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// Copyright 2015 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.remote;
import static com.google.common.truth.Truth.assertThat;
import com.google.common.collect.ImmutableCollection;
import com.google.devtools.build.lib.actions.ActionInput;
import com.google.devtools.build.lib.actions.ActionInputFileCache;
import com.google.devtools.build.lib.actions.ActionInputHelper;
import com.google.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.actions.ArtifactRoot;
import com.google.devtools.build.lib.clock.BlazeClock;
import com.google.devtools.build.lib.exec.SingleBuildFileCache;
import com.google.devtools.build.lib.remote.TreeNodeRepository.TreeNode;
import com.google.devtools.build.lib.testutil.Scratch;
import com.google.devtools.build.lib.vfs.FileSystem.HashFunction;
import com.google.devtools.build.lib.vfs.Path;
import com.google.devtools.build.lib.vfs.PathFragment;
import com.google.devtools.build.lib.vfs.inmemoryfs.InMemoryFileSystem;
import com.google.devtools.remoteexecution.v1test.Digest;
import com.google.devtools.remoteexecution.v1test.Directory;
import java.io.IOException;
import java.util.ArrayList;
import java.util.SortedMap;
import java.util.TreeMap;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/** Tests for {@link TreeNodeRepository}. */
@RunWith(JUnit4.class)
public class TreeNodeRepositoryTest {
private Scratch scratch;
private DigestUtil digestUtil;
private Path execRoot;
private ArtifactRoot rootDir;
@Before
public final void setRootDir() throws Exception {
digestUtil = new DigestUtil(HashFunction.SHA256);
scratch = new Scratch(new InMemoryFileSystem(BlazeClock.instance(), HashFunction.SHA256));
execRoot = scratch.getFileSystem().getPath("/exec/root");
rootDir = ArtifactRoot.asSourceRoot(scratch.dir("/exec/root"));
}
private TreeNodeRepository createTestTreeNodeRepository() {
ActionInputFileCache inputFileCache =
new SingleBuildFileCache(execRoot.getPathString(), scratch.getFileSystem());
return new TreeNodeRepository(execRoot, inputFileCache, digestUtil);
}
private TreeNode buildFromActionInputs(TreeNodeRepository repo, ActionInput... inputs)
throws IOException {
TreeMap<PathFragment, ActionInput> sortedMap = new TreeMap<>();
for (ActionInput input : inputs) {
sortedMap.put(PathFragment.create(input.getExecPathString()), input);
}
return repo.buildFromActionInputs(sortedMap);
}
@Test
@SuppressWarnings("ReferenceEquality")
public void testSubtreeReusage() throws Exception {
Artifact fooCc = new Artifact(scratch.file("/exec/root/a/foo.cc"), rootDir);
Artifact fooH = new Artifact(scratch.file("/exec/root/a/foo.h"), rootDir);
Artifact bar = new Artifact(scratch.file("/exec/root/b/bar.txt"), rootDir);
Artifact baz = new Artifact(scratch.file("/exec/root/c/baz.txt"), rootDir);
TreeNodeRepository repo = createTestTreeNodeRepository();
TreeNode root1 = buildFromActionInputs(repo, fooCc, fooH, bar);
TreeNode root2 = buildFromActionInputs(repo, fooCc, fooH, baz);
// Reusing same node for the "a" subtree.
assertThat(
root1.getChildEntries().get(0).getChild() == root2.getChildEntries().get(0).getChild())
.isTrue();
}
@Test
public void testMerkleDigests() throws Exception {
Artifact foo = new Artifact(scratch.file("/exec/root/a/foo", "1"), rootDir);
Artifact bar = new Artifact(scratch.file("/exec/root/a/bar", "11"), rootDir);
TreeNodeRepository repo = createTestTreeNodeRepository();
TreeNode root = buildFromActionInputs(repo, foo, bar);
TreeNode aNode = root.getChildEntries().get(0).getChild();
TreeNode fooNode = aNode.getChildEntries().get(1).getChild(); // foo > bar in sort order!
TreeNode barNode = aNode.getChildEntries().get(0).getChild();
repo.computeMerkleDigests(root);
ImmutableCollection<Digest> digests = repo.getAllDigests(root);
Digest rootDigest = repo.getMerkleDigest(root);
Digest aDigest = repo.getMerkleDigest(aNode);
Digest fooDigest = repo.getMerkleDigest(fooNode); // The contents digest.
