com.sap.netweaver.porta.core.nw7.FileUploaderImpl.java Source code

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Here is the source code for com.sap.netweaver.porta.core.nw7.FileUploaderImpl.java

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/*******************************************************************************
 * Copyright (c) 2010 SAP AG.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    Kaloyan Raev (SAP AG) - initial API and implementation
 *******************************************************************************/
package com.sap.netweaver.porta.core.nw7;

import static com.sap.netweaver.porta.core.nw7.FaultReasons.*;

import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpException;
import org.apache.commons.httpclient.HttpStatus;
import org.apache.commons.httpclient.UsernamePasswordCredentials;
import org.apache.commons.httpclient.auth.AuthScope;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.httpclient.methods.multipart.FilePart;
import org.apache.commons.httpclient.methods.multipart.MultipartRequestEntity;
import org.apache.commons.httpclient.methods.multipart.Part;

import com.sap.netweaver.porta.core.CoreException;
import com.sap.netweaver.porta.core.NoWSGateException;
import com.sap.netweaver.porta.core.NotAuthorizedException;

public class FileUploaderImpl implements FileUploader {

    private String url;
    private HttpClient client;
    private AuthScope authScope;

    public FileUploaderImpl(String host, int port) {
        url = String.format("http://%s:%d/DeployWS/FileUpload", host, port);
        client = null;
        authScope = new AuthScope(host, port, "DeployWS Basic Authentication Area");
    }

    public void setCredentials(String user, String password) {
        client = new HttpClient();
        client.getParams().setAuthenticationPreemptive(true);
        client.getState().setCredentials(authScope, new UsernamePasswordCredentials(user, password));
    }

    public String[] upload(File[] archives) throws CoreException {
        // check if there are any credentials already set
        if (client == null) {
            // trigger the mechanism for requesting user for credentials
            throw new NotAuthorizedException(FAULT_UNAUTHORIZED.getFaultReason());
        }

        PostMethod method = null;
        try {
            Part[] parts = new Part[archives.length];
            for (int i = 0; i < archives.length; i++) {
                parts[i] = new FilePart(archives[i].getName(), archives[i]);
            }

            method = new PostMethod(url);
            method.setDoAuthentication(true);
            method.setRequestEntity(new MultipartRequestEntity(parts, method.getParams()));

            int statusCode = client.executeMethod(method);
            if (statusCode == HttpStatus.SC_UNAUTHORIZED) {
                throw new NotAuthorizedException(FAULT_INVALID_CREDENTIALS.getFaultReason());
            } else if (statusCode == HttpStatus.SC_FORBIDDEN) {
                throw new NotAuthorizedException(FAULT_PERMISSION_DENIED.getFaultReason());
            } else if (statusCode == HttpStatus.SC_NOT_FOUND) {
                throw new NoWSGateException(null, url);
            } else if (statusCode != HttpStatus.SC_OK) {
                throw new CoreException(method.getStatusText());
            }

            InputStream responseStream = method.getResponseBodyAsStream();
            BufferedReader responseReader = new BufferedReader(new InputStreamReader(responseStream));
            String line;
            List<String> paths = new ArrayList<String>();
            while ((line = responseReader.readLine()) != null) {
                paths.add(line);
            }
            responseReader.close();
            responseStream.close();

            return paths.toArray(new String[] {});
        } catch (HttpException e) {
            throw new CoreException(e);
        } catch (IOException e) {
            throw new CoreException(e);
        } finally {
            if (method != null) {
                method.releaseConnection();
            }
        }
    }

}