| /* |
| * 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.samza.config; |
| |
| import java.util.LinkedList; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.stream.Collectors; |
| |
| /** |
| * A helper class for handling table configuration |
| */ |
| public class JavaTableConfig extends MapConfig { |
| |
| // Prefix |
| public static final String TABLES_PREFIX = "tables."; |
| public static final String TABLE_ID_PREFIX = TABLES_PREFIX + "%s"; |
| |
| // Suffix |
| public static final String TABLE_PROVIDER_FACTORY_SUFFIX = ".provider.factory"; |
| |
| // Config keys |
| public static final String TABLE_PROVIDER_FACTORY = String.format("%s.provider.factory", TABLE_ID_PREFIX); |
| public static final String STORE_KEY_SERDE = "stores.%s.key.serde"; |
| public static final String STORE_MSG_SERDE = "stores.%s.msg.serde"; |
| |
| public JavaTableConfig(Map<String, String> config) { |
| super(config); |
| } |
| |
| /** |
| * Get Id's of all tables |
| * @return list of table Id's |
| */ |
| public List<String> getTableIds() { |
| Config subConfig = subset(TABLES_PREFIX, true); |
| Set<String> tableNames = subConfig.keySet().stream() |
| .filter(k -> k.endsWith(TABLE_PROVIDER_FACTORY_SUFFIX)) |
| .map(k -> k.replace(TABLE_PROVIDER_FACTORY_SUFFIX, "")) |
| .collect(Collectors.toSet()); |
| return new LinkedList<>(tableNames); |
| } |
| |
| /** |
| * Get the {@link org.apache.samza.table.TableProviderFactory} class name for a table |
| * @param tableId Id of the table |
| * @return the {@link org.apache.samza.table.TableProviderFactory} class name |
| */ |
| public String getTableProviderFactory(String tableId) { |
| return get(String.format(TABLE_PROVIDER_FACTORY, tableId), null); |
| } |
| |
| /** |
| * Get registry keys of key serde for this table |
| * @param tableId Id of the table |
| * @return serde retistry key |
| */ |
| public String getKeySerde(String tableId) { |
| return get(String.format(STORE_KEY_SERDE, tableId), null); |
| } |
| |
| /** |
| * Get registry keys of value serde for this table |
| * @param tableId Id of the table |
| * @return serde retistry key |
| */ |
| public String getMsgSerde(String tableId) { |
| return get(String.format(STORE_MSG_SERDE, tableId), null); |
| } |
| |
| /** |
| * Get table config value for a key |
| * @param tableId Id of the table |
| * @param key Key for the config item |
| * @param defaultValue default value if absent in config |
| * @return config value for the key |
| */ |
| public String getForTable(String tableId, String key, String defaultValue) { |
| return get(buildKey(tableId, key), defaultValue); |
| } |
| |
| /** |
| * Get table config value for a key |
| * @param tableId Id of the table |
| * @param key Key for the config item |
| * @return config value for the key |
| */ |
| public String getForTable(String tableId, String key) { |
| return getForTable(tableId, key, null); |
| } |
| |
| /** |
| * Build complete config key for a config item |
| * @param tableId Id of the table |
| * @param key Key for the config item |
| * @return the complete config key |
| */ |
| static public String buildKey(String tableId, String key) { |
| return String.format(TABLE_ID_PREFIX + ".%s", tableId, key); |
| } |
| } |