| /* |
| * 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.statefun.flink.core.state; |
| |
| import org.apache.flink.api.common.state.StateDescriptor; |
| import org.apache.flink.api.common.state.StateTtlConfig; |
| import org.apache.flink.api.common.state.StateTtlConfig.Builder; |
| import org.apache.flink.api.common.state.StateTtlConfig.StateVisibility; |
| import org.apache.flink.api.common.state.StateTtlConfig.TtlTimeCharacteristic; |
| import org.apache.flink.api.common.state.StateTtlConfig.UpdateType; |
| import org.apache.flink.api.common.time.Time; |
| import org.apache.flink.statefun.sdk.state.Expiration; |
| import org.apache.flink.statefun.sdk.state.Expiration.Mode; |
| |
| final class ExpirationUtil { |
| private ExpirationUtil() {} |
| |
| static void configureStateTtl(StateDescriptor<?, ?> handle, Expiration expiration) { |
| if (expiration.mode() == Mode.NONE) { |
| return; |
| } |
| StateTtlConfig ttlConfig = from(expiration); |
| handle.enableTimeToLive(ttlConfig); |
| } |
| |
| private static StateTtlConfig from(Expiration expiration) { |
| final long millis = expiration.duration().toMillis(); |
| Builder builder = StateTtlConfig.newBuilder(Time.milliseconds(millis)); |
| builder.setTtlTimeCharacteristic(TtlTimeCharacteristic.ProcessingTime); |
| builder.setStateVisibility(StateVisibility.NeverReturnExpired); |
| switch (expiration.mode()) { |
| case AFTER_WRITE: |
| { |
| builder.setUpdateType(UpdateType.OnCreateAndWrite); |
| break; |
| } |
| case AFTER_READ_OR_WRITE: |
| { |
| builder.setUpdateType(UpdateType.OnReadAndWrite); |
| break; |
| } |
| default: |
| throw new IllegalArgumentException("Unknown expiration mode " + expiration.mode()); |
| } |
| return builder.build(); |
| } |
| } |