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#!/bin/bash
#
# Copyright 2016 The Bazel Authors. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# discard_graph_edges_test.sh: basic tests for the --discard_graph_edges flag.
# --- begin runfiles.bash initialization ---
# Copy-pasted from Bazel's Bash runfiles library (tools/bash/runfiles/runfiles.bash).
set -euo pipefail
if [[ ! -d "${RUNFILES_DIR:-/dev/null}" && ! -f "${RUNFILES_MANIFEST_FILE:-/dev/null}" ]]; then
if [[ -f "$0.runfiles_manifest" ]]; then
export RUNFILES_MANIFEST_FILE="$0.runfiles_manifest"
elif [[ -f "$0.runfiles/MANIFEST" ]]; then
export RUNFILES_MANIFEST_FILE="$0.runfiles/MANIFEST"
elif [[ -f "$0.runfiles/bazel_tools/tools/bash/runfiles/runfiles.bash" ]]; then
export RUNFILES_DIR="$0.runfiles"
fi
fi
if [[ -f "${RUNFILES_DIR:-/dev/null}/bazel_tools/tools/bash/runfiles/runfiles.bash" ]]; then
source "${RUNFILES_DIR}/bazel_tools/tools/bash/runfiles/runfiles.bash"
elif [[ -f "${RUNFILES_MANIFEST_FILE:-/dev/null}" ]]; then
source "$(grep -m1 "^bazel_tools/tools/bash/runfiles/runfiles.bash " \
"$RUNFILES_MANIFEST_FILE" | cut -d ' ' -f 2-)"
else
echo >&2 "ERROR: cannot find @bazel_tools//tools/bash/runfiles:runfiles.bash"
exit 1
fi
# --- end runfiles.bash initialization ---
source "$(rlocation "io_bazel/src/test/shell/integration_test_setup.sh")" \
|| { echo "integration_test_setup.sh not found!" >&2; exit 1; }
source "$(rlocation "io_bazel/src/test/shell/integration/discard_graph_edges_lib.sh")" \
|| { echo "discard_graph_edges_lib.sh not found!" >&2; exit 1; }
IS_WINDOWS=false
case "$(uname | tr [:upper:] [:lower:])" in
msys*|mingw*|cygwin*)
IS_WINDOWS=true
esac
if "$IS_WINDOWS"; then
EXE_EXT=".exe"
else
EXE_EXT=""
fi
javabase="$1"
if [[ $javabase = external/* ]]; then
javabase=${javabase#external/}
fi
jmaptool="$(rlocation "${javabase}/bin/jmap${EXE_EXT}")"
#### SETUP #############################################################
set -e
function set_up() {
mkdir -p testing || fail "Couldn't create directory"
echo "cc_test(name='mytest', srcs=['mytest.cc'], malloc=':system_malloc')" > testing/BUILD || fail
echo "cc_library(name='system_malloc', srcs=[])" >> testing/BUILD || fail
echo "int main() {return 0;}" > testing/mytest.cc || fail
}
#### TESTS #############################################################
function test_build() {
bazel $STARTUP_FLAGS build $BUILD_FLAGS //testing:mytest >& $TEST_log \
|| fail "Expected success"
}
function test_test() {
bazel $STARTUP_FLAGS test $BUILD_FLAGS //testing:mytest >& $TEST_log \
|| fail "Expected success"
}
function test_failed_build() {
mkdir -p foo || fail "Couldn't make directory"
cat > foo/BUILD <<'EOF' || fail "Couldn't make BUILD file"
cc_library(name = 'foo', srcs = ['foo.cc'], deps = [':bar'])
cc_library(name = 'bar', srcs = ['bar.cc'])
EOF
touch foo/foo.cc || fail "Couldn't make foo.cc"
echo "#ERROR" > foo/bar.cc || fail "Couldn't make bar.cc"
bazel $STARTUP_FLAGS build $BUILD_FLAGS //foo:foo >& "$TEST_log" \
&& fail "Expected failure"
exit_code=$?
