[DO NOT MERGE] Improvements and fixes for BLE scanning within CDM

Test: manual
Bug: 168052577
Change-Id: I16ec39d1139ab6ab0c2c84364493268e8f395d43
(cherry picked from commit 10a1973972398360d0e2913e5c5348565c9f63c8)

1 files changed, 39 insertions, 0 deletions

diff --git a/core/java/com/android/internal/infra/ServiceConnector.java b/core/java/com/android/internal/infra/ServiceConnector.java
index fc95275c2e1b..af21f8183d3a 100644
--- a/core/java/com/android/internal/infra/ServiceConnector.java
+++ b/core/java/com/android/internal/infra/ServiceConnector.java
@@ -726,4 +726,43 @@ public interface ServiceConnector<I extends IInterface> {
             }
         }
     }
+
+    /**
+     * A {@link ServiceConnector} that doesn't connect to anything.
+     *
+     * @param <T> the type of the {@link IInterface ipc interface} for the remote service
+     */
+    class NoOp<T extends IInterface> extends AndroidFuture<Object> implements ServiceConnector<T> {
+        {
+            completeExceptionally(new IllegalStateException("ServiceConnector is a no-op"));
+        }
+
+        @Override
+        public boolean run(@NonNull VoidJob<T> job) {
+            return false;
+        }
+
+        @Override
+        public AndroidFuture<Void> post(@NonNull VoidJob<T> job) {
+            return (AndroidFuture) this;
+        }
+
+        @Override
+        public <R> AndroidFuture<R> postForResult(@NonNull Job<T, R> job) {
+            return (AndroidFuture) this;
+        }
+
+        @Override
+        public <R> AndroidFuture<R> postAsync(@NonNull Job<T, CompletableFuture<R>> job) {
+            return (AndroidFuture) this;
+        }
+
+        @Override
+        public AndroidFuture<T> connect() {
+            return (AndroidFuture) this;
+        }
+
+        @Override
+        public void unbind() {}
+    }
 }