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package org.apache.archiva.audit;
/*
* 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.
*/
import junit.framework.TestCase;
import org.apache.archiva.configuration.ManagedRepositoryConfiguration;
import org.apache.archiva.metadata.model.facets.AuditEvent;
import org.apache.archiva.metadata.repository.MetadataRepository;
import org.apache.archiva.test.utils.ArchivaBlockJUnit4ClassRunner;
import org.easymock.EasyMock;
import org.easymock.IMocksControl;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import java.text.DecimalFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Date;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.TimeZone;
@RunWith(ArchivaBlockJUnit4ClassRunner.class)
public class AuditManagerTest
extends TestCase
{
private DefaultAuditManager auditManager;
private IMocksControl metadataRepositoryControl;
private MetadataRepository metadataRepository;
private static final String AUDIT_EVENT_BASE = "2010/01/18/123456.";
private static final String TEST_REPO_ID = "test-repo";
private static final String TEST_REPO_ID_2 = "repo2";
private static final String TEST_USER = "test_user";
private static final String TEST_RESOURCE_BASE = "test/resource";
private static final String TEST_IP_ADDRESS = "127.0.0.1";
private static final SimpleDateFormat TIMESTAMP_FORMAT = createTimestampFormat();
private static final DecimalFormat MILLIS_FORMAT = new DecimalFormat( "000" );
private static SimpleDateFormat createTimestampFormat()
{
SimpleDateFormat fmt = new SimpleDateFormat( AuditEvent.TIMESTAMP_FORMAT );
fmt.setTimeZone( TimeZone.getTimeZone( "UTC" ) );
return fmt;
}
@Override
@Before
public void setUp()
throws Exception
{
super.setUp();
auditManager = new DefaultAuditManager();
metadataRepositoryControl = EasyMock.createControl();
metadataRepository = metadataRepositoryControl.createMock( MetadataRepository.class );
ManagedRepositoryConfiguration repository = new ManagedRepositoryConfiguration();
repository.setId( TEST_REPO_ID );
repository.setLocation( "" );
}
@Test
public void testGetMostRecentEvents()
throws Exception
{
int numEvents = 11;
List<AuditEvent> expectedEvents = new ArrayList<>( numEvents );
for ( int i = 0; i < numEvents; i++ )
{
AuditEvent event = createEvent( AUDIT_EVENT_BASE + MILLIS_FORMAT.format( i ) );
expectedEvents.add( event );
}
EasyMock.expect( metadataRepository.getMetadataFacets( TEST_REPO_ID, AuditEvent.FACET_ID ) ).andReturn(
getEventNames( expectedEvents ) );
for ( AuditEvent event : expectedEvents.subList( 1, expectedEvents.size() ) )
{
EasyMock.expect(
metadataRepository.getMetadataFacet( TEST_REPO_ID, AuditEvent.FACET_ID, event.getName() ) ).andReturn(
event );
}
metadataRepositoryControl.replay();
List<AuditEvent> events =
auditManager.getMostRecentAuditEvents( metadataRepository, Collections.singletonList( TEST_REPO_ID ) );
assertNotNull( events );
assertEquals( numEvents - 1, events.size() );
int expectedTimestampCounter = numEvents - 1;
for ( AuditEvent event : events )
{
String num = MILLIS_FORMAT.format( expectedTimestampCounter );
assertTestEvent( event, AUDIT_EVENT_BASE + num, getDefaultTestResourceName( num ) );
expectedTimestampCounter--;
}
metadataRepositoryControl.verify();
}
@Test
public void testGetMostRecentEventsLessThan10()
throws Exception
{
int numEvents = 5;
List<AuditEvent> expectedEvents = new ArrayList<>( numEvents );
