/*
* 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.accumulo.monitor.servlets;
import java.text.SimpleDateFormat;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.accumulo.core.gc.thrift.GCStatus;
import org.apache.accumulo.monitor.Monitor;
import org.apache.accumulo.monitor.util.Table;
import org.apache.accumulo.monitor.util.celltypes.DateTimeType;
import org.apache.accumulo.monitor.util.celltypes.DurationType;
import org.apache.accumulo.monitor.util.celltypes.NumberType;
public class GcStatusServlet extends BasicServlet {
private static final long serialVersionUID = 1L;
@Override
protected String getTitle(HttpServletRequest req) {
return "Garbage Collector Status";
}
@Override
protected void pageBody(HttpServletRequest req, HttpServletResponse resp, StringBuilder sb) {
GCStatus status = Monitor.getGcStatus();
if (status != null) {
Table gcActivity = new Table("gcActivity", "Collection Activity");
gcActivity.addSortableColumn("Activity");
gcActivity.addSortableColumn("Finished", new DateTimeType(new SimpleDateFormat("MMM dd, yyyy kk:mm")), null);
gcActivity.addSortableColumn("Candidates", new NumberType<Long>(), null);
gcActivity.addSortableColumn("Deleted", new NumberType<Long>(), null);
gcActivity.addSortableColumn("In Use", new NumberType<Long>(), null);
gcActivity.addSortableColumn("Errors", new NumberType<Long>(0l, 1l), null);
gcActivity.addSortableColumn("Duration", new DurationType(), null);
if (status.last.finished > 0)
gcActivity.addRow("File Collection, Last Cycle", status.last.finished, status.last.candidates, status.last.deleted, status.last.inUse,
status.last.errors, status.last.finished - status.last.started);
if (status.current.started > 0)
gcActivity.addRow("File Collection, Running", status.current.finished, status.current.candidates, status.current.deleted,
status.current.inUse, status.current.errors, System.currentTimeMillis() - status.current.started);
if (status.lastLog.finished > 0)
gcActivity.addRow("WAL Collection, Last Cycle", status.lastLog.finished, status.lastLog.candidates, status.lastLog.deleted,
status.lastLog.inUse, status.lastLog.errors, status.lastLog.finished - status.lastLog.started);
if (status.currentLog.started > 0)
gcActivity.addRow("WAL Collection, Running", status.currentLog.finished, status.currentLog.candidates, status.currentLog.deleted,
status.currentLog.inUse, status.currentLog.errors, System.currentTimeMillis() - status.currentLog.started);
gcActivity.generate(req, sb);
} else {
banner(sb, "error", "Collector is Unavailable");
}
}
}