Do not let ShardBulkInferenceActionFilter unwrap / rewrap ESExceptions (elastic#123890)

* do not let ShardBulkInferenceActionFilter unwrap / rewrap ESExceptions

Author: tteofili

docs/changelog/123890.yaml

@@ -0,0 +1,5 @@
+pr: 123890
+summary: Do not let `ShardBulkInferenceActionFilter` unwrap / rewrap ESExceptions
+area: Search
+type: bug
+issues: []

x-pack/plugin/inference/src/main/java/org/elasticsearch/xpack/inference/InferenceException.java

@@ -0,0 +1,18 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0; you may not use this file except in compliance with the Elastic License
+ * 2.0.
+ */
+
+package org.elasticsearch.xpack.inference;
+
+import org.elasticsearch.ElasticsearchException;
+import org.elasticsearch.ElasticsearchWrapperException;
+
+public class InferenceException extends ElasticsearchException implements ElasticsearchWrapperException {
+    public InferenceException(String message, Throwable cause, Object... args) {
+        super(message, cause, args);
+    }
+
+}

x-pack/plugin/inference/src/main/java/org/elasticsearch/xpack/inference/action/filter/ShardBulkInferenceActionFilter.java

@@ -7,7 +7,6 @@
 
 package org.elasticsearch.xpack.inference.action.filter;
 
-import org.elasticsearch.ElasticsearchException;
 import org.elasticsearch.ElasticsearchStatusException;
 import org.elasticsearch.ExceptionsHelper;
 import org.elasticsearch.ResourceNotFoundException;
@@ -45,6 +44,7 @@
 import org.elasticsearch.xcontent.XContent;
 import org.elasticsearch.xpack.core.XPackField;
 import org.elasticsearch.xpack.core.inference.results.ChunkedInferenceError;
+import org.elasticsearch.xpack.inference.InferenceException;
 import org.elasticsearch.xpack.inference.mapper.SemanticTextField;
 import org.elasticsearch.xpack.inference.mapper.SemanticTextFieldMapper;
 import org.elasticsearch.xpack.inference.mapper.SemanticTextUtils;
@@ -288,7 +288,7 @@ public void onFailure(Exception exc) {
                                         request.field
                                     );
                                 } else {
-                                    failure = new ElasticsearchException(
+                                    failure = new InferenceException(
                                         "Error loading inference for inference id [{}] on field [{}]",
                                         exc,
                                         inferenceId,
@@ -317,7 +317,7 @@ public void onResponse(List<ChunkedInference> results) {
                             var acc = inferenceResults.get(request.index);
                             if (result instanceof ChunkedInferenceError error) {
                                 acc.addFailure(
-                                    new ElasticsearchException(
+                                    new InferenceException(
                                         "Exception when running inference id [{}] on field [{}]",
                                         error.exception(),
                                         inferenceProvider.model.getInferenceEntityId(),
@@ -349,7 +349,7 @@ public void onFailure(Exception exc) {
                         for (FieldInferenceRequest request : requests) {
                             addInferenceResponseFailure(
                                 request.index,
-                                new ElasticsearchException(
+                                new InferenceException(
                                     "Exception when running inference id [{}] on field [{}]",
                                     exc,
                                     inferenceProvider.model.getInferenceEntityId(),

x-pack/plugin/inference/src/test/java/org/elasticsearch/xpack/inference/action/filter/ShardBulkInferenceActionFilterTests.java

@@ -248,7 +248,9 @@ public void testItemFailures() throws Exception {
                 assertNotNull(bulkShardRequest.items()[0].getPrimaryResponse());
                 assertTrue(bulkShardRequest.items()[0].getPrimaryResponse().isFailed());
                 BulkItemResponse.Failure failure = bulkShardRequest.items()[0].getPrimaryResponse().getFailure();
+                assertThat(failure.getCause().getMessage(), containsString("Exception when running inference"));
                 assertThat(failure.getCause().getCause().getMessage(), containsString("boom"));
+                assertThat(failure.getStatus(), is(RestStatus.BAD_REQUEST));
 
                 // item 1 is a success
                 assertNull(bulkShardRequest.items()[1].getPrimaryResponse());
@@ -267,7 +269,9 @@ public void testItemFailures() throws Exception {
                 assertNotNull(bulkShardRequest.items()[2].getPrimaryResponse());
                 assertTrue(bulkShardRequest.items()[2].getPrimaryResponse().isFailed());
                 failure = bulkShardRequest.items()[2].getPrimaryResponse().getFailure();
+                assertThat(failure.getCause().getMessage(), containsString("Exception when running inference"));
                 assertThat(failure.getCause().getCause().getMessage(), containsString("boom"));
+                assertThat(failure.getStatus(), is(RestStatus.BAD_REQUEST));
             } finally {
                 chainExecuted.countDown();
             }