co.cask.cdap.client.rest.handlers.StreamHttpRequestHandler.java Source code

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Here is the source code for co.cask.cdap.client.rest.handlers.StreamHttpRequestHandler.java

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/*
 * Copyright  2014 Cask Data, Inc.
 *
 * 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 co.cask.cdap.client.rest.handlers;

import co.cask.cdap.client.rest.RestClient;
import co.cask.cdap.client.rest.RestTest;
import co.cask.cdap.client.rest.TestUtils;
import org.apache.commons.lang.StringUtils;
import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.HttpException;
import org.apache.http.HttpRequest;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.RequestLine;
import org.apache.http.message.BasicHttpEntityEnclosingRequest;
import org.apache.http.protocol.HttpContext;
import org.apache.http.protocol.HttpRequestHandler;

import java.io.IOException;
import javax.ws.rs.HttpMethod;

/**
 * The http request handler implementation to test client's requests to the REST Stream API.
 */
public class StreamHttpRequestHandler implements HttpRequestHandler {
    @Override
    public void handle(HttpRequest httpRequest, HttpResponse response, HttpContext httpContext)
            throws HttpException, IOException {

        RequestLine requestLine = httpRequest.getRequestLine();
        String method = requestLine.getMethod();
        int statusCode;
        String uri = requestLine.getUri();
        String streamName = TestUtils.getStreamNameFromUri(uri + "/");
        if (HttpMethod.PUT.equals(method)) {
            if (TestUtils.AUTH_STREAM_NAME.equals(streamName)) {
                statusCode = TestUtils.authorize(httpRequest);
            } else {
                statusCode = TestUtils.getStatusCodeByStreamName(streamName);
            }
        } else if (HttpMethod.POST.equals(method)) {
            String fullStreamName = streamName;
            streamName = streamName.replace(TestUtils.WRITER_TEST_STREAM_NAME_POSTFIX, StringUtils.EMPTY);
            if (TestUtils.AUTH_STREAM_NAME.equals(streamName)) {
                statusCode = TestUtils.authorize(httpRequest);
            } else if (TestUtils.WITH_CUSTOM_HEADER_STREAM_NAME.endsWith(streamName)) {
                Header testHeader = httpRequest.getFirstHeader(fullStreamName + "." + RestTest.TEST_HEADER_NAME);
                if (testHeader != null && RestTest.TEST_HEADER_VALUE.equals(testHeader.getValue())) {
                    statusCode = HttpStatus.SC_OK;
                } else {
                    statusCode = HttpStatus.SC_BAD_REQUEST;
                }
            } else {
                statusCode = TestUtils.getStatusCodeByStreamName(streamName);
            }
            if (HttpStatus.SC_OK == statusCode && !TestUtils.FILE_STREAM_NAME.equals(streamName)) {
                //check request content
                BasicHttpEntityEnclosingRequest request = (BasicHttpEntityEnclosingRequest) httpRequest;
                HttpEntity requestEntity = request.getEntity();
                if (requestEntity != null) {
                    String content = RestClient.toString(requestEntity);
                    if (!RestTest.EXPECTED_WRITER_CONTENT.equals(content)
                            && !TestUtils.ALLOW_ANY_EVENT_STREAM.equals(streamName)) {
                        statusCode = HttpStatus.SC_INTERNAL_SERVER_ERROR;
                    }
                } else {
                    statusCode = HttpStatus.SC_BAD_REQUEST;
                }
            }
        } else {
            statusCode = HttpStatus.SC_NOT_IMPLEMENTED;
        }
        response.setStatusCode(statusCode);
    }
}