org.dcache.sf.StageTask.java Source code

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Here is the source code for org.dcache.sf.StageTask.java

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/* dCache - http://www.dcache.org/
 *
 * Copyright (C) 2014 Deutsches Elektronen-Synchrotron
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.dcache.sf;

import com.google.common.base.Joiner;
import com.google.common.collect.Iterables;

import java.io.IOException;
import java.util.List;
import java.util.Set;

import org.dcache.pool.nearline.spi.StageRequest;
import org.dcache.util.Checksum;
import org.dcache.vehicles.FileAttributes;

class StageTask implements PollingTask<Set<Checksum>> {
    public static final int ERROR_GRACE_PERIOD = 1000;

    StageTask(StageRequest request) {
        FileAttributes fileAttributes = request.getFileAttributes();
        String id = fileAttributes.getPnfsId().toString();
    }

    @Override
    public Set<Checksum> start() throws Exception {
        return null;
    }

    @Override
    public Set<Checksum> poll() throws IOException, InterruptedException, SfException {
        return null;
    }

    private SfException throwError(List<String> lines) throws SfException {
        String error;
        int errorCode;
        if (lines.isEmpty()) {
            errorCode = 1;
            error = "Sf ??? reported a stage failure without providing a reason.";
        } else {
            try {
                errorCode = Integer.parseInt(lines.get(0));
                error = Joiner.on("\n").join(Iterables.skip(lines, 1));
            } catch (NumberFormatException e) {
                errorCode = 1;
                error = Joiner.on("\n").join(lines);
            }
        }
        throw new SfException(errorCode, error);
    }

    @Override
    public boolean abort() throws Exception {
        return false;
    }
}