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#!/bin/bash
# This script shows, via runnuing the benchmark, how
# the LibEuFin database connections are significantly
# shorter than the benchmark total time.
# For this reason, it can only be that LibEuFin opens
# and closes many PostgreSQL connections, as it is required
# by milestone #3.
set -eu
export HOW_MANY_WITHDRAWALS=100
service postgresql start
sudo -u postgres createuser -s root
# Activating the disconnection logs.
sudo -u postgres psql -q -c "ALTER SYSTEM SET log_disconnections = 'on'" -c "SELECT pg_reload_conf()" > /dev/null
# Converts AA:BB:CC.DDD to milliseconds.
convert_pg_time_to_ms () {
awk -F[.:] '{SECS=(60*60*$1)+(60*$2)+$3; MILLI=$4; TOTAL_MS=(SECS*1000)+MILLI; print TOTAL_MS}'
}
createdb talercheck
export LD_LIBRARY_PATH=/usr/local/lib
prepare_and_run () {
taler-unified-setup.sh \
-Wwemtns \
-c /exchange/src/benchmark/benchmark-cs.conf \
-u exchange-account-2 &> /check_ready.txt &
# Wait that the prep. went through.
echo -n Waiting the unified setup to complete..
READY="NO"
for i in `seq 100` true; do
if grep -q "<<READY>>" /check_ready.txt; then
READY="YES"
break
fi
echo -n "."; sleep 1
done
if test $READY = "YES"; then
echo "DONE"
else
cat /check_ready.txt
echo FAIL
exit 1
fi
echo Running the benchmark..
taler-exchange-benchmark \
-c /exchange/src/benchmark/benchmark-cs.conf.edited \
-u exchange-account-2 \
-L WARNING \
-n 1 \
-r $HOW_MANY_WITHDRAWALS
}
export -f prepare_and_run
/usr/bin/time -o /benchmark-wall-clock-time.txt --format=%e bash -c "prepare_and_run"
NEXUS_PID=$(cat /libeufin-nexus.pid)
SANDBOX_PID=$(cat /libeufin-sandbox.pid)
if test -z $NEXUS_PID; then
echo Could not find Nexus PID, failing.
exit 1
fi
if test -z $SANDBOX_PID; then
echo Could not find Sandbox PID, failing.
exit 1
fi
# Convert the wall clock time to milliseconds, to make
# it compatible with the format as GREPped through Postgres logs.
BENCHMARK_TOT_MS=$(awk -F. '{t=($1 * 1000 + $2 * 10)} END {print t}' /benchmark-wall-clock-time.txt)
NEXUS_LONGEST_DB_SESSION_MS=$(grep disconnection < /var/log/postgresql/postgresql-15-main.log | grep $NEXUS_PID | grep -o "session time:.*$" | grep -o [0-9]:[0-9][0-9]:[0-9][0-9]\.[0-9][0-9][0-9] | convert_pg_time_to_ms | sort -n | tail -n 1)
SANDBOX_LONGEST_DB_SESSION_MS=$(grep disconnection < /var/log/postgresql/postgresql-15-main.log | grep $SANDBOX_PID | grep -o "session time:.*$" | grep -o [0-9]:[0-9][0-9]:[0-9][0-9]\.[0-9][0-9][0-9] | convert_pg_time_to_ms | sort -n | tail -n 1)
if test $NEXUS_LONGEST_DB_SESSION_MS -gt $BENCHMARK_TOT_MS; then
echo Nexus had a DB session longer than the benchmark itself, failing.
exit 1
fi
if test $SANDBOX_LONGEST_DB_SESSION_MS -gt $BENCHMARK_TOT_MS; then
echo Sandbox had a DB session longer than the benchmark itself, failing.
exit 1
fi
NEXUS_TIME_PORTION=$(echo "($NEXUS_LONGEST_DB_SESSION_MS / $BENCHMARK_TOT_MS) * 100" | bc -lq | sed 's/^\./0./')
SANDBOX_TIME_PORTION=$(echo "($SANDBOX_LONGEST_DB_SESSION_MS / $BENCHMARK_TOT_MS) * 100" | bc -lq | sed 's/^\./0./')
# Here: the further from 1 the better.
echo Nexus longest DB session is $NEXUS_TIME_PORTION percent of the total benchmark time.
echo Sandbox longest DB session is $SANDBOX_TIME_PORTION percent of the total benchmark time.
# Now show the total space occupied by the database.
# Although that's a _total_ estimate, it'll anyhow show
# that _also_ libeufin has reasonable data usage.
TOTAL_DB_SPACE=$(echo "SELECT pg_size_pretty(pg_database_size('talercheck'))" | psql -d talercheck | grep "^ [0-9]" | tr -d "[:blank:]")
echo "The total space occupied by the database for $HOW_MANY_WITHDRAWALS withdrawals is $TOTAL_DB_SPACE"
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