for ( int i = 0; i < numEvents; i++ )
{
expectedEvents.add( createEvent( AUDIT_EVENT_BASE + MILLIS_FORMAT.format( i ) ) );
}
EasyMock.expect( metadataRepository.getMetadataFacets( TEST_REPO_ID, AuditEvent.FACET_ID ) ).andReturn(
getEventNames( expectedEvents ) );
for ( AuditEvent event : expectedEvents )
{
EasyMock.expect(
metadataRepository.getMetadataFacet( TEST_REPO_ID, AuditEvent.FACET_ID, event.getName() ) ).andReturn(
event );
}
metadataRepositoryControl.replay();
List<AuditEvent> events =
auditManager.getMostRecentAuditEvents( metadataRepository, Collections.singletonList( TEST_REPO_ID ) );
assertNotNull( events );
assertEquals( numEvents, events.size() );
int expectedTimestampCounter = numEvents - 1;
for ( AuditEvent event : events )
{
String num = MILLIS_FORMAT.format( expectedTimestampCounter );
assertTestEvent( event, AUDIT_EVENT_BASE + num, getDefaultTestResourceName( num ) );
expectedTimestampCounter--;
}
metadataRepositoryControl.verify();
}
@Test
public void testGetMostRecentEventsInterleavedRepositories()
throws Exception
{
int numEvents = 11;
Map<String, List<String>> eventNames = new LinkedHashMap<String, List<String>>();
List<AuditEvent> events = new ArrayList<>();
eventNames.put( TEST_REPO_ID, new ArrayList<String>() );
eventNames.put( TEST_REPO_ID_2, new ArrayList<String>() );
for ( int i = 0; i < numEvents; i++ )
{
String repositoryId = i % 2 == 0 ? TEST_REPO_ID : TEST_REPO_ID_2;
String num = MILLIS_FORMAT.format( i );
AuditEvent event = createEvent( repositoryId, AUDIT_EVENT_BASE + num, getDefaultTestResourceName( num ) );
events.add( event );
eventNames.get( repositoryId ).add( event.getName() );
}
EasyMock.expect( metadataRepository.getMetadataFacets( TEST_REPO_ID, AuditEvent.FACET_ID ) ).andReturn(
eventNames.get( TEST_REPO_ID ) );
EasyMock.expect( metadataRepository.getMetadataFacets( TEST_REPO_ID_2, AuditEvent.FACET_ID ) ).andReturn(
eventNames.get( TEST_REPO_ID_2 ) );
for ( AuditEvent event : events.subList( 1, events.size() ) )
{
EasyMock.expect( metadataRepository.getMetadataFacet( event.getRepositoryId(), AuditEvent.FACET_ID,
event.getName() ) ).andReturn( event );
}
metadataRepositoryControl.replay();
events =
auditManager.getMostRecentAuditEvents( metadataRepository, Arrays.asList( TEST_REPO_ID, TEST_REPO_ID_2 ) );
assertNotNull( events );
assertEquals( numEvents - 1, events.size() );
int expectedTimestampCounter = numEvents - 1;
for ( AuditEvent event : events )
{
String num = MILLIS_FORMAT.format( expectedTimestampCounter );
String expectedRepoId = expectedTimestampCounter % 2 == 0 ? TEST_REPO_ID : TEST_REPO_ID_2;
assertTestEvent( event, expectedRepoId, AUDIT_EVENT_BASE + num, getDefaultTestResourceName( num ) );
expectedTimestampCounter--;
}
metadataRepositoryControl.verify();
}
@Test
public void testGetMostRecentEventsWhenEmpty()
throws Exception
{
EasyMock.expect( metadataRepository.getMetadataFacets( TEST_REPO_ID, AuditEvent.FACET_ID ) ).andReturn(
Collections.<String>emptyList() );
metadataRepositoryControl.replay();
assertTrue( auditManager.getMostRecentAuditEvents( metadataRepository,
Collections.singletonList( TEST_REPO_ID ) ).isEmpty() );
metadataRepositoryControl.verify();
}
@Test
public void testAddAuditEvent()
throws Exception
{
AuditEvent event = createEvent( new Date() );
metadataRepository.addMetadataFacet( TEST_REPO_ID, event );
metadataRepositoryControl.replay();
auditManager.addAuditEvent( metadataRepository, event );