[ $exit_code -eq 1 ] || fail "Wrong exit code: $exit_code"
expect_log "#ERROR"
expect_not_log "Graph edges not stored"
}
# bazel info inherits from bazel build, but it doesn't have much in common with it.
function test_info() {
bazel $STARTUP_FLAGS info $BUILD_FLAGS >& $TEST_log || fail "Expected success"
}
function test_empty_build() {
bazel $STARTUP_FLAGS build $BUILD_FLAGS >& $TEST_log || fail "Expected success"
}
function test_query() {
bazel $STARTUP_FLAGS query 'somepath(//testing:mytest,//testing:system_malloc)' >& $TEST_log \
|| fail "Expected success"
expect_log "//testing:mytest"
expect_log "//testing:system_malloc"
}
function test_configured_query() {
bazel $STARTUP_FLAGS build $BUILD_FLAGS --nobuild \
--experimental_post_build_query='deps(//testing:mytest, 1)' \
//testing:mytest >& "$TEST_log" && fail "Expected failure"
exit_code="$?"
[[ "$exit_code" == 2 ]] || fail "Expected exit code 2 but was $exit_code"
}
function test_top_level_aspect() {
mkdir -p "foo" || fail "Couldn't make directory"
cat > foo/simpleaspect.bzl <<'EOF' || fail "Couldn't write bzl file"
def _simple_aspect_impl(target, ctx):
result=depset()
for orig_out in target.files:
aspect_out = ctx.actions.declare_file(orig_out.basename + ".aspect")
ctx.actions.write(
output=aspect_out,
content = "Hello from aspect for %s" % orig_out.basename)
result += [aspect_out]
for src in ctx.rule.attr.srcs:
result += src.aspectouts
return struct(output_groups={
"aspect-out" : result }, aspectouts = result)
simple_aspect = aspect(implementation=_simple_aspect_impl,
attr_aspects = ["srcs"])
def _rule_impl(ctx):
output = ctx.outputs.out
ctx.actions.run_shell(
inputs=[],
outputs=[output],
progress_message="Touching output %s" % output,
command="touch %s" % output.path)
simple_rule = rule(
implementation =_rule_impl,
attrs = {"srcs": attr.label_list(aspects=[simple_aspect])},
outputs={"out": "%{name}.out"}
)
EOF
cat > foo/BUILD <<'EOF' || fail "Couldn't write BUILD file"
load("//foo:simpleaspect.bzl", "simple_rule")
simple_rule(name = "foo", srcs = [":dep"])
simple_rule(name = "dep", srcs = [])
EOF
bazel $STARTUP_FLAGS build $BUILD_FLAGS //foo:foo >& "$TEST_log" \
|| fail "Expected success"
bazel --batch clean >& "$TEST_log" || fail "Expected success"
bazel $STARTUP_FLAGS build $BUILD_FLAGS \
--aspects foo/simpleaspect.bzl%simple_aspect \
--output_groups=aspect-out //foo:foo >& "$TEST_log" \
|| fail "Expected success"
[[ -e "bazel-bin/foo/foo.out.aspect" ]] || fail "Aspect foo not run"
[[ -e "bazel-bin/foo/dep.out.aspect" ]] || fail "Aspect bar not run"
}
function prepare_histogram() {
readonly local build_args="$1"
rm -rf histodump
mkdir -p histodump || fail "Couldn't create directory"
readonly local server_pid_fifo="$TEST_TMPDIR/server_pid"
cat > histodump/foo.bzl <<'EOF' || fail "Couldn't create bzl file"
def foo():
pass
EOF
cat > histodump/bar.bzl <<'EOF' || fail "Couldn't create bzl file"
def bar():
pass
EOF
cat > histodump/baz.bzl <<'EOF' || fail "Couldn't create bzl file"
def baz():
pass
EOF
cat > histodump/BUILD <<EOF || fail "Couldn't create BUILD file"
load(":foo.bzl", "foo")
load(":bar.bzl", "bar")
load(":baz.bzl", "baz")
cc_library(name = 'cclib', srcs = ['cclib.cc'])
genrule(name = 'histodump',
srcs = glob(["*.in"]),
outs = ['histo.txt'],
local = 1,
tools = [':cclib'],
cmd = 'server_pid=\$\$(cat $server_pid_fifo) ; ' +
'${jmaptool} -histo:live \$\$server_pid > ' +
'\$(location histo.txt) ' +
'|| echo "server_pid in genrule: \$\$server_pid"'
)
EOF
touch histodump/cclib.cc
rm -f "$server_pid_fifo"
mkfifo "$server_pid_fifo"
histo_file="$(bazel info "${PRODUCT_NAME}-genfiles" \
2> /dev/null)/histodump/histo.txt"
bazel clean >& "$TEST_log" || fail "Couldn't clean"
readonly local explicit_server_pid="$(bazel $STARTUP_FLAGS info server_pid)"
bazel $STARTUP_FLAGS build --show_timestamps $build_args \
//histodump:histodump >> "$TEST_log" 2>&1 &
readonly local subshell_pid=$!
