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HADOOP-15835. Reuse Object Mapper in KMSJSONWriter (jeagles)

This commit is contained in:
Jonathan Eagles 2018-10-10 10:32:43 -05:00
parent b170de8be5
commit 2b6d8c1e29
1 changed files with 4 additions and 3 deletions
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7
hadoop-common-project/hadoop-kms/src/main/java/org/apache/hadoop/crypto/key/kms/server/KMSJSONWriter.java
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@ -18,7 +18,7 @@
package org.apache.hadoop.crypto.key.kms.server;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.ObjectWriter;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.http.JettyUtils;
@ -46,6 +46,8 @@ import java.util.Map;
@Produces(MediaType.APPLICATION_JSON + "; " + JettyUtils.UTF_8)
@InterfaceAudience.Private
public class KMSJSONWriter implements MessageBodyWriter<Object> {
private static final ObjectWriter WRITER =
new ObjectMapper().writerWithDefaultPrettyPrinter();
@Override
public boolean isWriteable(Class<?> aClass, Type type,
@ -67,8 +69,7 @@ public class KMSJSONWriter implements MessageBodyWriter<Object> {
OutputStream outputStream) throws IOException, WebApplicationException {
Writer writer = new OutputStreamWriter(outputStream, Charset
.forName("UTF-8"));
ObjectMapper jsonMapper = new ObjectMapper();
jsonMapper.writerWithDefaultPrettyPrinter().writeValue(writer, obj);
WRITER.writeValue(writer, obj);
}
}