metadataRepositoryControl.verify();
}
@Test
public void testAddAuditEventNoRepositoryId()
throws Exception
{
AuditEvent event = createEvent( new Date() );
event.setRepositoryId( null );
// should just be ignored
metadataRepositoryControl.replay();
auditManager.addAuditEvent( metadataRepository, event );
metadataRepositoryControl.verify();
}
@Test
public void testDeleteStats()
throws Exception
{
metadataRepository.removeMetadataFacets( TEST_REPO_ID, AuditEvent.FACET_ID );
metadataRepositoryControl.replay();
auditManager.deleteAuditEvents( metadataRepository, TEST_REPO_ID );
metadataRepositoryControl.verify();
}
@Test
public void testGetEventsRangeInside()
throws Exception
{
Date current = new Date();
AuditEvent event1 = createEvent( new Date( current.getTime() - 12345 ) );
Date expectedTimestamp = new Date( current.getTime() - 3000 );
AuditEvent expectedEvent = createEvent( expectedTimestamp );
AuditEvent event3 = createEvent( new Date( current.getTime() - 1000 ) );
EasyMock.expect( metadataRepository.getMetadataFacets( TEST_REPO_ID, AuditEvent.FACET_ID ) ).andReturn(
Arrays.asList( event1.getName(), expectedEvent.getName(), event3.getName() ) );
// only match the middle one
EasyMock.expect( metadataRepository.getMetadataFacet( TEST_REPO_ID, AuditEvent.FACET_ID,
expectedEvent.getName() ) ).andReturn( expectedEvent );
metadataRepositoryControl.replay();
List<AuditEvent> events =
auditManager.getAuditEventsInRange( metadataRepository, Collections.singletonList( TEST_REPO_ID ),
new Date( current.getTime() - 4000 ),
new Date( current.getTime() - 2000 ) );
assertEquals( 1, events.size() );
assertTestEvent( events.get( 0 ), TIMESTAMP_FORMAT.format( expectedTimestamp ), expectedEvent.getResource() );
metadataRepositoryControl.verify();
}
@Test
public void testGetEventsRangeUpperOutside()
throws Exception
{
Date current = new Date();
AuditEvent event1 = createEvent( new Date( current.getTime() - 12345 ) );
Date expectedTimestamp = new Date( current.getTime() - 3000 );
AuditEvent expectedEvent2 = createEvent( expectedTimestamp );
Date ts3 = new Date( current.getTime() - 1000 );
AuditEvent expectedEvent3 = createEvent( ts3 );
EasyMock.expect( metadataRepository.getMetadataFacets( TEST_REPO_ID, AuditEvent.FACET_ID ) ).andReturn(
Arrays.asList( event1.getName(), expectedEvent2.getName(), expectedEvent3.getName() ) );
EasyMock.expect( metadataRepository.getMetadataFacet( TEST_REPO_ID, AuditEvent.FACET_ID,
expectedEvent2.getName() ) ).andReturn( expectedEvent2 );
EasyMock.expect( metadataRepository.getMetadataFacet( TEST_REPO_ID, AuditEvent.FACET_ID,
expectedEvent3.getName() ) ).andReturn( expectedEvent3 );
metadataRepositoryControl.replay();
List<AuditEvent> events =
auditManager.getAuditEventsInRange( metadataRepository, Collections.singletonList( TEST_REPO_ID ),
new Date( current.getTime() - 4000 ), current );
assertEquals( 2, events.size() );
assertTestEvent( events.get( 0 ), TIMESTAMP_FORMAT.format( ts3 ), expectedEvent3.getResource() );
assertTestEvent( events.get( 1 ), TIMESTAMP_FORMAT.format( expectedTimestamp ), expectedEvent2.getResource() );
metadataRepositoryControl.verify();
}
@Test
public void testGetEventsRangeLowerOutside()
throws Exception
{
Date current = new Date();
Date ts1 = new Date( current.getTime() - 12345 );
AuditEvent expectedEvent1 = createEvent( ts1 );
Date expectedTimestamp = new Date( current.getTime() - 3000 );
