/* * 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.kafka.connect.storage; import org.apache.kafka.connect.data.ConnectSchema; import org.apache.kafka.connect.data.Schema; import org.apache.kafka.connect.errors.DataException; import java.util.Map; public class OffsetUtils { @SuppressWarnings("unchecked") public static void validateFormat(Object offsetData) { if (offsetData == null) return; if (!(offsetData instanceof Map)) throw new DataException("Offsets must be specified as a Map"); validateFormat((Map<Object, Object>) offsetData); } public static <K, V> void validateFormat(Map<K, V> offsetData) { // Both keys and values for offsets may be null. For values, this is a useful way to delete offsets or indicate // that there's not usable concept of offsets in your source system. if (offsetData == null) return; for (Map.Entry<K, V> entry : offsetData.entrySet()) { if (!(entry.getKey() instanceof String)) throw new DataException("Offsets may only use String keys"); Object value = entry.getValue(); if (value == null) continue; Schema.Type schemaType = ConnectSchema.schemaType(value.getClass()); if (schemaType == null) throw new DataException("Offsets may only contain primitive types as values, but field " + entry.getKey() + " contains " + value.getClass()); if (!schemaType.isPrimitive()) throw new DataException("Offsets may only contain primitive types as values, but field " + entry.getKey() + " contains " + schemaType); } } }