This is an automated email from the ASF dual-hosted git repository.
karp pushed a commit to branch main
in repository https://gitbox.apache.org/repos/asf/rocketmq-schema-registry.git
The following commit(s) were added to refs/heads/main by this push:
new d719428 support JSON serde (#41)
d719428 is described below
commit d71942859c6ede31f929ed60d6c6df218c6996f7
Author: humkum <[email protected]>
AuthorDate: Mon Aug 22 19:15:13 2022 +0800
support JSON serde (#41)
* support JSON serde
* support JSON serde
---
.../registry/client/serde/avro/AvroSerializer.java | 5 +-
.../client/serde/json/JsonDeserializer.java | 87 ++++++++++++++++++++++
.../registry/client/serde/json/JsonSerde.java | 52 +++++++++++++
.../registry/client/serde/json/JsonSerializer.java | 81 ++++++++++++++++++++
.../schema/registry/common/QualifiedName.java | 10 ++-
.../registry/common/constant/SchemaConstants.java | 23 ++++++
.../schema/registry/common/model/SubjectInfo.java | 4 +-
.../schema/registry/example/serde/Person.java | 45 ++++++-----
.../serde/{ => avro}/GenericAvroSerdeDemo.java | 4 +-
.../serde/{ => avro}/SpecificAvroSerdeDemo.java | 5 +-
.../registry/example/serde/json/JsonSerdeDemo.java | 69 +++++++++++++++++
11 files changed, 354 insertions(+), 31 deletions(-)
diff --git
a/client/src/main/java/org/apache/rocketmq/schema/registry/client/serde/avro/AvroSerializer.java
b/client/src/main/java/org/apache/rocketmq/schema/registry/client/serde/avro/AvroSerializer.java
index e883e09..41ae117 100644
---
a/client/src/main/java/org/apache/rocketmq/schema/registry/client/serde/avro/AvroSerializer.java
+++
b/client/src/main/java/org/apache/rocketmq/schema/registry/client/serde/avro/AvroSerializer.java
@@ -28,6 +28,7 @@ import
org.apache.rocketmq.schema.registry.client.SchemaRegistryClient;
import
org.apache.rocketmq.schema.registry.client.exceptions.RestClientException;
import
org.apache.rocketmq.schema.registry.client.exceptions.SerializationException;
import org.apache.rocketmq.schema.registry.client.serde.Serializer;
+import org.apache.rocketmq.schema.registry.common.constant.SchemaConstants;
import org.apache.rocketmq.schema.registry.common.dto.GetSchemaResponse;
import java.io.ByteArrayOutputStream;
@@ -37,8 +38,6 @@ import java.util.Map;
public class AvroSerializer<T> implements Serializer<T> {
- private static final int SCHEMA_ID_LENGTH = 8;
- private static final int SCHEMA_VERSION_LENGTH = 8;
protected SchemaRegistryClient schemaRegistry;
private final EncoderFactory encoderFactory = EncoderFactory.get();
@@ -72,7 +71,7 @@ public class AvroSerializer<T> implements Serializer<T> {
Schema schema = new Schema.Parser().parse(schemaIdl);
ByteArrayOutputStream out = new ByteArrayOutputStream();
BinaryEncoder encoder = encoderFactory.directBinaryEncoder(out,
null);
- ByteBuffer buffer = ByteBuffer.allocate(SCHEMA_ID_LENGTH +
SCHEMA_VERSION_LENGTH);
+ ByteBuffer buffer =
ByteBuffer.allocate(SchemaConstants.SCHEMA_RECORD_ID_LENGTH);
encoder.writeBytes(buffer.putLong(schemaRecordId).array());
DatumWriter<T> datumWriter;
diff --git
a/client/src/main/java/org/apache/rocketmq/schema/registry/client/serde/json/JsonDeserializer.java
b/client/src/main/java/org/apache/rocketmq/schema/registry/client/serde/json/JsonDeserializer.java
new file mode 100644
