/*
* 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.hadoop.hive.ql.parse.repl.dump.io;
import org.apache.hadoop.hive.metastore.api.Database;
import org.apache.hadoop.hive.ql.ErrorMsg;
import org.apache.hadoop.hive.ql.parse.ReplicationSpec;
import org.apache.hadoop.hive.ql.parse.SemanticException;
import org.apache.thrift.TException;
import org.apache.thrift.TSerializer;
import org.apache.thrift.protocol.TJSONProtocol;
import java.io.IOException;
public class DBSerializer implements JsonWriter.Serializer {
public static final String FIELD_NAME = "db";
private final Database dbObject;
public DBSerializer(Database dbObject) {
this.dbObject = dbObject;
}
@Override
public void writeTo(JsonWriter writer, ReplicationSpec additionalPropertiesProvider)
throws SemanticException, IOException {
dbObject.putToParameters(
ReplicationSpec.KEY.CURR_STATE_ID.toString(),
additionalPropertiesProvider.getCurrentReplicationState()
);
TSerializer serializer = new TSerializer(new TJSONProtocol.Factory());
try {
String value = serializer.toString(dbObject, UTF_8);
writer.jsonGenerator.writeStringField(FIELD_NAME, value);
} catch (TException e) {
throw new SemanticException(ErrorMsg.ERROR_SERIALIZE_METASTORE.getMsg(), e);
}
}
}