AuditEvent expectedEvent2 = createEvent( expectedTimestamp );
AuditEvent event3 = createEvent( new Date( current.getTime() - 1000 ) );
EasyMock.expect( metadataRepository.getMetadataFacets( TEST_REPO_ID, AuditEvent.FACET_ID ) ).andReturn(
Arrays.asList( expectedEvent1.getName(), expectedEvent2.getName(), event3.getName() ) );
EasyMock.expect( metadataRepository.getMetadataFacet( TEST_REPO_ID, AuditEvent.FACET_ID,
expectedEvent1.getName() ) ).andReturn( expectedEvent1 );
EasyMock.expect( metadataRepository.getMetadataFacet( TEST_REPO_ID, AuditEvent.FACET_ID,
expectedEvent2.getName() ) ).andReturn( expectedEvent2 );
metadataRepositoryControl.replay();
List<AuditEvent> events =
auditManager.getAuditEventsInRange( metadataRepository, Collections.singletonList( TEST_REPO_ID ),
new Date( current.getTime() - 20000 ),
new Date( current.getTime() - 2000 ) );
assertEquals( 2, events.size() );
assertTestEvent( events.get( 0 ), TIMESTAMP_FORMAT.format( expectedTimestamp ), expectedEvent2.getResource() );
assertTestEvent( events.get( 1 ), TIMESTAMP_FORMAT.format( ts1 ), expectedEvent1.getResource() );
metadataRepositoryControl.verify();
}
@Test
public void testGetEventsRangeLowerAndUpperOutside()
throws Exception
{
Date current = new Date();
Date ts1 = new Date( current.getTime() - 12345 );
AuditEvent expectedEvent1 = createEvent( ts1 );
Date expectedTimestamp = new Date( current.getTime() - 3000 );
AuditEvent expectedEvent2 = createEvent( expectedTimestamp );
Date ts3 = new Date( current.getTime() - 1000 );
AuditEvent expectedEvent3 = createEvent( ts3 );
EasyMock.expect( metadataRepository.getMetadataFacets( TEST_REPO_ID, AuditEvent.FACET_ID ) ).andReturn(
Arrays.asList( expectedEvent1.getName(), expectedEvent2.getName(), expectedEvent3.getName() ) );
EasyMock.expect( metadataRepository.getMetadataFacet( TEST_REPO_ID, AuditEvent.FACET_ID,
expectedEvent1.getName() ) ).andReturn( expectedEvent1 );
EasyMock.expect( metadataRepository.getMetadataFacet( TEST_REPO_ID, AuditEvent.FACET_ID,
expectedEvent2.getName() ) ).andReturn( expectedEvent2 );
EasyMock.expect( metadataRepository.getMetadataFacet( TEST_REPO_ID, AuditEvent.FACET_ID,
expectedEvent3.getName() ) ).andReturn( expectedEvent3 );
metadataRepositoryControl.replay();
List<AuditEvent> events =
auditManager.getAuditEventsInRange( metadataRepository, Collections.singletonList( TEST_REPO_ID ),
new Date( current.getTime() - 20000 ), current );
assertEquals( 3, events.size() );
assertTestEvent( events.get( 0 ), TIMESTAMP_FORMAT.format( ts3 ), expectedEvent3.getResource() );
assertTestEvent( events.get( 1 ), TIMESTAMP_FORMAT.format( expectedTimestamp ), expectedEvent2.getResource() );
assertTestEvent( events.get( 2 ), TIMESTAMP_FORMAT.format( ts1 ), expectedEvent1.getResource() );
metadataRepositoryControl.verify();
}
@Test
public void testGetEventsWithResource()
throws Exception
{
Date current = new Date();
Date ts1 = new Date( current.getTime() - 12345 );
AuditEvent expectedEvent1 = createEvent( ts1 );
Date expectedTimestamp = new Date( current.getTime() - 3000 );
AuditEvent expectedEvent2 = createEvent( expectedTimestamp );
expectedEvent2.setResource( "different-resource" );
Date ts3 = new Date( current.getTime() - 1000 );
AuditEvent expectedEvent3 = createEvent( ts3 );
EasyMock.expect( metadataRepository.getMetadataFacets( TEST_REPO_ID, AuditEvent.FACET_ID ) ).andReturn(
