org.apache.flink.runtime.rest.messages.job.metrics.MetricsAggregationParameter Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF 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 org.apache.flink.runtime.rest.messages.job.metrics;
import org.apache.flink.runtime.rest.messages.ConversionException;
import org.apache.flink.runtime.rest.messages.MessageQueryParameter;
import org.apache.flink.util.StringUtils;
import java.util.Locale;
/**
* TODO: add javadoc.
*/
public class MetricsAggregationParameter extends MessageQueryParameter {
protected MetricsAggregationParameter() {
super("agg", MessageParameterRequisiteness.OPTIONAL);
}
@Override
public AggregationMode convertStringToValue(String value) throws ConversionException {
try {
return AggregationMode.valueOf(value.toUpperCase(Locale.ROOT));
} catch (IllegalArgumentException iae) {
throw new ConversionException("Not a valid aggregation: " + value, iae);
}
}
@Override
public String convertValueToString(AggregationMode value) {
return value.name().toLowerCase();
}
@Override
public String getDescription() {
return "Comma-separated list of aggregation modes which should be calculated. " +
"Available aggregations are: " + StringUtils.toQuotedListString(AggregationMode.values()) + '.';
}
/**
* The available aggregations.
*/
public enum AggregationMode {
MIN,
MAX,
SUM,
AVG
}
}