Quellcode-Bibliothek

^© Kompilation durch diese Firma

[Weder Korrektheit noch Funktionsfähigkeit der Software werden zugesichert.]

Datei: Simple.java Sprache: JAVA

/*
* Copyright (c) 2013, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.  Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package jdk.test.lib.jfr;

import java.io.File;
import java.io.IOException;
import java.nio.file.AccessDeniedException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.List;

import jdk.jfr.consumer.RecordedEvent;
import jdk.jfr.consumer.RecordingFile;
import jdk.test.lib.Asserts;

/**
* Common helper class.
*/
public class FileHelper {

    public static Path getDest(String subPath) throws IOException {
        Path path = Paths.get(subPath + "/test.jfr");
        Path parent = path.getParent();
        if (parent == null) {
            throw new IOException("No parent cound be found for path " + subPath);
        }
        Files.createDirectories(parent);
        return path;
    }

    public static Path createLongDir(Path root) throws IOException {
        final int minPathLength = 400;
        StringBuilder buff = new StringBuilder();
        buff.append(root.toString());
        while (buff.length() < minPathLength) {
            buff.append("/veryLongPath012345678901234567890123456789");
        }
        Path path = Paths.get(buff.toString());
        System.out.println("long dir=" + path);
        Files.createDirectories(path);
        return path;
    }

    public static Path getDestReadOnly(String subPath) throws IOException {
        final Path path = getDest(subPath);
        Path parent = path.getParent();
        if (parent == null) {
            throw new IOException("No parent cound be found for path " + subPath);
        }
        parent.toFile().setReadOnly();
        return path;
    }

    public static Path createReadOnlyFile(Path path) throws IOException {
        final Path createdPath = Files.createFile(path);
        createdPath.toFile().setReadOnly();
        return createdPath;
    }

    public static Path createReadOnlyDir(Path path) throws IOException {
        final Path createdPath = Files.createDirectories(path);
        createdPath.toFile().setReadOnly();
        return createdPath;
    }

    public static Path getDestNotExist() {
        return Paths.get(".", "thisDirDoesNotExist/test.jfr");
    }

    public static boolean isReadOnlyPath(Path path) throws IOException {
        // Files.isWritable(path) can not really be trusted. At least not on Windows.
        // If path is a directory, we try to create a new file in it.
        if (Files.isDirectory(path)) {
            try {
                Path f = Files.createFile(Paths.get(path.toString(), "dummyFileToCheckReadOnly"));
                System.out.printf("Dir is not read-only, created %s, exists=%b%n", f, Files.exists(f));
                return false;
            } catch (AccessDeniedException e) {
                System.out.printf("'%s' verified read-only by %s%n", path, e.toString());
                return true;
            }
        } else {
            boolean isReadOnly = !Files.isWritable(path);
            System.out.format("isReadOnly '%s': %b%n", path, isReadOnly);
            return isReadOnly;
        }
    }

    public static void verifyRecording(File file) throws Exception {
        Asserts.assertTrue(file.exists(), file.getAbsolutePath() + " does not exist");
        Asserts.assertTrue(file.isFile(), file.getAbsolutePath() + " is not a file");
        Asserts.assertGreaterThan(file.length(), 0L, "Size of recording is 0.");
        List<RecordedEvent> events = RecordingFile.readAllEvents(file.toPath());
        for (RecordedEvent event : events) {
            System.out.printf("First event in recording '%s':%n%s", file.getName(), event);
            return;
        }
        Asserts.fail("No events in file " + file.getName());
    }

}

¤ Dauer der Verarbeitung: 0.24 Sekunden (vorverarbeitet) ¤

Download des Quellennavigators
Download des sprechenden Kalenders
in der Quellcodebibliothek suchen

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung ist noch experimentell.