Examples with Optional java.util.Optional used on opensource projects

Example 46 with Optional

use of java.util.Optional in project buck by facebook.

the class ZipStep method execute.

@Override
public StepExecutionResult execute(ExecutionContext context) {
    if (filesystem.exists(pathToZipFile)) {
        context.postEvent(ConsoleEvent.severe("Attempting to overwrite an existing zip: %s", pathToZipFile));
        return StepExecutionResult.ERROR;
    }
    // Since filesystem traversals can be non-deterministic, sort the entries we find into
    // a tree map before writing them out.
    final Map<String, Pair<CustomZipEntry, Optional<Path>>> entries = Maps.newTreeMap();
    FileVisitor<Path> pathFileVisitor = new SimpleFileVisitor<Path>() {

        private boolean isSkipFile(Path file) {
            return !paths.isEmpty() && !paths.contains(file);
        }

        private String getEntryName(Path path) {
            Path relativePath = junkPaths ? path.getFileName() : baseDir.relativize(path);
            return MorePaths.pathWithUnixSeparators(relativePath);
        }

        private CustomZipEntry getZipEntry(String entryName, final Path path, BasicFileAttributes attr) throws IOException {
            boolean isDirectory = filesystem.isDirectory(path);
            if (isDirectory) {
                entryName += "/";
            }
            CustomZipEntry entry = new CustomZipEntry(entryName);
            // We want deterministic ZIPs, so avoid mtimes.
            entry.setFakeTime();
            entry.setCompressionLevel(isDirectory ? ZipCompressionLevel.MIN_COMPRESSION_LEVEL.getValue() : compressionLevel.getValue());
            // If we're using STORED files, we must manually set the CRC, size, and compressed size.
            if (entry.getMethod() == ZipEntry.STORED && !isDirectory) {
                entry.setSize(attr.size());
                entry.setCompressedSize(attr.size());
                entry.setCrc(new ByteSource() {

                    @Override
                    public InputStream openStream() throws IOException {
                        return filesystem.newFileInputStream(path);
                    }
                }.hash(Hashing.crc32()).padToLong());
            }
            long externalAttributes = filesystem.getFileAttributesForZipEntry(path);
            LOG.verbose("Setting mode for entry %s path %s to 0x%08X", entryName, path, externalAttributes);
            entry.setExternalAttributes(externalAttributes);
            return entry;
        }

        @Override
        public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
            if (!isSkipFile(file)) {
                CustomZipEntry entry = getZipEntry(getEntryName(file), file, attrs);
                entries.put(entry.getName(), new Pair<>(entry, Optional.of(file)));
            }
            return FileVisitResult.CONTINUE;
        }

        @Override
        public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) throws IOException {
            if (!dir.equals(baseDir) && !isSkipFile(dir)) {
                CustomZipEntry entry = getZipEntry(getEntryName(dir), dir, attrs);
                entries.put(entry.getName(), new Pair<>(entry, Optional.empty()));
            }
            return FileVisitResult.CONTINUE;
        }
    };
    try (BufferedOutputStream baseOut = new BufferedOutputStream(filesystem.newFileOutputStream(pathToZipFile));
        CustomZipOutputStream out = ZipOutputStreams.newOutputStream(baseOut, THROW_EXCEPTION)) {
        filesystem.walkRelativeFileTree(baseDir, pathFileVisitor);
        // Write the entries out using the iteration order of the tree map above.
        for (Pair<CustomZipEntry, Optional<Path>> entry : entries.values()) {
            out.putNextEntry(entry.getFirst());
            if (entry.getSecond().isPresent()) {
                try (InputStream input = filesystem.newFileInputStream(entry.getSecond().get())) {
                    ByteStreams.copy(input, out);
                }
            }
            out.closeEntry();
        }
    } catch (IOException e) {
        context.logError(e, "Error creating zip file %s", pathToZipFile);
        return StepExecutionResult.ERROR;
    }
    return StepExecutionResult.SUCCESS;
}

Example 47 with Optional

use of java.util.Optional in project buck by facebook.

the class TargetNodeTranslator method translateNode.

