Example usage for java.util.jar Manifest getMainAttributes

List of usage examples for java.util.jar Manifest getMainAttributes

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Introduction

In this page you can find the example usage for java.util.jar Manifest getMainAttributes.

Prototype

public Attributes getMainAttributes()

Source Link

Document

Returns the main Attributes for the Manifest.

Usage

From source file:org.apache.struts2.osgi.host.BaseOsgiHost.java

/**
 * Gets the version used to export the packages. it tries to get it from MANIFEST.MF, or the file name
 */// www.jav  a 2  s . c  o m
protected String getVersion(URL url) {
    if ("jar".equals(url.getProtocol())) {
        try {
            FileManager fileManager = ServletActionContext.getContext().getInstance(FileManagerFactory.class)
                    .getFileManager();
            JarFile jarFile = new JarFile(new File(fileManager.normalizeToFileProtocol(url).toURI()));
            Manifest manifest = jarFile.getManifest();
            if (manifest != null) {
                String version = manifest.getMainAttributes().getValue("Bundle-Version");
                if (StringUtils.isNotBlank(version)) {
                    return getVersionFromString(version);
                }
            } else {
                //try to get the version from the file name
                return getVersionFromString(jarFile.getName());
            }
        } catch (Exception e) {
            if (LOG.isErrorEnabled()) {
                LOG.error("Unable to extract version from [#0], defaulting to '1.0.0'", url.toExternalForm());
            }
        }
    }
    return "1.0.0";
}

From source file:org.languagetool.JLanguageTool.java

/**
 * Returns the build date or {@code null} if not run from JAR.
 *///w  ww .ja  va2s  .c  o m
@Nullable
private static String getBuildDate() {
    try {
        URL res = JLanguageTool.class.getResource(JLanguageTool.class.getSimpleName() + ".class");
        if (res == null) {
            // this will happen on Android, see http://stackoverflow.com/questions/15371274/
            return null;
        }
        Object connObj = res.openConnection();
        if (connObj instanceof JarURLConnection) {
            JarURLConnection conn = (JarURLConnection) connObj;
            Manifest manifest = conn.getManifest();
            return manifest.getMainAttributes().getValue("Implementation-Date");
        } else {
            return null;
        }
    } catch (IOException e) {
        throw new RuntimeException("Could not get build date from JAR", e);
    }
}

From source file:io.stallion.plugins.PluginRegistry.java

private void doLoadJarPlugins(String targetPath) throws Exception {
    String jarFolderPath = targetPath + "/jars";
    Log.fine("Loading jars at {0}", jarFolderPath);
    File jarFolder = new File(jarFolderPath);
    if (!jarFolder.exists() || !jarFolder.isDirectory()) {
        Log.fine("No jar folder exists at {0}. No jar plugins will be loaded.", jarFolderPath);
        return;//from  ww w . ja  v a  2s. c o  m
    }
    File[] files = jarFolder.listFiles();
    ArrayList<URL> urls = new ArrayList<URL>();
    for (int i = 0; i < files.length; i++) {
        if (files[i].getName().endsWith(".jar")) {
            //urls.add(files[i].toURL());
            Log.fine("Loading plugin jar {0}", files[i].toURI());
            urls.add(files[i].toURI().toURL());
        }
    }

    String pluginBooterClass = "";

    for (URL jarUrl : urls) {
        // Add jars to the class loader
        getClassLoader().addURL(jarUrl);
    }

    for (URL jarUrl : urls) {
        // Load the booter class
        Manifest m = new JarFile(jarUrl.getFile()).getManifest();
        Log.finer("Found manifest for jar {0}", jarUrl);
        if (!StringUtils.isEmpty(m.getMainAttributes().getValue("pluginBooterClass"))) {
            pluginBooterClass = m.getMainAttributes().getValue("pluginBooterClass");
        }
        if (empty(pluginBooterClass)) {
            continue;
        }
        Log.fine("Load plugin class {0} from jar={1}", pluginBooterClass, jarUrl);
        Class booterClass = getClassLoader().loadClass(pluginBooterClass);
        Log.finer("Booter class was loaded from: {0} ",
                booterClass.getProtectionDomain().getCodeSource().getLocation());
        StallionJavaPlugin booter = (StallionJavaPlugin) booterClass.newInstance();
        loadPluginFromBooter(booter);
        DynamicSettings.instance().initGroup(booter.getPluginName());
    }
}

