Examples with Nullable javax.annotation.Nullable used on opensource projects

Example 61 with Nullable

use of javax.annotation.Nullable in project bazel by bazelbuild.

the class PackageErrorFunction method compute.

@Nullable
@Override
public SkyValue compute(SkyKey skyKey, Environment env) throws PackageErrorFunctionException, InterruptedException {
    PackageIdentifier packageIdentifier = (PackageIdentifier) skyKey.argument();
    try {
        SkyKey packageKey = PackageValue.key(packageIdentifier);
        // Callers must have tried to load the package already and gotten the package successfully.
        Package pkg = ((PackageValue) env.getValueOrThrow(packageKey, NoSuchPackageException.class)).getPackage();
        Preconditions.checkState(pkg.containsErrors(), skyKey);
        throw new PackageErrorFunctionException(new BuildFileContainsErrorsException(packageIdentifier), Transience.PERSISTENT);
    } catch (NoSuchPackageException e) {
        throw new IllegalStateException("Function should not have been called on package with exception", e);
    }
}

Example 62 with Nullable

use of javax.annotation.Nullable in project bazel by bazelbuild.

the class PackageFunction method loadPackage.

/**
   * Constructs a {@link Package} object for the given package using legacy package loading.
   * Note that the returned package may be in error.
   *
   * <p>May return null if the computation has to be restarted.
   *
   * <p>Exactly one of {@code replacementContents} and {@code buildFileValue} will be
   * non-{@code null}. The former indicates that we have a faux BUILD file with the given contents
   * and the latter indicates that we have a legitimate BUILD file and should actually do
   * preprocessing.
   */
@Nullable
private CacheEntryWithGlobDeps<Package.Builder> loadPackage(String workspaceName, @Nullable String replacementContents, PackageIdentifier packageId, Path buildFilePath, @Nullable FileValue buildFileValue, RuleVisibility defaultVisibility, List<Statement> preludeStatements, Path packageRoot, Environment env) throws InterruptedException, PackageFunctionException {
    CacheEntryWithGlobDeps<Package.Builder> packageFunctionCacheEntry = packageFunctionCache.getIfPresent(packageId);
    if (packageFunctionCacheEntry == null) {
        profiler.startTask(ProfilerTask.CREATE_PACKAGE, packageId.toString());
        if (packageProgress != null) {
            packageProgress.startReadPackage(packageId);
        }
        try {
            CacheEntryWithGlobDeps<AstAfterPreprocessing> astCacheEntry = astCache.getIfPresent(packageId);
            if (astCacheEntry == null) {
                if (showLoadingProgress.get()) {
                    env.getListener().handle(Event.progress("Loading package: " + packageId));
                }
                // We use a LegacyGlobber that doesn't sort the matches for each individual glob pattern,
                // since we want to sort the final result anyway.
                LegacyGlobber legacyGlobber = packageFactory.createLegacyGlobberThatDoesntSort(buildFilePath.getParentDirectory(), packageId, packageLocator);
                SkyframeHybridGlobber skyframeGlobber = new SkyframeHybridGlobber(packageId, packageRoot, env, legacyGlobber);
                Preprocessor.Result preprocessingResult;
                if (replacementContents == null) {
                    Preconditions.checkNotNull(buildFileValue, packageId);
                    byte[] buildFileBytes;
                    try {
                        buildFileBytes = buildFileValue.isSpecialFile() ? FileSystemUtils.readContent(buildFilePath) : FileSystemUtils.readWithKnownFileSize(buildFilePath, buildFileValue.getSize());
                    } catch (IOException e) {
                        // transient.
                        throw new PackageFunctionException(new BuildFileContainsErrorsException(packageId, e.getMessage()), Transience.TRANSIENT);
                    }
                    try {
