Connect the new API from ApexService to ApexManager

Bug: 187444679
Test: atest ApexManagerTest
Change-Id: I60482a180d873a5f65887d0a5bb4230f75cb55df
Merged-In: I60482a180d873a5f65887d0a5bb4230f75cb55df
(cherry picked from commit 2bcdaf91d5)

services/core/java/com/android/server/pm/ApexManager.java

@@ -237,6 +237,14 @@ public abstract class ApexManager {
     abstract ApexInfoList submitStagedSession(ApexSessionParams params)
             throws PackageManagerException;
 
+    /**
+     * Returns {@code ApeInfo} about apex sessions that have been marked ready via
+     * {@link #markStagedSessionReady(int)}
+     *
+     * Returns empty array if there is no staged apex session or if there is any error.
+     */
+    abstract ApexInfo[] getStagedApexInfos(ApexSessionParams params);
+
     /**
      * Mark a staged session previously submitted using {@code submitStagedSession} as ready to be
      * applied at next reboot.
@@ -706,6 +714,19 @@ public abstract class ApexManager {
             }
         }
 
+        @Override
+        ApexInfo[] getStagedApexInfos(ApexSessionParams params) {
+            try {
+                return waitForApexService().getStagedApexInfos(params);
+            } catch (RemoteException re) {
+                Slog.w(TAG, "Unable to contact apexservice" + re.getMessage());
+                throw new RuntimeException(re);
+            } catch (Exception e) {
+                Slog.w(TAG, "Failed to collect staged apex infos" + e.getMessage());
+                return new ApexInfo[0];
+            }
+        }
+
         @Override
         void markStagedSessionReady(int sessionId) throws PackageManagerException {
             try {
@@ -1099,6 +1120,11 @@ public abstract class ApexManager {
                     "Device doesn't support updating APEX");
         }
 
+        @Override
+        ApexInfo[] getStagedApexInfos(ApexSessionParams params) {
+            throw new UnsupportedOperationException();
+        }
+
         @Override
         void markStagedSessionReady(int sessionId) {
             throw new UnsupportedOperationException();

services/tests/servicestests/src/com/android/server/pm/ApexManagerTest.java

@@ -37,6 +37,7 @@ import android.apex.IApexService;
 import android.content.Context;
 import android.content.pm.PackageInfo;
 import android.os.RemoteException;
+import android.os.ServiceSpecificException;
 import android.platform.test.annotations.Presubmit;
 
 import androidx.test.filters.SmallTest;
@@ -227,6 +228,21 @@ public class ApexManagerTest {
                 () -> mApexManager.submitStagedSession(testParamsWithChildren()));
     }
 
+    @Test
+    public void testGetStagedApexInfos_throwRunTimeException() throws RemoteException {
+        doThrow(RemoteException.class).when(mApexService).getStagedApexInfos(any());
+
+        assertThrows(RuntimeException.class,
+                () -> mApexManager.getStagedApexInfos(testParamsWithChildren()));
+    }
+
+    @Test
+    public void testGetStagedApexInfos_returnsEmptyArrayOnError() throws RemoteException {
+        doThrow(ServiceSpecificException.class).when(mApexService).getStagedApexInfos(any());
+
+        assertThat(mApexManager.getStagedApexInfos(testParamsWithChildren())).hasLength(0);
+    }
+
     @Test
     public void testMarkStagedSessionReady_throwPackageManagerException() throws RemoteException {
         doAnswer(invocation -> {