Examples with Aspect com.google.devtools.build.lib.packages.Aspect used on opensource projects

Example 11 with Aspect

use of com.google.devtools.build.lib.packages.Aspect in project bazel by bazelbuild.

the class AspectFunction method compute.

@Nullable
@Override
public SkyValue compute(SkyKey skyKey, Environment env) throws AspectFunctionException, InterruptedException {
    SkyframeBuildView view = buildViewProvider.getSkyframeBuildView();
    NestedSetBuilder<Package> transitivePackages = NestedSetBuilder.stableOrder();
    NestedSetBuilder<Label> transitiveRootCauses = NestedSetBuilder.stableOrder();
    AspectKey key = (AspectKey) skyKey.argument();
    ConfiguredAspectFactory aspectFactory;
    Aspect aspect;
    if (key.getAspectClass() instanceof NativeAspectClass) {
        NativeAspectClass nativeAspectClass = (NativeAspectClass) key.getAspectClass();
        aspectFactory = (ConfiguredAspectFactory) nativeAspectClass;
        aspect = Aspect.forNative(nativeAspectClass, key.getParameters());
    } else if (key.getAspectClass() instanceof SkylarkAspectClass) {
        SkylarkAspectClass skylarkAspectClass = (SkylarkAspectClass) key.getAspectClass();
        SkylarkAspect skylarkAspect;
        try {
            skylarkAspect = loadSkylarkAspect(env, skylarkAspectClass.getExtensionLabel(), skylarkAspectClass.getExportedName());
        } catch (AspectCreationException e) {
            throw new AspectFunctionException(e);
        }
        if (skylarkAspect == null) {
            return null;
        }
        aspectFactory = new SkylarkAspectFactory(skylarkAspect);
        aspect = Aspect.forSkylark(skylarkAspect.getAspectClass(), skylarkAspect.getDefinition(key.getParameters()), key.getParameters());
    } else {
        throw new IllegalStateException();
    }
    // Keep this in sync with the same code in ConfiguredTargetFunction.
    PackageValue packageValue = (PackageValue) env.getValue(PackageValue.key(key.getLabel().getPackageIdentifier()));
    if (packageValue == null) {
        return null;
    }
    Package pkg = packageValue.getPackage();
    if (pkg.containsErrors()) {
        throw new AspectFunctionException(new BuildFileContainsErrorsException(key.getLabel().getPackageIdentifier()));
    }
    Target target;
    try {
        target = pkg.getTarget(key.getLabel().getName());
    } catch (NoSuchTargetException e) {
        throw new AspectFunctionException(e);
    }
    if (!(target instanceof Rule)) {
        env.getListener().handle(Event.error(target.getLocation(), String.format("%s is attached to %s %s but aspects must be attached to rules", aspect.getAspectClass().getName(), target.getTargetKind(), target.getName())));
        throw new AspectFunctionException(new AspectCreationException("aspects must be attached to rules"));
    }
    ConfiguredTargetValue configuredTargetValue;
    try {
        configuredTargetValue = (ConfiguredTargetValue) env.getValueOrThrow(ConfiguredTargetValue.key(key.getLabel(), key.getBaseConfiguration()), ConfiguredValueCreationException.class);
    } catch (ConfiguredValueCreationException e) {
        throw new AspectFunctionException(new AspectCreationException(e.getRootCauses()));
    }
    if (configuredTargetValue == null) {
        // precomputed.
        return null;
    }
    if (configuredTargetValue.getConfiguredTarget() == null) {
        return null;
    }
    if (configuredTargetValue.getConfiguredTarget().getProvider(AliasProvider.class) != null) {
        return createAliasAspect(env, target, aspect, key, configuredTargetValue.getConfiguredTarget());
    }
    ConfiguredTarget associatedTarget = configuredTargetValue.getConfiguredTarget();
    ImmutableList.Builder<Aspect> aspectPathBuilder = ImmutableList.builder();
    if (!key.getBaseKeys().isEmpty()) {
        // We transitively collect all required aspects to reduce the number of restarts.
        // Semantically it is enough to just request key.getBaseKeys().
