/*
* 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.beam.sdk.testing;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.google.common.io.BaseEncoding;
import java.io.IOException;
import org.apache.beam.sdk.util.SerializableUtils;
/**
* MatcherSerializer is used with Jackson to enable serialization of SerializableMatchers.
*/
class MatcherSerializer extends JsonSerializer<SerializableMatcher<?>> {
@Override
public void serialize(SerializableMatcher<?> matcher, JsonGenerator jsonGenerator,
SerializerProvider serializerProvider) throws IOException, JsonProcessingException {
byte[] out = SerializableUtils.serializeToByteArray(matcher);
String encodedString = BaseEncoding.base64().encode(out);
jsonGenerator.writeStartObject();
jsonGenerator.writeStringField("matcher", encodedString);
jsonGenerator.writeEndObject();
}
}