org.apache.pulsar.client.impl.schema.generic.GenericJsonReader Maven / Gradle / Ivy
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* 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
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* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.pulsar.client.impl.schema.generic;
import static java.nio.charset.StandardCharsets.UTF_8;
import org.apache.pulsar.shade.com.fasterxml.jackson.databind.DeserializationFeature;
import org.apache.pulsar.shade.com.fasterxml.jackson.databind.JsonNode;
import org.apache.pulsar.shade.com.fasterxml.jackson.databind.ObjectReader;
import java.io.IOException;
import java.io.InputStream;
import java.util.List;
import org.apache.pulsar.client.api.SchemaSerializationException;
import org.apache.pulsar.client.api.schema.Field;
import org.apache.pulsar.client.api.schema.GenericRecord;
import org.apache.pulsar.client.api.schema.SchemaReader;
import org.apache.pulsar.common.schema.SchemaInfo;
import org.apache.pulsar.common.util.ObjectMapperFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class GenericJsonReader implements SchemaReader {
private final ObjectReader objectReader;
private final byte[] schemaVersion;
private final List fields;
private SchemaInfo schemaInfo;
public GenericJsonReader(List fields, SchemaInfo schemaInfo){
this(null, fields, schemaInfo);
}
public GenericJsonReader(List fields){
this(fields, null);
}
public GenericJsonReader(byte[] schemaVersion, List fields){
this(schemaVersion, fields, null);
}
public GenericJsonReader(byte[] schemaVersion, List fields, SchemaInfo schemaInfo){
this.fields = fields;
this.schemaVersion = schemaVersion;
this.schemaInfo = schemaInfo;
this.objectReader =
ObjectMapperFactory.getMapper().reader().with(DeserializationFeature.USE_BIG_DECIMAL_FOR_FLOATS);
}
@Override
public GenericJsonRecord read(byte[] bytes, int offset, int length) {
try {
JsonNode jn = objectReader.readTree(new String(bytes, offset, length, UTF_8));
return new GenericJsonRecord(schemaVersion, fields, jn, schemaInfo);
} catch (IOException ioe) {
throw new SchemaSerializationException(ioe);
}
}
@Override
public GenericRecord read(InputStream inputStream) {
try {
JsonNode jn = objectReader.readTree(inputStream);
return new GenericJsonRecord(schemaVersion, fields, jn, schemaInfo);
} catch (IOException ioe) {
throw new SchemaSerializationException(ioe);
} finally {
try {
inputStream.close();
} catch (IOException e) {
log.error("GenericJsonReader close inputStream close error", e);
}
}
}
private static final Logger log = LoggerFactory.getLogger(GenericJsonReader.class);
}