MB-19899 bisect

#!/bin/bash

set -e

# Ensure we kill all processes in our group on unclean failure
trap "trap - SIGTERM && kill -- -$$" SIGINT SIGTERM

pillowfight_args="-U couchbase://127.0.0.1:12000/default --json --min-size 1000 --max-size 1000 --num-items 10000 --batch-size 1"


# Remove ep_perfsutie from 'all'
echo "set_target_properties(ep_perfsuite PROPERTIES EXCLUDE_FROM_ALL TRUE)" >> CMakeLists.txt

# If we don't already have it, cherry-pick in time_sync patch
if ! git merge-base --is-ancestor d23c7ea HEAD; then
    echo "* Cherry-picking time_sync patch (d23c7ea)"
    git cherry-pick -n d23c7ea
fi

# Adjust couchstore to C / C++ as necessary
# 1) C++ API used in ep-engine from 7fb3c5de4b7f79658f9a23e900894802a1a546b8
# 2) Stopped using close_db in ep-engine from 14697e2ace529974d9bbb12fe8173a6d751a98bf
if git merge-base --is-ancestor 14697e2ac HEAD; then
    echo "* Moving Couchstore to C++ API, without close_db (couchstore/master)"
    pushd ../couchstore
    git checkout couchbase/master
    popd
elif git merge-base --is-ancestor 7fb3c5de4b HEAD; then
    echo "* Moving Couchstore to C++ API, with close_db (couchstore/ec270f4)"
    pushd ../couchstore
    git checkout ec270f4
    popd
else
    echo "* Moving Couchstore to C API (78c0c80)"
    pushd ../couchstore
    git checkout 78c0c80
    popd
fi

# build
echo "* Building"
make -C .. -j32 >build.log || exit 125

# clear out ns_server's data
make -C ../ns_server dataclean

# Start cluster (in background)
echo "* Starting cluster"
pushd ../ns_server
./cluster_run 2> cluster_run.log &
#cluster_pid=$!

# initialise cluster
rm -f cluster_connect.log
while true; do
    if ./cluster_connect -n1 >>cluster_connect.log 2>&1; then
        break
    fi
    sleep 1
done
popd

# Define view
echo "* Defining view"
while true; do
    if curl "http://localhost:9500/default/_design/dev_foo" -X PUT -H 'Content-Type: application/json' -d '{"views":{"bar":{"map":"function (doc, meta) {\n emit(meta.id, null);\n}"}}}'; then
        break
    fi
    sleep 1
done

# populate with pillowfight (hardcoded sleep appears to be necessary otherwise get bad response from memcached :(
sleep 10
echo "* Populating bucket"
cbc-pillowfight ${pillowfight_args} --num-cycles 10000

# background workload with pillowfight (100 SET/s)
echo "* Start background workload"
cbc-pillowfight ${pillowfight_args} --no-population --rate-limit 100 --set-pct 100 > pillowfight.log &

# Now the numbers - give everything 10s to stabilize
sleep 10

echo "* Measuring latency"
ab -q -e query.csv -n200 "http://localhost:9500/default/_design/dev_foo/_view/bar?stale=false&limit=10&full_set=true" >ab.log
latency80=$(grep "80," query.csv | cut -d, -f 2)

#Cleanup
pkill -P $$
git reset --hard

echo
echo "Latency: $latency80"
if (( $(echo "$latency80 < 150" |bc -l) )); then
    echo "good"
    exit 0
elif (( $(echo "$latency80 > 200" |bc -l) )); then
    echo "BAD"
    exit 1
else
    echo "unknown"
    exit 125
fi