index 0000000..0569c32
--- /dev/null
+++
b/client/src/main/java/org/apache/rocketmq/schema/registry/client/serde/json/JsonDeserializer.java
@@ -0,0 +1,87 @@
+/*
+ * 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.rocketmq.schema.registry.client.serde.json;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.apache.rocketmq.schema.registry.client.SchemaRegistryClient;
+import
org.apache.rocketmq.schema.registry.client.exceptions.RestClientException;
+import
org.apache.rocketmq.schema.registry.client.exceptions.SerializationException;
+import org.apache.rocketmq.schema.registry.client.rest.JacksonMapper;
+import org.apache.rocketmq.schema.registry.client.serde.Deserializer;
+import org.apache.rocketmq.schema.registry.common.constant.SchemaConstants;
+import org.apache.rocketmq.schema.registry.common.dto.GetSchemaResponse;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.util.Map;
+
+public class JsonDeserializer<T> implements Deserializer<T> {
+ Logger log = LoggerFactory.getLogger(JsonDeserializer.class);
+ private final SchemaRegistryClient registryClient;
+ private final ObjectMapper objectMapper;
+ private final Class<T> type;
+
+ public JsonDeserializer(SchemaRegistryClient registryClient, Class<T>
type) {
+ this.registryClient = registryClient;
+ objectMapper = JacksonMapper.INSTANCE;
+ this.type = type;
+ }
+
+ @Override
+ public void configure(Map<String, Object> configs) {
+
+ }
+
+ @Override
+ public T deserialize(String subject, byte[] payload) {
+ if (null == registryClient) {
+ throw new SerializationException("please initialize the schema
registry client first");
+ }
+
+ if (null == payload || payload.length == 0) {
+ return null;
+ }
+
+ try {
+ GetSchemaResponse response =
registryClient.getSchemaBySubject(subject);
+ ByteBuffer buffer = ByteBuffer.wrap(payload);
+
+ long schemaRecordId = buffer.getLong();
+
+ int length = buffer.limit() -
SchemaConstants.SCHEMA_RECORD_ID_LENGTH;
+ int start = buffer.position() + buffer.arrayOffset();
+
+ JsonNode jsonNode = null;
+ jsonNode = objectMapper.readValue(buffer.array(), start, length,
JsonNode.class);
+
+ return objectMapper.convertValue(jsonNode, type);
+ } catch (RestClientException e) {
+ throw new RuntimeException(e);
+ } catch (IOException e) {
+ throw new RuntimeException(e);
+ }
+ }
+
+ @Override
+ public void close() {
+
+ }
+}
diff --git
a/client/src/main/java/org/apache/rocketmq/schema/registry/client/serde/json/JsonSerde.java
b/client/src/main/java/org/apache/rocketmq/schema/registry/client/serde/json/JsonSerde.java
new file mode 100644
index 0000000..52493b1
--- /dev/null
+++
b/client/src/main/java/org/apache/rocketmq/schema/registry/client/serde/json/JsonSerde.java
@@ -0,0 +1,52 @@
+/*
+ * 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.rocketmq.schema.registry.client.serde.json;
+
+import org.apache.rocketmq.schema.registry.client.SchemaRegistryClient;
+
+import java.io.Closeable;
+import java.io.IOException;
+import java.util.Map;
+
+public class JsonSerde<T> implements Closeable {
+ private final JsonSerializer<T> serializer;
+ private final JsonDeserializer<T> deserializer;
+
+ public JsonSerde(SchemaRegistryClient registryClient, Class<T> type) {
+ this.serializer = new JsonSerializer<>(registryClient);
