| // 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.rules.platform; |
| |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.ImmutableMap; |
| import com.google.common.collect.Iterables; |
| import com.google.devtools.build.lib.actions.MutableActionGraph.ActionConflictException; |
| import com.google.devtools.build.lib.analysis.ConfiguredTarget; |
| import com.google.devtools.build.lib.analysis.FileProvider; |
| import com.google.devtools.build.lib.analysis.FilesToRunProvider; |
| import com.google.devtools.build.lib.analysis.RuleConfiguredTargetBuilder; |
| import com.google.devtools.build.lib.analysis.RuleConfiguredTargetFactory; |
| import com.google.devtools.build.lib.analysis.RuleContext; |
| import com.google.devtools.build.lib.analysis.RunfilesProvider; |
| import com.google.devtools.build.lib.analysis.platform.ConstraintCollection; |
| import com.google.devtools.build.lib.analysis.platform.PlatformInfo; |
| import com.google.devtools.build.lib.analysis.platform.PlatformProviderUtils; |
| import com.google.devtools.build.lib.packages.Type; |
| import java.util.Map; |
| |
| /** Defines a platform for execution contexts. */ |
| public class Platform implements RuleConfiguredTargetFactory { |
| @Override |
| public ConfiguredTarget create(RuleContext ruleContext) |
| throws InterruptedException, RuleErrorException, ActionConflictException { |
| |
| PlatformInfo.Builder platformBuilder = PlatformInfo.builder().setLabel(ruleContext.getLabel()); |
| |
| ImmutableList<PlatformInfo> parentPlatforms = |
| PlatformProviderUtils.platforms( |
| ruleContext.getPrerequisites(PlatformRule.PARENTS_PLATFORM_ATTR)); |
| |
| if (parentPlatforms.size() > 1) { |
| throw ruleContext.throwWithAttributeError( |
| PlatformRule.PARENTS_PLATFORM_ATTR, |
| PlatformRule.PARENTS_PLATFORM_ATTR + " attribute must have a single value"); |
| } |
| PlatformInfo parentPlatform = Iterables.getFirst(parentPlatforms, null); |
| platformBuilder.setParent(parentPlatform); |
| |
| // Add the declared constraints. Because setting the host_platform or target_platform attribute |
| // to true on a platform automatically includes the detected CPU and OS constraints, if the |
| // constraint_values attribute tries to add those, this will throw an error. |
| platformBuilder.addConstraints( |
| PlatformProviderUtils.constraintValues( |
| ruleContext.getPrerequisites(PlatformRule.CONSTRAINT_VALUES_ATTR))); |
| |
| String remoteExecutionProperties = |
| ruleContext.attributes().get(PlatformRule.REMOTE_EXECUTION_PROPS_ATTR, Type.STRING); |
| platformBuilder.setRemoteExecutionProperties(remoteExecutionProperties); |
| |
| Map<String, String> execProperties = |
| ruleContext.attributes().get(PlatformRule.EXEC_PROPS_ATTR, Type.STRING_DICT); |
| if (execProperties != null && !execProperties.isEmpty()) { |
| platformBuilder.setExecProperties(ImmutableMap.copyOf(execProperties)); |
| } |
| |
| PlatformInfo platformInfo; |
| try { |
| platformInfo = platformBuilder.build(); |
| } catch (ConstraintCollection.DuplicateConstraintException e) { |
| throw ruleContext.throwWithAttributeError( |
| PlatformRule.CONSTRAINT_VALUES_ATTR, e.getMessage()); |
| } catch (PlatformInfo.ExecPropertiesException e) { |
| throw ruleContext.throwWithAttributeError(PlatformRule.EXEC_PROPS_ATTR, e.getMessage()); |
| } |
| |
| return new RuleConfiguredTargetBuilder(ruleContext) |
| .addProvider(RunfilesProvider.class, RunfilesProvider.EMPTY) |
| .addProvider(FileProvider.class, FileProvider.EMPTY) |
| .addProvider(FilesToRunProvider.class, FilesToRunProvider.EMPTY) |
| .addNativeDeclaredProvider(platformInfo) |
| .build(); |
| } |
| } |