io.hops.TestUtil.java Source code

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Here is the source code for io.hops.TestUtil.java

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/*
 * Copyright (C) 2015 hops.io.
 *
 * 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.hops;

import io.hops.transaction.handler.HDFSOperationType;
import io.hops.transaction.handler.HopsTransactionalRequestHandler;
import io.hops.transaction.lock.LockFactory;
import io.hops.transaction.lock.TransactionLockTypes;
import io.hops.transaction.lock.TransactionLocks;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hdfs.server.namenode.INode;
import org.apache.hadoop.hdfs.server.namenode.NameNode;

import java.io.IOException;

public class TestUtil {

    /**
     * Get the inodeId for a file.
     *
     * @param nameNode the NameNode
     * @param path the path to the file
     * @return the inodeId
     * @throws IOException
     */
    public static int getINodeId(final NameNode nameNode, final Path path) throws IOException {
        final String filePath = path.toUri().getPath();
        return (Integer) new HopsTransactionalRequestHandler(HDFSOperationType.TEST) {
            @Override
            public void acquireLock(TransactionLocks locks) throws IOException {
                LockFactory lf = LockFactory.getInstance();
                locks.add(lf.getINodeLock(nameNode, TransactionLockTypes.INodeLockType.READ_COMMITTED,
                        TransactionLockTypes.INodeResolveType.PATH, filePath));
            }

            @Override
            public Object performTask() throws IOException {
                INode targetNode = nameNode.getNamesystem().getINode(filePath);
                return targetNode.getId();
            }
        }.handle();
    }
}