| // Copyright 2023 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. |
| package com.google.devtools.build.lib.skyframe; |
| |
| import com.google.devtools.build.lib.analysis.PlatformOptions; |
| import com.google.devtools.build.lib.analysis.config.BuildOptions; |
| import com.google.devtools.build.lib.analysis.config.ExecutionTransitionFactory; |
| import com.google.devtools.build.lib.analysis.config.transitions.BaselineOptionsValue; |
| import com.google.devtools.build.lib.analysis.config.transitions.PatchTransition; |
| import com.google.devtools.build.lib.analysis.config.transitions.TransitionUtil; |
| import com.google.devtools.build.lib.cmdline.Label; |
| import com.google.devtools.build.skyframe.SkyFunction; |
| import com.google.devtools.build.skyframe.SkyFunctionException; |
| import com.google.devtools.build.skyframe.SkyKey; |
| import com.google.devtools.build.skyframe.SkyValue; |
| import com.google.devtools.common.options.OptionsParsingException; |
| import javax.annotation.Nullable; |
| |
| /** A builder for {@link BaselineOptionsValue} instances. */ |
| public final class BaselineOptionsFunction implements SkyFunction { |
| @Override |
| @Nullable |
| public SkyValue compute(SkyKey skyKey, Environment env) |
| throws InterruptedException, BaselineOptionsFunctionException { |
| BaselineOptionsValue.Key key = (BaselineOptionsValue.Key) skyKey.argument(); |
| |
| BuildOptions rawBaselineOptions = PrecomputedValue.BASELINE_CONFIGURATION.get(env); |
| |
| // Some test infrastructure only creates mock or partial top-level BuildOptions such that |
| // PlatformOptions or even CoreOptions might not be included. |
| // In that case, is not worth doing any special processing of the baseline. |
| if (rawBaselineOptions.hasNoConfig()) { |
| return BaselineOptionsValue.create(rawBaselineOptions); |
| } |
| |
| // Herein lies a hack to apply platform mappings to the baseline options. |
| // TODO(blaze-configurability-team): this should become unnecessary once --platforms is marked |
| // as EXPLICIT_IN_OUTPUT_PATH |
| PlatformMappingValue platformMappingValue = |
| (PlatformMappingValue) |
| env.getValue( |
| PlatformMappingValue.Key.create( |
| rawBaselineOptions.get(PlatformOptions.class).platformMappings)); |
| if (platformMappingValue == null) { |
| return null; |
| } |
| try { |
| BuildOptions mappedBaselineOptions = |
| BuildConfigurationKey.withPlatformMapping(platformMappingValue, rawBaselineOptions) |
| .getOptions(); |
| |
| if (key.afterExecTransition()) { |
| // A null executionPlatform actually skips transition application so need some value here. |
| // It is safe to supply some fake value here (as long as it is constant) since the baseline |
| // should never be used to actually construct an action or do toolchain resolution |
| // TODO(twigg): This can eventually be replaced by the actual exec platform once |
| // platforms is explicitly in the output path (with the garbage value as a fallback). |
| PatchTransition execTransition = |
| ExecutionTransitionFactory.createTransition( |
| Label.parseCanonicalUnchecked( |
| "//this_is_a_faked_exec_platform_for_blaze_internals")); |
| BuildOptions toOptions = |
| execTransition.patch( |
| TransitionUtil.restrict(execTransition, mappedBaselineOptions), env.getListener()); |
| return BaselineOptionsValue.create(toOptions); |
| } else { |
| return BaselineOptionsValue.create(mappedBaselineOptions); |
| } |
| } catch (OptionsParsingException e) { |
| throw new BaselineOptionsFunctionException(e); |
| } |
| } |
| |
| private static final class BaselineOptionsFunctionException extends SkyFunctionException { |
| BaselineOptionsFunctionException(Exception e) { |
| super(e, Transience.PERSISTENT); |
| } |
| } |
| } |