| /* |
| * 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.drill.exec.store.sys; |
| |
| import com.fasterxml.jackson.databind.ObjectMapper; |
| import org.apache.drill.shaded.guava.com.google.common.base.Objects; |
| import org.apache.drill.shaded.guava.com.google.common.base.Preconditions; |
| import com.google.protobuf.Message; |
| import com.google.protobuf.Message.Builder; |
| import io.protostuff.Schema; |
| import org.apache.drill.exec.serialization.InstanceSerializer; |
| import org.apache.drill.exec.serialization.JacksonSerializer; |
| import org.apache.drill.exec.serialization.ProtoSerializer; |
| |
| |
| /** |
| * An abstraction for configurations that are used to create a {@link PersistentStore store}. |
| * |
| * @param <V> value type of which {@link PersistentStore} uses to store & retrieve instances |
| */ |
| public class PersistentStoreConfig<V> { |
| |
| private final String name; |
| private final InstanceSerializer<V> valueSerializer; |
| private final PersistentStoreMode mode; |
| private final int capacity; |
| |
| protected PersistentStoreConfig(String name, InstanceSerializer<V> valueSerializer, PersistentStoreMode mode, int capacity) { |
| this.name = name; |
| this.valueSerializer = valueSerializer; |
| this.mode = mode; |
| this.capacity = capacity; |
| } |
| |
| public int getCapacity() { |
| return capacity; |
| } |
| |
| public PersistentStoreMode getMode() { |
| return mode; |
| } |
| |
| public String getName() { |
| return name; |
| } |
| |
| public InstanceSerializer<V> getSerializer() { |
| return valueSerializer; |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hashCode(name, valueSerializer, mode); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (obj instanceof PersistentStoreConfig) { |
| final PersistentStoreConfig<?> other = PersistentStoreConfig.class.cast(obj); |
| return Objects.equal(name, other.name) |
| && Objects.equal(valueSerializer, other.valueSerializer) |
| && Objects.equal(mode, other.mode); |
| } |
| return false; |
| } |
| |
| public static <V extends Message, X extends Builder> StoreConfigBuilder<V> newProtoBuilder(Schema<V> writeSchema, Schema<X> readSchema) { |
| return new StoreConfigBuilder<>(new ProtoSerializer<>(readSchema, writeSchema)); |
| } |
| |
| public static <V> StoreConfigBuilder<V> newJacksonBuilder(ObjectMapper mapper, Class<V> clazz) { |
| return new StoreConfigBuilder<>(new JacksonSerializer<>(mapper, clazz)); |
| } |
| |
| public static class StoreConfigBuilder<V> { |
| private String name; |
| private InstanceSerializer<V> serializer; |
| private PersistentStoreMode mode = PersistentStoreMode.PERSISTENT; |
| private int capacity; |
| |
| protected StoreConfigBuilder(InstanceSerializer<V> serializer) { |
| super(); |
| this.serializer = serializer; |
| } |
| |
| public StoreConfigBuilder<V> name(String name) { |
| this.name = name; |
| return this; |
| } |
| |
| public StoreConfigBuilder<V> persist(){ |
| this.mode = PersistentStoreMode.PERSISTENT; |
| return this; |
| } |
| |
| public StoreConfigBuilder<V> blob(){ |
| this.mode = PersistentStoreMode.BLOB_PERSISTENT; |
| return this; |
| } |
| |
| public StoreConfigBuilder<V> setCapacity(int capacity) { |
| this.capacity = capacity; |
| return this; |
| } |
| |
| public PersistentStoreConfig<V> build(){ |
| Preconditions.checkNotNull(name); |
| return new PersistentStoreConfig<>(name, serializer, mode, capacity); |
| } |
| } |
| |
| } |