First pass at inbound/outbound JSON mapping for INT-1000 and INT-1001. Needs complete Javadoc'ing and still has some TODO's to address.
This commit is contained in:
Jeremy Grelle
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package org.springframework.integration.json;
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import static org.junit.Assert.assertEquals;
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import static org.junit.Assert.fail;
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import java.io.IOException;
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import java.io.StringWriter;
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import java.util.Arrays;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import org.codehaus.jackson.JsonGenerationException;
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import org.codehaus.jackson.map.JsonMappingException;
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import org.codehaus.jackson.map.ObjectMapper;
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import org.codehaus.jackson.type.TypeReference;
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import org.junit.Test;
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import org.springframework.integration.core.Message;
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import org.springframework.integration.core.MessageHeaders;
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import org.springframework.integration.message.MessageBuilder;
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public class InboundJsonMessageMapperTests {
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ObjectMapper mapper = new ObjectMapper();
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@Test
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public void testToMessageWithHeadersAndStringPayload() throws Exception {
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String jsonMessage = "{\"headers\":{\"$timestamp\":1,\"$id\":\"myUniqueId\"},\"payload\":\"myPayloadStuff\"}";
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Message<String> expected = MessageBuilder.withPayload("myPayloadStuff").setHeader(MessageHeaders.TIMESTAMP, new Long(1)).setHeader(MessageHeaders.ID,"myUniqueId").build();
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InboundJsonMessageMapper mapper = new InboundJsonMessageMapper(String.class);
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Message<?> result = mapper.toMessage(jsonMessage);
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assertEquals(expected, result);
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}
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@Test
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public void testToMessageWithStringPayload() throws Exception {
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String jsonMessage = "\"myPayloadStuff\"";
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String expected = "myPayloadStuff";
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InboundJsonMessageMapper mapper = new InboundJsonMessageMapper(String.class);
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mapper.setMapToPayload(true);
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Message<?> result = mapper.toMessage(jsonMessage);
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assertEquals(expected, result.getPayload());
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}
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@Test
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public void testToMessageWithHeadersAndBeanPayload() throws Exception {
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TestBean bean = new TestBean();
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String jsonMessage = "{\"headers\":{\"$timestamp\":1,\"$id\":\"myUniqueId\"},\"payload\":"+getBeanAsJson(bean)+"}";
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Message<TestBean> expected = MessageBuilder.withPayload(bean).setHeader(MessageHeaders.TIMESTAMP, new Long(1)).setHeader(MessageHeaders.ID,"myUniqueId").build();
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InboundJsonMessageMapper mapper = new InboundJsonMessageMapper(TestBean.class);
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Message<?> result = mapper.toMessage(jsonMessage);
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assertEquals(expected, result);
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}
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@Test
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public void testToMessageWithBeanPayload() throws Exception {
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TestBean expected = new TestBean();
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String jsonMessage = getBeanAsJson(expected);
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InboundJsonMessageMapper mapper = new InboundJsonMessageMapper(TestBean.class);
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mapper.setMapToPayload(true);
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Message<?> result = mapper.toMessage(jsonMessage);
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assertEquals(expected, result.getPayload());
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}
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@Test
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public void testToMessageWithBeanHeaderAndStringPayload() throws Exception {
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TestBean bean = new TestBean();
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String jsonMessage = "{\"headers\":{\"$timestamp\":1,\"$id\":\"myUniqueId\", \"myHeader\":"+getBeanAsJson(bean)+"},\"payload\":\"myPayloadStuff\"}";
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Message<String> expected = MessageBuilder.withPayload("myPayloadStuff").
