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

Example 81 with Path

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

the class DigestUtilsTest method assertDigestCalculationConcurrency.

private static void assertDigestCalculationConcurrency(boolean expectConcurrent, final boolean fastDigest, final int fileSize1, final int fileSize2, HashFunction hf) throws Exception {
    // Used to block test threads.
    final CountDownLatch barrierLatch = new CountDownLatch(2);
    // Used to block main thread.
    final CountDownLatch readyLatch = new CountDownLatch(1);
    FileSystem myfs = new InMemoryFileSystem(BlazeClock.instance()) {

        @Override
        protected byte[] getMD5Digest(Path path) throws IOException {
            try {
                barrierLatch.countDown();
                readyLatch.countDown();
                // Either both threads will be inside getMD5Digest at the same time or they
                // both will be blocked.
                barrierLatch.await();
            } catch (Exception e) {
                throw new IOException(e);
            }
            return super.getMD5Digest(path);
        }

        @Override
        protected byte[] getSHA1Digest(Path path) throws IOException {
            try {
                barrierLatch.countDown();
                readyLatch.countDown();
                // Either both threads will be inside getSHA1Digest at the same time or they
                // both will be blocked.
                barrierLatch.await();
            } catch (Exception e) {
                throw new IOException(e);
            }
            return super.getSHA1Digest(path);
        }

        @Override
        protected byte[] getFastDigest(Path path, HashFunction hashFunction) throws IOException {
            return fastDigest ? super.getDigest(path, hashFunction) : null;
        }
    };
    FileSystem.setDigestFunctionForTesting(hf);
    final Path myFile1 = myfs.getPath("/f1.dat");
    final Path myFile2 = myfs.getPath("/f2.dat");
    FileSystemUtils.writeContentAsLatin1(myFile1, Strings.repeat("a", fileSize1));
    FileSystemUtils.writeContentAsLatin1(myFile2, Strings.repeat("b", fileSize2));
    TestThread thread1 = new TestThread() {

        @Override
        public void runTest() throws Exception {
            DigestUtils.getDigestOrFail(myFile1, fileSize1);
        }
    };
    TestThread thread2 = new TestThread() {

        @Override
        public void runTest() throws Exception {
            DigestUtils.getDigestOrFail(myFile2, fileSize2);
        }
    };
    thread1.start();
    thread2.start();
    if (!expectConcurrent) {
        // Synchronized case.
        // Wait until at least one thread reached getMD5Digest().
        assertTrue(readyLatch.await(TestUtils.WAIT_TIMEOUT_SECONDS, TimeUnit.SECONDS));
        // Only 1 thread should be inside getMD5Digest().
        assertEquals(1, barrierLatch.getCount());
        // Release barrier latch, allowing both threads to proceed.
        barrierLatch.countDown();
    }
    // Test successful execution within 5 seconds.
    thread1.joinAndAssertState(TestUtils.WAIT_TIMEOUT_MILLISECONDS);
    thread2.joinAndAssertState(TestUtils.WAIT_TIMEOUT_MILLISECONDS);
}

Example 82 with Path

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

the class DigestUtilsTest method assertRecoverFromMalformedDigest.

public void assertRecoverFromMalformedDigest(HashFunction... hashFunctions) throws Exception {
    final byte[] malformed = { 0, 0, 0 };
    FileSystem myFS = new InMemoryFileSystem(BlazeClock.instance()) {

        @Override
        protected byte[] getFastDigest(Path path, HashFunction hashFunction) throws IOException {
            // Digest functions have more than 3 bytes, usually at least 16.
            return malformed;
        }
    };
    Path path = myFS.getPath("/file");
    FileSystemUtils.writeContentAsLatin1(path, "a");
    for (HashFunction hf : hashFunctions) {
        FileSystem.setDigestFunctionForTesting(hf);
        byte[] result = DigestUtils.getDigestOrFail(path, 1);
        assertArrayEquals(path.getDigest(), result);
        assertNotSame(malformed, result);
        assertTrue(path.isValidDigest(result));
    }
}

Example 83 with Path

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

the class DigestUtilsTest method testCache.

