| /* |
| * 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 static org.apache.flink.statefun.flink.core.state.ExpirationUtil.configureStateTtl; |
| |
| import java.util.Objects; |
| import org.apache.flink.api.common.functions.RuntimeContext; |
| import org.apache.flink.api.common.state.ListState; |
| import org.apache.flink.api.common.state.ListStateDescriptor; |
| import org.apache.flink.api.common.state.MapState; |
| import org.apache.flink.api.common.state.MapStateDescriptor; |
| import org.apache.flink.api.common.state.ValueState; |
| import org.apache.flink.api.common.state.ValueStateDescriptor; |
| import org.apache.flink.api.common.typeinfo.TypeInformation; |
| import org.apache.flink.runtime.state.KeyedStateBackend; |
| import org.apache.flink.statefun.flink.core.common.KeyBy; |
| import org.apache.flink.statefun.flink.core.di.Inject; |
| import org.apache.flink.statefun.flink.core.di.Label; |
| import org.apache.flink.statefun.flink.core.types.DynamicallyRegisteredTypes; |
| import org.apache.flink.statefun.sdk.Address; |
| import org.apache.flink.statefun.sdk.FunctionType; |
| import org.apache.flink.statefun.sdk.state.Accessor; |
| import org.apache.flink.statefun.sdk.state.AppendingBufferAccessor; |
| import org.apache.flink.statefun.sdk.state.PersistedAppendingBuffer; |
| import org.apache.flink.statefun.sdk.state.PersistedTable; |
| import org.apache.flink.statefun.sdk.state.PersistedValue; |
| import org.apache.flink.statefun.sdk.state.TableAccessor; |
| |
| public final class FlinkState implements State { |
| |
| private final RuntimeContext runtimeContext; |
| private final KeyedStateBackend<Object> keyedStateBackend; |
| private final DynamicallyRegisteredTypes types; |
| |
| @Inject |
| public FlinkState( |
| @Label("runtime-context") RuntimeContext runtimeContext, |
| @Label("keyed-state-backend") KeyedStateBackend<Object> keyedStateBackend, |
| DynamicallyRegisteredTypes types) { |
| |
| this.runtimeContext = Objects.requireNonNull(runtimeContext); |
| this.keyedStateBackend = Objects.requireNonNull(keyedStateBackend); |
| this.types = Objects.requireNonNull(types); |
| } |
| |
| @Override |
| public <T> Accessor<T> createFlinkStateAccessor( |
| FunctionType functionType, PersistedValue<T> persistedValue) { |
| TypeInformation<T> typeInfo = types.registerType(persistedValue.type()); |
| String stateName = flinkStateName(functionType, persistedValue.name()); |
| ValueStateDescriptor<T> descriptor = new ValueStateDescriptor<>(stateName, typeInfo); |
| configureStateTtl(descriptor, persistedValue.expiration()); |
| ValueState<T> handle = runtimeContext.getState(descriptor); |
| return new FlinkValueAccessor<>(handle); |
| } |
| |
| @Override |
| public <K, V> TableAccessor<K, V> createFlinkStateTableAccessor( |
| FunctionType functionType, PersistedTable<K, V> persistedTable) { |
| |
| MapStateDescriptor<K, V> descriptor = |
| new MapStateDescriptor<>( |
| flinkStateName(functionType, persistedTable.name()), |
| types.registerType(persistedTable.keyType()), |
| types.registerType(persistedTable.valueType())); |
| |
| configureStateTtl(descriptor, persistedTable.expiration()); |
| MapState<K, V> handle = runtimeContext.getMapState(descriptor); |
| return new FlinkTableAccessor<>(handle); |
| } |
| |
| @Override |
| public <E> AppendingBufferAccessor<E> createFlinkStateAppendingBufferAccessor( |
| FunctionType functionType, PersistedAppendingBuffer<E> persistedAppendingBuffer) { |
| ListStateDescriptor<E> descriptor = |
| new ListStateDescriptor<>( |
| flinkStateName(functionType, persistedAppendingBuffer.name()), |
| types.registerType(persistedAppendingBuffer.elementType())); |
| configureStateTtl(descriptor, persistedAppendingBuffer.expiration()); |
| ListState<E> handle = runtimeContext.getListState(descriptor); |
| return new FlinkAppendingBufferAccessor<>(handle); |
| } |
| |
| @Override |
| public void setCurrentKey(Address address) { |
| keyedStateBackend.setCurrentKey(KeyBy.apply(address)); |
| } |
| |
| public static String flinkStateName(FunctionType functionType, String name) { |
| return String.format("%s.%s.%s", functionType.namespace(), functionType.name(), name); |
| } |
| } |