ClickHouse/docker/test/fuzzer/run-fuzzer.sh
2021-09-03 16:13:13 +00:00

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#!/bin/bash
# shellcheck disable=SC2086,SC2001
set -eux
set -o pipefail
trap "exit" INT TERM
# The watchdog is in the separate process group, so we have to kill it separately
# if the script terminates earlier.
trap 'kill $(jobs -pr) ${watchdog_pid:-} ||:' EXIT
stage=${stage:-}
script_dir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
echo "$script_dir"
repo_dir=ch
BINARY_TO_DOWNLOAD=${BINARY_TO_DOWNLOAD:="clang-12_debug_none_bundled_unsplitted_disable_False_binary"}
function clone
{
# The download() function is dependent on CI binaries anyway, so we can take
# the repo from the CI as well. For local runs, start directly from the "fuzz"
# stage.
rm -rf ch ||:
mkdir ch ||:
wget -nv -nd -c "https://clickhouse-test-reports.s3.yandex.net/$PR_TO_TEST/$SHA_TO_TEST/repo/clickhouse_no_subs.tar.gz"
tar -C ch --strip-components=1 -xf clickhouse_no_subs.tar.gz
ls -lath ||:
}
function download
{
wget -nv -nd -c "https://clickhouse-builds.s3.yandex.net/$PR_TO_TEST/$SHA_TO_TEST/clickhouse_build_check/$BINARY_TO_DOWNLOAD/clickhouse" &
wget -nv -nd -c "https://clickhouse-test-reports.s3.yandex.net/$PR_TO_TEST/$SHA_TO_TEST/repo/ci-changed-files.txt" &
wait
chmod +x clickhouse
ln -s ./clickhouse ./clickhouse-server
ln -s ./clickhouse ./clickhouse-client
# clickhouse-server is in the current dir
export PATH="$PWD:$PATH"
}
function configure
{
rm -rf db ||:
mkdir db ||:
cp -av --dereference "$repo_dir"/programs/server/config* db
cp -av --dereference "$repo_dir"/programs/server/user* db
# TODO figure out which ones are needed
cp -av --dereference "$repo_dir"/tests/config/config.d/listen.xml db/config.d
cp -av --dereference "$script_dir"/query-fuzzer-tweaks-users.xml db/users.d
}
function watchdog
{
sleep 3600
echo "Fuzzing run has timed out"
for _ in {1..10}
do
# Only kill by pid the particular client that runs the fuzzing, or else
# we can kill some clickhouse-client processes this script starts later,
# e.g. for checking server liveness.
if ! kill $fuzzer_pid
then
break
fi
sleep 1
done
kill -9 -- $fuzzer_pid ||:
}
function filter_exists_and_template
{
local path
for path in "$@"; do
if [ -e "$path" ]; then
# SC2001 shellcheck suggests:
# echo ${path//.sql.j2/.gen.sql}
# but it doesn't allow to use regex
echo "$path" | sed 's/\.sql\.j2$/.gen.sql/'
else
echo "'$path' does not exists" >&2
fi
done
}
function fuzz
{
/generate-test-j2.py --path ch/tests/queries/0_stateless
# Obtain the list of newly added tests. They will be fuzzed in more extreme way than other tests.
# Don't overwrite the NEW_TESTS_OPT so that it can be set from the environment.
NEW_TESTS="$(sed -n 's!\(^tests/queries/0_stateless/.*\.sql\(\.j2\)\?\)$!ch/\1!p' ci-changed-files.txt | sort -R)"
# ci-changed-files.txt contains also files that has been deleted/renamed, filter them out.
NEW_TESTS="$(filter_exists_and_template $NEW_TESTS)"
if [[ -n "$NEW_TESTS" ]]
then
NEW_TESTS_OPT="${NEW_TESTS_OPT:---interleave-queries-file ${NEW_TESTS}}"
else
NEW_TESTS_OPT="${NEW_TESTS_OPT:-}"
fi
export CLICKHOUSE_WATCHDOG_ENABLE=0 # interferes with gdb
clickhouse-server --config-file db/config.xml -- --path db 2>&1 | tail -100000 > server.log &
server_pid=$!
