com.stehno.sanctuary.core.archive.DefaultFileArchiver.java Source code

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Here is the source code for com.stehno.sanctuary.core.archive.DefaultFileArchiver.java

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/*
 * Copyright (c) 2011 Christopher J. Stehno
 *
 *    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.stehno.sanctuary.core.archive;

import com.stehno.sanctuary.core.ChangeSet;
import com.stehno.sanctuary.core.FileStatus;
import com.stehno.sanctuary.core.MessageSet;
import com.stehno.sanctuary.core.local.LocalStore;
import com.stehno.sanctuary.core.remote.RemoteStore;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import java.io.File;
import java.util.LinkedList;
import java.util.Queue;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Future;

/**
 * @author cjstehno
 */
public class DefaultFileArchiver implements FileArchiver {

    private static final Log log = LogFactory.getLog(DefaultFileArchiver.class);
    private final LocalStore localStore;
    private final RemoteStore remoteStore;
    private final ExecutorService executor;
    private long collectionWaitTime = 100;

    public DefaultFileArchiver(ExecutorService executor, LocalStore localStore, RemoteStore remoteStore) {
        this.executor = executor;
        this.localStore = localStore;
        this.remoteStore = remoteStore;

        if (log.isDebugEnabled())
            log.debug("Instatiated");
    }

    @Override
    public MessageSet archiveChanges(final ChangeSet changeSet) {
        if (log.isDebugEnabled())
            log.debug("Archiving changes for " + changeSet.getRootDirectory() + "...");

        final MessageSet messageSet = new MessageSet(changeSet.getRootDirectory().getPath());

        final Queue<Future> futures = new LinkedList<Future>();

        int count = 0;
        for (final File file : changeSet.listFiles(FileStatus.NEW)) {
            futures.add(executor.submit(new Runnable() {
                @Override
                public void run() {
                    try {
                        remoteStore.addFile(changeSet.getRootDirectory(), file);
                        localStore.storeFile(file);
                        messageSet.addMessage(file.getPath(), "Added successfully");

                    } catch (Exception ex) {
                        messageSet.addError(file.getPath(), "Add failed: " + ex.getMessage());
                    }
                }
            }));
            count++;
        }
        if (log.isDebugEnabled())
            log.debug("Scheduled Adds: " + count);

        count = 0;
        for (final File file : changeSet.listFiles(FileStatus.MODIFIED)) {
            futures.add(executor.submit(new Runnable() {
                @Override
                public void run() {
                    try {
                        remoteStore.updateFile(changeSet.getRootDirectory(), file);
                        localStore.storeFile(file);
                        messageSet.addMessage(file.getPath(), "Updated successfully");

                    } catch (Exception ex) {
                        messageSet.addError(file.getPath(), "Update failed: " + ex.getMessage());
                    }

                }
            }));
            count++;
        }
        if (log.isDebugEnabled())
            log.debug("Scheduled Updates: " + count);

        count = 0;
        for (final File file : changeSet.listFiles(FileStatus.DELETED)) {
            futures.add(executor.submit(new Runnable() {
                @Override
                public void run() {
                    try {
                        remoteStore.deleteFile(changeSet.getRootDirectory(), file);
                        localStore.removeFile(file);
                        messageSet.addMessage(file.getPath(), "Deleted successfully");

                    } catch (Exception ex) {
                        messageSet.addError(file.getPath(), "Delete failed: " + ex.getMessage());
                    }

                }
            }));
            count++;
        }
        if (log.isDebugEnabled())
            log.debug("Scheduled Deletes: " + count);

        do {
            while (!futures.isEmpty()) {
                if (futures.peek().isDone()) {
                    futures.poll();
                }
            }

            if (collectionWaitTime > 0) {
                try {
                    Thread.sleep(100);
                } catch (InterruptedException ie) {
                }
            }

        } while (!futures.isEmpty());

        return messageSet;
    }
}