# We plan to remove batch mode from the relevant flags for discarding
# incrementality state. In the interim, tests that are not in batch mode
# explicitly pass --nobatch, so we can use it as a signal.
if [[ "$STARTUP_FLAGS" =~ "--nobatch" ]]; then
server_pid="$explicit_server_pid"
else
server_pid="$subshell_pid"
fi
echo "server_pid in main thread is ${server_pid}" >> "$TEST_log"
echo "$server_pid" > "$server_pid_fifo"
echo "Finished writing pid to fifo at " >> "$TEST_log"
date >> "$TEST_log"
# Wait for previous command to finish.
wait "$subshell_pid" || fail "Bazel command failed"
cat "$histo_file" >> "$TEST_log"
echo "$histo_file"
}
# TODO(b/62450749): This is flaky on CI.
function test_packages_cleared() {
local histo_file="$(prepare_histogram "--nodiscard_analysis_cache")"
local package_count="$(extract_histogram_count "$histo_file" \
'devtools\.build\.lib\..*\.Package$')"
[[ "$package_count" -ge 9 ]] \
|| fail "package count $package_count too low: did you move/rename the class?"
local glob_count="$(extract_histogram_count "$histo_file" "GlobValue$")"
[[ "$glob_count" -ge 2 ]] \
|| fail "glob count $glob_count too low: did you move/rename the class?"
local env_count="$(extract_histogram_count "$histo_file" \
'Environment\$Extension$')"
[[ "$env_count" -ge 3 ]] \
|| fail "env extension count $env_count too low: did you move/rename the class?"
local ct_count="$(extract_histogram_count "$histo_file" \
'RuleConfiguredTarget$')"
[[ "$ct_count" -ge 18 ]] \
|| fail "RuleConfiguredTarget count $ct_count too low: did you move/rename the class?"
local edgeless_entry_count="$(extract_histogram_count "$histo_file" \
'EdgelessInMemoryNodeEntry')"
[[ "$edgeless_entry_count" -eq 0 ]] \
|| fail "$edgless_entry_count EdgelessInMemoryNodeEntry instances found in build keeping edges"
local node_entry_count="$(extract_histogram_count "$histo_file" \
'\.InMemoryNodeEntry')"
[[ "$node_entry_count" -ge 100 ]] \
|| fail "Only $node_entry_count InMemoryNodeEntry instances found in build keeping edges"
local histo_file="$(prepare_histogram "$BUILD_FLAGS")"
package_count="$(extract_histogram_count "$histo_file" \
'devtools\.build\.lib\..*\.Package$')"
# A few packages aren't cleared.
[[ "$package_count" -le 15 ]] \
|| fail "package count $package_count too high"
glob_count="$(extract_histogram_count "$histo_file" "GlobValue$")"
[[ "$glob_count" -le 1 ]] \
|| fail "glob count $glob_count too high"
env_count="$(extract_histogram_count "$histo_file" \
'Environment\$ Extension$')"
[[ "$env_count" -le 7 ]] \
|| fail "env extension count $env_count too high"
ct_count="$(extract_histogram_count "$histo_file" \
'RuleConfiguredTarget$')"
[[ "$ct_count" -le 1 ]] \
|| fail "too many RuleConfiguredTarget: expected at most 1, got $ct_count"
edgeless_entry_count="$(extract_histogram_count "$histo_file" \
'EdgelessInMemoryNodeEntry')"
[[ "$edgeless_entry_count" -ge 100 ]] \
|| fail "Not enough ($edgless_entry_count) EdgelessInMemoryNodeEntry instances found in build discarding edges"
node_entry_count="$(extract_histogram_count "$histo_file" \
'\.InMemoryNodeEntry')"
[[ "$node_entry_count" -le 10 ]] \
|| fail "Too many ($node_entry_count) InMemoryNodeEntry instances found in build discarding edges"