kill -0 $server_pid
echo "
set follow-fork-mode child
handle all noprint
handle SIGSEGV stop print
handle SIGBUS stop print
continue
thread apply all backtrace
continue
" > script.gdb
gdb -batch -command script.gdb -p $server_pid &
# Check connectivity after we attach gdb, because it might cause the server
# to freeze and the fuzzer will fail.
for _ in {1..60}
do
sleep 1
if clickhouse-client --query "select 1"
then
break
fi
done
clickhouse-client --query "select 1" # This checks that the server is responding
kill -0 $server_pid # This checks that it is our server that is started and not some other one
echo Server started and responded
# SC2012: Use find instead of ls to better handle non-alphanumeric filenames. They are all alphanumeric.
# SC2046: Quote this to prevent word splitting. Actually I need word splitting.
# shellcheck disable=SC2012,SC2046
clickhouse-client \
--receive_timeout=10 \
--receive_data_timeout_ms=10000 \
--query-fuzzer-runs=1000 \
--queries-file $(ls -1 ch/tests/queries/0_stateless/*.sql | sort -R) \
$NEW_TESTS_OPT \
> >(tail -n 100000 > fuzzer.log) \
2>&1 &
fuzzer_pid=$!
echo "Fuzzer pid is $fuzzer_pid"
# Start a watchdog that should kill the fuzzer on timeout.
# The shell won't kill the child sleep when we kill it, so we have to put it
# into a separate process group so that we can kill them all.
set -m
watchdog &
watchdog_pid=$!
set +m
# Check that the watchdog has started.
kill -0 $watchdog_pid
# Wait for the fuzzer to complete.
# Note that the 'wait || ...' thing is required so that the script doesn't
# exit because of 'set -e' when 'wait' returns nonzero code.
fuzzer_exit_code=0
wait "$fuzzer_pid" || fuzzer_exit_code=$?
echo "Fuzzer exit code is $fuzzer_exit_code"
kill -- -$watchdog_pid ||:
# If the server dies, most often the fuzzer returns code 210: connetion
# refused, and sometimes also code 32: attempt to read after eof. For
# simplicity, check again whether the server is accepting connections, using
# clickhouse-client. We don't check for existence of server process, because
# the process is still present while the server is terminating and not
# accepting the connections anymore.
if clickhouse-client --query "select 1 format Null"
then
server_died=0
else
echo "Server live check returns $?"
server_died=1
fi
# Stop the server.
clickhouse-client --query "select elapsed, query from system.processes" ||:
killall clickhouse-server ||:
for _ in {1..10}
do
if ! pgrep -f clickhouse-server
then
break
fi
sleep 1
done
killall -9 clickhouse-server ||:
# Debug.
date
sleep 10
jobs
pstree -aspgT
server_exit_code=0
wait $server_pid || server_exit_code=$?
echo "Server exit code is $server_exit_code"
# Make files with status and description we'll show for this check on Github.
task_exit_code=$fuzzer_exit_code
if [ "$server_died" == 1 ]
then
# The server has died.
task_exit_code=210
echo "failure" > status.txt
if ! grep --text -ao "Received signal.*\|Logical error.*\|Assertion.*failed\|Failed assertion.*\|.*runtime error: .*\|.*is located.*\|SUMMARY: AddressSanitizer:.*\|SUMMARY: MemorySanitizer:.*\|SUMMARY: ThreadSanitizer:.*\|.*_LIBCPP_ASSERT.*" server.log > description.txt
then
echo "Lost connection to server. See the logs." > description.txt
fi
elif [ "$fuzzer_exit_code" == "143" ] || [ "$fuzzer_exit_code" == "0" ]
