org.apache.flume.event.EventBuilder.java Source code

Introduction

Here is the source code for org.apache.flume.event.EventBuilder.java

Source

/*
 * 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.flume.event;

import java.nio.charset.Charset;
import java.util.HashMap;
import java.util.Map;

import com.google.common.collect.Maps;
import com.google.common.primitives.Ints;
import com.google.common.primitives.Longs;
import org.apache.flume.Event;

public class EventBuilder {

    /**
     * Instantiate an Event instance based on the provided body and headers.
     * If <code>headers</code> is <code>null</code>, then it is ignored.
     * @param body
     * @param headers
     * @return
     */
    public static Event withBody(byte[] body, Map<String, String> headers) {
        Event event = new SimpleEvent();

        if (body == null) {
            body = new byte[0];
        }
        event.setBody(body);

        if (headers != null) {
            event.setHeaders(new HashMap<String, String>(headers));
        }

        return event;
    }

    public static Event withBody(byte[] body) {
        return withBody(body, null);
    }

    public static Event withBody(long body) {
        Map<String, String> headers = Maps.newHashMap();
        headers.put(Event.bodyType, "long");
        return withBody(Longs.toByteArray(body), headers);
    }

    public static Event withBody(String body, Charset charset, Map<String, String> headers) {

        Map<String, String> newHeaders = null;

        if (headers == null)
            newHeaders = Maps.newHashMap();
        else
            newHeaders = Maps.newHashMap(headers);

        newHeaders.put(Event.bodyType, "string");
        newHeaders.put(Event.bodyCharset, charset.name());

        return withBody(body.getBytes(charset), newHeaders);
    }

    public static Event withBody(String body, Charset charset) {
        return withBody(body, charset, null);
    }

}