/**
* Copyright 2013 Netflix, Inc.
* <p/>
* 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
* <p/>
* http://www.apache.org/licenses/LICENSE-2.0
* <p/>
* 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.netflix.servo.monitor;
import com.netflix.servo.annotations.DataSourceType;
import java.util.concurrent.atomic.AtomicReference;
/**
* A simple informational implementation that maintains a string value.
*/
public final class BasicInformational extends AbstractMonitor<String> implements Informational {
private final AtomicReference<String> info = new AtomicReference<>();
/**
* Creates a new instance of the counter.
*/
public BasicInformational(MonitorConfig config) {
super(config.withAdditionalTag(DataSourceType.INFORMATIONAL));
}
/**
* Set the value to show for this monitor.
*/
public void setValue(String value) {
info.set(value);
}
/**
* {@inheritDoc}
*/
@Override
public String getValue(int pollerIndex) {
return info.get();
}
/**
* {@inheritDoc}
*/
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || !(o instanceof BasicInformational)) {
return false;
}
BasicInformational that = (BasicInformational) o;
String thisInfo = info.get();
String thatInfo = that.info.get();
return config.equals(that.config)
&& (thisInfo == null ? thatInfo == null : thisInfo.equals(thatInfo));
}
/**
* {@inheritDoc}
*/
@Override
public int hashCode() {
int result = config.hashCode();
int infoHashcode = info.get() != null ? info.get().hashCode() : 0;
result = 31 * result + infoHashcode;
return result;
}
/**
* {@inheritDoc}
*/
@Override
public String toString() {
return "BasicInformational{config=" + config + ", info=" + info + '}';
}
}