/*
Copyright (C) SYSTAP, LLC DBA Blazegraph 2006-2016. All rights reserved.
Contact:
SYSTAP, LLC DBA Blazegraph
2501 Calvert ST NW #106
Washington, DC 20008
licenses@blazegraph.com
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* Created on Mar 13, 2008
*/
package com.bigdata.counters;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Reader;
import java.util.Iterator;
import java.util.regex.Pattern;
import javax.xml.parsers.ParserConfigurationException;
import junit.framework.TestCase;
import org.xml.sax.SAXException;
import com.bigdata.counters.ICounterSet.IInstrumentFactory;
/**
* Unit tests for {@link CounterSet}.
*
* @author <a href="mailto:thompsonbry@users.sourceforge.net">Bryan Thompson</a>
* @version $Id$
*/
public class TestCounters extends TestCase {
/**
*
*/
public TestCounters() {
super();
}
/**
* @param arg0
*/
public TestCounters(String arg0) {
super(arg0);
}
public void test_ctor() {
CounterSet root = new CounterSet();
assertEquals("",root.getName());
assertEquals("/",root.getPath());
}
/**
* Tests of path construction.
*/
public void test_pathSemantics1() {
// root (name := "").
final CounterSet root = new CounterSet();
assertNull(root.getParent());
assertEquals("/",root.getPath());
assertEquals("",root.getName());
assertEquals(0,root.getDepth());
// make a child.
final CounterSet bigdata = root.makePath("www.bigdata.com");
assertNotNull(bigdata);
assertFalse(root == bigdata);
// verify parent.
assertTrue(root == bigdata.getParent());
assertEquals(1,bigdata.getDepth());
assertEquals("www.bigdata.com",bigdata.getName());
assertEquals("/www.bigdata.com",bigdata.getPath());
// make a child of a child using a relative path
final CounterSet memory = bigdata.makePath("memory");
assertTrue(bigdata == memory.getParent());
assertEquals(2,memory.getDepth());
assertEquals("memory",memory.getName());
assertEquals("/www.bigdata.com/memory",memory.getPath());
// make a child of a child using an absolute path.
final CounterSet disk = root.makePath("/www.bigdata.com/disk");
assertTrue(bigdata == disk.getParent());
assertEquals("disk",disk.getName());
assertEquals("/www.bigdata.com/disk",disk.getPath());
/*
* verify makePath recognizes existing nodes with absolute
* paths.
*/
assertTrue(root == root.makePath("/"));
assertTrue(bigdata == root.makePath("/www.bigdata.com"));
assertTrue(memory == root.makePath("/www.bigdata.com/memory"));
assertTrue(disk == root.makePath("/www.bigdata.com/disk"));
// illegal.
try {
root.makePath("");
fail("Expecting: " + IllegalArgumentException.class);
} catch (IllegalArgumentException ex) {
System.err.println("Ignoring expected exception: " + ex);
}
/*
* verify makePath recognizes existing nodes with relative
* paths.
*/
assertTrue(bigdata == root.makePath("www.bigdata.com"));
assertTrue(memory == root.makePath("www.bigdata.com/memory"));
assertTrue(memory == bigdata.makePath("memory"));
/*
* Test lookup with absolute paths.
*/
assertTrue(root == root.getPath("/"));
assertTrue(bigdata == root.getPath("/www.bigdata.com"));
assertTrue(memory == root.getPath("/www.bigdata.com/memory"));
/*
* Test lookup with relative paths.
*/
try {
root.getPath("");
fail("Expecting: " + IllegalArgumentException.class);
} catch (IllegalArgumentException ex) {
System.err.println("Ignoring expected exception: " + ex);
}
assertTrue(bigdata == root.getPath("www.bigdata.com"));
assertTrue(memory == root.getPath("www.bigdata.com/memory"));
assertTrue(memory == bigdata.getPath("memory"));
}
/**
* FIXME Test attach (aka move). Verify move of children when source is a
* root and otherwise move of the source itself. Verify detection of cycles
* (cycles indicate an illegal request).
*/
public void test_attach1() {
CounterSet root = new CounterSet();
CounterSet tmp = new CounterSet();
tmp.addCounter("foo", new Instrument<String>() {
public void sample() {
setValue("foo");
}
});
root.attach(tmp);
assertNotNull(root.getPath("foo"));
}
public void test_directCounters() {
CounterSet root = new CounterSet();
assertNull(root.getChild("a"));
{
ICounter tmp = root.addCounter("a", new Instrument<Double>() {
public void sample() {}
});
assertNotNull(root.getChild("a"));
assertEquals("a", tmp.getName());
assertEquals("/a", tmp.getPath());
}
// directly attached counter iterator.
{
Iterator<ICounter> itr = root.counterIterator(null/*filter*/);
assertTrue( itr.hasNext() );
ICounter c = itr.next();
assertEquals("a",c.getName());
assertEquals("/a",c.getPath());
assertFalse( itr.hasNext() );
}
// recursively attached counter iterator.
{
Iterator<ICounter> itr = root.getCounters(null/*filter*/);
assertTrue( itr.hasNext() );
ICounter c = itr.next();
assertEquals("a",c.getName());
assertEquals("/a",c.getPath());
assertFalse( itr.hasNext() );
}
root.addCounter("b", new Instrument<Double>() {
public void sample() {}
});
// test with pattern filter.
