org.apache.hadoop.hbase.TestInfoServers.java Source code

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Here is the source code for org.apache.hadoop.hbase.TestInfoServers.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.hbase;

import static org.junit.Assert.assertTrue;

import java.io.BufferedInputStream;
import java.io.IOException;
import java.net.URL;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.hbase.client.HTable;
import org.apache.hadoop.hbase.util.Bytes;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.experimental.categories.Category;

/**
 * Testing, info servers are disabled.  This test enables then and checks that
 * they serve pages.
 */
@Category(MediumTests.class)
public class TestInfoServers {
    static final Log LOG = LogFactory.getLog(TestInfoServers.class);
    private final static HBaseTestingUtility UTIL = new HBaseTestingUtility();

    @BeforeClass
    public static void beforeClass() throws Exception {
        // The info servers do not run in tests by default.
        // Set them to ephemeral ports so they will start
        UTIL.getConfiguration().setInt(HConstants.MASTER_INFO_PORT, 0);
        UTIL.getConfiguration().setInt(HConstants.REGIONSERVER_INFO_PORT, 0);

        //We need to make sure that the server can be started as read only.
        UTIL.getConfiguration().setBoolean("hbase.master.ui.readonly", true);
        UTIL.startMiniCluster();
    }

    @AfterClass
    public static void afterClass() throws Exception {
        UTIL.shutdownMiniCluster();
    }

    /**
     * @throws Exception
     */
    @Test
    public void testInfoServersRedirect() throws Exception {
        // give the cluster time to start up
        new HTable(UTIL.getConfiguration(), TableName.META_TABLE_NAME).close();
        int port = UTIL.getHBaseCluster().getMaster().getInfoServer().getPort();
        assertContainsContent(new URL("http://localhost:" + port + "/index.html"), "master-status");
        port = UTIL.getHBaseCluster().getRegionServerThreads().get(0).getRegionServer().getInfoServer().getPort();
        assertContainsContent(new URL("http://localhost:" + port + "/index.html"), "rs-status");
    }

    /**
     * Test that the status pages in the minicluster load properly.
     *
     * This is somewhat a duplicate of TestRSStatusServlet and
     * TestMasterStatusServlet, but those are true unit tests
     * whereas this uses a cluster.
     */
    @Test
    public void testInfoServersStatusPages() throws Exception {
        // give the cluster time to start up
        new HTable(UTIL.getConfiguration(), TableName.META_TABLE_NAME).close();
        int port = UTIL.getHBaseCluster().getMaster().getInfoServer().getPort();
        assertContainsContent(new URL("http://localhost:" + port + "/master-status"), "meta");
        port = UTIL.getHBaseCluster().getRegionServerThreads().get(0).getRegionServer().getInfoServer().getPort();
        assertContainsContent(new URL("http://localhost:" + port + "/rs-status"), "meta");
    }

    @Test
    public void testMasterServerReadOnly() throws Exception {
        String sTableName = "testMasterServerReadOnly";
        byte[] tableName = Bytes.toBytes(sTableName);
        byte[] cf = Bytes.toBytes("d");
        UTIL.createTable(tableName, cf);
        new HTable(UTIL.getConfiguration(), tableName).close();
        int port = UTIL.getHBaseCluster().getMaster().getInfoServer().getPort();
        assertDoesNotContainContent(
                new URL("http://localhost:" + port + "/table.jsp?name=" + sTableName + "&action=split&key="),
                "Table action request accepted");
        assertDoesNotContainContent(new URL("http://localhost:" + port + "/table.jsp?name=" + sTableName),
                "Actions:");
    }

    private void assertContainsContent(final URL u, final String expected) throws IOException {
        LOG.info("Testing " + u.toString() + " has " + expected);
        String content = getUrlContent(u);
        assertTrue("expected=" + expected + ", content=" + content, content.contains(expected));
    }

    private void assertDoesNotContainContent(final URL u, final String expected) throws IOException {
        LOG.info("Testing " + u.toString() + " has " + expected);
        String content = getUrlContent(u);
        assertTrue("Does Not Contain =" + expected + ", content=" + content, !content.contains(expected));
    }

    private String getUrlContent(URL u) throws IOException {
        java.net.URLConnection c = u.openConnection();
        c.connect();
        StringBuilder sb = new StringBuilder();
        BufferedInputStream bis = new BufferedInputStream(c.getInputStream());
        byte[] bytes = new byte[1024];
        for (int read = -1; (read = bis.read(bytes)) != -1;) {
            sb.append(new String(bytes, 0, read));
        }
        bis.close();
        return sb.toString();
    }
}