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#
# Copyright 2024, The Android Open Source Project
#
# 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.
from abc import ABC
import argparse
import functools
from build_context import BuildContext
import json
import logging
import os
from typing import Self
import test_mapping_module_retriever
class OptimizedBuildTarget(ABC):
"""A representation of an optimized build target.
This class will determine what targets to build given a given build_cotext and
will have a packaging function to generate any necessary output zips for the
build.
"""
def __init__(
self,
target: str,
build_context: BuildContext,
args: argparse.Namespace,
):
self.target = target
self.build_context = build_context
self.args = args
def get_build_targets(self) -> set[str]:
features = self.build_context.enabled_build_features
if self.get_enabled_flag() in features:
self.modules_to_build = self.get_build_targets_impl()
return self.modules_to_build
self.modules_to_build = {self.target}
return {self.target}
def get_package_outputs_commands(self) -> list[list[str]]:
features = self.build_context.enabled_build_features
if self.get_enabled_flag() in features:
return self.get_package_outputs_commands_impl()
return []
def get_package_outputs_commands_impl(self) -> list[list[str]]:
raise NotImplementedError(
'get_package_outputs_commands_impl not implemented in'
f' {type(self).__name__}'
)
def get_enabled_flag(self):
raise NotImplementedError(
f'get_enabled_flag not implemented in {type(self).__name__}'
)
def get_build_targets_impl(self) -> set[str]:
raise NotImplementedError(
f'get_build_targets_impl not implemented in {type(self).__name__}'
)
class NullOptimizer(OptimizedBuildTarget):
"""No-op target optimizer.
This will simply build the same target it was given and do nothing for the
packaging step.
"""
def __init__(self, target):
self.target = target
def get_build_targets(self):
return {self.target}
def get_package_outputs_commands(self):
return []
class ChangeInfo:
def __init__(self, change_info_file_path):
try:
with open(change_info_file_path) as change_info_file:
change_info_contents = json.load(change_info_file)
except json.decoder.JSONDecodeError:
logging.error(f'Failed to load CHANGE_INFO: {change_info_file_path}')
raise
self._change_info_contents = change_info_contents
def find_changed_files(self) -> set[str]:
changed_files = set()
for change in self._change_info_contents['changes']:
project_path = change.get('projectPath') + '/'
for revision in change.get('revisions'):
for file_info in revision.get('fileInfos'):
changed_files.add(project_path + file_info.get('path'))
return changed_files
class GeneralTestsOptimizer(OptimizedBuildTarget):
"""general-tests optimizer
TODO(b/358215235): Implement
This optimizer reads in the list of changed files from the file located in
env[CHANGE_INFO] and uses this list alongside the normal TEST MAPPING logic to
determine what test mapping modules will run for the given changes. It then
builds those modules and packages them in the same way general-tests.zip is
normally built.
"""
# List of modules that are always required to be in general-tests.zip.
_REQUIRED_MODULES = frozenset(
['cts-tradefed', 'vts-tradefed', 'compatibility-host-util']
)
def get_build_targets_impl(self) -> set[str]:
change_info_file_path = os.environ.get('CHANGE_INFO')
if not change_info_file_path:
logging.info(
'No CHANGE_INFO env var found, general-tests optimization disabled.'
)
return {'general-tests'}
test_infos = self.build_context.test_infos
test_mapping_test_groups = set()
for test_info in test_infos:
is_test_mapping = test_info.is_test_mapping
current_test_mapping_test_groups = test_info.test_mapping_test_groups
uses_general_tests = test_info.build_target_used('general-tests')
if uses_general_tests and not is_test_mapping:
logging.info(
'Test uses general-tests.zip but is not test-mapping, general-tests'
' optimization disabled.'
)
return {'general-tests'}
if is_test_mapping:
test_mapping_test_groups.update(current_test_mapping_test_groups)
change_info = ChangeInfo(change_info_file_path)
changed_files = change_info.find_changed_files()
test_mappings = test_mapping_module_retriever.GetTestMappings(
changed_files, set()
)
modules_to_build = set(self._REQUIRED_MODULES)
modules_to_build.update(
test_mapping_module_retriever.FindAffectedModules(
test_mappings, changed_files, test_mapping_test_groups
)
)
return modules_to_build
def get_enabled_flag(self):
return 'general_tests_optimized'
@classmethod
def get_optimized_targets(cls) -> dict[str, OptimizedBuildTarget]:
return {'general-tests': functools.partial(cls)}
OPTIMIZED_BUILD_TARGETS = {}
OPTIMIZED_BUILD_TARGETS.update(GeneralTestsOptimizer.get_optimized_targets())
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