From source file:org.apache.sling.maven.slingstart.PreparePackageMojoTest.java

@Test
public void testSubsystemBaseGeneration() throws Exception {
    // Provide the system with some artifacts that are known to be in the local .m2 repo
    // These are explicitly included in the test section of the pom.xml
    PreparePackageMojo ppm = getMojoUnderTest("org.apache.sling/org.apache.sling.commons.classloader/1.3.2",
            "org.apache.sling/org.apache.sling.commons.classloader/1.3.2/app",
            "org.apache.sling/org.apache.sling.commons.contentdetection/1.0.2",
            "org.apache.sling/org.apache.sling.commons.json/2.0.12",
            "org.apache.sling/org.apache.sling.commons.mime/2.1.8",
            "org.apache.sling/org.apache.sling.commons.osgi/2.3.0",
            "org.apache.sling/org.apache.sling.commons.threads/3.2.0");

    try {/*from   ww w  .j  a v a  2 s  .  c o m*/
        // The launchpad feature is a prerequisite for the model
        String modelTxt = "[feature name=:launchpad]\n" + "[artifacts]\n"
                + "  org.apache.sling/org.apache.sling.commons.classloader/1.3.2\n" + ""
                + "[feature name=test1 type=osgi.subsystem.composite]\n" + ""
                + "[:subsystem-manifest startLevel=123]\n"
                + "  Subsystem-Description: Extra subsystem headers can go here including very long ones that would span multiple lines in a manifest\n"
                + "  Subsystem-Copyright: (c) 2015 yeah!\n" + "" + "[artifacts]\n"
                + "  org.apache.sling/org.apache.sling.commons.osgi/2.3.0\n" + ""
                + "[artifacts startLevel=10]\n" + "  org.apache.sling/org.apache.sling.commons.json/2.0.12\n"
                + "  org.apache.sling/org.apache.sling.commons.mime/2.1.8\n" + ""
                + "[artifacts startLevel=20 runModes=foo,bar,:blah]\n"
                + "  org.apache.sling/org.apache.sling.commons.threads/3.2.0\n" + ""
                + "[artifacts startLevel=100 runModes=bar]\n"
                + "  org.apache.sling/org.apache.sling.commons.contentdetection/1.0.2\n";
        Model model = ModelReader.read(new StringReader(modelTxt), null);
        ppm.execute(model);

        File generatedFile = new File(ppm.getTmpDir() + "/test1.subsystem-base");
        try (JarFile jf = new JarFile(generatedFile)) {
            // Test META-INF/MANIFEST.MF
            Manifest mf = jf.getManifest();
            Attributes attrs = mf.getMainAttributes();
            String expected = "Potential_Bundles/0/org.apache.sling.commons.osgi-2.3.0.jar|"
                    + "Potential_Bundles/10/org.apache.sling.commons.json-2.0.12.jar|"
                    + "Potential_Bundles/10/org.apache.sling.commons.mime-2.1.8.jar";
            assertEquals(expected, attrs.getValue("_all_"));
            assertEquals("Potential_Bundles/20/org.apache.sling.commons.threads-3.2.0.jar",
                    attrs.getValue("foo"));
            assertEquals(
                    "Potential_Bundles/20/org.apache.sling.commons.threads-3.2.0.jar|"
                            + "Potential_Bundles/100/org.apache.sling.commons.contentdetection-1.0.2.jar",
                    attrs.getValue("bar"));

            // Test SUBSYSTEM-MANIFEST-BASE.MF
            ZipEntry smbZE = jf.getEntry("SUBSYSTEM-MANIFEST-BASE.MF");
            try (InputStream smbIS = jf.getInputStream(smbZE)) {
                Manifest smbMF = new Manifest(smbIS);
                Attributes smbAttrs = smbMF.getMainAttributes();
                assertEquals("test1", smbAttrs.getValue("Subsystem-SymbolicName"));
                assertEquals("osgi.subsystem.composite", smbAttrs.getValue("Subsystem-Type"));
                assertEquals("(c) 2015 yeah!", smbAttrs.getValue("Subsystem-Copyright"));
                assertEquals(
                        "Extra subsystem headers can go here including very long ones "
                                + "that would span multiple lines in a manifest",
                        smbAttrs.getValue("Subsystem-Description"));
            }

            // Test embedded bundles
            File mrr = getMavenRepoRoot();
            File soj = getMavenArtifactFile(mrr, "org.apache.sling", "org.apache.sling.commons.osgi", "2.3.0");
            ZipEntry sojZE = jf.getEntry("Potential_Bundles/0/org.apache.sling.commons.osgi-2.3.0.jar");
            try (InputStream is = jf.getInputStream(sojZE)) {
                assertArtifactsEqual(soj, is);
            }

