com.metamx.cache.CacheExecutorFactory.java Source code

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Here is the source code for com.metamx.cache.CacheExecutorFactory.java

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/*
 * Licensed to Metamarkets Group Inc. (Metamarkets) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  Metamarkets 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 com.metamx.cache;

import com.fasterxml.jackson.annotation.JsonCreator;
import io.druid.concurrent.Execs;
import java.util.concurrent.Executor;

public enum CacheExecutorFactory {
    COMMON_FJP {
        @Override
        public Executor createExecutor() {
            return null;
        }
    },
    SINGLE_THREAD {
        @Override
        public Executor createExecutor() {
            return Execs.singleThreaded("CaffeineWorker-%s");
        }
    },
    SAME_THREAD {
        @Override
        public Executor createExecutor() {
            return Runnable::run;
        }
    };

    public abstract Executor createExecutor();

    @JsonCreator
    public static CacheExecutorFactory from(String str) {
        return Enum.valueOf(CacheExecutorFactory.class, str.toUpperCase());
    }
}