/*
* 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.flume.interceptor;
import com.google.common.collect.ImmutableMap;
import junit.framework.Assert;
import org.apache.flume.Context;
import org.apache.flume.Event;
import org.apache.flume.event.EventBuilder;
import org.junit.Test;
import java.util.HashMap;
import java.util.Map;
import java.util.regex.PatternSyntaxException;
public class RemoveHeaderInterceptorTest {
private static final String HEADER1 = "my-header10";
private static final String HEADER2 = "my-header11";
private static final String HEADER3 = "my-header12";
private static final String HEADER4 = "my-header20";
private static final String HEADER5 = "my-header21";
private static final String DEFAULT_SEPARATOR = ", ";
private static final String MY_SEPARATOR = ";";
private Event buildEventWithHeader() {
return EventBuilder.withBody("My test event".getBytes(), ImmutableMap.of(
HEADER1, HEADER1, HEADER2, HEADER2, HEADER3, HEADER3, HEADER4, HEADER4,
HEADER5, HEADER5));
}
private Event buildEventWithoutHeader() {
return EventBuilder.withBody("My test event".getBytes());
}
@Test(expected = PatternSyntaxException.class)
public void testBadConfig() throws Exception {
new RemoveHeaderIntBuilder().fromList(HEADER1, "(").build();
}
@Test
public void testWithName() throws IllegalAccessException, ClassNotFoundException,
InstantiationException {
final Interceptor removeHeaderInterceptor = new RemoveHeaderIntBuilder()
.withName(HEADER4).build();
final Event event1 = buildEventWithHeader();
Assert.assertEquals(HEADER1, event1.getHeaders().get(HEADER1));
Assert.assertEquals(HEADER2, event1.getHeaders().get(HEADER2));
Assert.assertEquals(HEADER3, event1.getHeaders().get(HEADER3));
Assert.assertEquals(HEADER4, event1.getHeaders().get(HEADER4));
Assert.assertEquals(HEADER5, event1.getHeaders().get(HEADER5));
removeHeaderInterceptor.intercept(event1);
Assert.assertEquals(HEADER1, event1.getHeaders().get(HEADER1));
Assert.assertEquals(HEADER2, event1.getHeaders().get(HEADER2));
Assert.assertEquals(HEADER3, event1.getHeaders().get(HEADER3));
Assert.assertNull(event1.getHeaders().get(HEADER4));
Assert.assertEquals(HEADER5, event1.getHeaders().get(HEADER5));
final Event event2 = buildEventWithoutHeader();
Assert.assertTrue(event2.getHeaders().isEmpty());
removeHeaderInterceptor.intercept(event2);
Assert.assertTrue(event2.getHeaders().isEmpty());
}
@Test
public void testFromListWithDefaultSeparator1() throws Exception {
final Interceptor removeHeaderInterceptor = new RemoveHeaderIntBuilder()
.fromList(HEADER4 + MY_SEPARATOR + HEADER2).build();
final Event event1 = buildEventWithHeader();
Assert.assertEquals(HEADER1, event1.getHeaders().get(HEADER1));
Assert.assertEquals(HEADER2, event1.getHeaders().get(HEADER2));
Assert.assertEquals(HEADER3, event1.getHeaders().get(HEADER3));
Assert.assertEquals(HEADER4, event1.getHeaders().get(HEADER4));
Assert.assertEquals(HEADER5, event1.getHeaders().get(HEADER5));
removeHeaderInterceptor.intercept(event1);
Assert.assertEquals(HEADER1, event1.getHeaders().get(HEADER1));
Assert.assertEquals(HEADER2, event1.getHeaders().get(HEADER2));
Assert.assertEquals(HEADER3, event1.getHeaders().get(HEADER3));
Assert.assertEquals(HEADER4, event1.getHeaders().get(HEADER4));
