com.digitalpebble.stormcrawler.elasticsearch.metrics.IndexPerPeriodMetricsConsumer Maven / Gradle / Ivy
/**
* Licensed to DigitalPebble Ltd under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* DigitalPebble 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 com.digitalpebble.stormcrawler.elasticsearch.metrics;
import java.text.DateFormat;
import java.util.Date;
/**
* Elasticsearch metrics consumer that writes an index per time period. The time
* period is specified by a date formatter supplied by concrete subclasses.
*
* This addresses the deprecation of the TTL functionality. The per-day indices
* can be managed using ES Curator.
*/
abstract class IndexPerPeriodMetricsConsumer extends MetricsConsumer {
/**
* Date format used to append current time 'period' to the base metrics
* index for per-time period indexing.
*
* @return time period date formatter, e.g. "yyyy-MM-dd" for index per day
*/
protected abstract DateFormat getDateFormat();
@Override
protected final String getIndexName() {
return new StringBuilder().append(super.getIndexName()).append("-")
.append(getDateFormat().format(new Date())).toString();
}
}