Add a mechanism to SpawnResult to return an in-memory output

PiperOrigin-RevId: 185370712

1 files changed, 12 insertions, 0 deletions

diff --git a/src/main/java/com/google/devtools/build/lib/actions/SpawnResult.java b/src/main/java/com/google/devtools/build/lib/actions/SpawnResult.java
index b6a26954d4..0c5feaad68 100644
--- a/src/main/java/com/google/devtools/build/lib/actions/SpawnResult.java
+++ b/src/main/java/com/google/devtools/build/lib/actions/SpawnResult.java
@@ -17,6 +17,7 @@ import com.google.common.base.Preconditions;
 import com.google.devtools.build.lib.concurrent.ThreadSafety.Immutable;
 import com.google.devtools.build.lib.concurrent.ThreadSafety.ThreadSafe;
 import com.google.devtools.build.lib.shell.TerminationStatus;
+import java.io.InputStream;
 import java.time.Duration;
 import java.util.Locale;
 import java.util.Optional;
@@ -183,6 +184,17 @@ public interface SpawnResult {
     return "";
   }
 
+  /**
+   * SpawnResults can optionally support returning outputs in-memory. Such outputs can be obtained
+   * from this method if so.
+   *
+   * @param output
+   */
+  @Nullable
+  default InputStream getInMemoryOutput(ActionInput output) {
+    return null;
+  }
+
   String getDetailMessage(
       String messagePrefix, String message, boolean catastrophe, boolean forciblyRunRemotely);