com.hazelcast.transaction.client.BaseTransactionRequest Maven / Gradle / Ivy

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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.transaction.client;

import com.hazelcast.client.ClientEndpoint;
import com.hazelcast.client.impl.client.CallableClientRequest;
import com.hazelcast.nio.serialization.PortableReader;
import com.hazelcast.nio.serialization.PortableWriter;
import com.hazelcast.transaction.TransactionContext;
import com.hazelcast.transaction.TransactionException;
import com.hazelcast.util.ThreadUtil;

import java.io.IOException;

public abstract class BaseTransactionRequest extends CallableClientRequest {

    protected String txnId;
    protected long clientThreadId;

    public BaseTransactionRequest() {
    }

    protected abstract Object innerCall() throws Exception;

    @Override
    public final Object call() throws Exception {
        ThreadUtil.setThreadId(clientThreadId);
        try {
            return innerCall();
        } finally {
            ThreadUtil.removeThreadId();
        }
    }

    public void setTxnId(String txnId) {
        this.txnId = txnId;
    }

    public void setClientThreadId(long clientThreadId) {
        this.clientThreadId = clientThreadId;
    }

    protected TransactionContext getTransactionContext() {
        ClientEndpoint endpoint = getEndpoint();
        TransactionContext transactionContext = endpoint.getTransactionContext(txnId);
        if (transactionContext == null) {
            throw new TransactionException("No transaction context with given transactionId: " + txnId);
        }
        return transactionContext;
    }

    @Override
    public void write(PortableWriter writer) throws IOException {
        writer.writeUTF("tId", txnId);
        writer.writeLong("cti", clientThreadId);
    }

    @Override
    public void read(PortableReader reader) throws IOException {
        txnId = reader.readUTF("tId");
        clientThreadId = reader.readLong("cti");
    }
}