then
# Variants of a normal run:
# 0 -- fuzzing ended earlier than timeout.
# 143 -- SIGTERM -- the fuzzer was killed by timeout.
task_exit_code=0
echo "success" > status.txt
echo "OK" > description.txt
else
# The server was alive, but the fuzzer returned some error. This might
# be some client-side error detected by fuzzing, or a problem in the
# fuzzer itself. Don't grep the server log in this case, because we will
# find a message about normal server termination (Received signal 15),
# which is confusing.
task_exit_code=$fuzzer_exit_code
echo "failure" > status.txt
{ grep --text -o "Found error:.*" fuzzer.log \
|| grep --text -ao "Exception:.*" fuzzer.log \
|| echo "Fuzzer failed ($fuzzer_exit_code). See the logs." ; } \
| tail -1 > description.txt
fi
}
case "$stage" in
"")
;& # Did you know? This is "fallthrough" in bash. https://stackoverflow.com/questions/12010686/case-statement-fallthrough
"clone")
time clone
if [ -v FUZZ_LOCAL_SCRIPT ]
then
# just fall through
echo Using the testing script from docker container
:
else
# Run the testing script from the repository
echo Using the testing script from the repository
export stage=download
time ch/docker/test/fuzzer/run-fuzzer.sh
# Keep the error code
exit $?
fi
;&
"download")
time download
;&
"configure")
time configure
;&
"fuzz")
time fuzz
;&
"report")
cat > report.html <<EOF ||:
<!DOCTYPE html>
<html lang="en">
<link rel="preload" as="font" href="https://yastatic.net/adv-www/_/sUYVCPUAQE7ExrvMS7FoISoO83s.woff2" type="font/woff2" crossorigin="anonymous"/>
<style>
@font-face {
font-family:'Yandex Sans Display Web';
src:url(https://yastatic.net/adv-www/_/H63jN0veW07XQUIA2317lr9UIm8.eot);
src:url(https://yastatic.net/adv-www/_/H63jN0veW07XQUIA2317lr9UIm8.eot?#iefix) format('embedded-opentype'),
url(https://yastatic.net/adv-www/_/sUYVCPUAQE7ExrvMS7FoISoO83s.woff2) format('woff2'),
url(https://yastatic.net/adv-www/_/v2Sve_obH3rKm6rKrtSQpf-eB7U.woff) format('woff'),
url(https://yastatic.net/adv-www/_/PzD8hWLMunow5i3RfJ6WQJAL7aI.ttf) format('truetype'),
url(https://yastatic.net/adv-www/_/lF_KG5g4tpQNlYIgA0e77fBSZ5s.svg#YandexSansDisplayWeb-Regular) format('svg');
font-weight:400;
font-style:normal;
font-stretch:normal
}
body { font-family: "Yandex Sans Display Web", Arial, sans-serif; background: #EEE; }
h1 { margin-left: 10px; }
th, td { border: 0; padding: 5px 10px 5px 10px; text-align: left; vertical-align: top; line-height: 1.5; background-color: #FFF;
td { white-space: pre; font-family: Monospace, Courier New; }
border: 0; box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.05), 0 8px 25px -5px rgba(0, 0, 0, 0.1); }
a { color: #06F; text-decoration: none; }
a:hover, a:active { color: #F40; text-decoration: underline; }
table { border: 0; }
.main { margin-left: 10%; }
p.links a { padding: 5px; margin: 3px; background: #FFF; line-height: 2; white-space: nowrap; box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.05), 0 8px 25px -5px rgba(0, 0, 0, 0.1); }
th { cursor: pointer; }
</style>
<title>AST Fuzzer for PR #${PR_TO_TEST} @ ${SHA_TO_TEST}</title>
</head>
<body>
<div class="main">
<h1>AST Fuzzer for PR #${PR_TO_TEST} @ ${SHA_TO_TEST}</h1>
<p class="links">
<a href="fuzzer.log">fuzzer.log</a>
<a href="server.log">server.log</a>
<a href="main.log">main.log</a>
</p>
<table>
<tr><th>Test name</th><th>Test status</th><th>Description</th></tr>
<tr><td>AST Fuzzer</td><td>$(cat status.txt)</td><td>$(cat description.txt)</td></tr>
</table>
</body>
</html>
EOF
;&
esac
exit $task_exit_code