            File sjj = getMavenArtifactFile(mrr, "org.apache.sling", "org.apache.sling.commons.json", "2.0.12");
            ZipEntry sjZE = jf.getEntry("Potential_Bundles/10/org.apache.sling.commons.json-2.0.12.jar");
            try (InputStream is = jf.getInputStream(sjZE)) {
                assertArtifactsEqual(sjj, is);
            }

            File smj = getMavenArtifactFile(mrr, "org.apache.sling", "org.apache.sling.commons.mime", "2.1.8");
            ZipEntry smjZE = jf.getEntry("Potential_Bundles/10/org.apache.sling.commons.mime-2.1.8.jar");
            try (InputStream is = jf.getInputStream(smjZE)) {
                assertArtifactsEqual(smj, is);
            }

            File stj = getMavenArtifactFile(mrr, "org.apache.sling", "org.apache.sling.commons.threads",
                    "3.2.0");
            ZipEntry stjZE = jf.getEntry("Potential_Bundles/20/org.apache.sling.commons.threads-3.2.0.jar");
            try (InputStream is = jf.getInputStream(stjZE)) {
                assertArtifactsEqual(stj, is);
            }

            File ctj = getMavenArtifactFile(mrr, "org.apache.sling",
                    "org.apache.sling.commons.contentdetection", "1.0.2");
            ZipEntry ctjZE = jf
                    .getEntry("Potential_Bundles/100/org.apache.sling.commons.contentdetection-1.0.2.jar");
            try (InputStream is = jf.getInputStream(ctjZE)) {
                assertArtifactsEqual(ctj, is);
            }
        }
    } finally {
        FileUtils.deleteDirectory(new File(ppm.project.getBuild().getDirectory()));
    }
}

From source file:org.gradle.api.java.archives.internal.DefaultManifest.java

private void addJavaManifestToAttributes(Manifest javaManifest) {
    attributes.put("Manifest-Version", "1.0");
    for (Object attributeKey : javaManifest.getMainAttributes().keySet()) {
        String attributeName = attributeKey.toString();
        String attributeValue = javaManifest.getMainAttributes().getValue(attributeName);
        attributes.put(attributeName, attributeValue);
    }/* w  ww .  j  ava  2 s.  co m*/
}

From source file:com.tasktop.c2c.server.jenkins.configuration.service.JenkinsServiceConfiguratorTest.java

@Test
public void testUpdateZipfile() throws Exception {

    // First, set up our zipfile test.

    // Create a manifest with a random header so that we can ensure it's preserved by the configurator.
    Manifest mf = new Manifest();
    Attributes.Name mfTestHeader = Attributes.Name.IMPLEMENTATION_VENDOR;
    String mfTestValue = "someCrazyValue";
    mf.getMainAttributes().put(mfTestHeader, mfTestValue);

    // Why do you need to add this header? See http://tech.puredanger.com/2008/01/07/jar-manifest-api/ - if you
    // don't add it, your manifest will be blank.
    mf.getMainAttributes().put(Attributes.Name.MANIFEST_VERSION, "1.0");
    assertEquals(mfTestValue, mf.getMainAttributes().getValue(mfTestHeader));

    File testWar = File.createTempFile("JenkinsServiceConfiguratorTest", ".war");
    configurator.setWarTemplateFile(testWar.getAbsolutePath());

    try {/* w  w  w  . ja v a 2 s.c  o  m*/
        JarOutputStream jarOutStream = new JarOutputStream(new FileOutputStream(testWar), mf);

        String specialFileName = "foo/bar.xml";
        String fileContents = "This is a file within our JAR file - it contains an <env-entry-value></env-entry-value> which should be filled by the configurator only if this is the 'special' file.";

        // Make our configurator replace this file within the JAR.
        configurator.setWebXmlFilename(specialFileName);

        // Create several random files in the zip.
        for (int i = 0; i < 10; i++) {
            JarEntry curEntry = new JarEntry("folder/file" + i);
            jarOutStream.putNextEntry(curEntry);
            IOUtils.write(fileContents, jarOutStream);
        }

        // Push in our special file now.
        JarEntry specialEntry = new JarEntry(specialFileName);
        jarOutStream.putNextEntry(specialEntry);
        IOUtils.write(fileContents, jarOutStream);

        // Close the output stream now, time to do the test.
        jarOutStream.close();

