nastra commented on code in PR #15082: URL: https://github.com/apache/iceberg/pull/15082#discussion_r2705124734
########## core/src/test/java/org/apache/iceberg/rest/TestFreshnessAwareLoading.java: ########## @@ -0,0 +1,797 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF 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. + */ +package org.apache.iceberg.rest; + +import static org.apache.iceberg.TestBase.FILE_A; +import static org.apache.iceberg.TestBase.SCHEMA; +import static org.apache.iceberg.rest.RESTRequestMatcher.match; +import static org.assertj.core.api.Assertions.assertThat; +import static org.assertj.core.api.Assertions.assertThatThrownBy; +import static org.mockito.ArgumentMatchers.any; +import static org.mockito.ArgumentMatchers.eq; +import static org.mockito.Mockito.times; +import static org.mockito.Mockito.verify; + +import com.github.benmanes.caffeine.cache.Cache; +import java.time.Duration; +import java.util.Map; +import java.util.Set; +import java.util.function.BiFunction; +import java.util.function.Consumer; +import java.util.function.Function; +import java.util.function.Supplier; +import org.apache.http.HttpHeaders; +import org.apache.iceberg.BaseMetadataTable; +import org.apache.iceberg.BaseTable; +import org.apache.iceberg.CatalogProperties; +import org.apache.iceberg.Table; +import org.apache.iceberg.TableMetadata; +import org.apache.iceberg.catalog.SessionCatalog; +import org.apache.iceberg.catalog.TableIdentifier; +import org.apache.iceberg.exceptions.NoSuchTableException; +import org.apache.iceberg.exceptions.RESTException; +import org.apache.iceberg.io.FileIO; +import org.apache.iceberg.relocated.com.google.common.collect.ImmutableList; +import org.apache.iceberg.relocated.com.google.common.collect.ImmutableMap; +import org.apache.iceberg.relocated.com.google.common.collect.Maps; +import org.apache.iceberg.rest.responses.ConfigResponse; +import org.apache.iceberg.rest.responses.ErrorResponse; +import org.apache.iceberg.rest.responses.LoadTableResponse; +import org.apache.iceberg.types.Types; +import org.apache.iceberg.util.FakeTicker; +import org.junit.jupiter.api.Test; +import org.junit.jupiter.params.ParameterizedTest; +import org.junit.jupiter.params.provider.ValueSource; +import org.mockito.Mockito; +import org.mockito.stubbing.Answer; + +public class TestFreshnessAwareLoading extends TestBaseWithRESTServer { + private static final ResourcePaths RESOURCE_PATHS = + ResourcePaths.forCatalogProperties( + ImmutableMap.of( + RESTCatalogProperties.NAMESPACE_SEPARATOR, + RESTCatalogAdapter.NAMESPACE_SEPARATOR_URLENCODED_UTF_8)); + private static final TableIdentifier TABLE = TableIdentifier.of(NS, "newtable"); + private static final Duration TABLE_EXPIRATION = + Duration.ofMillis(RESTCatalogProperties.TABLE_CACHE_EXPIRE_AFTER_WRITE_MS_DEFAULT); + private static final Duration HALF_OF_TABLE_EXPIRATION = TABLE_EXPIRATION.dividedBy(2); + + @Override + protected String catalogName() { + return "catalog-freshness-aware-loading"; + } + + @Test + public void eTagWithCreateAndLoadTable() { + Map<String, String> respHeaders = Maps.newHashMap(); + RESTCatalog catalog = catalogWithResponseHeaders(respHeaders); + + catalog.createNamespace(TABLE.namespace()); + catalog.createTable(TABLE, SCHEMA); + + assertThat(respHeaders).containsKey(HttpHeaders.ETAG); + String eTag = respHeaders.get(HttpHeaders.ETAG); + respHeaders.clear(); + + catalog.loadTable(TABLE); + + assertThat(respHeaders).containsEntry(HttpHeaders.ETAG, eTag); + } + + @Test + public void eTagWithDifferentTables() { + Map<String, String> respHeaders = Maps.newHashMap(); + RESTCatalog catalog = catalogWithResponseHeaders(respHeaders); + + catalog.createNamespace(TABLE.namespace()); + catalog.createTable(TABLE, SCHEMA); + + assertThat(respHeaders).containsKey(HttpHeaders.ETAG); + String eTagTbl1 = respHeaders.get(HttpHeaders.ETAG); + respHeaders.clear(); + + catalog.createTable(TableIdentifier.of(TABLE.namespace(), "table2"), SCHEMA); + + assertThat(respHeaders).containsKey(HttpHeaders.ETAG); + assertThat(eTagTbl1).isNotEqualTo(respHeaders.get(HttpHeaders.ETAG)); + } + + @Test + public void eTagAfterDataUpdate() { + Map<String, String> respHeaders = Maps.newHashMap(); + RESTCatalog catalog = catalogWithResponseHeaders(respHeaders); + + catalog.createNamespace(TABLE.namespace()); + Table tbl = catalog.createTable(TABLE, SCHEMA); + + assertThat(respHeaders).containsKey(HttpHeaders.ETAG); + String eTag = respHeaders.get(HttpHeaders.ETAG); + + respHeaders.clear(); + tbl.newAppend().appendFile(FILE_A).commit(); + + assertThat(respHeaders).containsKey(HttpHeaders.ETAG); + assertThat(eTag).isNotEqualTo(respHeaders.get(HttpHeaders.ETAG)); + } + + @Test + public void eTagAfterMetadataOnlyUpdate() { + Map<String, String> respHeaders = Maps.newHashMap(); + RESTCatalog catalog = catalogWithResponseHeaders(respHeaders); + + catalog.createNamespace(TABLE.namespace()); + Table tbl = catalog.createTable(TABLE, SCHEMA); + + assertThat(respHeaders).containsKey(HttpHeaders.ETAG); + String eTag = respHeaders.get(HttpHeaders.ETAG); + + respHeaders.clear(); + tbl.updateSchema().addColumn("extra", Types.IntegerType.get()).commit(); + + assertThat(respHeaders).containsKey(HttpHeaders.ETAG); + assertThat(eTag).isNotEqualTo(respHeaders.get(HttpHeaders.ETAG)); + } + + @Test + public void eTagWithRegisterTable() { + Map<String, String> respHeaders = Maps.newHashMap(); + RESTCatalog catalog = catalogWithResponseHeaders(respHeaders); + + catalog.createNamespace(TABLE.namespace()); + Table tbl = catalog.createTable(TABLE, SCHEMA); + + assertThat(respHeaders).containsKey(HttpHeaders.ETAG); + String eTag = respHeaders.get(HttpHeaders.ETAG); + + respHeaders.clear(); + catalog.registerTable( + TableIdentifier.of(TABLE.namespace(), "other_table"), + ((BaseTable) tbl).operations().current().metadataFileLocation()); + + assertThat(respHeaders).containsEntry(HttpHeaders.ETAG, eTag); + } + + @Test + public void notModifiedResponse() { + restCatalog.createNamespace(TABLE.namespace()); + restCatalog.createTable(TABLE, SCHEMA); + Table table = restCatalog.loadTable(TABLE); + + String eTag = + ETagProvider.of(((BaseTable) table).operations().current().metadataFileLocation()); + + Mockito.doAnswer( + invocation -> { + HTTPRequest originalRequest = invocation.getArgument(0); + + assertThat(originalRequest.headers().contains(HttpHeaders.IF_NONE_MATCH)); + assertThat( + originalRequest.headers().firstEntry(HttpHeaders.IF_NONE_MATCH).get().value()) + .isEqualTo(eTag); + + assertThat( + adapterForRESTServer.execute( + originalRequest, + LoadTableResponse.class, + invocation.getArgument(2), + invocation.getArgument(3), + ParserContext.builder().build())) + .isNull(); + + return