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Create a new ExecGroupCollection container to manage exec group inher…
…itance and exec property parsing. Fixes bazelbuild#13459. PiperOrigin-RevId: 373388266
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src/main/java/com/google/devtools/build/lib/analysis/ExecGroupCollection.java
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| // Copyright 2021 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 static com.google.common.collect.ImmutableSet.toImmutableSet; | ||
| import static com.google.devtools.build.lib.packages.ExecGroup.DEFAULT_EXEC_GROUP_NAME; | ||
| import static java.util.stream.Collectors.joining; | ||
|
|
||
| import com.google.auto.value.AutoValue; | ||
| import com.google.common.collect.HashBasedTable; | ||
| import com.google.common.collect.ImmutableMap; | ||
| import com.google.common.collect.ImmutableSet; | ||
| import com.google.common.collect.ImmutableTable; | ||
| import com.google.common.collect.Table; | ||
| import com.google.devtools.build.lib.analysis.platform.PlatformInfo; | ||
| import com.google.devtools.build.lib.packages.ExecGroup; | ||
| import com.google.devtools.build.lib.server.FailureDetails.Analysis; | ||
| import com.google.devtools.build.lib.server.FailureDetails.Analysis.Code; | ||
| import com.google.devtools.build.lib.server.FailureDetails.FailureDetail; | ||
| import com.google.devtools.build.lib.skyframe.SaneAnalysisException; | ||
| import com.google.devtools.build.lib.util.DetailedExitCode; | ||
| import java.util.Collection; | ||
| import java.util.LinkedHashMap; | ||
| import java.util.Map; | ||
| import javax.annotation.Nullable; | ||
|
|
||
| /** | ||
| * A container class for groups of {@link ExecGroup} instances. This correctly handles exec group | ||
| * inheritance between rules and targets. See | ||
| * https://docs.bazel.build/versions/master/exec-groups.html for further details. | ||
| */ | ||
| @AutoValue | ||
| public abstract class ExecGroupCollection { | ||
|
|
||
| public static Builder emptyBuilder() { | ||
| return new AutoValue_ExecGroupCollection_Builder(ImmutableMap.of()); | ||
| } | ||
|
|
||
| public static Builder builder( | ||
| ExecGroup defaultExecGroup, ImmutableMap<String, ExecGroup> execGroups) { | ||
| // Post-process the groups to handle inheritance. | ||
| Map<String, ExecGroup> processedGroups = new LinkedHashMap<>(); | ||
| for (Map.Entry<String, ExecGroup> entry : execGroups.entrySet()) { | ||
| String name = entry.getKey(); | ||
| ExecGroup execGroup = entry.getValue(); | ||
|
|
||
| if (execGroup.copyFrom() != null) { | ||
| if (execGroup.copyFrom().equals(DEFAULT_EXEC_GROUP_NAME)) { | ||
| execGroup = execGroup.inheritFrom(defaultExecGroup); | ||
| } else { | ||
| execGroup = execGroup.inheritFrom(execGroups.get(execGroup.copyFrom())); | ||
| } | ||
| } | ||
|
|
||
| processedGroups.put(name, execGroup); | ||
| } | ||
|
|
||
| return new AutoValue_ExecGroupCollection_Builder(ImmutableMap.copyOf(processedGroups)); | ||
| } | ||
|
|
||
| /** Builder class for correctly constructing ExecGroupCollection instances. */ | ||
| // Note that this is _not_ an actual @AutoValue.Builder: it provides more logic and has different | ||
| // fields. | ||
| @AutoValue | ||
| public abstract static class Builder { | ||
| public abstract ImmutableMap<String, ExecGroup> execGroups(); | ||
|
|
||
| public ImmutableSet<String> getExecGroupNames() { | ||
| return execGroups().keySet(); | ||
| } | ||
|
|
||
| public ExecGroup getExecGroup(String name) { | ||
| return execGroups().get(name); | ||
| } | ||
|
|
||
| public ExecGroupCollection build( | ||
| @Nullable ToolchainCollection<ResolvedToolchainContext> toolchainContexts, | ||
| ImmutableMap<String, String> rawExecProperties) | ||
| throws InvalidExecGroupException { | ||
|
|
||
| // For each exec group, compute the combined execution properties. | ||
| ImmutableTable<String, String, String> combinedExecProperties = | ||
