Examples with Hasher com.google.common.hash.Hasher used on opensource projects

Example 11 with Hasher

use of com.google.common.hash.Hasher in project buck by facebook.

the class DefaultFileHashCache method getDirHashCode.

private HashCodeAndFileType getDirHashCode(Path path) throws IOException {
    Hasher hasher = Hashing.sha1().newHasher();
    ImmutableSet<Path> children = PathHashing.hashPath(hasher, this, projectFilesystem, path);
    return HashCodeAndFileType.ofDirectory(hasher.hash(), children);
}

Example 12 with Hasher

use of com.google.common.hash.Hasher in project buck by facebook.

the class PathHashingTest method sameContentsSameNameHaveSameHash.

@Test
public void sameContentsSameNameHaveSameHash() throws IOException {
    SettableFakeClock clock = new SettableFakeClock(1000, 0);
    FakeProjectFilesystem filesystem1 = new FakeProjectFilesystem(clock);
    filesystem1.touch(Paths.get("foo/bar.txt"));
    FakeProjectFilesystem filesystem2 = new FakeProjectFilesystem(clock);
    filesystem2.touch(Paths.get("foo/bar.txt"));
    Hasher hasher1 = Hashing.sha1().newHasher();
    PathHashing.hashPath(hasher1, fileHashCache, filesystem1, Paths.get("foo"));
    Hasher hasher2 = Hashing.sha1().newHasher();
    PathHashing.hashPath(hasher2, fileHashCache, filesystem2, Paths.get("foo"));
    assertThat(hasher1.hash(), equalTo(hasher2.hash()));
}

Example 13 with Hasher

use of com.google.common.hash.Hasher in project buck by facebook.

the class PathHashingTest method sameContentsDifferentNameHaveDifferentHashes.

@Test
public void sameContentsDifferentNameHaveDifferentHashes() throws IOException {
    SettableFakeClock clock = new SettableFakeClock(1000, 0);
    FakeProjectFilesystem filesystem1 = new FakeProjectFilesystem(clock);
    filesystem1.touch(Paths.get("foo/bar.txt"));
    FakeProjectFilesystem filesystem2 = new FakeProjectFilesystem(clock);
    filesystem2.touch(Paths.get("foo/baz.txt"));
    Hasher hasher1 = Hashing.sha1().newHasher();
    PathHashing.hashPath(hasher1, fileHashCache, filesystem1, Paths.get("foo"));
    Hasher hasher2 = Hashing.sha1().newHasher();
    PathHashing.hashPath(hasher2, fileHashCache, filesystem2, Paths.get("foo"));
    assertThat(hasher1.hash(), not(equalTo(hasher2.hash())));
}

Example 14 with Hasher

use of com.google.common.hash.Hasher in project buck by facebook.

the class PathHashingTest method sameNameDifferentContentsHaveDifferentHashes.

@Test
public void sameNameDifferentContentsHaveDifferentHashes() throws IOException {
    SettableFakeClock clock = new SettableFakeClock(1000, 0);
    FakeProjectFilesystem filesystem1 = new FakeProjectFilesystem(clock);
    filesystem1.touch(Paths.get("foo/bar.txt"));
    FakeProjectFilesystem filesystem2 = new FakeProjectFilesystem(clock);
    filesystem2.touch(Paths.get("foo/bar.txt"));
    Hasher hasher1 = Hashing.sha1().newHasher();
    PathHashing.hashPath(hasher1, fileHashCache, filesystem1, Paths.get("foo"));
    Hasher hasher2 = Hashing.sha1().newHasher();
    PathHashing.hashPath(hasher2, modifiedFileHashCache, filesystem2, Paths.get("foo"));
    assertThat(hasher1.hash(), not(equalTo(hasher2.hash())));
}

Example 15 with Hasher

use of com.google.common.hash.Hasher in project buck by facebook.

the class PathHashingTest method hashDoesNotDependOnFilesystemIterationOrder.

@Test
public void hashDoesNotDependOnFilesystemIterationOrder() throws IOException {
    SettableFakeClock clock = new SettableFakeClock(1000, 0);
    FakeProjectFilesystem filesystem1 = new FakeProjectFilesystem(clock);
    filesystem1.touch(Paths.get("foo/foo.txt"));
    filesystem1.touch(Paths.get("foo/bar.txt"));
    filesystem1.touch(Paths.get("foo/baz.txt"));
    FakeProjectFilesystem filesystem2 = new FakeProjectFilesystem(clock);
    filesystem2.touch(Paths.get("foo/bar.txt"));
    filesystem2.touch(Paths.get("foo/baz.txt"));
    filesystem2.touch(Paths.get("foo/foo.txt"));
    Hasher hasher1 = Hashing.sha1().newHasher();
    PathHashing.hashPath(hasher1, fileHashCache, filesystem1, Paths.get("foo"));
    Hasher hasher2 = Hashing.sha1().newHasher();
    PathHashing.hashPath(hasher2, fileHashCache, filesystem2, Paths.get("foo"));
    assertThat(hasher1.hash(), equalTo(hasher2.hash()));
}