com.lithium.flow.runner.LocalJarProvider Maven / Gradle / Ivy

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/*
 * Copyright 2017 Lithium Technologies, Inc.
 *
 * 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.lithium.flow.runner;

import static com.google.common.base.Preconditions.checkNotNull;

import com.lithium.flow.filer.Filer;
import com.lithium.flow.filer.Record;
import com.lithium.flow.filer.RecordPath;
import com.lithium.flow.shell.Shell;
import com.lithium.flow.util.Logs;

import java.io.IOException;

import javax.annotation.Nonnull;

import org.slf4j.Logger;

/**
 * @author Matt Ayres
 */
public class LocalJarProvider implements JarProvider {
	private static final Logger log = Logs.getLogger();

	private final Filer srcFiler;

	public LocalJarProvider(@Nonnull Filer filer) {
		srcFiler = checkNotNull(filer);
	}

	@Override
	public boolean copy(@Nonnull String path, @Nonnull Shell shell, @Nonnull Filer destFiler, @Nonnull String destDir)
			throws IOException {
		String name = RecordPath.getName(path);
		String destPath = destDir + "/" + name;

		Record srcRecord = srcFiler.getRecord(path);
		long srcSize = srcRecord.getSize();
		long destSize = destFiler.getRecord(destPath).getSize();
		if (srcSize != destSize) {
			log.debug("jar: ({} <-> {}) {} -> {}", srcSize, destSize, path, destPath);
			srcFiler.copy(path, destFiler, destPath);
		}

		return true;
	}
}