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Brutusin-RPC java client
There is a newer version: 1.9.2
/*
 * Copyright 2016 Ignacio del Valle Alles [email protected].
 *
 * 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.brutusin.rpc.client.http;

import java.io.FilterOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import org.apache.http.HttpEntity;
import org.apache.http.entity.HttpEntityWrapper;
import org.brutusin.rpc.client.ProgressCallback;

/**
 * Copied from https://github.com/x2on/gradle-hockeyapp-plugin/blob/master/src/main/groovy/de/felixschulze/gradle/util/ProgressHttpEntityWrapper.groovy
 * @author Ignacio del Valle Alles [email protected]
 */
public class ProgressHttpEntityWrapper extends HttpEntityWrapper {

    private final ProgressCallback progressCallback;

    public ProgressHttpEntityWrapper(final HttpEntity entity, final ProgressCallback progressCallback) {
        super(entity);
        this.progressCallback = progressCallback;
    }

    @Override
    public void writeTo(final OutputStream out) throws IOException {
        this.wrappedEntity.writeTo(out instanceof ProgressFilterOutputStream ? out : new ProgressFilterOutputStream(out, this.progressCallback, getContentLength()));
    }

    static class ProgressFilterOutputStream extends FilterOutputStream {

        private final ProgressCallback progressCallback;
        private long transferred;
        private long totalBytes;

        ProgressFilterOutputStream(final OutputStream out, final ProgressCallback progressCallback, final long totalBytes) {
            super(out);
            this.progressCallback = progressCallback;
            this.transferred = 0;
            this.totalBytes = totalBytes;
        }

        @Override
        public void write(final byte[] b, final int off, final int len) throws IOException {
            //super.write(byte b[], int off, int len) calls write(int b)
            out.write(b, off, len);
            this.transferred += len;
            this.progressCallback.progress(getCurrentProgress());
        }

        @Override
        public void write(final int b) throws IOException {
            out.write(b);
            this.transferred++;
            this.progressCallback.progress(getCurrentProgress());
        }

        private float getCurrentProgress() {
            return ((float) this.transferred / this.totalBytes) * 100;
        }
    }
}