wuchong commented on a change in pull request #11466: [FLINK-15400][connectors / elasticsearch] elasticsearch table sink support dynamic index. URL: https://github.com/apache/flink/pull/11466#discussion_r410040879
########## File path: flink-connectors/flink-connector-elasticsearch-base/src/main/java/org/apache/flink/streaming/connectors/elasticsearch/index/IndexGeneratorFactory.java ########## @@ -0,0 +1,294 @@ +/* + * 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.streaming.connectors.elasticsearch.index; + +import org.apache.flink.annotation.Internal; +import org.apache.flink.api.common.typeinfo.TypeInformation; +import org.apache.flink.api.common.typeinfo.Types; +import org.apache.flink.table.api.TableException; +import org.apache.flink.table.api.TableSchema; +import org.apache.flink.table.types.DataType; +import org.apache.flink.table.types.utils.TypeConversions; +import org.apache.flink.types.Row; + +import java.sql.Date; +import java.sql.Time; +import java.sql.Timestamp; +import java.time.LocalDate; +import java.time.LocalDateTime; +import java.time.LocalTime; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Comparator; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import java.util.regex.Matcher; +import java.util.regex.Pattern; +import java.util.stream.Collectors; + +/** + * Factory of {@link IndexGenerator}. + * + * <p>Flink supports both static index and dynamic index. + * + * <p>If you want to have a static index, this option value should be a plain string, e.g. 'myusers', + * all the records will be consistently written into "myusers" index. + * + * <p>If you want to have a dynamic index, you can use '{field_name}' to reference a field value in the + * record to dynamically generate a target index. You can also use '{field_name|date_format_string}' to + * convert a field value of TIMESTAMP/DATE/TIME type into the format specified by date_format_string. The + * date_format_string is compatible with {@link java.text.SimpleDateFormat}. For example, if the option + * value is 'myusers_{log_ts|yyyy-MM-dd}', then a record with log_ts field value 2020-03-27 12:25:55 will + * be written into "myusers-2020-03-27" index. + */ +@Internal +public class IndexGeneratorFactory { + + private IndexGeneratorFactory() {} + + public static IndexGenerator createIndexGenerator(String index, TableSchema schema) { + final IndexHelper indexHelper = new IndexHelper(); + if (indexHelper.checkIsDynamicIndex(index)) { + return createRuntimeIndexGenerator(index, schema.getFieldNames(), schema.getFieldDataTypes(), indexHelper); + } else { + return new DefaultIndexGenerator(index); + } + } + + private static IndexGenerator createRuntimeIndexGenerator( + String index, + String[] fieldNames, + DataType[] fieldTypes, + IndexHelper indexHelper) { + final String dynamicIndexPatternStr = indexHelper.extractDynamicIndexPatternStr(index); + final String indexPrefix = index.substring(0, index.indexOf(dynamicIndexPatternStr)); + final String indexSuffix = index.substring(indexPrefix.length() + dynamicIndexPatternStr.length()); + + final boolean isDynamicIndexWithFormat = indexHelper.checkIsDynamicIndexWithFormat(index); + final int indexFieldPos = indexHelper.extractIndexFieldPos(index, fieldNames, isDynamicIndexWithFormat); + final TypeInformation<?> indexFieldType = TypeConversions.fromDataTypeToLegacyInfo(fieldTypes[indexFieldPos]); + + // validate index field type + indexHelper.validateIndexFieldType(indexFieldType); + + // time extract dynamic index pattern + if (isDynamicIndexWithFormat) { + final String dateTimeFormat = indexHelper.extractDateFormat(index, indexFieldType); + // DataTypes.SQL_TIMESTAMP + if (indexFieldType == Types.LOCAL_DATE_TIME) { + return new AbstractTimeIndexGenerator(dateTimeFormat) { + @Override + public String generate(Row row) { + LocalDateTime indexField = (LocalDateTime) row.getField(indexFieldPos); + String indexFieldValueStr = indexField.format(dateTimeFormatter); + return indexPrefix.concat(indexFieldValueStr).concat(indexSuffix); + } + }; + } + else if (indexFieldType == Types.SQL_TIMESTAMP) { + return new AbstractTimeIndexGenerator(dateTimeFormat) { + @Override + public String generate(Row row) { + Timestamp indexField = (Timestamp) row.getField(indexFieldPos); + String