{
Iterator<ICounter> itr = root.getCounters(Pattern.compile("/a"));
assertTrue( itr.hasNext() );
ICounter c = itr.next();
assertEquals("a",c.getName());
assertEquals("/a",c.getPath());
assertFalse( itr.hasNext() );
}
// again.
{
Iterator<ICounter> itr = root.getCounters(Pattern.compile(".*b.*"));
assertTrue( itr.hasNext() );
ICounter c = itr.next();
assertEquals("b",c.getName());
assertEquals("/b",c.getPath());
assertFalse( itr.hasNext() );
}
}
/**
*
*/
public void test_children() {
final CounterSet root = new CounterSet();
assertNull(root.getChild("cpu"));
final CounterSet cpu = root.makePath("cpu");
assertNotNull(root.getChild("cpu"));
cpu.addCounter("a", new Instrument<Double>() {
public void sample() {}
});
assertNotNull(cpu.getChild("a"));
assertNotNull(cpu.getPath("a"));
assertNotNull(root.getPath("/cpu/a"));
// directly attached counter set iterator.
{
Iterator<ICounterSet> itr = root.counterSetIterator();
assertTrue( itr.hasNext() );
ICounterSet tmp = itr.next();
assertEquals("cpu",tmp.getName());
assertEquals("/cpu",tmp.getPath());
assertFalse( itr.hasNext() );
}
// recursively attached counter iterator.
{
Iterator<ICounter> itr = root.getCounters(null/*filter*/);
assertTrue( itr.hasNext() );
ICounter c = itr.next();
assertEquals("a",c.getName());
assertEquals("/cpu/a",c.getPath());
assertFalse( itr.hasNext() );
}
}
/**
* Test that empty path components are not allowed.
*/
public void test_emptyPathComponentsNotAllowed() {
final CounterSet countersRoot = new CounterSet();
final String badpath = ICounterSet.pathSeparator
+ ICounterSet.pathSeparator + "foo";
try {
countersRoot.makePath(badpath);
fail("Expecting: " + IllegalArgumentException.class);
} catch (IllegalArgumentException ex) {
System.err.println("Ignoring expected exception: " + ex);
}
try {
countersRoot.getPath(badpath);
fail("Expecting: " + IllegalArgumentException.class);
} catch (IllegalArgumentException ex) {
System.err.println("Ignoring expected exception: " + ex);
}
}
/**
* Test of XML (de-)serialization.
*
* @throws IOException
* @throws SAXException
* @throws ParserConfigurationException
*/
public void test_xml() throws IOException, ParserConfigurationException, SAXException {
final CounterSet root = new CounterSet();
final ICounter elapsed = root.addCounter("elapsed", new Instrument<Long>() {
public void sample(){
setValue(System.currentTimeMillis());
}
});
final CounterSet cpu = root.makePath("www.bigdata.com/cpu");
final ICounter availableProcessors = cpu.addCounter("availableProcessors", new Instrument<Integer>() {
public void sample(){
setValue(Runtime.getRuntime().availableProcessors());
}
});
final CounterSet memory = root.makePath("www.bigdata.com/memory");
final ICounter maxMemory = memory.addCounter("maxMemory", new Instrument<Long>() {
public void sample(){
setValue(Runtime.getRuntime().maxMemory());
}
});
CounterSet disk = root.makePath("www.bigdata.com/disk");
ByteArrayOutputStream baos = new ByteArrayOutputStream();
// write out as XML.
root.asXML(baos, "UTF-8", null/*filter*/);
byte[] data = baos.toByteArray();
Reader r = new InputStreamReader(new ByteArrayInputStream(data),"UTF-8");
StringBuilder sb = new StringBuilder();
while(true) {
int ch = r.read();
if(ch==-1) break;
sb.append((char)ch);
}
System.err.println(sb.toString());
{
CounterSet tmp = new CounterSet();
IInstrumentFactory instrumentFactory = new IInstrumentFactory() {
public IInstrument newInstance(Class type) {
if (type == Double.class) {
return new Instrument<Double>() {
protected void sample() {
}
};
} else if (type == Long.class) {
return new Instrument<Long>() {
protected void sample() {
}
};
} else {
throw new UnsupportedOperationException("type=" + type);
}
}
};
Pattern filter = null;
tmp.readXML(new ByteArrayInputStream(data), instrumentFactory, filter);
System.err.println("Read back:\n"+tmp.toString());
/*
* verify the counters that we had declared.
*
* Note: This is a mess - I have to tunnel in to do the comparisons.
*
* @todo also vet the other counters.
*
* @todo mock up a history counter and vet its de-serialization from
* XML.
*/
assertNotNull(tmp.getPath(availableProcessors.getPath()));
assertEquals(availableProcessors.lastModified(), ((ICounter) tmp
.getPath(availableProcessors.getPath())).lastModified());
assertEquals(//
((Integer)((Instrument) availableProcessors.getInstrument())
.getCurrentValue()).intValue(),//
((Long)((Instrument) ((ICounter) tmp
.getPath(availableProcessors.getPath()))
.getInstrument()).getCurrentValue()).intValue());
}
}
}