        ImmutableMap<AspectDescriptor, SkyKey> aspectKeys = getSkyKeysForAspects(key.getBaseKeys());
        Map<SkyKey, SkyValue> values = env.getValues(aspectKeys.values());
        if (env.valuesMissing()) {
            return null;
        }
        try {
            associatedTarget = getBaseTargetAndCollectPath(associatedTarget, key.getBaseKeys(), values, aspectPathBuilder);
        } catch (DuplicateException e) {
            env.getListener().handle(Event.error(associatedTarget.getTarget().getLocation(), e.getMessage()));
            throw new AspectFunctionException(new AspectCreationException(e.getMessage(), associatedTarget.getLabel()));
        }
    }
    aspectPathBuilder.add(aspect);
    SkyframeDependencyResolver resolver = view.createDependencyResolver(env);
    // When getting the dependencies of this hybrid aspect+base target, use the aspect's
    // configuration. The configuration of the aspect will always be a superset of the target's
    // (dynamic configuration mode: target is part of the aspect's config fragment requirements;
    // static configuration mode: target is the same configuration as the aspect), so the fragments
    // required by all dependencies (both those of the aspect and those of the base target)
    // will be present this way.
    TargetAndConfiguration originalTargetAndAspectConfiguration = new TargetAndConfiguration(target, key.getAspectConfiguration());
    ImmutableList<Aspect> aspectPath = aspectPathBuilder.build();
    try {
        // Get the configuration targets that trigger this rule's configurable attributes.
        ImmutableMap<Label, ConfigMatchingProvider> configConditions = ConfiguredTargetFunction.getConfigConditions(target, env, resolver, originalTargetAndAspectConfiguration, transitivePackages, transitiveRootCauses);
        if (configConditions == null) {
            // Those targets haven't yet been resolved.
            return null;
        }
        OrderedSetMultimap<Attribute, ConfiguredTarget> depValueMap;
        try {
            depValueMap = ConfiguredTargetFunction.computeDependencies(env, resolver, originalTargetAndAspectConfiguration, aspectPath, configConditions, ruleClassProvider, view.getHostConfiguration(originalTargetAndAspectConfiguration.getConfiguration()), transitivePackages, transitiveRootCauses);
        } catch (ConfiguredTargetFunctionException e) {
            throw new AspectCreationException(e.getMessage());
        }
        if (depValueMap == null) {
            return null;
        }
        if (!transitiveRootCauses.isEmpty()) {
            throw new AspectFunctionException(new AspectCreationException("Loading failed", transitiveRootCauses.build()));
        }
        return createAspect(env, key, aspectPath, aspect, aspectFactory, associatedTarget, key.getAspectConfiguration(), configConditions, depValueMap, transitivePackages);
    } catch (DependencyEvaluationException e) {
        if (e.getCause() instanceof ConfiguredValueCreationException) {
            ConfiguredValueCreationException cause = (ConfiguredValueCreationException) e.getCause();
            throw new AspectFunctionException(new AspectCreationException(cause.getMessage(), cause.getAnalysisRootCause()));
        } else if (e.getCause() instanceof InconsistentAspectOrderException) {
            InconsistentAspectOrderException cause = (InconsistentAspectOrderException) e.getCause();
            throw new AspectFunctionException(new AspectCreationException(cause.getMessage()));
        } else {
            // Cast to InvalidConfigurationException as a consistency check. If you add any
            // DependencyEvaluationException constructors, you may need to change this code, too.
            InvalidConfigurationException cause = (InvalidConfigurationException) e.getCause();
            throw new AspectFunctionException(new AspectCreationException(cause.getMessage()));
        }
    } catch (AspectCreationException e) {
        throw new AspectFunctionException(e);
    }
}