Digest barDigest = repo.getMerkleDigest(barNode);
assertThat(digests).containsExactly(rootDigest, aDigest, barDigest, fooDigest);
ArrayList<Directory> directories = new ArrayList<>();
ArrayList<ActionInput> actionInputs = new ArrayList<>();
repo.getDataFromDigests(digests, actionInputs, directories);
assertThat(actionInputs).containsExactly(bar, foo);
assertThat(directories).hasSize(2);
Directory rootDirectory = directories.get(0);
assertThat(rootDirectory.getDirectories(0).getName()).isEqualTo("a");
assertThat(rootDirectory.getDirectories(0).getDigest()).isEqualTo(aDigest);
Directory aDirectory = directories.get(1);
assertThat(aDirectory.getFiles(0).getName()).isEqualTo("bar");
assertThat(aDirectory.getFiles(0).getDigest()).isEqualTo(barDigest);
assertThat(aDirectory.getFiles(1).getName()).isEqualTo("foo");
assertThat(aDirectory.getFiles(1).getDigest()).isEqualTo(fooDigest);
}
@Test
public void testGetAllDigests() throws Exception {
Artifact foo1 = new Artifact(scratch.file("/exec/root/a/foo", "1"), rootDir);
Artifact foo2 = new Artifact(scratch.file("/exec/root/b/foo", "1"), rootDir);
Artifact foo3 = new Artifact(scratch.file("/exec/root/c/foo", "1"), rootDir);
TreeNodeRepository repo = createTestTreeNodeRepository();
TreeNode root = buildFromActionInputs(repo, foo1, foo2, foo3);
repo.computeMerkleDigests(root);
// Reusing same node for the "foo" subtree: only need the root, root child, and foo contents:
assertThat(repo.getAllDigests(root)).hasSize(3);
}
@Test
public void testEmptyTree() throws Exception {
SortedMap<PathFragment, ActionInput> inputs = new TreeMap<>();
TreeNodeRepository repo = createTestTreeNodeRepository();
TreeNode root = repo.buildFromActionInputs(inputs);
repo.computeMerkleDigests(root);
assertThat(root.getChildEntries()).isEmpty();
}
@Test
public void testDirectoryInput() throws Exception {
Artifact foo = new Artifact(scratch.dir("/exec/root/a/foo"), rootDir);
scratch.file("/exec/root/a/foo/foo.h", "1");
ActionInput fooH = ActionInputHelper.fromPath("/exec/root/a/foo/foo.h");
scratch.file("/exec/root/a/foo/foo.cc", "2");
ActionInput fooCc = ActionInputHelper.fromPath("/exec/root/a/foo/foo.cc");
Artifact bar = new Artifact(scratch.file("/exec/root/a/bar.txt"), rootDir);
TreeNodeRepository repo = createTestTreeNodeRepository();
TreeNode root = buildFromActionInputs(repo, foo, bar);
TreeNode aNode = root.getChildEntries().get(0).getChild();
TreeNode fooNode = aNode.getChildEntries().get(1).getChild(); // foo > bar in sort order!
TreeNode barNode = aNode.getChildEntries().get(0).getChild();
TreeNode fooHNode =
fooNode.getChildEntries().get(1).getChild(); // foo.h > foo.cc in sort order!
TreeNode fooCcNode = fooNode.getChildEntries().get(0).getChild();
repo.computeMerkleDigests(root);
ImmutableCollection<Digest> digests = repo.getAllDigests(root);
Digest rootDigest = repo.getMerkleDigest(root);
Digest aDigest = repo.getMerkleDigest(aNode);
Digest fooDigest = repo.getMerkleDigest(fooNode);
Digest fooHDigest = repo.getMerkleDigest(fooHNode);
Digest fooCcDigest = repo.getMerkleDigest(fooCcNode);
Digest barDigest = repo.getMerkleDigest(barNode);
assertThat(digests)
.containsExactly(rootDigest, aDigest, barDigest, fooDigest, fooHDigest, fooCcDigest);
ArrayList<Directory> directories = new ArrayList<>();
ArrayList<ActionInput> actionInputs = new ArrayList<>();
repo.getDataFromDigests(digests, actionInputs, directories);
assertThat(actionInputs).containsExactly(bar, fooH, fooCc);
assertThat(directories).hasSize(3); // root, root/a and root/a/foo
Directory rootDirectory = directories.get(0);
assertThat(rootDirectory.getDirectories(0).getName()).isEqualTo("a");
assertThat(rootDirectory.getDirectories(0).getDigest()).isEqualTo(aDigest);
Directory aDirectory = directories.get(1);
assertThat(aDirectory.getFiles(0).getName()).isEqualTo("bar.txt");
assertThat(aDirectory.getFiles(0).getDigest()).isEqualTo(barDigest);
assertThat(aDirectory.getDirectories(0).getName()).isEqualTo("foo");
assertThat(aDirectory.getDirectories(0).getDigest()).isEqualTo(fooDigest);
Directory fooDirectory = directories.get(2);
assertThat(fooDirectory.getFiles(0).getName()).isEqualTo("foo.cc");
assertThat(fooDirectory.getFiles(0).getDigest()).isEqualTo(fooCcDigest);
assertThat(fooDirectory.getFiles(1).getName()).isEqualTo("foo.h");
assertThat(fooDirectory.getFiles(1).getDigest()).isEqualTo(fooHDigest);
}
}
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