zentol commented on a change in pull request #6735: [FLINK-9126] New CassandraPojoInputFormat to output data as a custom annotated Cassandra Pojo URL: https://github.com/apache/flink/pull/6735#discussion_r221574858
########## File path: flink-connectors/flink-connector-cassandra/src/main/java/org/apache/flink/batch/connectors/cassandra/CassandraInputFormatBase.java ########## @@ -0,0 +1,102 @@ +/* + * 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.flink.batch.connectors.cassandra; + +import org.apache.flink.api.common.io.DefaultInputSplitAssigner; +import org.apache.flink.api.common.io.NonParallelInput; +import org.apache.flink.api.common.io.RichInputFormat; +import org.apache.flink.api.common.io.statistics.BaseStatistics; +import org.apache.flink.configuration.Configuration; +import org.apache.flink.core.io.GenericInputSplit; +import org.apache.flink.core.io.InputSplit; +import org.apache.flink.core.io.InputSplitAssigner; +import org.apache.flink.streaming.connectors.cassandra.ClusterBuilder; +import org.apache.flink.util.Preconditions; + +import org.apache.flink.shaded.guava18.com.google.common.base.Strings; + +import com.datastax.driver.core.Cluster; +import com.datastax.driver.core.Session; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +/** + * Base class for {@link RichInputFormat} read data from Apache Cassandra and generate a custom Cassandra annotated object. + * @param <OUT> type of inputClass + */ +abstract class CassandraInputFormatBase<OUT> extends RichInputFormat<OUT, InputSplit> implements NonParallelInput { + private static final Logger LOG = LoggerFactory.getLogger(CassandraInputFormatBase.class); Review comment: Let's make this non-static and initialize the logger with `LoggerFactory.getLogger(getClass())`; then sub-classes don't need to create their own logger, we can have a single source for logging messages, and the class is the actually user-facing one (which is what one would expect). ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services