        // Configure this configurator with appropriate folders for testing.
        String expectedHomeDir = "/some/silly/random/homeDir";
        String webappsTarget = FileUtils.getTempDirectoryPath() + "/webapps/";
        File webappsTargetDir = new File(webappsTarget);
        if (webappsTargetDir.exists()) {
            FileUtils.deleteDirectory(webappsTargetDir);
        }
        String expectedDestFile = webappsTarget + "s#test#jenkins.war";
        configurator.setTargetJenkinsHomeBaseDir(expectedHomeDir);
        configurator.setTargetWebappsDir(webappsTarget);
        configurator.setJenkinsPath("/s/");
        ProjectServiceConfiguration config = new ProjectServiceConfiguration();
        config.setProjectIdentifier("test123");

        Map<String, String> m = new HashMap<String, String>();
        m.put(ProjectServiceConfiguration.PROJECT_ID, "test");
        m.put(ProjectServiceConfiguration.PROFILE_BASE_URL, "https://qcode.cloudfoundry.com");
        config.setProperties(m);
        config.setProjectIdentifier("test");

        // Now, run it against our test setup
        configurator.configure(config);

        // Confirm that the zipfile was updates as expected.
        File configuredWar = new File(expectedDestFile);
        assertTrue(configuredWar.exists());

        try {
            JarFile configuredWarJar = new JarFile(configuredWar);
            Manifest extractedMF = configuredWarJar.getManifest();
            assertEquals(mfTestValue, extractedMF.getMainAttributes().getValue(mfTestHeader));

            // Make sure all of our entries are present, and contain the data we expected.
            JarEntry curEntry = null;
            Enumeration<JarEntry> entries = configuredWarJar.entries();
            while (entries.hasMoreElements()) {
                curEntry = entries.nextElement();

                // If this is the manifest, skip it.
                if (curEntry.getName().equals("META-INF/MANIFEST.MF")) {
                    continue;
                }

                String entryContents = IOUtils.toString(configuredWarJar.getInputStream(curEntry));

                if (curEntry.getName().equals(specialFileName)) {
                    assertFalse(fileContents.equals(entryContents));
                    assertTrue(entryContents.contains(expectedHomeDir));
                } else {
                    // Make sure our content was unchanged.
                    assertEquals(fileContents, entryContents);
                    assertFalse(entryContents.contains(expectedHomeDir));
                }
            }
        } finally {
            // Clean up our test file.
            configuredWar.delete();
        }
    } finally {
        // Clean up our test file.
        testWar.delete();
    }
}

From source file:com.tasktop.c2c.server.hudson.configuration.service.HudsonServiceConfiguratorTest.java

@Test
public void testUpdateZipfile() throws Exception {

    // First, set up our zipfile test.

    // Create a manifest with a random header so that we can ensure it's preserved by the configurator.
    Manifest mf = new Manifest();
    Attributes.Name mfTestHeader = Attributes.Name.IMPLEMENTATION_VENDOR;
    String mfTestValue = "someCrazyValue";
    mf.getMainAttributes().put(mfTestHeader, mfTestValue);

    // Why do you need to add this header? See http://tech.puredanger.com/2008/01/07/jar-manifest-api/ - if you
    // don't add it, your manifest will be blank.
    mf.getMainAttributes().put(Attributes.Name.MANIFEST_VERSION, "1.0");
    assertEquals(mfTestValue, mf.getMainAttributes().getValue(mfTestHeader));

    File testWar = File.createTempFile("HudsonServiceConfiguratorTest", ".war");
    configurator.setWarTemplateFile(testWar.getAbsolutePath());

    try {//from ww  w . ja va 2s .  c  o  m
        JarOutputStream jarOutStream = new JarOutputStream(new FileOutputStream(testWar), mf);

        String specialFileName = "foo/bar.xml";
        String fileContents = "This is a file within our JAR file - it contains an <env-entry-value></env-entry-value> which should be filled by the configurator only if this is the 'special' file.";

        // Make our configurator replace this file within the JAR.
        configurator.setWebXmlFilename(specialFileName);

        // Create several random files in the zip.
        for (int i = 0; i < 10; i++) {
            JarEntry curEntry = new JarEntry("folder/file" + i);
            jarOutStream.putNextEntry(curEntry);
            IOUtils.write(fileContents, jarOutStream);
        }

        // Push in our special file now.
        JarEntry specialEntry = new JarEntry(specialFileName);
        jarOutStream.putNextEntry(specialEntry);
        IOUtils.write(fileContents, jarOutStream);