+ this.deserializer = new JsonDeserializer<>(registryClient, type);
+ }
+
+ public void configure(final Map<String, Object> configs) {
+ this.serializer.configure(configs);
+ this.deserializer.configure(configs);
+ }
+
+ public JsonSerializer<T> serializer() {
+ return this.serializer;
+ }
+
+ public JsonDeserializer<T> deserializer() {
+ return this.deserializer;
+ }
+
+ @Override
+ public void close() throws IOException {
+
+ }
+}
diff --git
a/client/src/main/java/org/apache/rocketmq/schema/registry/client/serde/json/JsonSerializer.java
b/client/src/main/java/org/apache/rocketmq/schema/registry/client/serde/json/JsonSerializer.java
new file mode 100644
index 0000000..5cae08e
--- /dev/null
+++
b/client/src/main/java/org/apache/rocketmq/schema/registry/client/serde/json/JsonSerializer.java
@@ -0,0 +1,81 @@
+/*
+ * 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.rocketmq.schema.registry.client.serde.json;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.apache.avro.io.EncoderFactory;
+import org.apache.rocketmq.schema.registry.client.SchemaRegistryClient;
+import
org.apache.rocketmq.schema.registry.client.exceptions.RestClientException;
+import
org.apache.rocketmq.schema.registry.client.exceptions.SerializationException;
+import org.apache.rocketmq.schema.registry.client.rest.JacksonMapper;
+import org.apache.rocketmq.schema.registry.client.serde.Serializer;
+import org.apache.rocketmq.schema.registry.common.constant.SchemaConstants;
+import org.apache.rocketmq.schema.registry.common.dto.GetSchemaResponse;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.util.Map;
+
+public class JsonSerializer<T> implements Serializer<T> {
+ private final SchemaRegistryClient registryClient;
+ private final ObjectMapper objectMapper;
+ private final EncoderFactory encoderFactory = EncoderFactory.get();
+
+ public JsonSerializer(SchemaRegistryClient registryClient) {
+ this.objectMapper = JacksonMapper.INSTANCE;
+ this.registryClient = registryClient;
+ }
+
+ @Override
+ public void configure(Map<String, Object> configs) {
+
+ }
+
+ @Override
+ public byte[] serialize(String subject, T originMessage) {
+ if (null == originMessage) {
+ return null;
+ }
+
+ if (null == registryClient) {
+ throw new SerializationException("please initialize the schema
registry client first");
+ }
+
+ try (ByteArrayOutputStream out = new ByteArrayOutputStream()) {
+ GetSchemaResponse response =
registryClient.getSchemaBySubject(subject);
+ long schemaRecordId = response.getRecordId();
+ ByteBuffer buffer =
ByteBuffer.allocate(SchemaConstants.SCHEMA_RECORD_ID_LENGTH);
+ out.write(buffer.putLong(schemaRecordId).array());
+ out.write(objectMapper.writeValueAsBytes(originMessage));
+
+ byte[] bytes = out.toByteArray();
+ return bytes;
+ } catch (IOException | RuntimeException e) {
+ throw new SerializationException("JSON serialize failed", e);
+ } catch (RestClientException e) {
+ throw new SerializationException("get schema by subject failed",
e);
+ }
+
+ }
+
+ @Override
+ public void close() {
+
+ }
+}
diff --git
a/common/src/main/java/org/apache/rocketmq/schema/registry/common/QualifiedName.java
b/common/src/main/java/org/apache/rocketmq/schema/registry/common/QualifiedName.java
index 87cacee..bf7ece0 100644
---
a/common/src/main/java/org/apache/rocketmq/schema/registry/common/QualifiedName.java