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setHeader(MessageHeaders.TIMESTAMP, new Long(1)).setHeader(MessageHeaders.ID,"myUniqueId").setHeader("myHeader", bean).build();
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InboundJsonMessageMapper mapper = new InboundJsonMessageMapper(String.class);
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Map<String, Class<?>> headerTypes = new HashMap<String, Class<?>>();
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headerTypes.put("myHeader", TestBean.class);
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mapper.setHeaderTypes(headerTypes);
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Message<?> result = mapper.toMessage(jsonMessage);
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assertEquals(expected, result);
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}
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@Test
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public void testToMessageWithHeadersAndListOfStringsPayload() throws Exception {
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String jsonMessage = "{\"headers\":{\"$timestamp\":1,\"$id\":\"myUniqueId\"},\"payload\":[\"myPayloadStuff1\",\"myPayloadStuff2\",\"myPayloadStuff3\"]}";
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List<String> expectedList = Arrays.asList(new String[]{"myPayloadStuff1", "myPayloadStuff2", "myPayloadStuff3"});
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Message<List<String>> expected = MessageBuilder.withPayload(expectedList).setHeader(MessageHeaders.TIMESTAMP, new Long(1)).setHeader(MessageHeaders.ID,"myUniqueId").build();
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InboundJsonMessageMapper mapper = new InboundJsonMessageMapper(new TypeReference<List<String>>(){});
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Message<?> result = mapper.toMessage(jsonMessage);
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assertEquals(expected, result);
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}
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@Test
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public void testToMessageWithHeadersAndListOfBeansPayload() throws Exception {
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TestBean bean1 = new TestBean();
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TestBean bean2 = new TestBean();
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String jsonMessage = "{\"headers\":{\"$timestamp\":1,\"$id\":\"myUniqueId\"},\"payload\":["+getBeanAsJson(bean1)+","+getBeanAsJson(bean2)+"]}";
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List<TestBean> expectedList = Arrays.asList(new TestBean[]{bean1, bean2});
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Message<List<TestBean>> expected = MessageBuilder.withPayload(expectedList).setHeader(MessageHeaders.TIMESTAMP, new Long(1)).setHeader(MessageHeaders.ID,"myUniqueId").build();
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InboundJsonMessageMapper mapper = new InboundJsonMessageMapper(new TypeReference<List<TestBean>>(){});
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Message<?> result = mapper.toMessage(jsonMessage);
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assertEquals(expected, result);
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}
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@Test
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public void testToMessageInvalidFormatPayloadAndHeadersReversed() throws Exception {
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String jsonMessage = "{\"payload\":\"myPayloadStuff\",\"headers\":{\"$timestamp\":1,\"$id\":\"myUniqueId\"}}";
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InboundJsonMessageMapper mapper = new InboundJsonMessageMapper(String.class);
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try {
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mapper.toMessage(jsonMessage);
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fail();
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} catch(IllegalArgumentException ex) {
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//Expected
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}
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}
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@Test
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public void testToMessageInvalidFormatPayloadNoHeaders() throws Exception {
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String jsonMessage = "{\"payload\":\"myPayloadStuff\"}";
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InboundJsonMessageMapper mapper = new InboundJsonMessageMapper(String.class);
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try {
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mapper.toMessage(jsonMessage);
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fail();
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} catch(IllegalArgumentException ex) {
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//Expected
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}
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}
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@Test
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public void testToMessageInvalidFormatHeadersNoPayload() throws Exception {
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String jsonMessage = "{\"headers\":{\"$timestamp\":1,\"$id\":\"myUniqueId\"}}";
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InboundJsonMessageMapper mapper = new InboundJsonMessageMapper(String.class);
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try {
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mapper.toMessage(jsonMessage);
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fail();
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} catch(IllegalArgumentException ex) {
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//Expected
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}
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}
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@Test
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public void testToMessageInvalidFormatHeadersAndStringPayloadWithMapToPayload() throws Exception {
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String jsonMessage = "{\"headers\":{\"$timestamp\":1,\"$id\":\"myUniqueId\"},\"payload\":\"myPayloadStuff\"}";
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InboundJsonMessageMapper mapper = new InboundJsonMessageMapper(String.class);
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mapper.setMapToPayload(true);
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try {
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mapper.toMessage(jsonMessage);
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fail();
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} catch(IllegalArgumentException ex) {
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//Expected
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}
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}
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@Test
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public void testToMessageInvalidFormatHeadersAndBeanPayloadWithMapToPayload() throws Exception {
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TestBean bean = new TestBean();
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String jsonMessage = "{\"headers\":{\"$timestamp\":1,\"$id\":\"myUniqueId\"},\"payload\":"+getBeanAsJson(bean)+"}";
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InboundJsonMessageMapper mapper = new InboundJsonMessageMapper(TestBean.class);
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mapper.setMapToPayload(true);
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try {
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mapper.toMessage(jsonMessage);
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fail();
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} catch(IllegalArgumentException ex) {
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//Expected
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}
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}
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@Test
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public void testToMessageWithHeadersAndPayloadTypeMappingFailure() throws Exception {
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TestBean bean = new TestBean();
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String jsonMessage = "{\"headers\":{\"$timestamp\":1,\"$id\":\"myUniqueId\"},\"payload\":"+getBeanAsJson(bean)+"}";
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InboundJsonMessageMapper mapper = new InboundJsonMessageMapper(Long.class);
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try {
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mapper.toMessage(jsonMessage);
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fail();
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} catch(IllegalArgumentException ex) {
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//Expected
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}
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}
