io.bdeploy.jersey.JerseyStreamingHelper Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of api Show documentation

Public API including dependencies, ready to be used for integrations and plugins.

The newest version!

package io.bdeploy.jersey;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import io.bdeploy.common.util.StreamHelper;

/**
 * Handles reading/writing of large data streams while tracking progress.
 */
public class JerseyStreamingHelper {

    private JerseyStreamingHelper() {
    }

    public static void streamWithProgress(InputStream in, OutputStream out, long length) throws IOException {

        // consume no more than length
        long remaining = length <= 0 ? Long.MAX_VALUE : length;
        final byte[] buffer = new byte[StreamHelper.BUFFER_SIZE];
        while (remaining > 0) {
            int l = in.read(buffer, 0, (int) Math.min(StreamHelper.BUFFER_SIZE, remaining));
            if (l == -1) {
                break;
            }
            out.write(buffer, 0, l);
            remaining -= l;
        }
    }
}