nastra commented on code in PR #12808: URL: https://github.com/apache/iceberg/pull/12808#discussion_r2055588983
########## bigquery/src/main/java/org/apache/iceberg/gcp/bigquery/BigQueryMetastoreCatalog.java: ########## @@ -0,0 +1,400 @@ +/* + * 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.gcp.bigquery; + +import com.google.api.services.bigquery.model.Dataset; +import com.google.api.services.bigquery.model.DatasetList.Datasets; +import com.google.api.services.bigquery.model.DatasetReference; +import com.google.api.services.bigquery.model.ExternalCatalogDatasetOptions; +import com.google.api.services.bigquery.model.TableReference; +import com.google.cloud.ServiceOptions; +import com.google.cloud.bigquery.BigQueryOptions; +import java.io.IOException; +import java.security.GeneralSecurityException; +import java.util.List; +import java.util.Locale; +import java.util.Map; +import java.util.Objects; +import java.util.Set; +import org.apache.hadoop.conf.Configurable; +import org.apache.hadoop.conf.Configuration; +import org.apache.iceberg.BaseMetastoreCatalog; +import org.apache.iceberg.CatalogProperties; +import org.apache.iceberg.CatalogUtil; +import org.apache.iceberg.TableMetadata; +import org.apache.iceberg.TableOperations; +import org.apache.iceberg.catalog.Namespace; +import org.apache.iceberg.catalog.SupportsNamespaces; +import org.apache.iceberg.catalog.TableIdentifier; +import org.apache.iceberg.exceptions.AlreadyExistsException; +import org.apache.iceberg.exceptions.NoSuchNamespaceException; +import org.apache.iceberg.exceptions.NoSuchTableException; +import org.apache.iceberg.exceptions.ServiceFailureException; +import org.apache.iceberg.exceptions.ValidationException; +import org.apache.iceberg.io.FileIO; +import org.apache.iceberg.relocated.com.google.common.annotations.VisibleForTesting; +import org.apache.iceberg.relocated.com.google.common.base.Preconditions; +import org.apache.iceberg.relocated.com.google.common.base.Strings; +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.util.LocationUtil; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +/** Iceberg Bigquery Metastore Catalog implementation. */ +public final class BigQueryMetastoreCatalog extends BaseMetastoreCatalog + implements SupportsNamespaces, Configurable { + + // User provided properties. + public static final String PROJECT_ID = "gcp-project"; + public static final String GCP_LOCATION = "gcp-location"; + public static final String FILTER_UNSUPPORTED_TABLES = "filter-unsupported-tables"; + public static final String TESTING_ENABLED = "testing-enabled"; + + public static final String HIVE_METASTORE_WAREHOUSE_DIR = "hive.metastore.warehouse.dir"; + + private static final Logger LOG = LoggerFactory.getLogger(BigQueryMetastoreCatalog.class); + + private static final String DEFAULT_GCP_LOCATION = "us"; + + private String catalogName; + private Map<String, String> catalogProperties; + private FileIO fileIO; + private Configuration conf; + private String projectId; + private String location; + private BigQueryMetastoreClient client; + private boolean filterUnsupportedTables; + + // Must have a no-arg constructor to be dynamically loaded + // initialize(String name, Map<String, String> properties) will be called to complete + // initialization + public BigQueryMetastoreCatalog() {} + + @Override + public void initialize(String inputName, Map<String, String> properties) { + Preconditions.checkArgument( + properties.containsKey(PROJECT_ID), "GCP project must be specified"); + + projectId = properties.get(PROJECT_ID); + location = properties.getOrDefault(GCP_LOCATION, DEFAULT_GCP_LOCATION); + boolean testingEnabled = + Boolean.parseBoolean(properties.getOrDefault(TESTING_ENABLED, "false")); + + BigQueryOptions options = + BigQueryOptions.newBuilder() + .setProjectId(projectId) + .setLocation(location) + .setRetrySettings(ServiceOptions.getDefaultRetrySettings()) + .build(); + + try { + if (testingEnabled) { + client = new FakeBigQueryMetastoreClient(options); + + } else { + client = new BigQueryMetastoreClientImpl(options); + } + } catch (IOException e) { + throw new ServiceFailureException(e, "Creating BigQuery client failed"); + } catch (GeneralSecurityException e) { + throw new ValidationException(e, "Creating BigQuery client failed due to a security issue"); + } + initialize(inputName, properties, projectId, location, client); + } + + @VisibleForTesting + void initialize( + String inputName, + Map<String, String> properties, + String initialProjectId, + String initialLocation, + BigQueryMetastoreClient bigQueryMetaStoreClient) { + Preconditions.checkArgument(bigQueryMetaStoreClient != null, "BigQuery client can not be null"); + this.catalogName = inputName; + this.catalogProperties = ImmutableMap.copyOf(properties); + this.projectId = initialProjectId; + this.location = initialLocation; + this.client = bigQueryMetaStoreClient; + + if (this.conf == null) { + LOG.warn("No configuration was set, using the default environment Configuration"); + this.conf = new Configuration(); + } + + LOG.info("Using BigQuery Metastore Iceberg Catalog: {}", inputName); + + if (properties.containsKey(CatalogProperties.WAREHOUSE_LOCATION)) { + // Iceberg always removes trailing slash to avoid paths like "<folder>//data" in file systems + // like s3. + this.conf.set( + HIVE_METASTORE_WAREHOUSE_DIR, + LocationUtil.stripTrailingSlash(properties.get(CatalogProperties.WAREHOUSE_LOCATION))); + } + + String fileIoImpl = + properties.getOrDefault( + CatalogProperties.FILE_IO_IMPL, "org.apache.iceberg.hadoop.HadoopFileIO"); + this.fileIO = CatalogUtil.loadFileIO(fileIoImpl, properties, conf); + + this.filterUnsupportedTables = + Boolean.parseBoolean(properties.getOrDefault(FILTER_UNSUPPORTED_TABLES, "false")); + } + + @Override + protected TableOperations newTableOps(TableIdentifier identifier) { + return new BigQueryTableOperations( + client, + fileIO, + projectId, + // Sometimes extensions have the namespace contain the table name too, so we are forced to + // allow invalid namespace and just take the first part here like other catalog + // implementations do. + identifier.namespace().level(0), + identifier.name(), + conf); + } + + @Override + protected String defaultWarehouseLocation(TableIdentifier identifier) { + String locationUri = null; + DatasetReference datasetReference = toDatasetReference(identifier.namespace()); + Dataset dataset = client.getDataset(datasetReference); + if (dataset != null && dataset.getExternalCatalogDatasetOptions() != null) { + locationUri = dataset.getExternalCatalogDatasetOptions().getDefaultStorageLocationUri(); + } + return String.format( Review Comment: nit: please add a newline after a closing }. 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