                        preprocessingResult = packageFactory.preprocess(buildFilePath, packageId, buildFileBytes, skyframeGlobber);
                    } catch (IOException e) {
                        throw new PackageFunctionException(new BuildFileContainsErrorsException(packageId, "preprocessing failed" + e.getMessage(), e), Transience.TRANSIENT);
                    }
                } else {
                    ParserInputSource replacementSource = ParserInputSource.create(replacementContents, buildFilePath.asFragment());
                    preprocessingResult = Preprocessor.Result.noPreprocessing(replacementSource);
                }
                StoredEventHandler astParsingEventHandler = new StoredEventHandler();
                BuildFileAST ast = PackageFactory.parseBuildFile(packageId, preprocessingResult.result, preludeStatements, astParsingEventHandler);
                // If no globs were fetched during preprocessing, then there's no need to reuse the
                // legacy globber instance during BUILD file evaluation since the performance argument
                // below does not apply.
                Set<SkyKey> globDepsRequested = skyframeGlobber.getGlobDepsRequested();
                LegacyGlobber legacyGlobberToStore = globDepsRequested.isEmpty() ? null : legacyGlobber;
                astCacheEntry = new CacheEntryWithGlobDeps<>(new AstAfterPreprocessing(preprocessingResult, ast, astParsingEventHandler), globDepsRequested, legacyGlobberToStore);
                astCache.put(packageId, astCacheEntry);
            }
            AstAfterPreprocessing astAfterPreprocessing = astCacheEntry.value;
            Set<SkyKey> globDepsRequestedDuringPreprocessing = astCacheEntry.globDepKeys;
            SkylarkImportResult importResult;
            try {
                importResult = fetchImportsFromBuildFile(buildFilePath, packageId, astAfterPreprocessing.ast, env, skylarkImportLookupFunctionForInlining);
            } catch (NoSuchPackageException e) {
                throw new PackageFunctionException(e, Transience.PERSISTENT);
            } catch (InterruptedException e) {
                astCache.invalidate(packageId);
                throw e;
            }
            if (importResult == null) {
                return null;
            }
            astCache.invalidate(packageId);
            // If a legacy globber was used to evaluate globs during preprocessing, it's important that
            // we reuse that globber during BUILD file evaluation for performance, in the case that
            // globs were fetched lazily during preprocessing. See Preprocessor.Factory#considersGlobs.
            LegacyGlobber legacyGlobber = astCacheEntry.legacyGlobber != null ? astCacheEntry.legacyGlobber : packageFactory.createLegacyGlobber(buildFilePath.getParentDirectory(), packageId, packageLocator);
            SkyframeHybridGlobber skyframeGlobber = new SkyframeHybridGlobber(packageId, packageRoot, env, legacyGlobber);
            Package.Builder pkgBuilder = packageFactory.createPackageFromPreprocessingAst(workspaceName, packageId, buildFilePath, astAfterPreprocessing, importResult.importMap, importResult.fileDependencies, defaultVisibility, skyframeGlobber);
            Set<SkyKey> globDepsRequested = ImmutableSet.<SkyKey>builder().addAll(globDepsRequestedDuringPreprocessing).addAll(skyframeGlobber.getGlobDepsRequested()).build();
            packageFunctionCacheEntry = new CacheEntryWithGlobDeps<>(pkgBuilder, globDepsRequested, null);
            numPackagesLoaded.incrementAndGet();
            if (packageProgress != null) {
                packageProgress.doneReadPackage(packageId);
            }
            packageFunctionCache.put(packageId, packageFunctionCacheEntry);
        } finally {
            profiler.completeTask(ProfilerTask.CREATE_PACKAGE);
        }
    }
    return packageFunctionCacheEntry;
}

Example 63 with Nullable

use of javax.annotation.Nullable in project bazel by bazelbuild.

the class PackageLookupFunction method getFileValue.

