<%
/*
* 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.
*/
%>
<%@ page import = "javax.servlet.http.*" %>
<%@ page import = "java.sql.*" %>
<%@ page import = "java.io.*" %>
<%@ page import = "java.util.Calendar" %>
<%@ page import = "java.util.Date" %>
<%@ page import = "java.text.SimpleDateFormat" %>
<%@ page import = "java.util.*" %>
<%@ page import = "org.json.*" %>
<%@ page import = "org.apache.hadoop.chukwa.database.Macro" %>
<%@ page import = "org.apache.hadoop.chukwa.hicc.ClusterConfig" %>
<%@ page import = "org.apache.hadoop.chukwa.hicc.TimeHandler" %>
<%@ page import = "org.apache.hadoop.chukwa.util.DatabaseWriter" %>
<%@ page import = "org.apache.hadoop.chukwa.util.XssFilter" %>
<% XssFilter xf = new XssFilter(request);
String boxId = xf.getParameter("boxId");
response.setHeader("boxId", xf.getParameter("boxId"));
TimeHandler time = new TimeHandler(request, (String)session.getAttribute("time_zone"));
long start = time.getStartTime();
long end = time.getEndTime();
String cluster = (String) session.getAttribute("cluster");
boolean first = false;
String[] types = {"namenode","datanode","jobtracker","tasktracker"};
String[] queries = {"select distinct host from [dfs_namenode] where timestamp between '[start]' and '[end]'",
"select distinct host from [hadoop_jvm] where process_name='datanode' and timestamp between '[start]' and '[end]'",
"select distinct host from [hadoop_jvm] where process_name='jobtracker' and timestamp between '[start]' and '[end]'",
"select distinct host from [hadoop_jvm] where process_name='tasktracker' and timestamp between '[start]' and '[end]'"};
int i = 0;
StringBuffer hosts = new StringBuffer();
JSONObject roles = new JSONObject();
for(String type : types) {
if(xf.getParameter(type)!=null) {
Macro mp = new Macro(start, end, queries[i]);
String query = mp.toString();
DatabaseWriter db = new DatabaseWriter(cluster);
try {
ResultSet rs = db.query(query);
while(rs.next()) {
if(!first) {
hosts.append(",");
}
hosts.append(rs.getString(1));
first=false;
}
roles.put(type,"checked");
} catch(SQLException ex) {
System.out.println("SQLException "+ ex + " on query " + query);
// Ignore if there is no data for the cluster.
} finally {
db.close();
}
} else {
roles.put(type,"");
}
i++;
}
if(xf.getParameter("save")!=null) {
session.setAttribute("hosts",hosts.toString());
session.setAttribute("host.selector.role",roles.toString());
} else {
if(session.getAttribute("host.selector.role")!=null) {
roles = new JSONObject(session.getAttribute("host.selector.role").toString());
}
}
%>
HDFS Cluster
> Name Nodes
> Data Nodes