/*
 * Copyright (c) 2015 Cisco Systems, Inc. and others.  All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 */
package org.opendaylight.controller.md.sal.dom.broker.impl;

import com.google.common.util.concurrent.AsyncFunction;
import com.google.common.util.concurrent.CheckedFuture;
import com.google.common.util.concurrent.Futures;
import com.google.common.util.concurrent.ListenableFuture;
import org.opendaylight.controller.md.sal.common.api.TransactionStatus;
import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
import org.opendaylight.yangtools.yang.common.RpcResult;
import org.opendaylight.yangtools.yang.common.RpcResultBuilder;

class CommitCompatibility {
    private static final ListenableFuture<RpcResult<TransactionStatus>> SUCCESS_FUTURE = Futures
            .immediateFuture(RpcResultBuilder.success(TransactionStatus.COMMITED).build());

    private CommitCompatibility() {
        throw new UnsupportedOperationException("Helper class");
    }

    static ListenableFuture<RpcResult<TransactionStatus>> convertToLegacyCommitFuture(
            final CheckedFuture<Void, TransactionCommitFailedException> from) {
        return Futures.transform(from, new AsyncFunction<Void, RpcResult<TransactionStatus>>() {
            @Override
            public ListenableFuture<RpcResult<TransactionStatus>> apply(final Void input) {
                return SUCCESS_FUTURE;
            }
        });
    }
}