Assert.assertEquals(HEADER5, event1.getHeaders().get(HEADER5));
final Event event2 = buildEventWithoutHeader();
Assert.assertTrue(event2.getHeaders().isEmpty());
removeHeaderInterceptor.intercept(event2);
Assert.assertTrue(event2.getHeaders().isEmpty());
}
@Test
public void testFromListWithDefaultSeparator2() throws Exception {
final Interceptor removeHeaderInterceptor = new RemoveHeaderIntBuilder()
.fromList(HEADER4 + DEFAULT_SEPARATOR + HEADER2).build();
final Event event1 = buildEventWithHeader();
Assert.assertEquals(HEADER1, event1.getHeaders().get(HEADER1));
Assert.assertEquals(HEADER2, event1.getHeaders().get(HEADER2));
Assert.assertEquals(HEADER3, event1.getHeaders().get(HEADER3));
Assert.assertEquals(HEADER4, event1.getHeaders().get(HEADER4));
Assert.assertEquals(HEADER5, event1.getHeaders().get(HEADER5));
removeHeaderInterceptor.intercept(event1);
Assert.assertEquals(HEADER1, event1.getHeaders().get(HEADER1));
Assert.assertNull(event1.getHeaders().get(HEADER2));
Assert.assertEquals(HEADER3, event1.getHeaders().get(HEADER3));
Assert.assertNull(event1.getHeaders().get(HEADER4));
Assert.assertEquals(HEADER5, event1.getHeaders().get(HEADER5));
final Event event2 = buildEventWithoutHeader();
Assert.assertTrue(event2.getHeaders().isEmpty());
removeHeaderInterceptor.intercept(event2);
Assert.assertTrue(event2.getHeaders().isEmpty());
}
@Test
public void testFromListWithCustomSeparator1() throws Exception {
final Interceptor removeHeaderInterceptor = new RemoveHeaderIntBuilder()
.fromList(HEADER4 + MY_SEPARATOR + HEADER2, MY_SEPARATOR).build();
final Event event1 = buildEventWithHeader();
Assert.assertEquals(HEADER1, event1.getHeaders().get(HEADER1));
Assert.assertEquals(HEADER2, event1.getHeaders().get(HEADER2));
Assert.assertEquals(HEADER3, event1.getHeaders().get(HEADER3));
Assert.assertEquals(HEADER4, event1.getHeaders().get(HEADER4));
Assert.assertEquals(HEADER5, event1.getHeaders().get(HEADER5));
removeHeaderInterceptor.intercept(event1);
Assert.assertEquals(HEADER1, event1.getHeaders().get(HEADER1));
Assert.assertNull(event1.getHeaders().get(HEADER2));
Assert.assertEquals(HEADER3, event1.getHeaders().get(HEADER3));
Assert.assertNull(event1.getHeaders().get(HEADER4));
Assert.assertEquals(HEADER5, event1.getHeaders().get(HEADER5));
final Event event2 = buildEventWithoutHeader();
Assert.assertTrue(event2.getHeaders().isEmpty());
removeHeaderInterceptor.intercept(event2);
Assert.assertTrue(event2.getHeaders().isEmpty());
}
@Test
public void testFromListWithCustomSeparator2() throws Exception {
final Interceptor removeHeaderInterceptor = new RemoveHeaderIntBuilder()
.fromList(HEADER4 + DEFAULT_SEPARATOR + HEADER2, MY_SEPARATOR).build();
final Event event1 = buildEventWithHeader();
Assert.assertEquals(HEADER1, event1.getHeaders().get(HEADER1));
Assert.assertEquals(HEADER2, event1.getHeaders().get(HEADER2));
Assert.assertEquals(HEADER3, event1.getHeaders().get(HEADER3));
Assert.assertEquals(HEADER4, event1.getHeaders().get(HEADER4));
Assert.assertEquals(HEADER5, event1.getHeaders().get(HEADER5));
removeHeaderInterceptor.intercept(event1);
Assert.assertEquals(HEADER1, event1.getHeaders().get(HEADER1));
Assert.assertEquals(HEADER2, event1.getHeaders().get(HEADER2));