/**
   * @return a copy of the given {@link TargetNode} with all found {@link BuildTarget}s translated,
   *         or {@link Optional#empty()} if the node requires no translation.
   */
public <A> Optional<TargetNode<A, ?>> translateNode(TargetNode<A, ?> node) {
    CellPathResolver cellPathResolver = node.getCellNames();
    BuildTargetPatternParser<BuildTargetPattern> pattern = BuildTargetPatternParser.forBaseName(node.getBuildTarget().getBaseName());
    Optional<BuildTarget> target = translateBuildTarget(node.getBuildTarget());
    Optional<A> constructorArg = translateConstructorArg(cellPathResolver, pattern, node);
    Optional<ImmutableSet<BuildTarget>> declaredDeps = translateSet(cellPathResolver, pattern, node.getDeclaredDeps());
    Optional<ImmutableSet<BuildTarget>> extraDeps = translateSet(cellPathResolver, pattern, node.getExtraDeps());
    Optional<ImmutableMap<BuildTarget, Version>> newSelectedVersions = getSelectedVersions(node.getBuildTarget());
    Optional<ImmutableMap<BuildTarget, Version>> oldSelectedVersions = node.getSelectedVersions();
    Optional<Optional<ImmutableMap<BuildTarget, Version>>> selectedVersions = oldSelectedVersions.equals(newSelectedVersions) ? Optional.empty() : Optional.of(newSelectedVersions);
    // If nothing has changed, don't generate a new node.
    if (!target.isPresent() && !constructorArg.isPresent() && !declaredDeps.isPresent() && !extraDeps.isPresent() && !selectedVersions.isPresent()) {
        return Optional.empty();
    }
    return Optional.of(node.withTargetConstructorArgDepsAndSelectedVerisons(target.orElse(node.getBuildTarget()), constructorArg.orElse(node.getConstructorArg()), declaredDeps.orElse(node.getDeclaredDeps()), extraDeps.orElse(node.getExtraDeps()), selectedVersions.orElse(oldSelectedVersions)));
}

Example 48 with Optional

use of java.util.Optional in project buck by facebook.

the class AppleConfigTest method getXcodeSelectDetectedAppleDeveloperDirectorySupplier.

@Test
public void getXcodeSelectDetectedAppleDeveloperDirectorySupplier() {
    BuckConfig buckConfig = FakeBuckConfig.builder().build();
    AppleConfig config = new AppleConfig(buckConfig);
    ProcessExecutorParams xcodeSelectParams = ProcessExecutorParams.builder().setCommand(ImmutableList.of("xcode-select", "--print-path")).build();
    FakeProcess fakeXcodeSelect = new FakeProcess(0, "/path/to/another/place", "");
    FakeProcessExecutor processExecutor = new FakeProcessExecutor(ImmutableMap.of(xcodeSelectParams, fakeXcodeSelect));
    Supplier<Optional<Path>> supplier = config.getAppleDeveloperDirectorySupplier(processExecutor);
    assertNotNull(supplier);
    assertEquals(Optional.of(Paths.get("/path/to/another/place")), supplier.get());
}

Example 49 with Optional

use of java.util.Optional in project buck by facebook.

the class AppleConfigTest method getSpecifiedAppleDeveloperDirectorySupplier.

@Test
public void getSpecifiedAppleDeveloperDirectorySupplier() {
    BuckConfig buckConfig = FakeBuckConfig.builder().setSections(ImmutableMap.of("apple", ImmutableMap.of("xcode_developer_dir", "/path/to/somewhere"))).build();
    AppleConfig config = new AppleConfig(buckConfig);
    Supplier<Optional<Path>> supplier = config.getAppleDeveloperDirectorySupplier(new FakeProcessExecutor());
    assertNotNull(supplier);
    assertEquals(Optional.of(Paths.get("/path/to/somewhere")), supplier.get());
    // Developer directory for tests should fall back to developer dir if not separately specified.
    Supplier<Optional<Path>> supplierForTests = config.getAppleDeveloperDirectorySupplierForTests(new FakeProcessExecutor());
    assertNotNull(supplierForTests);
    assertEquals(Optional.of(Paths.get("/path/to/somewhere")), supplierForTests.get());
}

Example 50 with Optional

use of java.util.Optional in project buck by facebook.

the class ProvisioningProfileCopyStepTest method testDoesNotFailInDryRunMode.

@Test
public void testDoesNotFailInDryRunMode() throws Exception {
    assumeTrue(Platform.detect() == Platform.MACOS);
    Path emptyDir = TestDataHelper.getTestDataDirectory(this).resolve("provisioning_profiles_empty");
    ProvisioningProfileCopyStep step = new ProvisioningProfileCopyStep(projectFilesystem, testdataDir.resolve("Info.plist"), ApplePlatform.IPHONEOS, Optional.empty(), Optional.empty(), ProvisioningProfileStore.fromSearchPath(new DefaultProcessExecutor(new TestConsole()), ProvisioningProfileStore.DEFAULT_READ_COMMAND, emptyDir), outputFile, xcentFile, codeSignIdentityStore, Optional.of(dryRunResultFile));
    Future<Optional<ProvisioningProfileMetadata>> profileFuture = step.getSelectedProvisioningProfileFuture();
    step.execute(executionContext);
    assertTrue(profileFuture.isDone());
    assertNotNull(profileFuture.get());
    assertFalse(profileFuture.get().isPresent());
    Optional<String> resultContents = projectFilesystem.readFileIfItExists(dryRunResultFile);
    assertTrue(resultContents.isPresent());
    NSDictionary resultPlist = (NSDictionary) PropertyListParser.parse(resultContents.get().getBytes(Charsets.UTF_8));
    assertEquals(new NSString("com.example.TestApp"), resultPlist.get("bundle-id"));
}