rdblue commented on code in PR #9466: URL: https://github.com/apache/iceberg/pull/9466#discussion_r1474907692
########## kafka-connect/kafka-connect/src/main/java/org/apache/iceberg/connect/data/Utilities.java: ########## @@ -0,0 +1,247 @@ +/* + * 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.connect.data; + +import static java.util.stream.Collectors.toSet; +import static org.apache.iceberg.TableProperties.DEFAULT_FILE_FORMAT; +import static org.apache.iceberg.TableProperties.DEFAULT_FILE_FORMAT_DEFAULT; +import static org.apache.iceberg.TableProperties.WRITE_TARGET_FILE_SIZE_BYTES; +import static org.apache.iceberg.TableProperties.WRITE_TARGET_FILE_SIZE_BYTES_DEFAULT; + +import java.io.IOException; +import java.net.URL; +import java.nio.file.Files; +import java.nio.file.Path; +import java.nio.file.Paths; +import java.util.List; +import java.util.Map; +import java.util.Set; +import java.util.UUID; +import org.apache.iceberg.CatalogUtil; +import org.apache.iceberg.FileFormat; +import org.apache.iceberg.Table; +import org.apache.iceberg.catalog.Catalog; +import org.apache.iceberg.common.DynClasses; +import org.apache.iceberg.common.DynConstructors; +import org.apache.iceberg.common.DynMethods; +import org.apache.iceberg.common.DynMethods.BoundMethod; +import org.apache.iceberg.connect.IcebergSinkConfig; +import org.apache.iceberg.data.GenericAppenderFactory; +import org.apache.iceberg.data.Record; +import org.apache.iceberg.io.FileAppenderFactory; +import org.apache.iceberg.io.OutputFileFactory; +import org.apache.iceberg.io.TaskWriter; +import org.apache.iceberg.io.UnpartitionedWriter; +import org.apache.iceberg.relocated.com.google.common.base.Preconditions; +import org.apache.iceberg.relocated.com.google.common.base.Splitter; +import org.apache.iceberg.relocated.com.google.common.collect.ImmutableList; +import org.apache.iceberg.relocated.com.google.common.collect.Maps; +import org.apache.iceberg.relocated.com.google.common.collect.Sets; +import org.apache.iceberg.relocated.com.google.common.primitives.Ints; +import org.apache.iceberg.types.TypeUtil; +import org.apache.iceberg.types.Types.NestedField; +import org.apache.iceberg.util.PropertyUtil; +import org.apache.kafka.connect.data.Field; +import org.apache.kafka.connect.data.Struct; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +public class Utilities { + + private static final Logger LOG = LoggerFactory.getLogger(Utilities.class.getName()); + private static final List<String> HADOOP_CONF_FILES = + ImmutableList.of("core-site.xml", "hdfs-site.xml", "hive-site.xml"); + + public static Catalog loadCatalog(IcebergSinkConfig config) { + return CatalogUtil.buildIcebergCatalog( + config.catalogName(), config.catalogProps(), loadHadoopConfig(config)); + } + + // use reflection here to avoid requiring Hadoop as a dependency + private static Object loadHadoopConfig(IcebergSinkConfig config) { + Class<?> configClass = + DynClasses.builder() + .impl("org.apache.hadoop.hdfs.HdfsConfiguration") + .impl("org.apache.hadoop.conf.Configuration") + .orNull() + .build(); + + if (configClass == null) { + LOG.info("Hadoop not found on classpath, not creating Hadoop config"); + return null; + } + + try { + Object result = DynConstructors.builder().hiddenImpl(configClass).build().newInstance(); + BoundMethod addResourceMethod = + DynMethods.builder("addResource").impl(configClass, URL.class).build(result); + BoundMethod setMethod = + DynMethods.builder("set").impl(configClass, String.class, String.class).build(result); + + // load any config files in the specified config directory + String hadoopConfDir = config.hadoopConfDir(); + if (hadoopConfDir != null) { + HADOOP_CONF_FILES.forEach( + confFile -> { + Path path = Paths.get(hadoopConfDir, confFile); + if (Files.exists(path)) { + try { + addResourceMethod.invoke(path.toUri().toURL()); + } catch (IOException e) { + LOG.warn("Error adding Hadoop resource {}, resource was not added", path, e); + } + } + }); + } + + // set any Hadoop properties specified in the sink config + config.hadoopProps().forEach(setMethod::invoke); + + LOG.info("Hadoop config initialized: {}", configClass.getName()); + return result; + } catch (Exception e) { + LOG.warn( + "Hadoop found on classpath but could not create config, proceeding without config", e); + } + return null; + } + + public static Object extractFromRecordValue(Object recordValue, String fieldName) { + List<String> fields = Splitter.on('.').splitToList(fieldName); + if (recordValue instanceof Struct) { + return valueFromStruct((Struct) recordValue, fields); + } else if (recordValue instanceof Map) { + return valueFromMap((Map<?, ?>) recordValue, fields); + } else { + throw new UnsupportedOperationException( + "Cannot extract value from type: " + recordValue.getClass().getName()); + } + } + + private static Object valueFromStruct(Struct parent, List<String> fields) { + Struct struct = parent; + for (int idx = 0; idx < fields.size() - 1; idx++) { + Object value = fieldValueFromStruct(struct, fields.get(idx)); + if (value == null) { + return null; + } + Preconditions.checkState(value instanceof Struct, "Expected a struct type"); + struct = (Struct) value; + } + return fieldValueFromStruct(struct, fields.get(fields.size() - 1)); + } + + private static Object fieldValueFromStruct(Struct struct, String fieldName) { + Field structField = struct.schema().field(fieldName); + if (structField == null) { + return null; + } + return struct.get(structField); + } + + private static Object valueFromMap(Map<?, ?> parent, List<String> fields) { + Map<?, ?> map = parent; + for (int idx = 0; idx < fields.size() - 1; idx++) { + Object value = map.get(fields.get(idx)); + if (value == null) { + return null; + } + Preconditions.checkState(value instanceof Map, "Expected a map type"); + map = (Map<?, ?>) value; + } + return map.get(fields.get(fields.size() - 1)); + } + + public static TaskWriter<Record> createTableWriter( + Table table, String tableName, IcebergSinkConfig config) { + Map<String, String> tableProps = Maps.newHashMap(table.properties()); + tableProps.putAll(config.writeProps()); + + String formatStr = tableProps.getOrDefault(DEFAULT_FILE_FORMAT, DEFAULT_FILE_FORMAT_DEFAULT); + FileFormat format = FileFormat.valueOf(formatStr.toUpperCase()); Review Comment: There's also `FileFormat.fromString` that handles `toUppserCase`. -- This is an automated message from the Apache Git Service. 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