Assert.assertEquals(HEADER3, event1.getHeaders().get(HEADER3));
Assert.assertEquals(HEADER4, event1.getHeaders().get(HEADER4));
Assert.assertEquals(HEADER5, event1.getHeaders().get(HEADER5));
final Event event2 = buildEventWithoutHeader();
Assert.assertTrue(event2.getHeaders().isEmpty());
removeHeaderInterceptor.intercept(event2);
Assert.assertTrue(event2.getHeaders().isEmpty());
}
@Test
public void testMatchRegex() throws Exception {
final Interceptor removeHeaderInterceptor = new RemoveHeaderIntBuilder()
.matchRegex("my-header1.*").build();
final Event event1 = buildEventWithHeader();
Assert.assertEquals(HEADER1, event1.getHeaders().get(HEADER1));
Assert.assertEquals(HEADER2, event1.getHeaders().get(HEADER2));
Assert.assertEquals(HEADER3, event1.getHeaders().get(HEADER3));
Assert.assertEquals(HEADER4, event1.getHeaders().get(HEADER4));
Assert.assertEquals(HEADER5, event1.getHeaders().get(HEADER5));
removeHeaderInterceptor.intercept(event1);
Assert.assertNull(event1.getHeaders().get(HEADER1));
Assert.assertNull(event1.getHeaders().get(HEADER2));
Assert.assertNull(event1.getHeaders().get(HEADER3));
Assert.assertEquals(HEADER4, event1.getHeaders().get(HEADER4));
Assert.assertEquals(HEADER5, event1.getHeaders().get(HEADER5));
final Event event2 = buildEventWithoutHeader();
Assert.assertTrue(event2.getHeaders().isEmpty());
removeHeaderInterceptor.intercept(event2);
Assert.assertTrue(event2.getHeaders().isEmpty());
}
@Test
public void testAll() throws Exception {
final Interceptor removeHeaderInterceptor = new RemoveHeaderIntBuilder()
.matchRegex("my-header2.*")
.fromList(HEADER1 + MY_SEPARATOR + HEADER3, MY_SEPARATOR)
.withName(HEADER2).build();
final Event event1 = buildEventWithHeader();
Assert.assertEquals(HEADER1, event1.getHeaders().get(HEADER1));
Assert.assertEquals(HEADER2, event1.getHeaders().get(HEADER2));
Assert.assertEquals(HEADER3, event1.getHeaders().get(HEADER3));
Assert.assertEquals(HEADER4, event1.getHeaders().get(HEADER4));
Assert.assertEquals(HEADER5, event1.getHeaders().get(HEADER5));
removeHeaderInterceptor.intercept(event1);
Assert.assertTrue(event1.getHeaders().isEmpty());
final Event event2 = buildEventWithoutHeader();
Assert.assertTrue(event2.getHeaders().isEmpty());
removeHeaderInterceptor.intercept(event2);
Assert.assertTrue(event2.getHeaders().isEmpty());
}
private static class RemoveHeaderIntBuilder {
final Map<String, String> contextMap = new HashMap<>();
RemoveHeaderIntBuilder withName(final String str) {
contextMap.put(RemoveHeaderInterceptor.WITH_NAME, str);
return this;
}
RemoveHeaderIntBuilder fromList(final String str) {
contextMap.put(RemoveHeaderInterceptor.FROM_LIST, str);
return this;
}
RemoveHeaderIntBuilder fromList(final String str,
final String separator) {
fromList(str);
contextMap.put(RemoveHeaderInterceptor.LIST_SEPARATOR, separator);
return this;
}
RemoveHeaderIntBuilder matchRegex(final String str) {
contextMap.put(RemoveHeaderInterceptor.MATCH_REGEX, str);
return this;
}
public Interceptor build() throws InstantiationException, IllegalAccessException,
ClassNotFoundException {
Interceptor.Builder builder = InterceptorBuilderFactory.newInstance(
InterceptorType.REMOVE_HEADER.toString());
builder.configure(new Context(contextMap));
return builder.build();
}
}
}