null; + }) + .when(adapterForRESTServer) + .execute( + match(HTTPRequest.HTTPMethod.GET, RESOURCE_PATHS.table(TABLE)), + eq(LoadTableResponse.class), + any(), + any()); + + assertThat(restCatalog.loadTable(TABLE)).isNotNull(); + + TableIdentifier metadataTableIdentifier = + TableIdentifier.of(NS.toString(), TABLE.name(), "partitions"); + + assertThat(restCatalog.loadTable(metadataTableIdentifier)).isNotNull(); + + Mockito.verify(adapterForRESTServer, times(3)) + .execute( + match(HTTPRequest.HTTPMethod.GET, RESOURCE_PATHS.table(TABLE)), + eq(LoadTableResponse.class), + any(), + any()); + + verify(adapterForRESTServer) + .execute( + match(HTTPRequest.HTTPMethod.GET, RESOURCE_PATHS.table(metadataTableIdentifier)), + any(), + any(), + any()); + } + + @Test + public void freshnessAwareLoading() { + restCatalog.createNamespace(TABLE.namespace()); + restCatalog.createTable(TABLE, SCHEMA); + + Cache<RESTTableCache.SessionIdTableId, RESTTableCache.TableWithETag> tableCache = + restCatalog.sessionCatalog().tableCache().cache(); + assertThat(tableCache.estimatedSize()).isZero(); + + expectFullTableLoadForLoadTable(TABLE, adapterForRESTServer); + BaseTable tableAfterFirstLoad = (BaseTable) restCatalog.loadTable(TABLE); + + assertThat(tableCache.stats().hitCount()).isZero(); + assertThat(tableCache.asMap()) + .containsOnlyKeys( + RESTTableCache.SessionIdTableId.of(DEFAULT_SESSION_CONTEXT.sessionId(), TABLE)); + + expectNotModifiedResponseForLoadTable(TABLE, adapterForRESTServer); + BaseTable tableAfterSecondLoad = (BaseTable) restCatalog.loadTable(TABLE); + + assertThat(tableAfterFirstLoad).isNotEqualTo(tableAfterSecondLoad); + assertThat(tableAfterFirstLoad.operations().current().location()) + .isEqualTo(tableAfterSecondLoad.operations().current().location()); + assertThat( + tableCache + .asMap() + .get(RESTTableCache.SessionIdTableId.of(DEFAULT_SESSION_CONTEXT.sessionId(), TABLE)) + .supplier() + .get() + .operations() + .current() + .metadataFileLocation()) + .isEqualTo(tableAfterFirstLoad.operations().current().metadataFileLocation()); + + Mockito.verify(adapterForRESTServer, times(2)) + .execute( + match(HTTPRequest.HTTPMethod.GET, RESOURCE_PATHS.table(TABLE)), any(), any(), any()); + } + + @Test + public void freshnessAwareLoadingMetadataTables() { + restCatalog.createNamespace(TABLE.namespace()); + restCatalog.createTable(TABLE, SCHEMA); + + Cache<RESTTableCache.SessionIdTableId, RESTTableCache.TableWithETag> tableCache = + restCatalog.sessionCatalog().tableCache().cache(); + assertThat(tableCache.estimatedSize()).isZero(); + + BaseTable table = (BaseTable) restCatalog.loadTable(TABLE); + + assertThat(tableCache.stats().hitCount()).isZero(); + assertThat(tableCache.asMap()) + .containsOnlyKeys( + RESTTableCache.SessionIdTableId.of(DEFAULT_SESSION_CONTEXT.sessionId(), TABLE)); + + TableIdentifier metadataTableIdentifier = + TableIdentifier.of(TABLE.namespace().toString(), TABLE.name(), "partitions"); + + BaseMetadataTable metadataTable = + (BaseMetadataTable) restCatalog.loadTable(metadataTableIdentifier); + + assertThat(tableCache.stats().hitCount()).isEqualTo(1); + assertThat(tableCache.asMap()) + .containsOnlyKeys( + RESTTableCache.SessionIdTableId.of(DEFAULT_SESSION_CONTEXT.sessionId(), TABLE)); + + assertThat(table).isNotEqualTo(metadataTable.table()); Review Comment: but in that case you'd probably want to use `isNotSameAs(..)` to be more explicit here -- This is an automated message from the Apache Git Service. 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