| // 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.bazel.rules.android; |
| |
| import com.google.common.collect.ImmutableSortedSet; |
| import com.google.devtools.build.lib.actions.FileValue; |
| import com.google.devtools.build.lib.actions.InconsistentFilesystemException; |
| import com.google.devtools.build.lib.rules.repository.RepositoryFunction; |
| import com.google.devtools.build.lib.skyframe.DirectoryListingValue; |
| import com.google.devtools.build.lib.skyframe.Dirents; |
| import com.google.devtools.build.lib.vfs.Dirent; |
| import com.google.devtools.build.lib.vfs.Path; |
| import com.google.devtools.build.lib.vfs.PathFragment; |
| import com.google.devtools.build.lib.vfs.Root; |
| import com.google.devtools.build.lib.vfs.RootedPath; |
| import com.google.devtools.build.skyframe.SkyFunction.Environment; |
| import com.google.devtools.build.skyframe.SkyFunctionException.Transience; |
| import java.io.IOException; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| /** This class contains the common logic between Android NDK and SDK repository functions. */ |
| abstract class AndroidRepositoryFunction extends RepositoryFunction { |
| private static final Pattern PLATFORMS_API_LEVEL_PATTERN = Pattern.compile("android-(\\d+)"); |
| |
| /** |
| * Android rules depend on the contents in the SDK and NDK existing in the correct locations. This |
| * error is thrown when required files or directories are not found or believed to be tampered |
| * with. |
| */ |
| abstract void throwInvalidPathException(Path path, Exception e) |
| throws RepositoryFunctionException; |
| |
| /** |
| * Gets a {@link DirectoryListingValue} for {@code dirPath} or returns null. |
| * |
| * <p>First, we get a {@link FileValue} to check the {@code dirPath} exists and is a directory. If |
| * not, we throw an exception. |
| */ |
| final DirectoryListingValue getDirectoryListing(Path root, PathFragment dirPath, Environment env) |
| throws RepositoryFunctionException, InterruptedException { |
| RootedPath rootedPath = RootedPath.toRootedPath(Root.fromPath(root), dirPath); |
| try { |
| FileValue dirFileValue = |
| (FileValue) env.getValueOrThrow(FileValue.key(rootedPath), IOException.class); |
| if (dirFileValue == null) { |
| return null; |
| } |
| if (!dirFileValue.exists() || !dirFileValue.isDirectory()) { |
| throwInvalidPathException( |
| root, |
| new IOException( |
| String.format( |
| "Expected directory at %s but it is not a directory or it does not exist.", |
| rootedPath.asPath().getPathString()))); |
| } |
| return (DirectoryListingValue) |
| env.getValueOrThrow( |
| DirectoryListingValue.key(RootedPath.toRootedPath(Root.fromPath(root), dirPath)), |
| InconsistentFilesystemException.class); |
| } catch (IOException e) { |
| throw new RepositoryFunctionException(e, Transience.PERSISTENT); |
| } |
| } |
| |
| /** |
| * Gets the numeric api levels from the contents of the platforms directory in descending order. |
| * |
| * <p>Note that the directory entries are assumed to match {@code android-[0-9]+}. Any directory |
| * entries that are not directories or do not match that pattern are ignored. |
| */ |
| static final ImmutableSortedSet<Integer> getApiLevels(Dirents platformsDirectories) { |
| ImmutableSortedSet.Builder<Integer> apiLevels = ImmutableSortedSet.reverseOrder(); |
| for (Dirent platformDirectory : platformsDirectories) { |
| if (platformDirectory.getType() != Dirent.Type.DIRECTORY) { |
| continue; |
| } |
| Matcher matcher = PLATFORMS_API_LEVEL_PATTERN.matcher(platformDirectory.getName()); |
| if (matcher.matches()) { |
| apiLevels.add(Integer.parseInt(matcher.group(1))); |
| } |
| } |
| return apiLevels.build(); |
| } |
| } |