Use the default hash function in InlineFileArtifactValue.

PiperOrigin-RevId: 215802491

src/main/java/com/google/devtools/build/lib/actions/FileArtifactValue.java

diff --git a/src/main/java/com/google/devtools/build/lib/actions/FileArtifactValue.java b/src/main/java/com/google/devtools/build/lib/actions/FileArtifactValue.java
index deaaf79..a04f318 100644
--- a/src/main/java/com/google/devtools/build/lib/actions/FileArtifactValue.java
+++ b/src/main/java/com/google/devtools/build/lib/actions/FileArtifactValue.java
@@ -16,12 +16,12 @@
 import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.MoreObjects;
 import com.google.common.base.Preconditions;
-import com.google.common.hash.Hashing;
 import com.google.common.io.BaseEncoding;
 import com.google.devtools.build.lib.actions.cache.DigestUtils;
 import com.google.devtools.build.lib.concurrent.ThreadSafety.Immutable;
 import com.google.devtools.build.lib.concurrent.ThreadSafety.ThreadSafe;
 import com.google.devtools.build.lib.skyframe.serialization.autocodec.AutoCodec;
+import com.google.devtools.build.lib.vfs.DigestHashFunction;
 import com.google.devtools.build.lib.vfs.FileStatus;
 import com.google.devtools.build.lib.vfs.Path;
 import com.google.devtools.build.lib.vfs.PathFragment;
@@ -423,7 +423,8 @@
     }
 
     public InlineFileArtifactValue(byte[] bytes) {
-      this(bytes, Hashing.md5().hashBytes(bytes).asBytes());
+      this(bytes,
+          DigestHashFunction.getDefaultUnchecked().getHashFunction().hashBytes(bytes).asBytes());
     }
 
     public ByteArrayInputStream getInputStream() {

src/main/java/com/google/devtools/build/lib/vfs/DigestHashFunction.java

diff --git a/src/main/java/com/google/devtools/build/lib/vfs/DigestHashFunction.java b/src/main/java/com/google/devtools/build/lib/vfs/DigestHashFunction.java
index 7f76e73..c0c3866 100644
--- a/src/main/java/com/google/devtools/build/lib/vfs/DigestHashFunction.java
+++ b/src/main/java/com/google/devtools/build/lib/vfs/DigestHashFunction.java
@@ -144,6 +144,20 @@
     return defaultHash;
   }
 
+  /**
+   * Returns the default DigestHashFunction, or the testing default if unset.
+   */
+  public static DigestHashFunction getDefaultUnchecked() {
+    try {
+      return getDefault();
+    } catch (DefaultHashFunctionNotSetException e) {
+      // Some tests use this class without calling GoogleUnixFileSystemModule.globalInit().
+      System.err.println("Using DigestHashFunction.DEFAULT_HASH_FOR_TESTS for testing");
+      return DEFAULT_HASH_FOR_TESTS;
+    }
+  }
+
+
   /** Indicates that the default has not been initialized. */
   public static final class DefaultHashFunctionNotSetException extends Exception {
     DefaultHashFunctionNotSetException(String message) {