org.zalando.logbook.servlet.ByteStreams Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of logbook-servlet Show documentation

Servlet 3 filter for HTTP request and response logging

There is a newer version: 1.5.1

package org.zalando.logbook.servlet;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Objects;

final class ByteStreams {

    ByteStreams() {
        // package private so we can trick code coverage
    }

    public static byte[] toByteArray(final InputStream in) throws IOException {
        final ByteArrayOutputStream out = new ByteArrayOutputStream();
        copy(in, out);
        return out.toByteArray();
    }

    public static void copy(final InputStream from, final OutputStream to) throws IOException {
        Objects.requireNonNull(from);
        Objects.requireNonNull(to);
        final byte[] buf = new byte[4096];
        while (true) {
            final int r = from.read(buf);
            if (r == -1) {
                break;
            }
            to.write(buf, 0, r);
        }
    }
}