+++
b/common/src/main/java/org/apache/rocketmq/schema/registry/common/QualifiedName.java
@@ -22,6 +22,7 @@ import javax.annotation.Nullable;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;
+import org.apache.rocketmq.schema.registry.common.constant.SchemaConstants;
import org.apache.rocketmq.schema.registry.common.model.SubjectInfo;
@Data
@@ -67,15 +68,18 @@ public class QualifiedName implements Serializable {
}
public String fullName() {
- return cluster + '/' + tenant + '/' + subject + '/' + schema;
+ return cluster + SchemaConstants.SUBJECT_SEPARATOR + tenant
+ + SchemaConstants.SUBJECT_SEPARATOR + subject
+ + SchemaConstants.SUBJECT_SEPARATOR + schema;
}
public String schemaFullName() {
- return tenant + '/' + schema;
+ return tenant + SchemaConstants.SUBJECT_SEPARATOR + schema;
}
public String subjectFullName() {
- return cluster + '/' + tenant + '/' + subject;
+ return cluster + SchemaConstants.SUBJECT_SEPARATOR + tenant
+ + SchemaConstants.SUBJECT_SEPARATOR + subject;
}
@Override
diff --git
a/common/src/main/java/org/apache/rocketmq/schema/registry/common/constant/SchemaConstants.java
b/common/src/main/java/org/apache/rocketmq/schema/registry/common/constant/SchemaConstants.java
new file mode 100644
index 0000000..f3af9be
--- /dev/null
+++
b/common/src/main/java/org/apache/rocketmq/schema/registry/common/constant/SchemaConstants.java
@@ -0,0 +1,23 @@
+/*
+ * 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.rocketmq.schema.registry.common.constant;
+
+public class SchemaConstants {
+ public static final int SCHEMA_RECORD_ID_LENGTH = 8;
+ public static final char SUBJECT_SEPARATOR = '/';
+}
diff --git
a/common/src/main/java/org/apache/rocketmq/schema/registry/common/model/SubjectInfo.java
b/common/src/main/java/org/apache/rocketmq/schema/registry/common/model/SubjectInfo.java
index cc61275..baf65dd 100644
---
a/common/src/main/java/org/apache/rocketmq/schema/registry/common/model/SubjectInfo.java
+++
b/common/src/main/java/org/apache/rocketmq/schema/registry/common/model/SubjectInfo.java
@@ -23,6 +23,7 @@ import lombok.Builder;
import lombok.Data;
import lombok.EqualsAndHashCode;
import lombok.NoArgsConstructor;
+import org.apache.rocketmq.schema.registry.common.constant.SchemaConstants;
@Data
@EqualsAndHashCode(callSuper = false)
@@ -37,7 +38,8 @@ public class SubjectInfo implements Serializable {
private String subject;
public String fullName() {
- return cluster + '/' + tenant + '/' + subject;
+ return cluster + SchemaConstants.SUBJECT_SEPARATOR + tenant
+ + SchemaConstants.SUBJECT_SEPARATOR + subject;
}
@Override
diff --git
a/common/src/main/java/org/apache/rocketmq/schema/registry/common/model/SubjectInfo.java
b/example/src/main/java/org/apache/rocketmq/schema/registry/example/serde/Person.java
similarity index 55%
copy from
common/src/main/java/org/apache/rocketmq/schema/registry/common/model/SubjectInfo.java
copy to
example/src/main/java/org/apache/rocketmq/schema/registry/example/serde/Person.java
index cc61275..b2d1fd8 100644
---
a/common/src/main/java/org/apache/rocketmq/schema/registry/common/model/SubjectInfo.java
+++
b/example/src/main/java/org/apache/rocketmq/schema/registry/example/serde/Person.java
@@ -15,41 +15,46 @@
* limitations under the License.
