/*
* Copyright 2011-2013 the original author or authors.
*
* 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.springframework.xd.analytics.metrics.integration;
import java.text.ParseException;
import org.joda.time.format.DateTimeFormat;
import org.joda.time.format.DateTimeFormatter;
import org.joda.time.format.ISODateTimeFormat;
import org.springframework.messaging.Message;
import org.springframework.util.Assert;
import org.springframework.xd.analytics.metrics.core.AggregateCounterRepository;
/**
* @author Luke Taylor
*/
public class AggregateCounterHandler {
private final AggregateCounterRepository aggregateCounterRepository;
private final String counterName;
private DateTimeFormatter dateFormat = ISODateTimeFormat.dateTime();
public AggregateCounterHandler(AggregateCounterRepository aggregateCounterRepository, String counterName) {
Assert.notNull(aggregateCounterRepository, "Aggregate Counter Repository can not be null");
Assert.notNull(counterName, "Counter Name can not be null");
this.aggregateCounterRepository = aggregateCounterRepository;
this.counterName = counterName;
}
public void setDateFormat(String pattern) {
Assert.hasText(pattern, "dateFormat pattern must not be empty");
this.dateFormat = DateTimeFormat.forPattern(pattern);
}
public Message<?> process(Message<?> message, String timeField) throws ParseException {
if (message == null) {
return null;
}
if (timeField == null) {
this.aggregateCounterRepository.increment(counterName);
}
else {
this.aggregateCounterRepository.increment(counterName, 1, dateFormat.parseDateTime(timeField));
}
return message;
}
}