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#
# SPDX-License-Identifier: MIT
#
# Copyright 2019 by Garmin Ltd. or its subsidiaries
from oeqa.selftest.case import OESelftestTestCase
from oeqa.utils.commands import runCmd, bitbake, get_bb_var, get_bb_vars
import functools
import multiprocessing
import textwrap
import json
import unittest
MISSING = 'MISSING'
DIFFERENT = 'DIFFERENT'
SAME = 'SAME'
@functools.total_ordering
class CompareResult(object):
def __init__(self):
self.reference = None
self.test = None
self.status = 'UNKNOWN'
def __eq__(self, other):
return (self.status, self.test) == (other.status, other.test)
def __lt__(self, other):
return (self.status, self.test) < (other.status, other.test)
class PackageCompareResults(object):
def __init__(self):
self.total = []
self.missing = []
self.different = []
self.same = []
def add_result(self, r):
self.total.append(r)
if r.status == MISSING:
self.missing.append(r)
elif r.status == DIFFERENT:
self.different.append(r)
else:
self.same.append(r)
def sort(self):
self.total.sort()
self.missing.sort()
self.different.sort()
self.same.sort()
def __str__(self):
return 'same=%i different=%i missing=%i total=%i' % (len(self.same), len(self.different), len(self.missing), len(self.total))
def compare_file(reference, test, diffutils_sysroot):
result = CompareResult()
result.reference = reference
result.test = test
if not os.path.exists(reference):
result.status = MISSING
return result
r = runCmd(['cmp', '--quiet', reference, test], native_sysroot=diffutils_sysroot, ignore_status=True)
if r.status:
result.status = DIFFERENT
return result
result.status = SAME
return result
class ReproducibleTests(OESelftestTestCase):
package_classes = ['deb']
images = ['core-image-minimal']
def setUpLocal(self):
super().setUpLocal()
needed_vars = ['TOPDIR', 'TARGET_PREFIX', 'BB_NUMBER_THREADS']
bb_vars = get_bb_vars(needed_vars)
for v in needed_vars:
setattr(self, v.lower(), bb_vars[v])
if not hasattr(self.tc, "extraresults"):
self.tc.extraresults = {}
self.extras = self.tc.extraresults
self.extras.setdefault('reproducible.rawlogs', {})['log'] = ''
self.extras.setdefault('reproducible', {}).setdefault('files', {})
def append_to_log(self, msg):
self.extras['reproducible.rawlogs']['log'] += msg
def compare_packages(self, reference_dir, test_dir, diffutils_sysroot):
result = PackageCompareResults()
old_cwd = os.getcwd()
try:
file_result = {}
os.chdir(test_dir)
with multiprocessing.Pool(processes=int(self.bb_number_threads or 0)) as p:
for root, dirs, files in os.walk('.'):
async_result = []
for f in files:
reference_path = os.path.join(reference_dir, root, f)
test_path = os.path.join(test_dir, root, f)
async_result.append(p.apply_async(compare_file, (reference_path, test_path, diffutils_sysroot)))
for a in async_result:
result.add_result(a.get())
finally:
os.chdir(old_cwd)
result.sort()
return result
def write_package_list(self, package_class, name, packages):
self.extras['reproducible']['files'].setdefault(package_class, {})[name] = [
{'reference': p.reference, 'test': p.test} for p in packages]
def test_reproducible_builds(self):
capture_vars = ['DEPLOY_DIR_' + c.upper() for c in self.package_classes]
common_config = textwrap.dedent('''\
INHERIT += "reproducible_build"
PACKAGE_CLASSES = "%s"
''') % (' '.join('package_%s' % c for c in self.package_classes))
# Do an initial build. It's acceptable for this build to use sstate
self.write_config(common_config)
vars_reference = get_bb_vars(capture_vars)
bitbake(' '.join(self.images))
# Build native utilities
bitbake("diffutils-native -c addto_recipe_sysroot")
diffutils_sysroot = get_bb_var("RECIPE_SYSROOT_NATIVE", "diffutils-native")
reproducible_tmp = os.path.join(self.topdir, 'reproducible', 'tmp')
if os.path.exists(reproducible_tmp):
bb.utils.remove(reproducible_tmp, recurse=True)
# Perform another build. This build should *not* share sstate or pull
# from any mirrors, but sharing a DL_DIR is fine
self.write_config((textwrap.dedent('''\
TMPDIR = "%s"
SSTATE_DIR = "${TMPDIR}/sstate"
SSTATE_MIRROR = ""
''') % reproducible_tmp) + common_config)
vars_test = get_bb_vars(capture_vars)
bitbake(' '.join(self.images))
# NOTE: The temp directory from the reproducible build is purposely
# kept after the build so it can be diffed for debugging.
for c in self.package_classes:
with self.subTest(package_class=c):
package_class = 'package_' + c
deploy_reference = vars_reference['DEPLOY_DIR_' + c.upper()]
deploy_test = vars_test['DEPLOY_DIR_' + c.upper()]
result = self.compare_packages(deploy_reference, deploy_test, diffutils_sysroot)
self.logger.info('Reproducibility summary for %s: %s' % (c, result))
self.append_to_log('\n'.join("%s: %s" % (r.status, r.test) for r in result.total))
self.write_package_list(package_class, 'missing', result.missing)
self.write_package_list(package_class, 'different', result.different)
self.write_package_list(package_class, 'same', result.same)
if result.missing or result.different:
self.fail("The following %s packages are missing or different: %s" %
(c, ' '.join(r.test for r in (result.missing + result.different))))
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