        // Close the output stream now, time to do the test.
        jarOutStream.close();

        // Configure this configurator with appropriate folders for testing.
        String expectedHomeDir = "/some/silly/random/homeDir";
        String webappsTarget = FileUtils.getTempDirectoryPath() + "/webapps/";
        File webappsTargetDir = new File(webappsTarget);
        if (webappsTargetDir.exists()) {
            FileUtils.deleteDirectory(webappsTargetDir);
        }
        String expectedDestFile = webappsTarget + "s#test#hudson.war";
        HudsonWarNamingStrategy warNamingStrategy = new HudsonWarNamingStrategy();
        warNamingStrategy.setPathPattern(webappsTarget + "s#%s#hudson.war");
        configurator.setHudsonWarNamingStrategy(warNamingStrategy);
        configurator.setTargetHudsonHomeBaseDir(expectedHomeDir);
        ProjectServiceConfiguration config = new ProjectServiceConfiguration();
        config.setProjectIdentifier("test123");

        Map<String, String> m = new HashMap<String, String>();
        m.put(ProjectServiceConfiguration.PROJECT_ID, "test");
        m.put(ProjectServiceConfiguration.PROFILE_BASE_URL, "https://qcode.cloudfoundry.com");
        config.setProperties(m);
        config.setProjectIdentifier("test");

        // Now, run it against our test setup
        configurator.configure(config);

        // Confirm that the zipfile was updates as expected.
        File configuredWar = new File(expectedDestFile);
        assertTrue(configuredWar.exists());

        try {
            JarFile configuredWarJar = new JarFile(configuredWar);
            Manifest extractedMF = configuredWarJar.getManifest();
            assertEquals(mfTestValue, extractedMF.getMainAttributes().getValue(mfTestHeader));

            // Make sure all of our entries are present, and contain the data we expected.
            JarEntry curEntry = null;
            Enumeration<JarEntry> entries = configuredWarJar.entries();
            while (entries.hasMoreElements()) {
                curEntry = entries.nextElement();

                // If this is the manifest, skip it.
                if (curEntry.getName().equals("META-INF/MANIFEST.MF")) {
                    continue;
                }

                String entryContents = IOUtils.toString(configuredWarJar.getInputStream(curEntry));

                if (curEntry.getName().equals(specialFileName)) {
                    assertFalse(fileContents.equals(entryContents));
                    assertTrue(entryContents.contains(expectedHomeDir));
                } else {
                    // Make sure our content was unchanged.
                    assertEquals(fileContents, entryContents);
                    assertFalse(entryContents.contains(expectedHomeDir));
                }
            }
        } finally {
            // Clean up our test file.
            configuredWar.delete();
        }
    } finally {
        // Clean up our test file.
        testWar.delete();
    }
}

From source file:org.apache.sling.maven.slingstart.PreparePackageMojoTest.java

@Test
public void testBSNRenaming() throws Exception {
    // Provide the system with some artifacts that are known to be in the local .m2 repo
    // These are explicitly included in the test section of the pom.xml
    PreparePackageMojo ppm = getMojoUnderTest("org.apache.sling/org.apache.sling.commons.classloader/1.3.2",
            "org.apache.sling/org.apache.sling.commons.classloader/1.3.2/app",
            "org.apache.sling/org.apache.sling.commons.json/2.0.12");
    try {/*from w w  w  . ja  v  a2 s .c om*/
        String modelTxt = "[feature name=:launchpad]\n" + "[artifacts]\n"
                + "  org.apache.sling/org.apache.sling.commons.classloader/1.3.2\n" + ""
                + "[feature name=rename_test]\n"
                + "  org.apache.sling/org.apache.sling.commons.json/2.0.12 [bundle:rename-bsn=r-foo.bar.renamed.sling.commons.json]\n";

        Model model = ModelReader.read(new StringReader(modelTxt), null);
        ppm.execute(model);

        File orgJar = getMavenArtifactFile(getMavenRepoRoot(), "org.apache.sling",
                "org.apache.sling.commons.json", "2.0.12");
        File generatedJar = new File(ppm.getTmpDir() + "/r-foo.bar.renamed.sling.commons.json-2.0.12.jar");

        compareJarContents(orgJar, generatedJar);

        try (JarFile jfOrg = new JarFile(orgJar); JarFile jfNew = new JarFile(generatedJar)) {
            Manifest mfOrg = jfOrg.getManifest();
            Manifest mfNew = jfNew.getManifest();

