co.cask.cdap.data.stream.service.MutableStreamEventData.java Source code

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Here is the source code for co.cask.cdap.data.stream.service.MutableStreamEventData.java

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/*
 * Copyright  2015 Cask Data, Inc.
 *
 * 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 co.cask.cdap.data.stream.service;

import co.cask.cdap.api.stream.StreamEventData;
import co.cask.cdap.common.io.ByteBuffers;
import com.google.common.collect.ImmutableMap;

import java.nio.ByteBuffer;
import java.util.Map;
import javax.annotation.concurrent.NotThreadSafe;

/**
 * A mutable {@link StreamEventData} that allows setting header and body.
 */
@NotThreadSafe
public final class MutableStreamEventData extends StreamEventData {

    private ByteBuffer body;
    private Map<String, String> headers;

    public MutableStreamEventData() {
        super(ImmutableMap.<String, String>of(), ByteBuffers.EMPTY_BUFFER);
        body = ByteBuffers.EMPTY_BUFFER;
        headers = ImmutableMap.of();
    }

    @Override
    public ByteBuffer getBody() {
        return body;
    }

    @Override
    public Map<String, String> getHeaders() {
        return headers;
    }

    public MutableStreamEventData setBody(ByteBuffer body) {
        this.body = body;
        return this;
    }

    public MutableStreamEventData setHeaders(Map<String, String> headers) {
        this.headers = headers;
        return this;
    }
}