback, then the reload SEQ checking will report it, unless ...
# by coincidence the missing data is at the end of a ckpool sequence
# and no gaps exist in the data before the truncation point
# e.g. seqall goes from N..M then a new SEQ starts at 0..
# however if there actually was data after M, but all missing exactly up
# to before the SEQ restart 0 point, then ckdb couldn't know this unless
# the data was inconsistent
#
# -e will of course allow you to compare all but markersummary, before and
# after rolling back, by manually comparing the expired record with the
# new replacement unexpired record - but it deletes the markersummary data
# -e is untidy simply because it leaves around unnecesary data, if the
# reload after the rollback is not missing anything and succeeds
# -e deletes all the records that were already expired so you will lose
# the original DB history of those records, however a reload should
# regenerate a similar history
#
# -m is the same as -e except it doesn't touch markersummary at all
# -m will probably cause duplicate markersummary issues for ckdb
#
# -r ... use at your own risk :) - but is the best option if nothing is
# missing from your CCLs
# it simply deletes all reload data back to the specified point and
# that data should all reappear with a successful reload
#
usAge()
{
echo "usAge: `basename $0` [-n] -e|-r|-m workinfoid"
echo " Preferred option is just -e as long as you aren't missing reload data"
echo
echo " -n = use 'now()' instead of the date timestamp of now, for expiry date"
echo
echo " -e = rollback by deleteing expired data and expiring unexpired data,"
echo " but deleting markersummary"
echo
echo " -r = rollback by deleting all relevant data (expired or unexpired)"
echo " -m = rollback by deleteing expired data and expiring unexpired data,"
echo " but don't touch markersummary"
echo " N.B. -m is expected to cause problems with ckdb"
echo
echo " generates the sql on stdout"
echo
echo " Read `basename $0` for an explanation"
exit 1
}
#
idctl()
{
echo "\\echo 'update idcontrol $1'
update idcontrol
set lastid=(select max($1) from $2),
modifydate=$n,modifyby='$idn',
modifycode='$mc',modifyinet='$mi'
where idname='$1';"
}
#
process()
{
# so all stamps are exactly the same
now="`date +%s`"
idn="rollback_${wi}_`date -d "@$now" '+%Y%m%d%H%M%S%:::z'`"
mc="`basename $0`"
mi="127.0.0.1"
if [ "$usenow" ] ; then
n="now()"
else
n="'`date -u -d "@$now" '+%Y-%m-%d %H:%M:%S+00'`'"
fi
ex="expirydate = $n"
unex="expirydate > '6666-06-01'"
oldex="expirydate < '6666-06-01'"
#
if [ "$opt" = "-r" -o "$opt" = "-e" ] ; then
echo "\\echo 'delete markersummary'"
echo "delete from markersummary where markerid in"
echo " (select distinct markerid from workmarkers where workinfoidend >= $wi);"
fi
if [ "$opt" = "-r" ] ; then
echo "\\echo 'delete marks'"
echo "delete from marks where workinfoid >= $wi;"
echo "\\echo 'delete workmarkers'"
echo "delete from workmarkers where workinfoidend >= $wi;"
else
echo "\\echo 'delete/update marks'"
echo "delete from marks where $oldex and workinfoid >= $wi;"
echo "update marks set $ex where $unex and workinfoid >= $wi;"
echo "\\echo 'delete/update workmarkers'"
echo "delete from workmarkers where $oldex and workinfoidend >= $wi;"
echo "update workmarkers set $ex where $unex and workinfoidend >= $wi;"
fi
#
if [ "$opt" = "-r" ] ; then
echo "\\echo 'delete blocks'"
echo "delete from blocks where workinfoid >= $wi;"
echo "\\echo 'delete workinfo'"
echo "delete from workinfo where workinfoid >= $wi;"
else
echo "\\echo 'delete/update blocks'"
echo "delete from blocks where $oldex and workinfoid >= $wi;"
echo "update blocks set $ex where $unex and workinfoid >= $wi;"
echo "\\echo 'delete/update workinfo'"
echo "delete from workinfo where $oldex and workinfoid >= $wi;"
echo "update workinfo set $ex where $unex and workinfoid >= $wi;"
fi
#
if [ "$opt" = "-r" ] ; then
echo "\\echo 'delete miningpayouts'"
echo "delete from miningpayouts where payoutid in"
echo " (select distinct payoutid from payouts where workinfoidend >= $wi);"
echo "\\echo 'delete payments'"
echo "delete from payments where payoutid in"
echo " (select distinct payoutid from payouts where workinfoidend >= $wi);"
echo "\\echo 'delete payouts'"
echo "delete from payouts where workinfoidend >= $wi;"
else
echo "\\echo 'delete/update miningpayouts'"
echo "delete from miningpayouts where $oldex and payoutid in"
echo " (select distinct payoutid from payouts where workinfoidend >= $wi);"
echo "update miningpayouts set $ex where $unex and payoutid in"
echo " (select distinct payoutid from payouts where workinfoidend >= $wi);"
echo "\\echo 'delete/update payments'"
echo "delete from payments where $oldex and payoutid in"
echo " (select distinct payoutid from payouts where workinfoidend >= $wi);"
echo "update payments set $ex where $unex and payoutid in"
echo " (select distinct payoutid from payouts where workinfoidend >= $wi);"
echo "\\echo 'delete/update payouts'"
echo "delete from payouts where $oldex and workinfoidend >= $wi;"
echo "update payouts set $ex where workinfoidend >= $wi and $unex;"
fi
#
idctl markerid workmarkers
idctl paymentid payments
idctl payoutid payouts
# this makes sure the worker data is consistent - don't remove this
idctl workerid workers
}
#
if [ -z "$1" ] ; then
usAge
fi
#
if [ "$1" = "-?" -o "$1" = "-h" -o "$1" = "-help" -o "$1" = "--help" ] ; then
usAge
fi
#
usenow=""
if [ "$1" = "-n" ] ; then
usenow="y"
shift
fi
#
if [ "$1" != "-r" -a "$1" != "-e" -a "$1" != "-m" ] ; then
echo "ERR: Unknown p1='$1'"
usAge
fi
#
opt="$1"
shift
#
if [ -z "$1" ] ; then
echo "ERR: missing workinfoid"
usAge
fi
#
wi="$1"
#
process