| computeCombinedExecProperties(toolchainContexts, rawExecProperties); | ||
|
|
||
| return new AutoValue_ExecGroupCollection(execGroups(), combinedExecProperties); | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Gets the combined exec properties of the platform and the target's exec properties. If a | ||
| * property is set in both, the target properties take precedence. | ||
| */ | ||
| private static ImmutableTable<String, String, String> computeCombinedExecProperties( | ||
| @Nullable ToolchainCollection<ResolvedToolchainContext> toolchainContexts, | ||
| ImmutableMap<String, String> rawExecProperties) | ||
| throws InvalidExecGroupException { | ||
|
|
||
| ImmutableSet<String> execGroupNames; | ||
| if (toolchainContexts == null) { | ||
| execGroupNames = ImmutableSet.of(DEFAULT_EXEC_GROUP_NAME); | ||
| } else { | ||
| execGroupNames = toolchainContexts.getExecGroupNames(); | ||
| } | ||
|
|
||
| // Parse the target-level exec properties. | ||
| ImmutableTable<String, String, String> parsedTargetProperties = | ||
| parseExecProperties(rawExecProperties); | ||
| // Validate the exec group names in the properties. | ||
| if (toolchainContexts != null) { | ||
| ImmutableSet<String> unknownTargetExecGroupNames = | ||
| parsedTargetProperties.rowKeySet().stream() | ||
| .filter(name -> !name.equals(DEFAULT_EXEC_GROUP_NAME)) | ||
| .filter(name -> !execGroupNames.contains(name)) | ||
| .collect(toImmutableSet()); | ||
| if (!unknownTargetExecGroupNames.isEmpty()) { | ||
| throw new InvalidExecGroupException(unknownTargetExecGroupNames); | ||
| } | ||
| } | ||
|
|
||
| // Parse each execution platform's exec properties. | ||
| ImmutableSet<PlatformInfo> executionPlatforms; | ||
| if (toolchainContexts == null) { | ||
| executionPlatforms = ImmutableSet.of(); | ||
| } else { | ||
| executionPlatforms = | ||
| execGroupNames.stream() | ||
| .map(name -> toolchainContexts.getToolchainContext(name).executionPlatform()) | ||
| .distinct() | ||
| .collect(toImmutableSet()); | ||
| } | ||
| Map<PlatformInfo, ImmutableTable<String, String, String>> parsedPlatformProperties = | ||
| new LinkedHashMap<>(); | ||
| for (PlatformInfo executionPlatform : executionPlatforms) { | ||
| ImmutableTable<String, String, String> parsed = | ||
| parseExecProperties(executionPlatform.execProperties()); | ||
| parsedPlatformProperties.put(executionPlatform, parsed); | ||
| } | ||
|
|
||
| // First, get the defaults. | ||
| ImmutableMap<String, String> defaultExecProperties = | ||
| parsedTargetProperties.row(DEFAULT_EXEC_GROUP_NAME); | ||
| Table<String, String, String> result = HashBasedTable.create(); | ||
| putAll(result, DEFAULT_EXEC_GROUP_NAME, defaultExecProperties); | ||
|
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| for (String execGroupName : execGroupNames) { | ||
| ImmutableMap<String, String> combined = | ||
| computeProperties( | ||
| execGroupName, | ||
| defaultExecProperties, | ||
| toolchainContexts, | ||
| parsedPlatformProperties, | ||
| parsedTargetProperties); | ||
| putAll(result, execGroupName, combined); | ||
| } | ||
|
|
||
| return ImmutableTable.copyOf(result); | ||
| } | ||
|
|
||
| private static <R, C, V> void putAll(Table<R, C, V> builder, R row, Map<C, V> values) { | ||
| for (Map.Entry<C, V> entry : values.entrySet()) { | ||
| builder.put(row, entry.getKey(), entry.getValue()); | ||
| } | ||
| } | ||
|
|
||
| private static ImmutableMap<String, String> computeProperties( | ||
| String execGroupName, | ||
| ImmutableMap<String, String> defaultExecProperties, | ||
| @Nullable ToolchainCollection<ResolvedToolchainContext> toolchainContexts, | ||
| Map<PlatformInfo, ImmutableTable<String, String, String>> parsedPlatformProperties, | ||
| ImmutableTable<String, String, String> parsedTargetProperties) { | ||
|
|
||
| ImmutableMap<String, String> defaultExecGroupPlatformProperties; | ||
| ImmutableMap<String, String> platformProperties; | ||
| if (toolchainContexts == null) { | ||