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@Test
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public void testToMessageWithBeanHeaderTypeMappingFailure() throws Exception {
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TestBean bean = new TestBean();
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String jsonMessage = "{\"headers\":{\"$timestamp\":1,\"$id\":\"myUniqueId\",\"myHeader\":"+getBeanAsJson(bean)+"},\"payload\":\"myPayloadStuff\"}";
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InboundJsonMessageMapper mapper = new InboundJsonMessageMapper(String.class);
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Map<String, Class<?>> headerTypes = new HashMap<String, Class<?>>();
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headerTypes.put("myHeader", Long.class);
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mapper.setHeaderTypes(headerTypes);
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try {
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mapper.toMessage(jsonMessage);
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fail();
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} catch(IllegalArgumentException ex) {
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//Expected
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}
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}
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private String getBeanAsJson(TestBean bean) throws JsonGenerationException, JsonMappingException, IOException {
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StringWriter writer = new StringWriter();
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mapper.writeValue(writer, bean);
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return writer.toString();
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}
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}
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@@ -0,0 +1,76 @@
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package org.springframework.integration.json;
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import static org.junit.Assert.*;
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import java.io.IOException;
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import org.codehaus.jackson.JsonFactory;
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import org.codehaus.jackson.JsonParseException;
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import org.codehaus.jackson.JsonParser;
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import org.codehaus.jackson.JsonToken;
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import org.codehaus.jackson.map.ObjectMapper;
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import org.junit.Test;
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import org.springframework.integration.core.Message;
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import org.springframework.integration.core.MessageHeaders;
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import org.springframework.integration.message.MessageBuilder;
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public class OutboundJsonMessageMapperTests {
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private JsonFactory jsonFactory = new JsonFactory();
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private ObjectMapper objectMapper = new ObjectMapper();
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@Test
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public void testFromMessageWithHeadersAndStringPayload() throws Exception {
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Message<String> testMessage = MessageBuilder.withPayload("myPayloadStuff").build();
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String expected = "{\"headers\":{\"$timestamp\":"+testMessage.getHeaders().getTimestamp()+
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",\"$history\":[],\"$id\":\""+testMessage.getHeaders().getId()+"\"},\"payload\":\"myPayloadStuff\"}";
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OutboundJsonMessageMapper mapper = new OutboundJsonMessageMapper();
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String result = mapper.fromMessage(testMessage);
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assertEquals(expected, result);
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}
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@Test
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public void testFromMessageExtractStringPayload() throws Exception {
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Message<String> testMessage = MessageBuilder.withPayload("myPayloadStuff").build();
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String expected = "\"myPayloadStuff\"";
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OutboundJsonMessageMapper mapper = new OutboundJsonMessageMapper();
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mapper.setShouldExtractPayload(true);
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String result = mapper.fromMessage(testMessage);
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assertEquals(expected, result);
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}
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@Test
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public void testFromMessageWithHeadersAndBeanPayload() throws Exception {
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TestBean payload = new TestBean();
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Message<TestBean> testMessage = MessageBuilder.withPayload(payload).setHeader(MessageHeaders.TIMESTAMP, new Long(1234)).setHeader(MessageHeaders.ID, "myUniqueId").build();
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String expectedHeaders = "\"headers\":{\"$timestamp\":"+testMessage.getHeaders().getTimestamp()+
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",\"$history\":[],\"$id\":\""+testMessage.getHeaders().getId()+"\"";
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OutboundJsonMessageMapper mapper = new OutboundJsonMessageMapper();
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String result = mapper.fromMessage(testMessage);
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assertTrue(result.contains(expectedHeaders));
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TestBean parsedPayload = extractJsonPayloadToTestBean(result);
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assertEquals(payload, parsedPayload);
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}
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@Test
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public void testFromMessageExtractBeanPayload() throws Exception {
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TestBean payload = new TestBean();
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Message<TestBean> testMessage = MessageBuilder.withPayload(payload).build();
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OutboundJsonMessageMapper mapper = new OutboundJsonMessageMapper();
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mapper.setShouldExtractPayload(true);
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String result = mapper.fromMessage(testMessage);
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assertTrue(!result.contains("headers"));
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TestBean parsedPayload = objectMapper.readValue(result, TestBean.class);
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assertEquals(payload, parsedPayload);
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}
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private TestBean extractJsonPayloadToTestBean(String json) throws JsonParseException, IOException {
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JsonParser parser = jsonFactory.createJsonParser(json);
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do {
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parser.nextToken();
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} while(parser.getCurrentToken() != JsonToken.FIELD_NAME || !parser.getCurrentName().equals("payload"));
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parser.nextToken();
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return objectMapper.readValue(parser, TestBean.class);
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}
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}
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@@ -0,0 +1,93 @@
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package org.springframework.integration.json;
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import java.util.Date;
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public class TestBean {
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private String value = "foo";
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private boolean test = false;
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private long number = 42;
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private Date now = new Date();
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private TestChildBean child = new TestChildBean();
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public String getValue() {