*/
-package org.apache.rocketmq.schema.registry.common.model;
+package org.apache.rocketmq.schema.registry.example.serde;
-import java.io.Serializable;
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
-import lombok.EqualsAndHashCode;
import lombok.NoArgsConstructor;
+import java.util.Objects;
+
@Data
-@EqualsAndHashCode(callSuper = false)
@Builder
@AllArgsConstructor
@NoArgsConstructor
-public class SubjectInfo implements Serializable {
- private static final long serialVersionUID = -92808722007777844L;
+@JsonPropertyOrder(alphabetic = true)
+public class Person {
+ @JsonIgnore
+ private Long id;
+ private String name;
+ private int age;
- private String cluster;
- private String tenant;
- private String subject;
+ @Override
+ public boolean equals(Object o) {
+ if (this == o) return true;
+ if (o == null || getClass() != o.getClass()) return false;
+ Person person = (Person) o;
+ return age == person.age && Objects.equals(name, person.name);
+ }
- public String fullName() {
- return cluster + '/' + tenant + '/' + subject;
+ @Override
+ public int hashCode() {
+ return Objects.hash(name, age);
}
@Override
public String toString() {
- final StringBuilder sb = new StringBuilder("{");
- sb.append("\"cluster\":\"")
- .append(cluster).append('\"');
- sb.append("\"tenant\":\"")
- .append(tenant).append('\"');
- sb.append(",\"subject\":\"")
- .append(subject).append('\"');
- sb.append('}');
- return sb.toString();
+ return "Person{" +
+ "name='" + name + '\'' +
+ ", age=" + age +
+ '}';
}
}
diff --git
a/example/src/main/java/org/apache/rocketmq/schema/registry/example/serde/GenericAvroSerdeDemo.java
b/example/src/main/java/org/apache/rocketmq/schema/registry/example/serde/avro/GenericAvroSerdeDemo.java
similarity index 95%
rename from
example/src/main/java/org/apache/rocketmq/schema/registry/example/serde/GenericAvroSerdeDemo.java
rename to
example/src/main/java/org/apache/rocketmq/schema/registry/example/serde/avro/GenericAvroSerdeDemo.java
index b8359a7..8e02ec6 100644
---
a/example/src/main/java/org/apache/rocketmq/schema/registry/example/serde/GenericAvroSerdeDemo.java
+++
b/example/src/main/java/org/apache/rocketmq/schema/registry/example/serde/avro/GenericAvroSerdeDemo.java
@@ -14,7 +14,7 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
-package org.apache.rocketmq.schema.registry.example.serde;
+package org.apache.rocketmq.schema.registry.example.serde.avro;
import org.apache.avro.Schema;
import org.apache.avro.generic.GenericRecord;
@@ -32,7 +32,7 @@ public class GenericAvroSerdeDemo {
public static void main(String[] args) {
- String baseUrl = "http://localhost:8080/schema-registry/v1";;
+ String baseUrl = "http://localhost:8080";;
SchemaRegistryClient schemaRegistryClient =
SchemaRegistryClientFactory.newClient(baseUrl, null);
Schema schema = new
Schema.Parser().parse("{\"type\":\"record\",\"name\":\"Charge\",\"namespace\":\"org.apache.rocketmq.schema.registry.example.serde\",\"fields\":[{\"name\":\"item\",\"type\":\"string\"},{\"name\":\"amount\",\"type\":\"double\"}]}");
diff --git
a/example/src/main/java/org/apache/rocketmq/schema/registry/example/serde/SpecificAvroSerdeDemo.java
b/example/src/main/java/org/apache/rocketmq/schema/registry/example/serde/avro/SpecificAvroSerdeDemo.java
similarity index 91%
rename from
example/src/main/java/org/apache/rocketmq/schema/registry/example/serde/SpecificAvroSerdeDemo.java
rename to
example/src/main/java/org/apache/rocketmq/schema/registry/example/serde/avro/SpecificAvroSerdeDemo.java
index 281d383..ad9281a 100644
---
a/example/src/main/java/org/apache/rocketmq/schema/registry/example/serde/SpecificAvroSerdeDemo.java
+++
b/example/src/main/java/org/apache/rocketmq/schema/registry/example/serde/avro/SpecificAvroSerdeDemo.java
@@ -15,11 +15,12 @@
* limitations under the License.
