ActionFS supports fast digests. Add test coverage for this and some file metadata operations.

RELNOTES: None
PiperOrigin-RevId: 200765925

1 files changed, 8 insertions, 2 deletions

diff --git a/src/main/java/com/google/devtools/build/lib/skyframe/ActionFileSystem.java b/src/main/java/com/google/devtools/build/lib/skyframe/ActionFileSystem.java
index 604f1c3dae..e5430355a6 100644
--- a/src/main/java/com/google/devtools/build/lib/skyframe/ActionFileSystem.java
+++ b/src/main/java/com/google/devtools/build/lib/skyframe/ActionFileSystem.java
@@ -216,7 +216,8 @@ final class ActionFileSystem extends AbstractFileSystemWithCustomStat
 
       @Override
       public boolean isDirectory() {
-        // TODO(felly): Support directory awareness.
+        // TODO(felly): Support directory awareness, and consider disallowing directory artifacts
+        // eagerly at ActionFS construction.
         return false;
       }
 
@@ -265,7 +266,7 @@ final class ActionFileSystem extends AbstractFileSystemWithCustomStat
 
   @Override
   protected long getFileSize(Path path, boolean followSymlinks) throws IOException {
-    return getMetadataOrThrowFileNotFound(path).getSize();
+    return stat(path, followSymlinks).getSize();
   }
 
   @Override
@@ -312,6 +313,11 @@ final class ActionFileSystem extends AbstractFileSystemWithCustomStat
   }
 
   @Override
+  protected byte[] getDigest(Path path, HashFunction hash) throws IOException {
+    return getFastDigest(path, hash);
+  }
+
+  @Override
   protected Collection<String> getDirectoryEntries(Path path) throws IOException {
     // TODO(felly): Support directory traversal.
     return ImmutableList.of();