com.arpnetworking.metrics.impl.WarningSink Maven / Gradle / Ivy
/**
* Copyright 2015 Groupon.com
*
* 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 com.arpnetworking.metrics.impl;
import com.arpnetworking.metrics.Event;
import com.arpnetworking.metrics.Sink;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.List;
/**
* Implementation of Sink which emits a warning each time an
* Event is to recorded.
*
* @author Ville Koskela (vkoskela at groupon dot com)
*/
/* package private */ final class WarningSink implements Sink {
/**
* Public constructor.
*
* NOTE: This method does not perform a deep copy of the provided
* data structures. Callers are expected to not modify these data
* structures after passing them to this constructor. This is acceptable
* since this class is for internal implementation only.
*
* @param reasons The reasons for the warning.
*/
/* package private */ WarningSink(final List reasons) {
this(reasons, LOGGER);
}
/* package private */ WarningSink(final List reasons, final Logger logger) {
_reasons = reasons;
_logger = logger;
}
/**
* {@inheritDoc}
*/
@Override
public void record(final Event event) {
_logger.warn(String.format(
"Unable to record event, metrics disabled; reasons=%s",
_reasons));
}
/**
* {@inheritDoc}
*/
@Override
public String toString() {
return String.format(
"WarningSink{Reasons=%s}",
_reasons);
}
private final List _reasons;
private final Logger _logger;
private static final Logger LOGGER = LoggerFactory.getLogger(WarningSink.class);
}