hopsworks-master/hopsworks-api/src/main/java/io/hops/hopsworks/api/proxy/CachedBodyServletInputStream.java
/*
 * This file is part of Hopsworks
 * Copyright (C) 2022, Hopsworks AB. All rights reserved
 *
 * Hopsworks is free software: you can redistribute it and/or modify it under the terms of
 * the GNU Affero General Public License as published by the Free Software Foundation,
 * either version 3 of the License, or (at your option) any later version.
 *
 * Hopsworks 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License along with this program.
 * If not, see <https://www.gnu.org/licenses/>.
 */
package io.hops.hopsworks.api.proxy;

import javax.servlet.ReadListener;
import javax.servlet.ServletInputStream;
import java.io.ByteArrayInputStream;
import java.io.IOException;

public class CachedBodyServletInputStream extends ServletInputStream {
  private final ByteArrayInputStream cachedBodyInputStream;
  
  public CachedBodyServletInputStream(byte[] cachedBody) {
    this.cachedBodyInputStream = new ByteArrayInputStream(cachedBody);
  }
  
  @Override
  public boolean isFinished() {
    return this.cachedBodyInputStream.available() == 0;
  }
  
  @Override
  public boolean isReady() {
    return true;
  }
  
  @Override
  public void setReadListener(ReadListener readListener) {
  
  }
  
  @Override
  public int read() throws IOException {
    return cachedBodyInputStream.read();
  }
}