Example 12 with Aspect

use of com.google.devtools.build.lib.packages.Aspect in project bazel by bazelbuild.

the class PreciseAspectResolver method computeBuildFileDependencies.

@Override
public Set<Label> computeBuildFileDependencies(Package pkg, BuildFileDependencyMode mode) throws InterruptedException {
    Set<Label> result = new LinkedHashSet<>();
    result.addAll(mode.getDependencies(pkg));
    Set<PackageIdentifier> dependentPackages = new LinkedHashSet<>();
    // Iterate over all rules...
    for (Target target : pkg.getTargets()) {
        if (!(target instanceof Rule)) {
            continue;
        }
        // ...figure out which direct dependencies can possibly have aspects attached to them...
        Multimap<Attribute, Label> depsWithPossibleAspects = ((Rule) target).getTransitions(new BinaryPredicate<Rule, Attribute>() {

            @Override
            public boolean apply(@Nullable Rule rule, Attribute attribute) {
                for (Aspect aspectWithParameters : attribute.getAspects(rule)) {
                    if (!aspectWithParameters.getDefinition().getAttributes().isEmpty()) {
                        return true;
                    }
                }
                return false;
            }
        });
        // ...and add the package of the aspect.
        for (Label depLabel : depsWithPossibleAspects.values()) {
            dependentPackages.add(depLabel.getPackageIdentifier());
        }
    }
    // Then add all the subinclude labels of the packages thus found to the result.
    for (PackageIdentifier packageIdentifier : dependentPackages) {
        try {
            result.add(Label.create(packageIdentifier, "BUILD"));
            Package dependentPackage = packageProvider.getPackage(eventHandler, packageIdentifier);
            result.addAll(mode.getDependencies(dependentPackage));
        } catch (NoSuchPackageException e) {
        // If the package is not found, just add its BUILD file, which is already done above.
        // Hopefully this error is not raised when there is a syntax error in a subincluded file
        // or something.
        } catch (LabelSyntaxException e) {
            throw new IllegalStateException(e);
        }
    }
    return result;
}

Example 13 with Aspect

use of com.google.devtools.build.lib.packages.Aspect in project bazel by bazelbuild.

the class ConservativeAspectResolver method computeAspectDependencies.

@Override
public ImmutableMultimap<Attribute, Label> computeAspectDependencies(Target target, DependencyFilter dependencyFilter) throws InterruptedException {
    if (!(target instanceof Rule)) {
        return ImmutableMultimap.of();
    }
    Rule rule = (Rule) target;
    Multimap<Attribute, Label> result = LinkedHashMultimap.create();
    for (Attribute attribute : rule.getAttributes()) {
        for (Aspect aspect : attribute.getAspects(rule)) {
            AspectDefinition.addAllAttributesOfAspect(rule, result, aspect, dependencyFilter);
        }
    }
    return ImmutableMultimap.copyOf(result);
}

Example 14 with Aspect

use of com.google.devtools.build.lib.packages.Aspect in project bazel by bazelbuild.

the class AspectCollection method deduplicateAspects.

/**
   * Deduplicate aspects in path.
   *
   * @throws AspectCycleOnPathException if an aspect occurs twice on the path and
   *         the second occurrence sees a different set of aspects.
   */
private static LinkedHashMap<AspectDescriptor, Aspect> deduplicateAspects(Iterable<Aspect> aspectPath) throws AspectCycleOnPathException {
    LinkedHashMap<AspectDescriptor, Aspect> aspectMap = new LinkedHashMap<>();
    ArrayList<Aspect> seenAspects = new ArrayList<>();
    for (Aspect aspect : aspectPath) {
        if (!aspectMap.containsKey(aspect.getDescriptor())) {
            aspectMap.put(aspect.getDescriptor(), aspect);
            seenAspects.add(aspect);
        } else {
            validateDuplicateAspect(aspect, seenAspects);
        }
    }
    return aspectMap;
}

Example 15 with Aspect

use of com.google.devtools.build.lib.packages.Aspect in project bazel by bazelbuild.

the class DependencyResolver method requiredAspects.

private AspectCollection requiredAspects(Iterable<Aspect> aspectPath, AttributeAndOwner attributeAndOwner, final Target target, Rule originalRule) throws InconsistentAspectOrderException {
    if (!(target instanceof Rule)) {
        return AspectCollection.EMPTY;
    }
    if (attributeAndOwner.ownerAspect != null) {
        // Do not propagate aspects along aspect attributes.
        return AspectCollection.EMPTY;
    }
    ImmutableList.Builder<Aspect> filteredAspectPath = ImmutableList.builder();
    ImmutableSet.Builder<AspectDescriptor> visibleAspects = ImmutableSet.builder();
    Attribute attribute = attributeAndOwner.attribute;
    collectOriginatingAspects(originalRule, attribute, (Rule) target, filteredAspectPath, visibleAspects);
    collectPropagatingAspects(aspectPath, attribute, (Rule) target, filteredAspectPath, visibleAspects);
    try {
        return AspectCollection.create(filteredAspectPath.build(), visibleAspects.build());
    } catch (AspectCycleOnPathException e) {
        throw new InconsistentAspectOrderException(originalRule, attribute, target, e);
    }
}