1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 package org.apache.shardingsphere.globalclock.provider; 19 20 import org.apache.shardingsphere.infra.spi.annotation.SingletonSPI; 21 import org.apache.shardingsphere.infra.spi.type.typed.TypedSPI; 22 23 /** 24 * Global clock provider. 25 */ 26 @SingletonSPI 27 public interface GlobalClockProvider extends TypedSPI { 28 29 /** 30 * Get current timestamp. 31 * 32 * @return current timestamp 33 */ 34 long getCurrentTimestamp(); 35 36 /** 37 * Get next timestamp. 38 * 39 * @return next timestamp 40 */ 41 long getNextTimestamp(); 42 }