| // Copyright 2017 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.analysis; |
| |
| import com.google.common.collect.ImmutableList; |
| import com.google.devtools.build.lib.analysis.config.BuildConfiguration; |
| import com.google.devtools.build.lib.analysis.config.BuildOptions; |
| import com.google.devtools.build.lib.cmdline.Label; |
| import com.google.devtools.build.lib.concurrent.ThreadSafety; |
| import com.google.devtools.build.lib.events.Event; |
| import com.google.devtools.build.lib.events.EventHandler; |
| import com.google.devtools.build.lib.skylarkbuildapi.platform.PlatformConfigurationApi; |
| import com.google.devtools.build.lib.util.RegexFilter; |
| import java.util.List; |
| import java.util.Map; |
| |
| /** A configuration fragment describing the current platform configuration. */ |
| @ThreadSafety.Immutable |
| public class PlatformConfiguration extends BuildConfiguration.Fragment |
| implements PlatformConfigurationApi { |
| private final Label hostPlatform; |
| private final ImmutableList<String> extraExecutionPlatforms; |
| private final Label targetPlatform; |
| private final ImmutableList<String> extraToolchains; |
| private final List<Map.Entry<RegexFilter, List<Label>>> targetFilterToAdditionalExecConstraints; |
| |
| PlatformConfiguration( |
| Label hostPlatform, |
| ImmutableList<String> extraExecutionPlatforms, |
| Label targetPlatform, |
| ImmutableList<String> extraToolchains, |
| List<Map.Entry<RegexFilter, List<Label>>> targetFilterToAdditionalExecConstraints) { |
| this.hostPlatform = hostPlatform; |
| this.extraExecutionPlatforms = extraExecutionPlatforms; |
| this.targetPlatform = targetPlatform; |
| this.extraToolchains = extraToolchains; |
| this.targetFilterToAdditionalExecConstraints = targetFilterToAdditionalExecConstraints; |
| } |
| |
| @Override |
| public void reportInvalidOptions(EventHandler reporter, BuildOptions buildOptions) { |
| PlatformOptions platformOptions = buildOptions.get(PlatformOptions.class); |
| // TODO(https://github.com/bazelbuild/bazel/issues/6519): Implement true multiplatform builds. |
| if (platformOptions.platforms.size() > 1) { |
| reporter.handle( |
| Event.warn( |
| String.format( |
| "--platforms only supports a single target platform: using the first option %s", |
| this.targetPlatform))); |
| } |
| } |
| |
| @Override |
| public Label getHostPlatform() { |
| return hostPlatform; |
| } |
| |
| /** |
| * Target patterns that select additional platforms that will be made available for action |
| * execution. |
| */ |
| public ImmutableList<String> getExtraExecutionPlatforms() { |
| return extraExecutionPlatforms; |
| } |
| |
| /** |
| * Returns the single target platform used in this configuration. The flag is multi-valued for |
| * future handling of multiple target platforms but any given configuration should only be |
| * concerned with a single target platform. |
| */ |
| @Override |
| public Label getTargetPlatform() { |
| return targetPlatform; |
| } |
| |
| @Override |
| public ImmutableList<Label> getTargetPlatforms() { |
| return ImmutableList.of(targetPlatform); |
| } |
| |
| /** |
| * Target patterns that select additional toolchains that will be considered during toolchain |
| * resolution. |
| */ |
| public ImmutableList<String> getExtraToolchains() { |
| return extraToolchains; |
| } |
| |
| /** |
| * Returns a list of labels referring to additional constraint value targets which should be taken |
| * into account when resolving the toolchains/execution platform for the target with the given |
| * label. |
| */ |
| public List<Label> getAdditionalExecutionConstraintsFor(Label label) { |
| ImmutableList.Builder<Label> constraints = ImmutableList.builder(); |
| for (Map.Entry<RegexFilter, List<Label>> filter : targetFilterToAdditionalExecConstraints) { |
| if (filter.getKey().isIncluded(label.getCanonicalForm())) { |
| constraints.addAll(filter.getValue()); |
| } |
| } |
| return constraints.build(); |
| } |
| } |