@Nullable
private static FileValue getFileValue(RootedPath fileRootedPath, Environment env, PackageIdentifier packageIdentifier) throws PackageLookupFunctionException, InterruptedException {
    String basename = fileRootedPath.asPath().getBaseName();
    SkyKey fileSkyKey = FileValue.key(fileRootedPath);
    FileValue fileValue = null;
    try {
        fileValue = (FileValue) env.getValueOrThrow(fileSkyKey, IOException.class, FileSymlinkException.class, InconsistentFilesystemException.class);
    } catch (IOException e) {
        // BuildFileNotFoundException.
        throw new PackageLookupFunctionException(new BuildFileNotFoundException(packageIdentifier, "IO errors while looking for " + basename + " file reading " + fileRootedPath.asPath() + ": " + e.getMessage(), e), Transience.PERSISTENT);
    } catch (FileSymlinkException e) {
        throw new PackageLookupFunctionException(new BuildFileNotFoundException(packageIdentifier, "Symlink cycle detected while trying to find " + basename + " file " + fileRootedPath.asPath()), Transience.PERSISTENT);
    } catch (InconsistentFilesystemException e) {
        // This error is not transient from the perspective of the PackageLookupFunction.
        throw new PackageLookupFunctionException(e, Transience.PERSISTENT);
    }
    return fileValue;
}

Example 64 with Nullable

use of javax.annotation.Nullable in project bazel by bazelbuild.

the class SkyframeDependencyResolver method getConfigurations.

@Nullable
@Override
protected List<BuildConfiguration> getConfigurations(Set<Class<? extends BuildConfiguration.Fragment>> fragments, Iterable<BuildOptions> buildOptions) throws InvalidConfigurationException, InterruptedException {
    List<SkyKey> keys = new ArrayList<>();
    for (BuildOptions options : buildOptions) {
        keys.add(BuildConfigurationValue.key(fragments, options));
    }
    Map<SkyKey, ValueOrException<InvalidConfigurationException>> configValues = env.getValuesOrThrow(keys, InvalidConfigurationException.class);
    if (env.valuesMissing()) {
        return null;
    }
    ImmutableList.Builder<BuildConfiguration> result = ImmutableList.builder();
    for (SkyKey key : keys) {
        result.add(((BuildConfigurationValue) configValues.get(key).get()).getConfiguration());
    }
    return result.build();
}

Example 65 with Nullable

use of javax.annotation.Nullable in project bazel by bazelbuild.

the class ToplevelSkylarkAspectFunction method compute.

@Nullable
@Override
public SkyValue compute(SkyKey skyKey, Environment env) throws LoadSkylarkAspectFunctionException, InterruptedException {
    SkylarkAspectLoadingKey aspectLoadingKey = (SkylarkAspectLoadingKey) skyKey.argument();
    String skylarkValueName = aspectLoadingKey.getSkylarkValueName();
    SkylarkImport extensionFile = aspectLoadingKey.getSkylarkImport();
    // Find label corresponding to skylark file, if one exists.
    ImmutableMap<String, Label> labelLookupMap;
    try {
        labelLookupMap = SkylarkImportLookupFunction.findLabelsForLoadStatements(ImmutableList.of(extensionFile), Label.parseAbsoluteUnchecked("//:empty"), env);
    } catch (SkylarkImportFailedException e) {
        env.getListener().handle(Event.error(e.getMessage()));
        throw new LoadSkylarkAspectFunctionException(new AspectCreationException(e.getMessage()));
    }
    if (labelLookupMap == null) {
        return null;
    }
    SkylarkAspect skylarkAspect;
    Label extensionFileLabel = Iterables.getOnlyElement(labelLookupMap.values());
    try {
        skylarkAspect = AspectFunction.loadSkylarkAspect(env, extensionFileLabel, skylarkValueName);
        if (skylarkAspect == null) {
            return null;
        }
        if (!skylarkAspect.getParamAttributes().isEmpty()) {
            throw new AspectCreationException("Cannot instantiate parameterized aspect " + skylarkAspect.getName() + " at the top level.", extensionFileLabel);
        }
    } catch (AspectCreationException e) {
        throw new LoadSkylarkAspectFunctionException(e);
    }
    SkyKey aspectKey = ActionLookupValue.key(AspectValue.createAspectKey(aspectLoadingKey.getTargetLabel(), aspectLoadingKey.getTargetConfiguration(), new AspectDescriptor(skylarkAspect.getAspectClass(), AspectParameters.EMPTY), aspectLoadingKey.getAspectConfiguration()));
    return env.getValue(aspectKey);
}