Examples with ZipFileSystem com.google.devtools.build.lib.vfs.ZipFileSystem used on opensource projects

Example 1 with ZipFileSystem

use of com.google.devtools.build.lib.vfs.ZipFileSystem in project bazel by bazelbuild.

the class FdoSupport method extractFdoZip.

/**
   * Extracts the FDO zip file and collects data from it that's needed during analysis.
   *
   * <p>When an {@code --fdo_optimize} compile is requested, unpacks the given
   * FDO gcda zip file into a clean working directory under execRoot.
   *
   * @throws FdoException if the FDO ZIP contains a file of unknown type
   */
private static FdoZipContents extractFdoZip(FdoMode fdoMode, LipoMode lipoMode, Path execRoot, Path fdoProfile, PathFragment fdoRootExecPath, String productName) throws IOException, FdoException {
    // The execRoot != null case is only there for testing. We cannot provide a real ZIP file in
    // tests because ZipFileSystem does not work with a ZIP on an in-memory file system.
    // IMPORTANT: Keep in sync with #declareSkyframeDependencies to avoid incrementality issues.
    ImmutableSet<PathFragment> gcdaFiles = ImmutableSet.of();
    ImmutableMultimap<PathFragment, PathFragment> imports = ImmutableMultimap.of();
    if (fdoProfile != null && execRoot != null) {
        Path fdoDirPath = execRoot.getRelative(fdoRootExecPath);
        FileSystemUtils.deleteTreesBelow(fdoDirPath);
        FileSystemUtils.createDirectoryAndParents(fdoDirPath);
        if (fdoMode == FdoMode.AUTO_FDO) {
            if (lipoMode != LipoMode.OFF) {
                imports = readAutoFdoImports(getAutoFdoImportsPath(fdoProfile));
            }
            FileSystemUtils.ensureSymbolicLink(execRoot.getRelative(getAutoProfilePath(fdoProfile, fdoRootExecPath)), fdoProfile);
        } else if (fdoMode == FdoMode.LLVM_FDO) {
            FileSystemUtils.ensureSymbolicLink(execRoot.getRelative(getLLVMProfilePath(fdoProfile, fdoRootExecPath)), fdoProfile);
        } else {
            Path zipFilePath = new ZipFileSystem(fdoProfile).getRootDirectory();
            String outputSymlinkName = productName + "-out";
            if (!zipFilePath.getRelative(outputSymlinkName).isDirectory()) {
                throw new ZipException("FDO zip files must be zipped directly above '" + outputSymlinkName + "' for the compiler to find the profile");
            }
            ImmutableSet.Builder<PathFragment> gcdaFilesBuilder = ImmutableSet.builder();
            ImmutableMultimap.Builder<PathFragment, PathFragment> importsBuilder = ImmutableMultimap.builder();
            extractFdoZipDirectory(zipFilePath, fdoDirPath, gcdaFilesBuilder, importsBuilder);
            gcdaFiles = gcdaFilesBuilder.build();
            imports = importsBuilder.build();
        }
    }
    return new FdoZipContents(gcdaFiles, imports);
}