com.blackducksoftware.integration.build.utils.FlatDependencyListWriter.java Source code

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Here is the source code for com.blackducksoftware.integration.build.utils.FlatDependencyListWriter.java

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/*******************************************************************************
 * Copyright (C) 2016 Black Duck Software, Inc.
 * http://www.blackducksoftware.com/
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you 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.blackducksoftware.integration.build.utils;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

import org.apache.commons.io.IOUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.blackducksoftware.integration.build.Constants;
import com.blackducksoftware.integration.build.DependencyNode;

public class FlatDependencyListWriter {
    private final Logger logger = LoggerFactory.getLogger(BdioDependencyWriter.class);

    public static String getFilename(String hubProjectName) {
        return hubProjectName + Constants.FLAT_FILE_SUFFIX;
    }

    public void write(final File outputDirectory, final String hubProjectName, final DependencyNode rootNode)
            throws IOException {
        final Set<String> gavStrings = new HashSet<>();
        addAllGavs(gavStrings, rootNode);
        final List<String> gavList = new ArrayList<>(gavStrings);
        Collections.sort(gavList);

        // if the directory doesn't exist yet, let's create it
        outputDirectory.mkdirs();

        String filename = getFilename(hubProjectName);
        final File file = new File(outputDirectory, filename);
        logger.info(String.format("Generating file: %s", file.getCanonicalPath()));

        try (final OutputStream outputStream = new FileOutputStream(file)) {
            for (final String gav : gavList) {
                IOUtils.write(gav, outputStream, "UTF8");
                IOUtils.write("\n", outputStream, "UTF8");
            }
        }
    }

    private void addAllGavs(final Set<String> gavStrings, final DependencyNode node) {
        gavStrings.add(node.getGav().toString());

        for (final DependencyNode child : node.getChildren()) {
            addAllGavs(gavStrings, child);
        }
    }

}