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Bucket4j integration with Infinispan
There is a newer version: 8.0.1
/*
 *
 * Copyright 2015-2018 Vladimir Bukhtoyarov
 *
 *       Licensed 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 io.github.bucket4j.grid.infinispan;

import io.github.bucket4j.BucketConfiguration;
import io.github.bucket4j.Nothing;
import io.github.bucket4j.grid.CommandResult;
import io.github.bucket4j.grid.GridBucketState;
import io.github.bucket4j.grid.GridCommand;
import io.github.bucket4j.grid.GridProxy;
import io.github.bucket4j.grid.jcache.JCacheEntryProcessor;
import org.infinispan.commons.CacheException;
import org.infinispan.functional.EntryView;
import org.infinispan.functional.FunctionalMap.ReadWriteMap;
import org.infinispan.util.function.SerializableFunction;

import java.io.Serializable;
import java.util.Optional;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;

public class InfinispanProxy implements GridProxy {

    private final ReadWriteMap readWriteMap;

    public InfinispanProxy(ReadWriteMap readWriteMap) {
        this.readWriteMap = readWriteMap;
    }

    @Override
    public  CommandResult execute(K key, GridCommand command) {
        JCacheEntryProcessor entryProcessor = JCacheEntryProcessor.executeProcessor(command);
        return invokeSync(key, entryProcessor);
    }

    @Override
    public void createInitialState(K key, BucketConfiguration configuration) {
        JCacheEntryProcessor entryProcessor = JCacheEntryProcessor.initStateProcessor(configuration);
        invokeSync(key, entryProcessor);
    }

    @Override
    public  T createInitialStateAndExecute(K key, BucketConfiguration configuration, GridCommand command) {
        JCacheEntryProcessor entryProcessor = JCacheEntryProcessor.initStateAndExecuteProcessor(command, configuration);
        CommandResult result = invokeSync(key, entryProcessor);
        return result.getData();
    }

    @Override
    public  CompletableFuture> executeAsync(K key, GridCommand command) {
        JCacheEntryProcessor entryProcessor = JCacheEntryProcessor.executeProcessor(command);
        return invokeAsync(key, entryProcessor);
    }

    @Override
    public  CompletableFuture createInitialStateAndExecuteAsync(K key, BucketConfiguration configuration, GridCommand command) {
        JCacheEntryProcessor entryProcessor = JCacheEntryProcessor.initStateAndExecuteProcessor(command, configuration);
        CompletableFuture> result = invokeAsync(key, entryProcessor);
        return result.thenApply(CommandResult::getData);
    }

    @Override
    public Optional getConfiguration(K key) {
        try {
            SerializableFunction, GridBucketState> findFunction =
                    (SerializableFunction, GridBucketState>)
                    entry -> entry.find().orElse(null);
            GridBucketState state = readWriteMap.eval(key, findFunction).get();
            if (state == null) {
                return Optional.empty();
            } else {
                return Optional.of(state.getConfiguration());
            }
        } catch (InterruptedException | ExecutionException e) {
            throw new CacheException(e);
        }
    }

    @Override
    public boolean isAsyncModeSupported() {
        return true;
    }

    private  CommandResult invokeSync(final K key, final JCacheEntryProcessor entryProcessor) {
        try {
            return readWriteMap.eval(key, new SerializableFunctionAdapter<>(entryProcessor)).get();
        } catch (InterruptedException | ExecutionException e) {
            throw new CacheException(e);
        }
    }

    private  CompletableFuture> invokeAsync(final K key, final JCacheEntryProcessor entryProcessor) {
        return readWriteMap.eval(key, new SerializableFunctionAdapter<>(entryProcessor));
    }

}