org.apache.hadoop.gateway.dispatch.HdfsDispatch.java Source code

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Here is the source code for org.apache.hadoop.gateway.dispatch.HdfsDispatch.java

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/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.apache.hadoop.gateway.dispatch;

import org.apache.hadoop.gateway.audit.api.Action;
import org.apache.hadoop.gateway.audit.api.ActionOutcome;
import org.apache.hadoop.gateway.audit.api.AuditServiceFactory;
import org.apache.hadoop.gateway.audit.api.Auditor;
import org.apache.hadoop.gateway.audit.api.ResourceType;
import org.apache.hadoop.gateway.audit.log4j.audit.AuditConstants;
import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPut;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import org.eclipse.jetty.http.HttpStatus;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;

public class HdfsDispatch extends HttpClientDispatch {

    private static Auditor auditor = AuditServiceFactory.getAuditService().getAuditor(
            AuditConstants.DEFAULT_AUDITOR_NAME, AuditConstants.KNOX_SERVICE_NAME,
            AuditConstants.KNOX_COMPONENT_NAME);

    public HdfsDispatch() throws ServletException {
        super();
    }

    //@Override
    public void doPut(HttpServletRequest request, HttpServletResponse response)
            throws IOException, URISyntaxException {
        HttpEntity entity = createRequestEntity(request);
        URI requestUri = getDispatchUrl(request);

        auditor.audit(Action.DISPATCH, request.getRequestURI(), ResourceType.URI, ActionOutcome.UNAVAILABLE);
        if ("CREATE".equals(request.getParameter("op"))) {
            HttpPut clientRequest = new HttpPut(requestUri);
            HttpClient client = new DefaultHttpClient();
            HttpResponse clientResponse = client.execute(clientRequest);
            EntityUtils.consume(clientResponse.getEntity());
            if (clientResponse.getStatusLine().getStatusCode() == HttpStatus.TEMPORARY_REDIRECT_307) {
                Header locationHeader = clientResponse.getFirstHeader("Location");
                String location = locationHeader.getValue();
                clientRequest = new HttpPut(location);
                clientRequest.setEntity(entity);
                executeRequest(clientRequest, request, response);
            }
        } else {
            HttpPut clientRequest = new HttpPut(requestUri);
            if (entity.getContentLength() > 0) {
                clientRequest.setEntity(entity);
            }
            executeRequest(clientRequest, request, response);
        }
    }

}