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return value;
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}
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public boolean getTest() {
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return test;
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}
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public long getNumber() {
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return number;
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}
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public Date getNow() {
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return this.now;
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}
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public TestChildBean getChild() {
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return child;
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}
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public void setValue(String value) {
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this.value = value;
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}
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public void setTest(boolean test) {
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this.test = test;
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}
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public void setNumber(long number) {
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this.number = number;
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}
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public void setChild(TestChildBean child) {
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this.child = child;
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}
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public void setNow(Date now) {
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this.now = now;
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}
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@Override
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public int hashCode() {
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final int prime = 31;
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int result = 1;
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result = prime * result + ((child == null) ? 0 : child.hashCode());
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result = prime * result + (int) (number ^ (number >>> 32));
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result = prime * result + (test ? 1231 : 1237);
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result = prime * result + ((value == null) ? 0 : value.hashCode());
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return result;
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}
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@Override
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public boolean equals(Object obj) {
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if (this == obj)
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return true;
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if (obj == null)
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return false;
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if (getClass() != obj.getClass())
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return false;
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TestBean other = (TestBean) obj;
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if (child == null) {
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if (other.child != null)
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return false;
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} else if (!child.equals(other.child))
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return false;
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if (number != other.number)
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return false;
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if (test != other.test)
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return false;
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if (value == null) {
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if (other.value != null)
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return false;
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} else if (!value.equals(other.value))
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return false;
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return true;
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}
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}
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@@ -0,0 +1,71 @@
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package org.springframework.integration.json;
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public class TestChildBean {
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private String value = "bar";
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private String baz = null;
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private TestBean parent = null;
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public String getValue() {
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return value;
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}
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public String getBaz() {
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return baz;
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}
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public TestBean getParent() {
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return parent;
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}
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public void setParent(TestBean parent) {
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this.parent = parent;
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}
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public void setValue(String value) {
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this.value = value;
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}
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public void setBaz(String baz) {
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this.baz = baz;
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}
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@Override
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public int hashCode() {
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final int prime = 31;
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int result = 1;
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result = prime * result + ((baz == null) ? 0 : baz.hashCode());
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result = prime * result
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+ ((parent == null) ? 0 : parent.hashCode());
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result = prime * result + ((value == null) ? 0 : value.hashCode());
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return result;
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}
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@Override
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public boolean equals(Object obj) {
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if (this == obj)
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return true;
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if (obj == null)
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return false;
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if (getClass() != obj.getClass())
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return false;
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TestChildBean other = (TestChildBean) obj;
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if (baz == null) {
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if (other.baz != null)
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return false;
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} else if (!baz.equals(other.baz))
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return false;
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if (parent == null) {
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if (other.parent != null)
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return false;
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} else if (!parent.equals(other.parent))
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return false;
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if (value == null) {
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if (other.value != null)
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return false;
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} else if (!value.equals(other.value))
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return false;
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return true;
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}
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}
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