Arrays.asList( expectedEvent1.getName(), expectedEvent2.getName(), expectedEvent3.getName() ) );
EasyMock.expect( metadataRepository.getMetadataFacet( TEST_REPO_ID, AuditEvent.FACET_ID,
expectedEvent1.getName() ) ).andReturn( expectedEvent1 );
EasyMock.expect( metadataRepository.getMetadataFacet( TEST_REPO_ID, AuditEvent.FACET_ID,
expectedEvent2.getName() ) ).andReturn( expectedEvent2 );
EasyMock.expect( metadataRepository.getMetadataFacet( TEST_REPO_ID, AuditEvent.FACET_ID,
expectedEvent3.getName() ) ).andReturn( expectedEvent3 );
metadataRepositoryControl.replay();
List<AuditEvent> events =
auditManager.getAuditEventsInRange( metadataRepository, Collections.singletonList( TEST_REPO_ID ),
TEST_RESOURCE_BASE, new Date( current.getTime() - 20000 ), current );
assertEquals( 2, events.size() );
assertTestEvent( events.get( 0 ), TIMESTAMP_FORMAT.format( ts3 ), expectedEvent3.getResource() );
assertTestEvent( events.get( 1 ), TIMESTAMP_FORMAT.format( ts1 ), expectedEvent1.getResource() );
metadataRepositoryControl.verify();
}
@Test
public void testGetEventsWithNonExistantResource()
throws Exception
{
Date current = new Date();
AuditEvent expectedEvent1 = createEvent( new Date( current.getTime() - 12345 ) );
Date expectedTimestamp = new Date( current.getTime() - 3000 );
AuditEvent expectedEvent2 = createEvent( expectedTimestamp );
expectedEvent2.setResource( "different-resource" );
AuditEvent expectedEvent3 = createEvent( new Date( current.getTime() - 1000 ) );
EasyMock.expect( metadataRepository.getMetadataFacets( TEST_REPO_ID, AuditEvent.FACET_ID ) ).andReturn(
Arrays.asList( expectedEvent1.getName(), expectedEvent2.getName(), expectedEvent3.getName() ) );
EasyMock.expect( metadataRepository.getMetadataFacet( TEST_REPO_ID, AuditEvent.FACET_ID, expectedEvent1.getName() ) ).andReturn( expectedEvent1 );
EasyMock.expect( metadataRepository.getMetadataFacet( TEST_REPO_ID, AuditEvent.FACET_ID, expectedEvent2.getName() ) ).andReturn( expectedEvent2 );
EasyMock.expect( metadataRepository.getMetadataFacet( TEST_REPO_ID, AuditEvent.FACET_ID, expectedEvent3.getName() ) ).andReturn( expectedEvent3 );
metadataRepositoryControl.replay();
List<AuditEvent> events =
auditManager.getAuditEventsInRange( metadataRepository, Collections.singletonList( TEST_REPO_ID ), "foo",
new Date( current.getTime() - 20000 ), current );
assertEquals( 0, events.size() );
metadataRepositoryControl.verify();
}
@Test
public void testGetEventsRangeMultipleRepositories()
throws Exception
{
Date current = new Date();
Date ts1 = new Date( current.getTime() - 12345 );
AuditEvent expectedEvent1 = createEvent( ts1 );
Date expectedTimestamp = new Date( current.getTime() - 3000 );
AuditEvent expectedEvent2 = createEvent( expectedTimestamp );
expectedEvent2.setRepositoryId( TEST_REPO_ID_2 );
Date ts3 = new Date( current.getTime() - 1000 );
AuditEvent expectedEvent3 = createEvent( ts3 );
EasyMock.expect( metadataRepository.getMetadataFacets( TEST_REPO_ID, AuditEvent.FACET_ID ) )
.andReturn( Arrays.asList( expectedEvent1.getName(), expectedEvent3.getName() ) );
EasyMock.expect( metadataRepository.getMetadataFacets( TEST_REPO_ID_2, AuditEvent.FACET_ID ) )
.andReturn( Arrays.asList( expectedEvent2.getName() ) );
EasyMock.expect( metadataRepository.getMetadataFacet( TEST_REPO_ID, AuditEvent.FACET_ID, expectedEvent1.getName() ) )
.andReturn( expectedEvent1 );
EasyMock.expect( metadataRepository.getMetadataFacet( TEST_REPO_ID_2, AuditEvent.FACET_ID, expectedEvent2.getName() ) )
