#!/usr/bin/env bash
#
# Run all etcd tests
# ./test
# ./test -v
#
# Run tests for one package
#
# PKG=./wal ./test
# PKG=snap ./test
#
# Run code coverage
# COVERDIR=coverage PASSES=cov ./test
set -e

source ./build

# build before setting up test GOPATH
if [[ "${PASSES}" == *"functional"* ]]; then
	./tools/functional-tester/build
fi

# build tests with vendored dependencies
etcd_setup_gopath

if [ -z "$PASSES" ]; then
	PASSES="fmt dep compile build unit"
fi

# Invoke ./cover for HTML output
COVER=${COVER:-"-cover"}

# Hack: gofmt ./ will recursively check the .git directory. So use *.go for gofmt.
IGNORE_PKGS="(cmd|vendor|etcdserverpb|rafttest|gopath.proto)"
INTEGRATION_PKGS="(integration|e2e|contrib|functional-tester)"
TEST_PKGS=`find . -name \*_test.go | while read a; do dirname $a; done | sort | uniq | egrep -v "$IGNORE_PKGS" | sed "s|\./||g"`
FORMATTABLE=`find . -name \*.go | while read a; do echo $(dirname $a)/"*.go"; done | sort | uniq | egrep -v "$IGNORE_PKGS" | sed "s|\./||g"`
TESTABLE_AND_FORMATTABLE=`echo "$TEST_PKGS" | egrep -v "$INTEGRATION_PKGS"`

if [ -z "$GOARCH" ]; then
	GOARCH=$(go env GOARCH);
fi

# user has not provided PKG override
if [ -z "$PKG" ]; then
	TEST=$TESTABLE_AND_FORMATTABLE
	FMT=$FORMATTABLE

# user has provided PKG override
else
	# strip out leading dotslashes and trailing slashes from PKG=./foo/
	TEST=${PKG/#./}
	TEST=${TEST/#\//}
	TEST=${TEST/%\//}

	# only run gofmt on packages provided by user
	FMT="$TEST"
fi

# split TEST into an array and prepend REPO_PATH to each local package
split=(${TEST// / })
TEST=${split[@]/#/${REPO_PATH}/}

# determine whether target supports race detection
if [ "$GOARCH" == "amd64" ]; then
	RACE="--race"
fi

function unit_pass {
	echo "Running unit tests..."
	# only -run=Test so examples can run in integration tests
	go test -timeout 3m ${COVER} ${RACE} -cpu 4 -run=Test $@ ${TEST}
}

function integration_pass {
	echo "Running integration tests..."
	go test -timeout 15m -v -cpu 4 $@ ${REPO_PATH}/integration
	go test -timeout 1m -v ${RACE} -cpu 4 $@ ${REPO_PATH}/client/integration
	go test -timeout 10m -v ${RACE} -cpu 4 $@ ${REPO_PATH}/clientv3/integration
	go test -timeout 1m -v ${RACE} -cpu 4 -run=Example $@ ${TEST}
}

function functional_pass {
        # Clean up any data and logs from previous runs
  	rm -rf ./agent-*
	for a in 1 2 3; do
		mkdir -p ./agent-$a
		./bin/etcd-agent -etcd-path ./bin/etcd -etcd-log-dir "./agent-$a" -port ":${a}9027" -use-root=false &
		pid="$!"
		agent_pids="${agent_pids} $pid"
	done

	for a in 1 2 3; do
		echo "Waiting for 'etcd-agent' on ${a}9027..."
		while ! nc -z localhost ${a}9027; do
			sleep 1
		done
	done

	echo "Starting 'etcd-tester'"
	./bin/etcd-tester \
		-agent-endpoints "127.0.0.1:19027,127.0.0.1:29027,127.0.0.1:39027" \
		-client-ports 12379,22379,32379 \
		-peer-ports 12380,22380,32380 \
		-limit 1 \
		-schedule-cases "0 1 2 3 4 5 6 7 8 9" \
		-exit-on-failure && echo "'etcd-tester' succeeded"
	ETCD_TESTER_EXIT_CODE=$?
	echo "ETCD_TESTER_EXIT_CODE:" ${ETCD_TESTER_EXIT_CODE}

	echo "Waiting for processes to exit"
	kill -s TERM ${agent_pids}
	for a in ${agent_pids}; do wait $a || true; done

	if [[ "${ETCD_TESTER_EXIT_CODE}" -ne "0" ]]; then
		echo "--- FAIL: exit code" ${ETCD_TESTER_EXIT_CODE}
		exit ${ETCD_TESTER_EXIT_CODE}
	fi
}

function cov_pass {
	echo "Running code coverage..."
	# install gocovmerge before running code coverage from github.com/wadey/gocovmerge
	# gocovmerge merges coverage files
	if ! which gocovmerge >/dev/null; then
		echo "gocovmerge not installed"
		exit 255
	fi

	if [ -z "$COVERDIR" ]; then
		echo "COVERDIR undeclared"
		exit 255
	fi

	mkdir -p "$COVERDIR"

	# PKGS_DELIM contains all the core etcd pkgs delimited by ',' which will be profiled for code coverage.
	# Integration tests will generate code coverage for those pkgs
	PKGS_DELIM=$(echo $TEST | sed 's/ /,/g')