            Attributes orgAttrs = mfOrg.getMainAttributes();
            Attributes newAttrs = mfNew.getMainAttributes();
            for (Object key : orgAttrs.keySet()) {
                String orgVal = orgAttrs.getValue(key.toString());
                String newVal = newAttrs.getValue(key.toString());

                if ("Bundle-SymbolicName".equals(key.toString())) {
                    assertEquals("Should have recorded the original Bundle-SymbolicName", orgVal,
                            newAttrs.getValue("X-Original-Bundle-SymbolicName"));

                    assertEquals("r-foo.bar.renamed.sling.commons.json", newVal);
                } else {
                    assertEquals("Different keys: " + key, orgVal, newVal);
                }
            }
        }
    } finally {
        FileUtils.deleteDirectory(new File(ppm.project.getBuild().getDirectory()));
    }
}

From source file:nz.govt.natlib.ndha.manualdeposit.dialogs.About.java

@SuppressWarnings("unchecked")
private void startup() {
    try {//  ww  w  .j av a 2  s .  c o  m
        try {
            theFormControl = new FormControl(this, theSettingsPath);
        } catch (Exception ex) {
            LOG.error("Error loading form parameters", ex);
        }
        ClassLoader cLoader = Thread.currentThread().getContextClassLoader();
        Toolkit kit = Toolkit.getDefaultToolkit();
        Package p = this.getClass().getPackage();
        lblVersion.setText(p.getImplementationVersion());
        if (new File(theLogoFileName).exists()) {
            theLogo = kit.getImage(theLogoFileName);
        } else {
            java.net.URL imageURL = cLoader.getResource(theLogoFileName);
            if (imageURL != null) {
                theLogo = kit.getImage(imageURL);
            }
        }
        if (theLogo != null) {
            lblBuildNo.setForeground(Color.white);
            lblBuildNoLabel.setForeground(Color.white);
            //lblHeader.setForeground(Color.white);
            lblVersion.setForeground(Color.white);
            lblVersionLabel.setForeground(Color.white);
            paintImage();
        }
        //String manifestFileName = "/META-INF/MANIFEST.MF";
        Class cls = this.getClass();

        String className = cls.getSimpleName();
        String classFileName = className + ".class";
        String pathToThisClass = cls.getResource(classFileName).toString();
        int mark = pathToThisClass.indexOf("!");
        String pathToManifest = pathToThisClass.substring(0, mark + 1);
        if (!pathToManifest.equals("")) {
            pathToManifest += "/META-INF/MANIFEST.MF";
            LOG.debug("Path to manifest: " + pathToManifest);
            Manifest mf = new Manifest(new URL(pathToManifest).openStream());
            if (mf != null) {
                Attributes attr = mf.getMainAttributes();
                String attrVersion = "Implementation-Version";
                String attrBuild = "Implementation-Build";
                String version = attr.getValue(attrVersion);
                String build = attr.getValue(attrBuild);
                this.lblVersion.setText(version);
                this.lblBuildNo.setText(build);
            }
        }
        Runtime runtime = Runtime.getRuntime();
        long maxMemory = runtime.maxMemory();
        long allocatedMemory = runtime.totalMemory();
        long freeMemory = runtime.freeMemory();
        LOG.debug("free memory: " + freeMemory / 1024);
        LOG.debug("allocated memory: " + allocatedMemory / 1024);
        LOG.debug("max memory: " + maxMemory / 1024);
        LOG.debug("total free memory: " + (freeMemory + (maxMemory - allocatedMemory)) / 1024);
    } catch (IOException ex) {
        ex.printStackTrace();
        LOG.error(ex.getMessage(), ex);
    }
}

From source file:org.apache.felix.deploymentadmin.itest.util.DPSigner.java

private byte[] getRawBytesMainAttributes(Manifest manifest) throws IOException {
    try (ByteArrayOutputStream baos = new ByteArrayOutputStream();
            DataOutputStream dos = new DataOutputStream(baos)) {
        Attributes attrs = manifest.getMainAttributes();

        Method m = Attributes.class.getDeclaredMethod("writeMain", DataOutputStream.class);
        m.setAccessible(true);//from w w  w.  ja  v  a 2 s  . co m
        m.invoke(attrs, dos);

        return baos.toByteArray();
    } catch (NoSuchMethodException | SecurityException | InvocationTargetException | IllegalAccessException e) {
        throw new RuntimeException("Failed to get raw bytes of main attributes!", e);
    }
}