Create an index with invalid setting

Signed-off-by: Peter Nied <[email protected]>

server/src/internalClusterTest/java/org/opensearch/snapshots/RestoreSnapshotInvalidStateIT.java

@@ -0,0 +1,95 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * The OpenSearch Contributors require contributions made to
+ * this file be licensed under the Apache-2.0 license or a
+ * compatible open source license.
+ */
+
+/*
+ * Licensed to Elasticsearch under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+/*
+ * Modifications Copyright OpenSearch Contributors. See
+ * GitHub history for details.
+ */
+
+package org.opensearch.snapshots;
+
+import org.hamcrest.MatcherAssert;
+import org.opensearch.action.UnavailableShardsException;
+import org.opensearch.action.admin.cluster.snapshots.create.CreateSnapshotResponse;
+import org.opensearch.action.admin.cluster.snapshots.restore.RestoreSnapshotResponse;
+import org.opensearch.action.admin.indices.get.GetIndexResponse;
+import org.opensearch.common.settings.Settings;
+
+import java.util.Map;
+
+import static org.hamcrest.Matchers.*;
+import static org.opensearch.index.mapper.MapperService.INDEX_MAPPER_DYNAMIC_SETTING;
+import static org.opensearch.test.hamcrest.OpenSearchAssertions.assertAcked;
+
+public class RestoreSnapshotInvalidStateIT extends AbstractSnapshotIntegTestCase {
+    /**
+     * Reproduces https://github.com/opensearch-project/OpenSearch/issues/3879
+     */
+    public void testRestoreIndexWithInvalidSettings() throws Exception {
+        //noinspection deprecation
+        final String disallowedSetting = INDEX_MAPPER_DYNAMIC_SETTING.getKey();
+
+        final String repoName = "test-repo";
+        logger.info("--> creating repository: {}", repoName);
+        createRepository(repoName, "fs");
+
+        final String indexName = "test-idx";
+        logger.info("--> create index: {}", indexName);
+        assertAcked(prepareCreate(indexName, 2).setSettings(Map.of("number_of_shards", 1)));
+        ensureGreen();
+
+        final String snapshotName = "test-snap";
+        logger.info("--> creating snapshot: {} of indexes {}", snapshotName, indexName);
+        final CreateSnapshotResponse createSnapshotResponse = clusterAdmin().prepareCreateSnapshot(repoName, snapshotName)
+            .setWaitForCompletion(true)
+            .setIndices(indexName)
+            .get();
+
+        logger.info("--> delete index: {} ", indexName);
+        cluster().wipeIndices(indexName);
+
+        logger.info("--> restore snapshot {}, for indexes {} with invalid setting {}", snapshotName, indexName, disallowedSetting);
+        final RestoreSnapshotResponse restoreSnapshotResponse = clusterAdmin().prepareRestoreSnapshot(repoName, snapshotName)
+            .setWaitForCompletion(true)
+            .setIndexSettings(Settings.builder()
+                .put(disallowedSetting, true)
+                .build())
+            .execute()
+            .actionGet();
+
+        final RestoreInfo restoreInfo = restoreSnapshotResponse.getRestoreInfo();
+        logger.info("--> restore details {}", restoreInfo);
+        MatcherAssert.assertThat(restoreInfo.status().getStatus(), is(200));
+        MatcherAssert.assertThat(restoreInfo.indices(), contains(indexName));
+
+        final GetIndexResponse getIndexResponse = client().admin().indices().prepareGetIndex().addIndices(indexName).execute().actionGet();
+        MatcherAssert.assertThat(getIndexResponse.settings().get(indexName).keySet(), hasItem(disallowedSetting));
+        logger.info("--> index {}'s restored settings {}", indexName, getIndexResponse);
+
+        assertThrows(UnavailableShardsException.class, () -> client().prepareIndex().setIndex(indexName).setId("1").setSource(Map.of("hello", "world")).execute().actionGet());
+    }
+}