| defaultExecGroupPlatformProperties = ImmutableMap.of(); | ||
| platformProperties = ImmutableMap.of(); | ||
| } else { | ||
| PlatformInfo executionPlatform = | ||
| toolchainContexts.getToolchainContext(execGroupName).executionPlatform(); | ||
| defaultExecGroupPlatformProperties = | ||
| parsedPlatformProperties.get(executionPlatform).row(DEFAULT_EXEC_GROUP_NAME); | ||
| platformProperties = parsedPlatformProperties.get(executionPlatform).row(execGroupName); | ||
| } | ||
| Map<String, String> targetProperties = | ||
| new LinkedHashMap<>(parsedTargetProperties.row(execGroupName)); | ||
| for (String propertyName : defaultExecProperties.keySet()) { | ||
| // If the property exists in the default and not in the target, copy it. | ||
| targetProperties.computeIfAbsent(propertyName, defaultExecProperties::get); | ||
| } | ||
|
|
||
| // Combine the target and exec platform properties. Target properties take precedence. | ||
| // Use a HashMap instead of an ImmutableMap.Builder because we expect duplicate keys. | ||
| Map<String, String> combined = new LinkedHashMap<>(); | ||
| combined.putAll(defaultExecGroupPlatformProperties); | ||
| combined.putAll(defaultExecProperties); | ||
| combined.putAll(platformProperties); | ||
| combined.putAll(targetProperties); | ||
| return ImmutableMap.copyOf(combined); | ||
| } | ||
|
|
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| protected abstract ImmutableMap<String, ExecGroup> execGroups(); | ||
|
|
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| protected abstract ImmutableTable<String, String, String> execProperties(); | ||
|
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| public ExecGroup getExecGroup(String execGroupName) { | ||
| return execGroups().get(execGroupName); | ||
| } | ||
|
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| public ImmutableMap<String, String> getExecProperties(String execGroupName) { | ||
| return execProperties().row(execGroupName); | ||
| } | ||
|
|
||
| /** | ||
| * Parse raw exec properties attribute value into a map of exec group names to their properties. | ||
| * The raw map can have keys of two forms: (1) 'property' and (2) 'exec_group_name.property'. The | ||
| * former get parsed into the default exec group, the latter get parsed into their relevant exec | ||
| * groups. | ||
| */ | ||
| private static ImmutableTable<String, String, String> parseExecProperties( | ||
| Map<String, String> rawExecProperties) { | ||
| ImmutableTable.Builder<String, String, String> execProperties = ImmutableTable.builder(); | ||
| for (Map.Entry<String, String> execProperty : rawExecProperties.entrySet()) { | ||
| String rawProperty = execProperty.getKey(); | ||
| int delimiterIndex = rawProperty.indexOf('.'); | ||
| if (delimiterIndex == -1) { | ||
| execProperties.put(DEFAULT_EXEC_GROUP_NAME, rawProperty, execProperty.getValue()); | ||
| } else { | ||
| String execGroup = rawProperty.substring(0, delimiterIndex); | ||
| String property = rawProperty.substring(delimiterIndex + 1); | ||
| execProperties.put(execGroup, property, execProperty.getValue()); | ||
| } | ||
| } | ||
| return execProperties.build(); | ||
| } | ||
|
|
||
| /** An error for when the user tries to access a non-existent exec group. */ | ||
| public static final class InvalidExecGroupException extends Exception | ||
| implements SaneAnalysisException { | ||
|
|
||
| public InvalidExecGroupException(Collection<String> invalidNames) { | ||
| super( | ||
| String.format( | ||
| "Tried to set properties for non-existent exec groups: %s.", | ||
| invalidNames.stream().collect(joining(",")))); | ||
| } | ||
|
|
||
| @Override | ||
| public DetailedExitCode getDetailedExitCode() { | ||
| return DetailedExitCode.of( | ||
| FailureDetail.newBuilder() | ||
| .setMessage(getMessage()) | ||
| .setAnalysis(Analysis.newBuilder().setCode(Code.EXEC_GROUP_MISSING)) | ||
| .build()); | ||
| } | ||
| } | ||
| } |
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