kafka OffsetUtils 源码
kafka OffsetUtils 代码
文件路径：/connect/runtime/src/main/java/org/apache/kafka/connect/storage/OffsetUtils.java
/*
* 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);
}
}
}
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