*/
-package org.apache.rocketmq.schema.registry.example.serde;
+package org.apache.rocketmq.schema.registry.example.serde.avro;
import org.apache.rocketmq.schema.registry.client.SchemaRegistryClient;
import org.apache.rocketmq.schema.registry.client.SchemaRegistryClientFactory;
import org.apache.rocketmq.schema.registry.client.serde.avro.SpecificAvroSerde;
+import org.apache.rocketmq.schema.registry.example.serde.Charge;
import java.io.IOException;
@@ -27,7 +28,7 @@ public class SpecificAvroSerdeDemo {
public static void main(String[] args) {
- String baseUrl = "http://localhost:8080/schema-registry/v1";;
+ String baseUrl = "http://localhost:8080";;
SchemaRegistryClient schemaRegistryClient =
SchemaRegistryClientFactory.newClient(baseUrl, null);
try (SpecificAvroSerde serde = new
SpecificAvroSerde(schemaRegistryClient)) {
diff --git
a/example/src/main/java/org/apache/rocketmq/schema/registry/example/serde/json/JsonSerdeDemo.java
b/example/src/main/java/org/apache/rocketmq/schema/registry/example/serde/json/JsonSerdeDemo.java
new file mode 100644
index 0000000..7f09de1
--- /dev/null
+++
b/example/src/main/java/org/apache/rocketmq/schema/registry/example/serde/json/JsonSerdeDemo.java
@@ -0,0 +1,69 @@
+/*
+ * 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.rocketmq.schema.registry.example.serde.json;
+
+import org.apache.rocketmq.schema.registry.client.SchemaRegistryClient;
+import org.apache.rocketmq.schema.registry.client.SchemaRegistryClientFactory;
+import
org.apache.rocketmq.schema.registry.client.exceptions.RestClientException;
+import org.apache.rocketmq.schema.registry.client.serde.json.JsonSerde;
+import org.apache.rocketmq.schema.registry.common.dto.RegisterSchemaRequest;
+import org.apache.rocketmq.schema.registry.common.dto.RegisterSchemaResponse;
+import org.apache.rocketmq.schema.registry.common.model.Compatibility;
+import org.apache.rocketmq.schema.registry.common.model.SchemaType;
+import org.apache.rocketmq.schema.registry.example.serde.Person;
+
+import java.io.IOException;
+
+public class JsonSerdeDemo {
+ public static void main(String[] args) {
+
+ String baseUrl = "http://localhost:8080";;
+ SchemaRegistryClient schemaRegistryClient =
SchemaRegistryClientFactory.newClient(baseUrl, null);
+
+ // register schema first, if have registered before ignore
+ String topic = "TopicTest";
+ RegisterSchemaRequest request = RegisterSchemaRequest.builder()
+
.schemaIdl("{\"type\":\"object\",\"properties\":{\"name\":{\"type\":\"string\"},\"age\":{\"type\":\"int\"}}")
+ .schemaType(SchemaType.JSON)
+ .compatibility(Compatibility.BACKWARD)
+ .owner("test").build();
+ try {
+ RegisterSchemaResponse response
+ = schemaRegistryClient.registerSchema(topic, "Person",
request);
+ System.out.println("register schema success, schemaId: " +
response.getRecordId());
+
+ Thread.sleep(5000);
+ System.out.println("current schema: " +
schemaRegistryClient.getSchemaBySubject(topic));
+ } catch (RestClientException | IOException | InterruptedException e) {
+ e.printStackTrace();
+ }
+
+ Person person = new Person(1L, "name", 18);
+ System.out.printf("person before serialize is %s\n", person);
+
+ try(JsonSerde<Person> jsonSerde = new
JsonSerde<>(schemaRegistryClient, Person.class)) {
+ byte[] bytes = jsonSerde.serializer().serialize("TopicTest",
person);
+
+ Person person1 = jsonSerde.deserializer().deserialize("TopicTest",
bytes);
+ System.out.printf("after deserialize new person is %s\n", person1);
+ System.out.printf("person == person1 : %b\n",
person1.equals(person));
+ } catch (IOException e) {
+ System.out.println("serde shutdown failed");
+ }
+ }
+}
