org.apache.hadoop.hdfs.web.WebHdfsTestUtil.java Source code

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Here is the source code for org.apache.hadoop.hdfs.web.WebHdfsTestUtil.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.hdfs.web;

import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.security.PrivilegedExceptionAction;
import java.util.Map;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FSDataOutputStream;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hdfs.web.resources.HttpOpParam;
import org.apache.hadoop.hdfs.web.resources.Param;
import org.apache.hadoop.security.UserGroupInformation;
import org.junit.Assert;

public class WebHdfsTestUtil {
    public static final Log LOG = LogFactory.getLog(WebHdfsTestUtil.class);

    public static WebHdfsFileSystem getWebHdfsFileSystem(final Configuration conf)
            throws IOException, URISyntaxException {
        final String uri = WebHdfsFileSystem.SCHEME + "://" + conf.get("dfs.http.address");
        return (WebHdfsFileSystem) FileSystem.get(new URI(uri), conf);
    }

    public static WebHdfsFileSystem getWebHdfsFileSystemAs(final UserGroupInformation ugi, final Configuration conf)
            throws IOException, URISyntaxException, InterruptedException {
        return ugi.doAs(new PrivilegedExceptionAction<WebHdfsFileSystem>() {
            @Override
            public WebHdfsFileSystem run() throws Exception {
                return getWebHdfsFileSystem(conf);
            }
        });
    }

    public static URL toUrl(final WebHdfsFileSystem webhdfs, final HttpOpParam.Op op, final Path fspath,
            final Param<?, ?>... parameters) throws IOException {
        final URL url = webhdfs.toUrl(op, fspath, parameters);
        WebHdfsTestUtil.LOG.info("url=" + url);
        return url;
    }

    public static Map<?, ?> connectAndGetJson(final HttpURLConnection conn, final int expectedResponseCode)
            throws IOException {
        conn.connect();
        Assert.assertEquals(expectedResponseCode, conn.getResponseCode());
        return WebHdfsFileSystem.jsonParse(conn.getInputStream());
    }

    public static HttpURLConnection twoStepWrite(HttpURLConnection conn, final HttpOpParam.Op op)
            throws IOException {
        conn.setRequestMethod(op.getType().toString());
        conn = WebHdfsFileSystem.twoStepWrite(conn, op);
        conn.setDoOutput(true);
        conn.connect();
        return conn;
    }

    public static FSDataOutputStream write(final WebHdfsFileSystem webhdfs, final HttpOpParam.Op op,
            final HttpURLConnection conn, final int bufferSize) throws IOException {
        return webhdfs.write(op, conn, bufferSize);
    }
}