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/*
 * Copyright (c) 2008-2016, Hazelcast, Inc. All Rights Reserved.
 *
 * 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 com.hazelcast.simulator.tests.map;

import com.hazelcast.core.HazelcastInstance;
import com.hazelcast.core.TransactionalMap;
import com.hazelcast.logging.ILogger;
import com.hazelcast.logging.Logger;
import com.hazelcast.simulator.test.TestContext;
import com.hazelcast.simulator.test.annotations.RunWithWorker;
import com.hazelcast.simulator.test.annotations.Setup;
import com.hazelcast.simulator.worker.tasks.AbstractMonotonicWorker;
import com.hazelcast.transaction.TransactionContext;
import com.hazelcast.transaction.TransactionOptions;
import com.hazelcast.transaction.TransactionOptions.TransactionType;

import static com.hazelcast.simulator.tests.helpers.HazelcastTestUtils.rethrow;

public class MapTransactionContextTest {

    private static final ILogger LOGGER = Logger.getLogger(MapTransactionContextTest.class);

    // properties
    public TransactionType transactionType = TransactionType.TWO_PHASE;
    public int durability = 1;
    public int range = 1000;
    public boolean failOnException = true;

    private HazelcastInstance hz;

    @Setup
    public void setup(TestContext testContext) {
        hz = testContext.getTargetInstance();
    }

    @RunWithWorker
    public Worker createWorker() {
        return new Worker();
    }

    private class Worker extends AbstractMonotonicWorker {

        @Override
        protected void timeStep() throws Exception {
            int key = nextRandom(0, range / 2);

            TransactionOptions transactionOptions = new TransactionOptions()
                    .setTransactionType(transactionType)
                    .setDurability(durability);

            TransactionContext transactionContext = hz.newTransactionContext(transactionOptions);

            transactionContext.beginTransaction();

            TransactionalMap txMap = transactionContext.getMap("map");

            try {
                Object val = txMap.getForUpdate(key);

                if (val != null) {
                    key = nextRandom(range / 2, range);
                }

                txMap.put(key, (long) key);

                transactionContext.commitTransaction();
            } catch (Exception e) {
                LOGGER.severe("----------------------tx exception -------------------------", e);

                if (failOnException) {
                    throw rethrow(e);
                }

                transactionContext.rollbackTransaction();
            }
        }

        private int nextRandom(int min, int max) {
            return getRandom().nextInt(max - min) + min;
        }
    }
}