ch.hortis.sonar.mvn.SonarRemoteServices Maven / Gradle / Ivy

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/*
 * Sonar, entreprise quality control tool.
 * Copyright (C) 2007-2008 Hortis-GRC SA
 * mailto:be_agile HAT hortis DOT ch
 *
 * Sonar is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * Sonar 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with Sonar; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02
 */
package ch.hortis.sonar.mvn;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;

public class SonarRemoteServices {

  private String remoteHostURL;
  
  private static final int CONNECT_TIMEOUT_MILLISECONDS = 10000;
  private static final int READ_TIMEOUT_MILLISECONDS = 15000;

  public SonarRemoteServices(String remoteHostURL) {
    this.remoteHostURL = remoteHostURL;
    if ( this.remoteHostURL.endsWith("/") ) {
      this.remoteHostURL = this.remoteHostURL.substring(0,this.remoteHostURL.length() -1);
    }
  }

  public boolean ping() {
    ByteArrayOutputStream target = new ByteArrayOutputStream();
    try {
      callRemoteFile("/remote_services/ping", target);
    } catch (IOException e) {
      return false;
    }
    return new String(target.toByteArray()).equals("ping");
  }
  
  public String getVersion() throws IOException {
    ByteArrayOutputStream target = new ByteArrayOutputStream();
    callRemoteFile("/remote_services/version", target);
    String version = new String(target.toByteArray());
    if ( version.trim().length() == 0 ) {
      throw new IOException("Empty version returned from server");
    }
    return new String(target.toByteArray());
  }
  
  private InputStream getRemoteFile(URL url) throws IOException {
    HttpURLConnection conn = (HttpURLConnection)url.openConnection();
    conn.setConnectTimeout(CONNECT_TIMEOUT_MILLISECONDS);
    conn.setReadTimeout(READ_TIMEOUT_MILLISECONDS);
    conn.connect();
    return conn.getInputStream();
  }
  
  private void callRemoteFile(String filePathOnServer, OutputStream target) throws IOException {
    String fullFileURL = remoteHostURL + filePathOnServer;
    try {
      InputStream in = getRemoteFile( new URL(fullFileURL) );
      byte[] buffer = new byte[64];
      int readen;
      while ( ( readen = in.read( buffer ) ) != -1 ) {
        target.write( buffer, 0, readen );
      }
      in.close();
      target.close();
    } catch (IOException ex) {
      IOException ioEx = new IOException("Error occured during file " + fullFileURL + " download");
      ioEx.initCause(ex);
      throw ioEx;
    }
  }

}