/*
* Copyright 2002-2017 the original author or authors.
*
* Licensed 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.springframework.cloud.stream.binder;
import org.junit.Assert;
import org.junit.Test;
import org.springframework.integration.support.MessageBuilder;
import org.springframework.messaging.Message;
import org.springframework.messaging.support.GenericMessage;
import static org.assertj.core.api.Assertions.assertThat;
/**
* @author Gary Russell
* @author Ilayaperumal Gopinathan
* @since 1.0
*/
public class MessageConverterTests {
@Test
public void testHeaderEmbedding() throws Exception {
Message<byte[]> message = MessageBuilder.withPayload("Hello".getBytes()).setHeader("foo", "bar")
.setHeader("baz", "quxx").build();
byte[] embedded = EmbeddedHeaderUtils.embedHeaders(new MessageValues(message), "foo", "baz");
assertThat(embedded[0] & 0xff).isEqualTo(0xff);
assertThat(new String(embedded).substring(1)).isEqualTo(
"\u0002\u0003foo\u0000\u0000\u0000\u0005\"bar\"\u0003baz\u0000\u0000\u0000\u0006\"quxx\"Hello");
MessageValues extracted = EmbeddedHeaderUtils.extractHeaders(MessageBuilder.withPayload(embedded).build(), false);
assertThat(new String((byte[]) extracted.getPayload())).isEqualTo("Hello");
assertThat(extracted.get("foo")).isEqualTo("bar");
assertThat(extracted.get("baz")).isEqualTo("quxx");
}
@Test
public void testConfigurableHeaders() throws Exception {
Message<byte[]> message = MessageBuilder.withPayload("Hello".getBytes()).setHeader("foo", "bar")
.setHeader("baz", "quxx").setHeader("contentType", "text/plain").build();
String[] headers = new String[]{"foo"};
byte[] embedded = EmbeddedHeaderUtils.embedHeaders(new MessageValues(message), EmbeddedHeaderUtils.headersToEmbed(headers));
assertThat(embedded[0] & 0xff).isEqualTo(0xff);
assertThat(new String(embedded).substring(1)).isEqualTo(
"\u0002\u000BcontentType\u0000\u0000\u0000\u000C\"text/plain\"\u0003foo\u0000\u0000\u0000\u0005\"bar\"Hello");
MessageValues extracted = EmbeddedHeaderUtils.extractHeaders(MessageBuilder.withPayload(embedded).build(), false);
assertThat(new String((byte[]) extracted.getPayload())).isEqualTo("Hello");
assertThat(extracted.get("foo")).isEqualTo("bar");
assertThat(extracted.get("baz")).isNull();
assertThat(extracted.get("contentType")).isEqualTo("text/plain");
assertThat(extracted.get("timestamp")).isNull();
MessageValues extractedWithRequestHeaders = EmbeddedHeaderUtils.extractHeaders(MessageBuilder.withPayload(embedded).build(), true);
assertThat(extractedWithRequestHeaders.get("foo")).isEqualTo("bar");
assertThat(extractedWithRequestHeaders.get("baz")).isNull();
assertThat(extractedWithRequestHeaders.get("contentType")).isEqualTo("text/plain");
assertThat(extractedWithRequestHeaders.get("timestamp")).isNotNull();
}
@Test
public void testHeaderExtractionWithDirectPayload() throws Exception {
Message<byte[]> message = MessageBuilder.withPayload("Hello".getBytes()).setHeader("foo", "bar")
.setHeader("baz", "quxx").build();
byte[] embedded = EmbeddedHeaderUtils.embedHeaders(new MessageValues(message), "foo", "baz");
assertThat(embedded[0] & 0xff).isEqualTo(0xff);
assertThat(new String(embedded).substring(1)).isEqualTo(
"\u0002\u0003foo\u0000\u0000\u0000\u0005\"bar\"\u0003baz\u0000\u0000\u0000\u0006\"quxx\"Hello");
MessageValues extracted = EmbeddedHeaderUtils.extractHeaders(embedded);
assertThat(new String((byte[]) extracted.getPayload())).isEqualTo("Hello");
assertThat(extracted.get("foo")).isEqualTo("bar");
assertThat(extracted.get("baz")).isEqualTo("quxx");
}
@Test
public void testUnicodeHeader() throws Exception {
Message<byte[]> message = MessageBuilder.withPayload("Hello".getBytes()).setHeader("foo", "bar")
.setHeader("baz", "ØØØØØØØØ").build();
byte[] embedded = EmbeddedHeaderUtils.embedHeaders(new MessageValues(message), "foo", "baz");
assertThat(embedded[0] & 0xff).isEqualTo(0xff);
assertThat(new String(embedded, "UTF-8").substring(1)).isEqualTo(
"\u0002\u0003foo\u0000\u0000\u0000\u0005\"bar\"\u0003baz\u0000\u0000\u0000\u0012\"ØØØØØØØØ\"Hello");
MessageValues extracted = EmbeddedHeaderUtils.extractHeaders(MessageBuilder.withPayload(embedded).build(), false);
assertThat(new String((byte[]) extracted.getPayload())).isEqualTo("Hello");
assertThat(extracted.get("foo")).isEqualTo("bar");
assertThat(extracted.get("baz")).isEqualTo("ØØØØØØØØ");
}
@Test
public void testHeaderEmbeddingMissingHeader() throws Exception {
Message<byte[]> message = MessageBuilder.withPayload("Hello".getBytes()).setHeader("foo", "bar").build();
byte[] embedded = EmbeddedHeaderUtils.embedHeaders(new MessageValues(message), "foo", "baz");
assertThat(embedded[0] & 0xff).isEqualTo(0xff);
assertThat(new String(embedded).substring(1)).isEqualTo("\u0001\u0003foo\u0000\u0000\u0000\u0005\"bar\"Hello");
}
@Test
public void testCanDecodeOldFormat() throws Exception {
byte[] bytes = "\u0002\u0003foo\u0003bar\u0003baz\u0004quxxHello".getBytes("UTF-8");
Message<byte[]> message = new GenericMessage<>(bytes);
MessageValues extracted = EmbeddedHeaderUtils.extractHeaders(message, false);
assertThat(new String((byte[]) extracted.getPayload())).isEqualTo("Hello");
assertThat(extracted.get("foo")).isEqualTo("bar");
assertThat(extracted.get("baz")).isEqualTo("quxx");
}
@Test
public void testBadDecode() throws Exception {
byte[] bytes = "\u0002\u0003foo\u0020bar\u0003baz\u0004quxxHello".getBytes("UTF-8");
Message<byte[]> message = new GenericMessage<>(bytes);
try {
EmbeddedHeaderUtils.extractHeaders(message, false);
Assert.fail("Exception expected");
}
catch (Exception e) {
String s = EmbeddedHeaderUtils.decodeExceptionMessage(message);
assertThat(e).isInstanceOf(StringIndexOutOfBoundsException.class);
assertThat(s).startsWith("Could not convert message: 0203666F6F");
}
}
}