DariuszAniszewski commented on a change in pull request #11360: [WIP][BEAM-9722] added SnowflakeIO with Read operation URL: https://github.com/apache/beam/pull/11360#discussion_r406786410
########## File path: sdks/java/io/snowflake/src/main/java/org/apache/beam/sdk/io/snowflake/SnowflakeIO.java ########## @@ -0,0 +1,691 @@ +/* + * 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.beam.sdk.io.snowflake; + +import static org.apache.beam.sdk.io.TextIO.readFiles; +import static org.apache.beam.vendor.guava.v26_0_jre.com.google.common.base.Preconditions.checkArgument; + +import com.google.auto.value.AutoValue; +import com.opencsv.CSVParser; +import com.opencsv.CSVParserBuilder; +import java.io.IOException; +import java.io.Serializable; +import java.security.PrivateKey; +import java.sql.Connection; +import java.sql.SQLException; +import java.text.SimpleDateFormat; +import java.util.Date; +import java.util.UUID; +import java.util.concurrent.ConcurrentHashMap; +import javax.annotation.Nullable; +import javax.sql.DataSource; +import net.snowflake.client.jdbc.SnowflakeBasicDataSource; +import org.apache.beam.sdk.coders.Coder; +import org.apache.beam.sdk.io.FileIO; +import org.apache.beam.sdk.io.snowflake.credentials.KeyPairSnowflakeCredentials; +import org.apache.beam.sdk.io.snowflake.credentials.OAuthTokenSnowflakeCredentials; +import org.apache.beam.sdk.io.snowflake.credentials.SnowflakeCredentials; +import org.apache.beam.sdk.io.snowflake.credentials.UsernamePasswordSnowflakeCredentials; +import org.apache.beam.sdk.options.ValueProvider; +import org.apache.beam.sdk.transforms.Create; +import org.apache.beam.sdk.transforms.DoFn; +import org.apache.beam.sdk.transforms.PTransform; +import org.apache.beam.sdk.transforms.ParDo; +import org.apache.beam.sdk.transforms.SerializableFunction; +import org.apache.beam.sdk.transforms.Wait; +import org.apache.beam.sdk.transforms.display.DisplayData; +import org.apache.beam.sdk.transforms.display.HasDisplayData; +import org.apache.beam.sdk.values.PBegin; +import org.apache.beam.sdk.values.PCollection; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +/** + * IO to read and write data on Snowflake. + * + * <p>SnowflakeIO uses <a href="https://docs.snowflake.net/manuals/user-guide/jdbc.html";>Snowflake + * JDBC</a> driver under the hood, but data isn't read/written using JDBC directly. Instead, + * SnowflakeIO uses dedicated <b>COPY</b> operations to read/write data from/to Google Cloud + * Storage. + * + * <p>To configure SnowflakeIO to read/write from your Snowflake instance, you have to provide a + * {@link DataSourceConfiguration} using {@link + * DataSourceConfiguration#create(SnowflakeCredentials)}, where {@link SnowflakeCredentials might be + * created using {@link org.apache.beam.sdk.io.snowflake.credentials.SnowflakeCredentialsFactory}}. + * Additionally one of {@link DataSourceConfiguration#withServerName(String)} or {@link + * DataSourceConfiguration#withUrl(String)} must be used to tell SnowflakeIO which instance to use. + * <br> + * There are also other options available to configure connection to Snowflake: + * + * <ul> + * <li>{@link DataSourceConfiguration#withWarehouse(String)} to specify which Warehouse to use + * <li>{@link DataSourceConfiguration#withDatabase(String)} to specify which Database to connect + * to + * <li>{@link DataSourceConfiguration#withSchema(String)} to specify which schema to use + * <li>{@link DataSourceConfiguration#withRole(String)} to specify which role to use + * <li>{@link DataSourceConfiguration#withPortNumber(int)} to specify custom port of Snowflake + * instance + * </ul> + * + * <p>For example: + * + * <pre>{@code + * SnowflakeIO.DataSourceConfiguration dataSourceConfiguration = + * SnowflakeIO.DataSourceConfiguration.create(SnowflakeCredentialsFactory.of(options)) + * .withServerName(options.getServerName()) + * .withWarehouse(options.getWarehouse()) + * .withDatabase(options.getDatabase()) + * .withSchema(options.getSchema); Review comment: thanks! ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] With regards, Apache Git Services