@Test
public void testCache() throws Exception {
    final AtomicInteger getFastDigestCounter = new AtomicInteger(0);
    final AtomicInteger getDigestCounter = new AtomicInteger(0);
    FileSystem tracingFileSystem = new InMemoryFileSystem(BlazeClock.instance()) {

        @Override
        protected byte[] getFastDigest(Path path, HashFunction hashFunction) throws IOException {
            getFastDigestCounter.incrementAndGet();
            return null;
        }

        @Override
        protected byte[] getDigest(Path path) throws IOException {
            getDigestCounter.incrementAndGet();
            return super.getDigest(path);
        }
    };
    DigestUtils.configureCache(2);
    final Path file1 = tracingFileSystem.getPath("/1.txt");
    final Path file2 = tracingFileSystem.getPath("/2.txt");
    final Path file3 = tracingFileSystem.getPath("/3.txt");
    FileSystemUtils.writeContentAsLatin1(file1, "some contents");
    FileSystemUtils.writeContentAsLatin1(file2, "some other contents");
    FileSystemUtils.writeContentAsLatin1(file3, "and something else");
    byte[] digest1 = DigestUtils.getDigestOrFail(file1, file1.getFileSize());
    assertEquals(1, getFastDigestCounter.get());
    assertEquals(1, getDigestCounter.get());
    new CacheStatsChecker().evictionCount(0).hitCount(0).missCount(1).check();
    byte[] digest2 = DigestUtils.getDigestOrFail(file1, file1.getFileSize());
    assertEquals(2, getFastDigestCounter.get());
    assertEquals(1, getDigestCounter.get());
    new CacheStatsChecker().evictionCount(0).hitCount(1).missCount(1).check();
    assertArrayEquals(digest1, digest2);
    // Evict the digest for the previous file.
    DigestUtils.getDigestOrFail(file2, file2.getFileSize());
    DigestUtils.getDigestOrFail(file3, file3.getFileSize());
    new CacheStatsChecker().evictionCount(1).hitCount(1).missCount(3).check();
    // And now try to recompute it.
    byte[] digest3 = DigestUtils.getDigestOrFail(file1, file1.getFileSize());
    new CacheStatsChecker().evictionCount(2).hitCount(1).missCount(4).check();
    assertArrayEquals(digest1, digest3);
}

Example 84 with Path

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

the class ExecutableSymlinkActionTest method testFailIfInputIsNotExecutable.

@Test
public void testFailIfInputIsNotExecutable() throws Exception {
    Path file = inputRoot.getPath().getChild("some-file");
    FileSystemUtils.createEmptyFile(file);
    file.setExecutable(/*executable=*/
    false);
    Artifact input = new Artifact(file, inputRoot);
    Artifact output = new Artifact(outputRoot.getPath().getChild("some-output"), outputRoot);
    ExecutableSymlinkAction action = new ExecutableSymlinkAction(NULL_ACTION_OWNER, input, output);
    try {
        action.execute(createContext());
        fail();
    } catch (ActionExecutionException e) {
        String want = "'some-file' is not executable";
        String got = e.getMessage();
        assertTrue(String.format("got %s, want %s", got, want), got.contains(want));
    }
}

Example 85 with Path

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

the class RootTest method testAsDerivedRoot.

@Test
public void testAsDerivedRoot() throws IOException {
    Path execRoot = scratch.dir("/exec");
    Path rootDir = scratch.dir("/exec/root");
    Root root = Root.asDerivedRoot(execRoot, rootDir);
    assertFalse(root.isSourceRoot());
    assertEquals(new PathFragment("root"), root.getExecPath());
    assertEquals(rootDir, root.getPath());
    assertEquals("/exec/root[derived]", root.toString());
}