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ASF GitHub Bot commented on FLINK-4920: --------------------------------------- Github user KurtYoung commented on a diff in the pull request: https://github.com/apache/flink/pull/3080#discussion_r95547940 --- Diff: flink-scala/src/main/scala/org/apache/flink/api/scala/metrics/ScalaGauge.scala --- @@ -0,0 +1,31 @@ +/* + * 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.api.scala.metrics + +import org.apache.flink.metrics.Gauge + +class ScalaGauge[T]( func: () => T ) extends Gauge[T] { + override def getValue: T = { + return func() --- End diff -- return can be removed > Add a Scala Function Gauge > -------------------------- > > Key: FLINK-4920 > URL: https://issues.apache.org/jira/browse/FLINK-4920 > Project: Flink > Issue Type: Improvement > Components: Metrics, Scala API > Reporter: Stephan Ewen > Assignee: Pattarawat Chormai > Labels: easyfix, starter > > A useful metrics utility for the Scala API would be to add a Gauge that > obtains its value by calling a Scala Function0. > That way, one can add Gauges in Scala programs using Scala lambda notation or > function references. -- This message was sent by Atlassian JIRA (v6.3.4#6332)