/*
* Copyright 2014 NAVER Corp.
*
* 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.navercorp.pinpoint.web.applicationmap;
import com.navercorp.pinpoint.web.applicationmap.histogram.Histogram;
/**
* @author emeroad
*/
public class LinkStateResolver {
public static final LinkStateResolver DEFAULT_LINK_STATE_RESOLVER = new LinkStateResolver();
public static final String BAD = "bad";
public String resolve(Link link) {
if (link == null) {
throw new NullPointerException("link must not be null");
}
// since Histogram dup gets created, we simply accepts as a parameter
// XXX need to fix this
final long error = getErrorRate(link.getHistogram());
if (error * 100 > 10) {
return BAD;
}
return "default";
}
public boolean isAlert(Link link) {
String resolve = resolve(link);
if (BAD.equals(resolve)) {
return true;
}
return false;
}
private long getErrorRate(Histogram histogram) {
if (histogram == null) {
throw new NullPointerException("histogram must not be null");
}
final long totalCount = histogram.getTotalCount();
if (totalCount == 0) {
return 0;
}
return histogram.getTotalErrorCount() / totalCount;
}
}