/**
* This file is part of Graylog2.
*
* Graylog2 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, either version 3 of the License, or
* (at your option) any later version.
*
* Graylog2 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 Graylog2. If not, see <http://www.gnu.org/licenses/>.
*/
package org.graylog2.buffers.processors;
import com.codahale.metrics.MetricRegistry;
import com.google.common.collect.Sets;
import org.graylog2.Configuration;
import org.graylog2.buffers.OutputBuffer;
import org.graylog2.plugin.Message;
import org.graylog2.plugin.Tools;
import org.graylog2.plugin.filters.MessageFilter;
import org.graylog2.plugin.inputs.MessageInput;
import org.mockito.Matchers;
import org.testng.annotations.Test;
import java.util.List;
import java.util.Set;
import java.util.concurrent.atomic.AtomicInteger;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.same;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertFalse;
import static org.testng.Assert.assertTrue;
import static org.testng.Assert.fail;
public class ServerProcessBufferProcessorTest {
@Test
public void testFiltersAreOrdered() {
final DummyFilter third = new DummyFilter(30);
final DummyFilter first = new DummyFilter(10);
final DummyFilter second = new DummyFilter(20);
Set<MessageFilter> filters = Sets.<MessageFilter>newHashSet(
third,
first,
second);
final ServerProcessBufferProcessor processor = new ServerProcessBufferProcessor(mock(
MetricRegistry.class), filters, mock(Configuration.class), new AtomicInteger(), 0, 1, mock(OutputBuffer.class));
final List<MessageFilter> filterRegistry = processor.getFilterRegistry();
assertEquals(filterRegistry.get(0), first);
assertEquals(filterRegistry.get(1), second);
assertEquals(filterRegistry.get(2), third);
}
@Test
public void testHandleMessageEmptyFilterSet() throws Exception {
MetricRegistry metricRegistry = mock(MetricRegistry.class);
AtomicInteger processBufferWatermark = new AtomicInteger();
OutputBuffer outputBuffer = mock(OutputBuffer.class);
final Configuration configuration = mock(Configuration.class);
when(configuration.isDisableOutputCache()).thenReturn(false);
final ServerProcessBufferProcessor emptyFilters =
new ServerProcessBufferProcessor(metricRegistry,
Sets.<MessageFilter>newHashSet(),
configuration,
processBufferWatermark, 0, 1,
outputBuffer);
try {
emptyFilters.handleMessage(new Message("test", "source", Tools.iso8601()));
fail("A processor with empty filter set should throw an exception");
} catch (RuntimeException ignored) {}
}
@Test
public void testHandleMessage() {
MetricRegistry metricRegistry = new MetricRegistry();
AtomicInteger processBufferWatermark = new AtomicInteger();
OutputBuffer outputBuffer = mock(OutputBuffer.class);
final Configuration configuration = mock(Configuration.class);
when(configuration.isDisableOutputCache()).thenReturn(false);
MessageFilter filterOnlyFirst = new MessageFilter() {
private boolean filterOut = true;
@Override
public boolean filter(Message msg) {
if (filterOut) {
msg.setFilterOut(true);
filterOut = false;
return true;
}
return false;
}
@Override
public String getName() {
return "first filtered out, subsequent pass";
}
@Override
public int getPriority() {
return 0;
}
};
final ServerProcessBufferProcessor filterTest =
new ServerProcessBufferProcessor(metricRegistry,
Sets.newHashSet(filterOnlyFirst),
configuration,
processBufferWatermark, 0, 1,
outputBuffer);
try {
Message filteredoutMessage = new Message("filtered out", "source", Tools.iso8601());
Message unfilteredMessage = new Message("filtered out", "source", Tools.iso8601());
filterTest.handleMessage(filteredoutMessage);
filterTest.handleMessage(unfilteredMessage);
verify(outputBuffer, times(0)).insertCached(same(filteredoutMessage), Matchers.<MessageInput>anyObject());
verify(outputBuffer, times(1)).insertCached(same(unfilteredMessage), Matchers.<MessageInput>anyObject());
assertTrue(filteredoutMessage.getFilterOut());
assertFalse(unfilteredMessage.getFilterOut());
} catch (RuntimeException e) {
fail("This test should not throw exceptions", e);
}
}
private class DummyFilter implements MessageFilter {
private final int prio;
private DummyFilter(int prio) {
this.prio = prio;
}
@Override
public boolean filter(Message msg) {
return false;
}
@Override
public String getName() {
return "filter prio " + prio;
}
@Override
public int getPriority() {
return prio;
}
}
}