	# TODO create coverage to e2e test
	PKGS=`echo "$TEST_PKGS" | egrep -v "(e2e|functional-tester)"`

	for t in ${PKGS}; do
		tf=`echo $t | tr / _`
		#  uses -run=Test to skip examples because clientv3/ example tests will leak goroutines
		go test -covermode=set -coverpkg $PKGS_DELIM -timeout 15m -run=Test -v -coverprofile "$COVERDIR/${tf}.coverprofile"  ${REPO_PATH}/$t
	done

	gocovmerge "$COVERDIR"/*.coverprofile >"$COVERDIR"/cover.out
}

function e2e_pass {
	echo "Running e2e tests..."
	go test -timeout 10m -v -cpu 4 $@ ${REPO_PATH}/e2e
}

function integration_e2e_pass {
	echo "Running integration and e2e tests..."

	go test -timeout 10m -v -cpu 4 $@ ${REPO_PATH}/e2e &
	e2epid="$!"
	go test -timeout 15m -v -cpu 4 $@ ${REPO_PATH}/integration &
	intpid="$!"
	wait $e2epid
	wait $intpid
	go test -timeout 1m -v ${RACE} -cpu 4 $@ ${REPO_PATH}/client/integration
	go test -timeout 10m -v ${RACE} -cpu 4 $@ ${REPO_PATH}/clientv3/integration
}

function grpcproxy_pass {
	go test -timeout 15m -v ${RACE} -tags cluster_proxy -cpu 4 $@ ${REPO_PATH}/integration
}

function release_pass {
	rm -f ./bin/etcd-last-release
	# to grab latest patch release; bump this up for every minor release
	UPGRADE_VER=$(git tag -l --sort=-version:refname "v3.0.*" | head -1)
	if [ -n "$MANUAL_VER" ]; then
		# in case, we need to test against different version
		UPGRADE_VER=$MANUAL_VER
	fi

	local file="etcd-$UPGRADE_VER-linux-$GOARCH.tar.gz"
	echo "Downloading $file"

	set +e
	curl --fail -L https://github.com/coreos/etcd/releases/download/$UPGRADE_VER/$file -o /tmp/$file
	local result=$?
	set -e
	case $result in
		0)	;;
		22)	return 0
			;;
		*)	exit $result
			;;
	esac

	tar xzvf /tmp/$file -C /tmp/ --strip-components=1
	mkdir -p ./bin
	mv /tmp/etcd ./bin/etcd-last-release
}

function fmt_pass {
	toggle_failpoints disable

	echo "Checking gofmt..."
	fmtRes=$(gofmt -l -s -d $FMT)
	if [ -n "${fmtRes}" ]; then
		echo -e "gofmt checking failed:\n${fmtRes}"
		exit 255
	fi

	echo "Checking govet..."
	vetRes=$(go vet $TEST)
	if [ -n "${vetRes}" ]; then
		echo -e "govet checking failed:\n${vetRes}"
		exit 255
	fi

	echo "Checking 'go tool vet -shadow'..."
	for path in $FMT; do
		if [ "${path##*.}" != "go" ]; then
			path="${path}/*.go"
		fi
		vetRes=$(go tool vet -shadow ${path})
		if [ -n "${vetRes}" ]; then
			echo -e "govet -shadow checking ${path} failed:\n${vetRes}"
			exit 255
		fi
	done

	echo "Checking for license header..."
	licRes=$(for file in $(find . -type f -iname '*.go' ! -path './cmd/*' ! -path './gopath.proto/*'); do
			head -n3 "${file}" | grep -Eq "(Copyright|generated|GENERATED)" || echo -e "  ${file}"
		done;)
	if [ -n "${licRes}" ]; then
		echo -e "license header checking failed:\n${licRes}"
		exit 255
	fi

	echo "Checking commit titles..."
	git log --oneline `git merge-base HEAD master`...HEAD | while read l; do
		commitMsg=`echo "$l" | cut -f2- -d' '`
		if [[ "$commitMsg" == Merge* ]]; then
			# ignore "Merge pull" commits
			continue
		fi
		if [[ "$commitMsg" == Revert* ]]; then
			# ignore revert commits
			continue
		fi

		pkgPrefix=`echo "$commitMsg" | cut -f1 -d':'`
		spaceCommas=`echo "$commitMsg" | sed 's/ /\n/g' | grep -c ',$' || echo 0`
		commaSpaces=`echo "$commitMsg" | sed 's/,/\n/g' | grep -c '^ ' || echo 0`
		if [[ `echo $commitMsg | grep -c ":..*"` == 0 || "$commitMsg" == "$pkgPrefix" || "$spaceCommas" != "$commaSpaces" ]]; then
    			echo "$l"...
			echo "Expected commit title format '<package>{\", \"<package>}: <description>'"
			echo "Got: $l"
			exit 255
		fi
	done
}

function dep_pass {
	echo "Checking package dependencies..."
	# don't pull in etcdserver package
	pushd clientv3 >/dev/null
	badpkg="(etcdserver|mvcc)"
	deps=`go list -f '{{ .Deps }}'  | sed 's/ /\n/g' | egrep "${badpkg}" | egrep -v "${badpkg}/" || echo ""`
	popd >/dev/null
	if [ ! -z "$deps" ]; then
		echo -e "clientv3 has masked dependencies:\n${deps}"
		exit 255
	fi
}

function compile_pass {
	echo "Checking build..."
	go build -v ./tools/...
}

# fail fast on static tests
function build_pass {
	GO_BUILD_FLAGS="-a -v" etcd_build
}

for pass in $PASSES; do
	${pass}_pass $@
done

echo "Success"