org.attribyte.relay.NOOPTransformer.java Source code

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Here is the source code for org.attribyte.relay.NOOPTransformer.java

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/*
 * Copyright 2016 Attribyte, LLC
 *
 * Licensed 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.attribyte.relay;

import com.codahale.metrics.Metric;
import com.google.common.collect.ImmutableMap;
import org.attribyte.api.Logger;

import java.util.Map;
import java.util.Properties;

/**
 * A transformer that does nothing but return the input message.
 */
public class NOOPTransformer implements Transformer {

    @Override
    public Message transform(Message message) {
        return message;
    }

    @Override
    public void init(final Supplier supplier, final Properties props, final Logger logger) throws Exception {
    }

    @Override
    public void shutdown() {
    }

    @Override
    public Map<String, Metric> getMetrics() {
        return ImmutableMap.of();
    }

}