Add method to extract all errors of a partial failure status at once

google-ads-stubs-lib/src/main/java/com/google/ads/googleads/lib/utils/AbstractErrorUtils.java

@@ -30,6 +30,68 @@ public abstract class AbstractErrorUtils<
     GoogleAdsErrorT extends Message,
     FieldPathElementT extends Message> {
 
+  /**
+   * Gets a list of all partial failure error messages for a given response.
+   *
+   * <p>For example, given the following Failure:
+   *
+   * <pre>
+   *   <code>
+   *     errors {
+   *       message: "Too low."
+   *       location {
+   *         field_path_elements {
+   *           field_name: "operations"
+   *           index {
+   *             value: 1
+   *           }
+   *         }
+   *         field_path_elements {
+   *           field_name: "create"
+   *         }
+   *         field_path_elements {
+   *           field_name: "campaign"
+   *         }
+   *       }
+   *     }
+   *     errors {
+   *       message: "Too low."
+   *       location {
+   *         field_path_elements {
+   *           field_name: "operations"
+   *           index {
+   *             value: 2
+   *           }
+   *         }
+   *         field_path_elements {
+   *           field_name: "create"
+   *         }
+   *         field_path_elements {
+   *           field_name: "campaign"
+   *         }
+   *       }
+   *     }
+   *   </code>
+   * </pre>
+   *
+   * Two {@link GoogleAdsErrorT} instances would be returned for operation index 1 and 2.
+   *
+   * @param partialFailureStatus a partialFailure status, with the detail list containing {@link
+   *     GoogleAdsFailureT} instances.
+   * @return a list containing all the {@link GoogleAdsErrorT} instances.
+   * @throws InvalidProtocolBufferException if not able to unpack the protocol buffer. This is most
+   *     likely due to using the wrong version of ErrorUtils being used with the API response.
+   */
+  public List<GoogleAdsErrorT> getGoogleAdsErrors(Status partialFailureStatus)
+      throws InvalidProtocolBufferException {
+    List<GoogleAdsErrorT> result = new ArrayList();
+    for (Any detail : partialFailureStatus.getDetailsList()) {
+      GoogleAdsFailureT failure = getGoogleAdsFailure(detail);
+      result.addAll(getGoogleAdsErrors(failure));
+    }
+    return result;
+  }
+
   /**
    * Gets a list of all partial failure error messages for a given response. Operations are indexed
    * from 0.

google-ads/src/test/java/com/google/ads/googleads/lib/utils/AbstractErrorUtilsTest.java

@@ -15,6 +15,7 @@
 package com.google.ads.googleads.lib.utils;
 
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.fail;
 
 import com.google.ads.googleads.lib.test.errors.Int64Value;
 import com.google.ads.googleads.lib.test.errors.MockError;
@@ -44,6 +45,36 @@ public static String[] parameters() {
     return new String[] {"operations", "mutate_operations"};
   }
 
+  @Test
+  public void getGoogleAdsErrors_includesAll() throws InvalidProtocolBufferException {
+    MockPath pathIndex =
+            MockPath.newBuilder()
+                    .setIndex(Int64Value.newBuilder().setValue(0))
+                    .setFieldName(operationsFieldName)
+                    .build();
+    MockError errorIndex = MockError.newBuilder().addLocation(pathIndex).build();
+    MockFailure failureIndex = MockFailure.newBuilder().addErrors(errorIndex).build();
+
+    MockPath pathNoIndex = MockPath.newBuilder().setFieldName(operationsFieldName).build();
+    MockError errorNoIndex = MockError.newBuilder().addLocation(pathNoIndex).build();
+    MockFailure failureNoIndex = MockFailure.newBuilder().addErrors(errorNoIndex).build();
+
+    MockPath pathNoOperation = MockPath.newBuilder().setFieldName("someotherfield").build();
+    MockError errorNoOperation = MockError.newBuilder().addLocation(pathNoOperation).build();
+    MockFailure failureNoOperation = MockFailure.newBuilder().addErrors(errorNoOperation).build();
+
+    Status status = Status.newBuilder()
+            .addDetails(Any.pack(failureIndex))
+            .addDetails(Any.pack(failureNoIndex))
+            .addDetails(Any.pack(failureNoOperation))
+            .build();
+    List<MockError> result = impl.getGoogleAdsErrors(status);
+    assertEquals(3, result.size());
+    assertEquals(errorIndex, result.get(0));
+    assertEquals(errorNoIndex, result.get(1));
+    assertEquals(errorNoOperation, result.get(2));
+  }
+
   @Test
   public void getGoogleAdsErrors_includesWhen_operationSet() throws InvalidProtocolBufferException {
     MockPath path =