}
# Action conflicts can cause deletion of nodes, and deletion is tricky with no edges.
function test_action_conflict() {
mkdir -p conflict || fail "Couldn't create directory"
cat > conflict/conflict_rule.bzl <<EOF || fail "Couldn't write bzl file"
def _create(ctx):
files_to_build = depset(ctx.outputs.outs)
intemediate_outputs = [ctx.actions.declare_file("bar")]
intermediate_cmd = "cat %s > %s" % (ctx.attr.name, intemediate_outputs[0].path)
action_cmd = "touch " + list(files_to_build)[0].path
ctx.actions.run_shell(outputs=list(intemediate_outputs),
command=intermediate_cmd)
ctx.actions.run_shell(inputs=list(intemediate_outputs),
outputs=list(files_to_build),
command=action_cmd)
struct(files=files_to_build,
data_runfiles=ctx.runfiles(transitive_files=files_to_build))
conflict = rule(
implementation=_create,
attrs={
"outs": attr.output_list(mandatory=True),
},
)
EOF
mkdir -p conflict || fail "Couldn't create directory"
cat > conflict/BUILD <<EOF || fail "Couldn't create BUILD file"
load("//conflict:conflict_rule.bzl", "conflict")
conflict(name='hello', outs=['hello_out'])
conflict(name='goodbye', outs=['goodbye_out'])
genrule(name='foo',
srcs = ['hello_out', 'goodbye_out'],
outs = ['foo_out'],
cmd = 'touch $@')
EOF
# --nocache_test_results to make log-grepping easier.
bazel $STARTUP_FLAGS test --keep_going $BUILD_FLAGS \
--nocache_test_results //conflict:foo //testing:mytest >& $TEST_log \
&& fail "Expected failure"
exit_code=$?
[ $exit_code -eq 1 ] || fail "Wrong exit code: $exit_code"
expect_log "is generated by these conflicting actions"
expect_not_log "Graph edges not stored"
expect_log "mytest *PASSED"
}
function test_remove_actions() {
bazel "$STARTUP_FLAGS" test $BUILD_FLAGS \
--noexperimental_enable_critical_path_profiling //testing:mytest \
>& $TEST_log || fail "Expected success"
}
function test_modules() {
mkdir -p foo || fail "mkdir failed"
cat > foo/BUILD <<EOF || fail "BUILD file creation failed"
package(features=['prune_header_modules','header_modules','use_header_modules'])
cc_library(name = 'a', hdrs = ['a.h'])
cc_library(name = 'b', hdrs = ['b.h'], deps = [':a'])
cc_library(name = 'c', deps = [':b'], srcs = ['c.cc'])
EOF
touch foo/a.h || fail "touch a.h failed"
touch foo/b.h || fail "touch b.h failed"
echo '#include "foo/b.h"' > foo/c.cc || fail "c.cc creation failed"
bazel "$STARTUP_FLAGS" build $BUILD_FLAGS \
--noexperimental_enable_critical_path_profiling \
//foo:c >& "$TEST_log" || fail "Build failed"