.andReturn( expectedEvent2 );
EasyMock.expect( metadataRepository.getMetadataFacet( TEST_REPO_ID, AuditEvent.FACET_ID, expectedEvent3.getName() ) )
.andReturn( expectedEvent3 );
metadataRepositoryControl.replay();
List<AuditEvent> events =
auditManager.getAuditEventsInRange( metadataRepository, Arrays.asList( TEST_REPO_ID, TEST_REPO_ID_2 ),
new Date( current.getTime() - 20000 ), current );
assertEquals( 3, events.size() );
assertTestEvent( events.get( 0 ), TEST_REPO_ID, TIMESTAMP_FORMAT.format( ts3 ), expectedEvent3.getResource() );
assertTestEvent( events.get( 1 ), TEST_REPO_ID_2, TIMESTAMP_FORMAT.format( expectedTimestamp ),
expectedEvent2.getResource() );
assertTestEvent( events.get( 2 ), TEST_REPO_ID, TIMESTAMP_FORMAT.format( ts1 ), expectedEvent1.getResource() );
metadataRepositoryControl.verify();
}
@Test
public void testGetEventsRangeNotInside()
throws Exception
{
Date current = new Date();
String name1 = createEvent( new Date( current.getTime() - 12345 ) ).getName();
Date expectedTimestamp = new Date( current.getTime() - 3000 );
String name2 = createEvent( expectedTimestamp ).getName();
String name3 = createEvent( new Date( current.getTime() - 1000 ) ).getName();
EasyMock.expect( metadataRepository.getMetadataFacets( TEST_REPO_ID, AuditEvent.FACET_ID ) )
.andReturn( Arrays.asList( name1, name2, name3 ) );
metadataRepositoryControl.replay();
List<AuditEvent> events =
auditManager.getAuditEventsInRange( metadataRepository, Collections.singletonList( TEST_REPO_ID ),
new Date( current.getTime() - 20000 ),
new Date( current.getTime() - 16000 ) );
assertEquals( 0, events.size() );
metadataRepositoryControl.verify();
}
private static String getDefaultTestResourceName( String num )
{
return TEST_RESOURCE_BASE + "/" + num + ".xml";
}
private static AuditEvent createEvent( Date timestamp )
throws ParseException
{
return createEvent( TIMESTAMP_FORMAT.format( timestamp ) );
}
private static AuditEvent createEvent( String ts )
throws ParseException
{
return createEvent( TEST_REPO_ID, ts, getDefaultTestResourceName(
ts.substring( AUDIT_EVENT_BASE.length(), AUDIT_EVENT_BASE.length() + 3 ) ) );
}
private static AuditEvent createEvent( String repositoryId, String timestamp, String resource )
throws ParseException
{
AuditEvent event = new AuditEvent();
event.setTimestamp( TIMESTAMP_FORMAT.parse( timestamp ) );
event.setAction( AuditEvent.UPLOAD_FILE );
event.setRemoteIP( TEST_IP_ADDRESS );
event.setRepositoryId( repositoryId );
event.setUserId( TEST_USER );
event.setResource( resource );
return event;
}
private static void assertTestEvent( AuditEvent event, String timestamp, String resource )
{
assertTestEvent( event, TEST_REPO_ID, timestamp, resource );
}
private static void assertTestEvent( AuditEvent event, String repositoryId, String timestamp, String resource )
{
assertEquals( timestamp, TIMESTAMP_FORMAT.format( event.getTimestamp() ) );
assertEquals( AuditEvent.UPLOAD_FILE, event.getAction() );
assertEquals( TEST_IP_ADDRESS, event.getRemoteIP() );
assertEquals( repositoryId, event.getRepositoryId() );
assertEquals( TEST_USER, event.getUserId() );
assertEquals( resource, event.getResource() );
}
private List<String> getEventNames( List<AuditEvent> events )
{
List<String> names = new ArrayList<>( events.size() );
for ( AuditEvent event : events )
{
names.add( event.getName() );
}
return names;
}
}