indexFieldValueStr = indexField.toLocalDateTime().format(dateTimeFormatter); + return indexPrefix.concat(indexFieldValueStr).concat(indexSuffix); + } + }; + } + // DataTypes.SQL_DATE + else if (indexFieldType == Types.LOCAL_DATE) { + return new AbstractTimeIndexGenerator(dateTimeFormat) { + @Override + public String generate(Row row) { + LocalDate indexField = (LocalDate) row.getField(indexFieldPos); + String indexFieldValueStr = indexField.format(dateTimeFormatter); + return indexPrefix.concat(indexFieldValueStr).concat(indexSuffix); + } + }; + } else if (indexFieldType == Types.SQL_DATE) { + return new AbstractTimeIndexGenerator(dateTimeFormat) { + @Override + public String generate(Row row) { + Date indexField = (Date) row.getField(indexFieldPos); + String indexFieldValueStr = indexField.toLocalDate().format(dateTimeFormatter); + return indexPrefix.concat(indexFieldValueStr).concat(indexSuffix); + } + }; + } // DataTypes.TIME + else if (indexFieldType == Types.LOCAL_TIME) { + return new AbstractTimeIndexGenerator(dateTimeFormat) { + @Override + public String generate(Row row) { + LocalTime indexField = (LocalTime) row.getField(indexFieldPos); + String indexFieldValueStr = indexField.format(dateTimeFormatter); + return indexPrefix.concat(indexFieldValueStr).concat(indexSuffix); + } + }; + } else if (indexFieldType == Types.SQL_TIME) { + return new AbstractTimeIndexGenerator(dateTimeFormat) { + @Override + public String generate(Row row) { + Time indexField = (Time) row.getField(indexFieldPos); + String indexFieldValueStr = indexField.toLocalTime().format(dateTimeFormatter); + return indexPrefix.concat(indexFieldValueStr).concat(indexSuffix); + } + }; + } else { + throw new TableException(String.format("Unsupported type '%s' found in Elasticsearch dynamic index field, " + + "time-related pattern only support types are: %s", indexFieldType, indexHelper.getSupportedDateTypes())); + } + } + // general dynamic index pattern + return new DefaultIndexGenerator(index) { + + @Override + public String generate(Row row) { + Object indexField = row.getField(indexFieldPos); + return indexPrefix.concat(indexField == null ? index : indexField.toString()).concat(indexSuffix); + } + }; + } + + /** + * Helper class for {@link IndexGeneratorFactory}, this helper can use to validate index field type + * ans parse index format from pattern. + */ + private static class IndexHelper { + private static final Pattern dynamicIndexPattern = Pattern.compile("\\{[^\\{\\}]+\\}?"); + private static final Pattern dynamicIndexTimeExtractPattern = Pattern.compile(".*\\{.+\\|.*\\}.*"); + private static final List<TypeInformation> supportedTypes = new ArrayList<>(); + private static final Map<TypeInformation, String> defaultFormats = new HashMap<>(); + + static { + //time related types + supportedTypes.add(Types.LOCAL_DATE_TIME); + supportedTypes.add(Types.SQL_TIMESTAMP); + supportedTypes.add(Types.LOCAL_DATE); + supportedTypes.add(Types.SQL_DATE); + supportedTypes.add(Types.LOCAL_TIME); + supportedTypes.add(Types.SQL_TIME); + //general types + supportedTypes.add(Types.STRING); + supportedTypes.add(Types.SHORT); + supportedTypes.add(Types.INT); + supportedTypes.add(Types.LONG); + } + + static { + defaultFormats.put(Types.LOCAL_DATE_TIME, "yyyy_MM_dd_HH_mm_ss"); + defaultFormats.put(Types.SQL_TIMESTAMP, "yyyy_MM_dd_HH_mm_ss"); + defaultFormats.put(Types.LOCAL_DATE, "yyyy_MM_dd"); + defaultFormats.put(Types.SQL_DATE, "yyyy_MM_dd"); + defaultFormats.put(Types.LOCAL_TIME, "HH_mm_ss"); + defaultFormats.put(Types.SQL_TIME, "HH_mm_ss"); + } + + /** + * Validate the index field Type. + */ + void validateIndexFieldType(TypeInformation indexTypeInfo) { + if (!supportedTypes.contains(indexTypeInfo)) { + throw new IllegalArgumentException(String.format("Unsupported type %s of index field, " + + "Supported types are: %s", indexTypeInfo, supportedTypes)); + } + } + + /** + * Get the default date format. + */ + String getDefaultFormat(TypeInformation indexTypeInfo) { + return defaultFormats.get(indexTypeInfo); + } + + /** + * Get the supported date related types. + */ + String getSupportedDateTypes() { Review comment: remove ---------------------------------------------------------------- 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
