org.uberfire.java.nio.fs.jgit.AbstractTestInfra.java Source code

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Here is the source code for org.uberfire.java.nio.fs.jgit.AbstractTestInfra.java

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/*
 * Copyright 2015 Red Hat, Inc. and/or its affiliates.
 *
 * 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 org.uberfire.java.nio.fs.jgit;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.StringWriter;
import java.net.ServerSocket;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.commons.io.IOUtils;
import org.eclipse.jgit.api.Git;
import org.eclipse.jgit.api.errors.GitAPIException;
import org.eclipse.jgit.lib.PersonIdent;
import org.eclipse.jgit.util.FileUtils;
import org.junit.After;
import org.junit.AfterClass;
import org.junit.Assert;
import org.junit.Before;
import org.junit.BeforeClass;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import static org.uberfire.java.nio.fs.jgit.util.JGitUtil.commit;

public abstract class AbstractTestInfra {

    protected static final Map<String, Object> EMPTY_ENV = Collections.emptyMap();
    private static final Logger logger = LoggerFactory.getLogger(AbstractTestInfra.class);
    private static final List<File> tempFiles = new ArrayList<File>();

    protected JGitFileSystemProvider provider;

    @AfterClass
    @BeforeClass
    public static void cleanup() {
        for (final File tempFile : tempFiles) {
            try {
                FileUtils.delete(tempFile, FileUtils.RECURSIVE);
            } catch (IOException e) {
            }
        }
    }

    protected static File createTempDirectory() throws IOException {
        final File temp = File.createTempFile("temp", Long.toString(System.nanoTime()));
        if (!(temp.delete())) {
            throw new IOException("Could not delete temp file: " + temp.getAbsolutePath());
        }

        if (!(temp.mkdir())) {
            throw new IOException("Could not create temp directory: " + temp.getAbsolutePath());
        }

        tempFiles.add(temp);

        return temp;
    }

    public static int findFreePort() {
        int port = 0;
        try {
            ServerSocket server = new ServerSocket(0);
            port = server.getLocalPort();
            server.close();
        } catch (IOException e) {
            Assert.fail("Can't find free port!");
        }
        logger.debug("Found free port " + port);
        return port;
    }

    @Before
    public void createGitFsProvider() {
        provider = new JGitFileSystemProvider(getGitPreferences());
    }

    /*
     * Default Git preferences suitable for most of the tests. If specific test needs some custom configuration, it needs to
     * override this method and provide own map of preferences.
     */
    public Map<String, String> getGitPreferences() {
        Map<String, String> gitPrefs = new HashMap<String, String>();
        // disable the daemons by default as they not needed in most of the cases
        gitPrefs.put("org.uberfire.nio.git.daemon.enabled", "false");
        gitPrefs.put("org.uberfire.nio.git.ssh.enabled", "false");
        return gitPrefs;
    }

    @After
    public void destroyGitFsProvider() throws IOException {
        if (provider == null) {
            // this would mean that setup failed. no need to clean up.
            return;
        }

        provider.shutdown();

        if (provider.getGitRepoContainerDir() != null && provider.getGitRepoContainerDir().exists()) {
            FileUtils.delete(provider.getGitRepoContainerDir(), FileUtils.RECURSIVE);
        }
    }

    protected Git setupGit() throws IOException, GitAPIException {
        return setupGit(createTempDirectory());
    }

    protected Git setupGit(final File tempDir) throws IOException, GitAPIException {

        final Git git = Git.init().setBare(true).setDirectory(tempDir).call();

        commit(git, "master", "name", "name@example.com", "cool1", null, null, false, new HashMap<String, File>() {
            {
                put("file1.txt", tempFile("content"));
                put("file2.txt", tempFile("content2"));
            }
        });

        return git;
    }

    public File tempFile(final String content) throws IOException {
        final File file = File.createTempFile("bar", "foo");
        final OutputStream out = new FileOutputStream(file);

        if (content != null && !content.isEmpty()) {
            out.write(content.getBytes());
            out.flush();
        }

        out.close();
        return file;
    }

    public File tempFile(final byte[] content) throws IOException {
        final File file = File.createTempFile("bar", "foo");
        final FileOutputStream out = new FileOutputStream(file);

        if (content != null && content.length > 0) {
            out.write(content);
            out.flush();
        }

        out.close();
        return file;
    }

    public PersonIdent getAuthor() {
        return new PersonIdent("user", "user@example.com");
    }

    protected byte[] loadImage(final String path) throws IOException {
        final InputStream stream = this.getClass().getClassLoader().getResourceAsStream(path);
        StringWriter writer = new StringWriter();
        IOUtils.copy(stream, writer);
        return writer.toString().getBytes();
    }
}