}
# The following tests are not expected to exercise codepath -- make sure nothing bad happens.
function test_no_batch() {
bazel $STARTUP_FLAGS --nobatch test $BUILD_FLAGS --track_incremental_state \
//testing:mytest >& "$TEST_log" || fail "Expected success"
}
function test_no_discard_analysis_cache() {
bazel $STARTUP_FLAGS test $BUILD_FLAGS --nodiscard_analysis_cache \
--track_incremental_state //testing:mytest >& "$TEST_log" \
|| fail "Expected success"
}
function test_packages_cleared_nobatch() {
readonly local old_startup_flags="$STARTUP_FLAGS"
STARTUP_FLAGS="--nobatch"
readonly local old_build_flags="$BUILD_FLAGS"
BUILD_FLAGS="--notrack_incremental_state --discard_analysis_cache"
test_packages_cleared
STARTUP_FLAGS="$old_startup_flags"
BUILD_FLAGS="$old_build_flags"
}
function test_packages_cleared_implicit_noincrementality_data() {
readonly local old_build_flags="$BUILD_FLAGS"
BUILD_FLAGS="$BUILD_FLAGS --track_incremental_state"
test_packages_cleared
BUILD_FLAGS="$old_build_flags"
}
function test_actions_not_deleted_after_execution() {
mkdir -p foo || fail "Couldn't mkdir"
cat > foo/BUILD <<'EOF' || fail "Couldn't write file"
genrule(name = "foo", cmd = "touch $@", outs = ["foo.out"])
EOF
bazel build $BUILD_FLAGS //foo:foo \
>& "$TEST_log" || fail "Expected success"
"$jmaptool" -histo:live "$(bazel info server_pid)" > histo.txt
genrule_action_count="$(extract_histogram_count histo.txt \
'GenRuleAction$')"
if [[ "$genrule_action_count" -lt 1 ]]; then
cat histo.txt >> "$TEST_log"
fail "GenRuleAction unexpectedly not found: $genrule_action_count"
fi
}
function test_dump_after_discard_incrementality_data() {
bazel build --notrack_incremental_state //testing:mytest >& "$TEST_log" \
|| fail "Expected success"
bazel dump --skyframe=detailed >& "$TEST_log" || fail "Expected success"
expect_log "//testing:mytest"
}
function test_query_after_discard_incrementality_data() {
bazel build --nobuild --notrack_incremental_state //testing:mytest \
>& "$TEST_log" || fail "Expected success"
bazel query --noexperimental_ui --output=label_kind //testing:mytest \
>& "$TEST_log" || fail "Expected success"
expect_log "Loading package: testing"
expect_log "cc_test rule //testing:mytest"
}
function test_shutdown_after_discard_incrementality_data() {
readonly local server_pid="$(bazel info server_pid 2> /dev/null)"
[[ -z "$server_pid" ]] && fail "Couldn't get server pid"
bazel build --nobuild --notrack_incremental_state //testing:mytest \
>& "$TEST_log" || fail "Expected success"
bazel shutdown || fail "Expected success"
readonly local new_server_pid="$(bazel info server_pid 2> /dev/null)"
[[ "$server_pid" != "$new_server_pid" ]] \
|| fail "pids $server_pid and $new_server_pid equal"
}
function test_clean_after_discard_incrementality_data() {
bazel build --nobuild --notrack_incremental_state //testing:mytest \
>& "$TEST_log" || fail "Expected success"
bazel clean >& "$TEST_log" || fail "Expected success"
}
function test_switch_back_and_forth() {
readonly local server_pid="$(bazel info \
--notrack_incremental_state server_pid 2> /dev/null)"
[[ -z "$server_pid" ]] && fail "Couldn't get server pid"
bazel test --noexperimental_ui --notrack_incremental_state \
//testing:mytest >& "$TEST_log" || fail "Expected success"
expect_log "Loading package: testing"
bazel test --noexperimental_ui --notrack_incremental_state \
//testing:mytest >& "$TEST_log" || fail "Expected success"
expect_log "Loading package: testing"
bazel test --noexperimental_ui //testing:mytest >& "$TEST_log" \
|| fail "Expected success"
expect_log "Loading package: testing"
bazel test --noexperimental_ui //testing:mytest >& "$TEST_log" \
|| fail "Expected success"
expect_not_log "Loading package: testing"
bazel test --noexperimental_ui --notrack_incremental_state \
//testing:mytest >& "$TEST_log" || fail "Expected success"
expect_log "Loading package: testing"
readonly local new_server_pid="$(bazel info server_pid 2> /dev/null)"
[[ "$server_pid" == "$new_server_pid" ]] \
|| fail "pids $server_pid and $new_server_pid not equal"
}
function test_warns_on_unexpected_combos() {
bazel --batch build --nobuild --discard_analysis_cache >& "$TEST_log" \
|| fail "Expected success"
expect_log "--batch and --discard_analysis_cache specified, but --notrack_incremental_state not specified"
bazel build --nobuild --discard_analysis_cache --notrack_incremental_state \
>& "$TEST_log" || fail "Expected success"
expect_log "--notrack_incremental_state was specified, but without --nokeep_state_after_build."
}
run_suite "test for --discard_graph_edges"