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From pravsingh <...@git.apache.org>
Subject [GitHub] zookeeper pull request #582: ZOOKEEPER-3103 Pluggable metrics system for Zoo...
Date Fri, 27 Jul 2018 21:26:12 GMT
Github user pravsingh commented on a diff in the pull request:

    https://github.com/apache/zookeeper/pull/582#discussion_r205902926
  
    --- Diff: src/java/main/org/apache/zookeeper/metrics/Gauge.java ---
    @@ -0,0 +1,35 @@
    +/**
    + * 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.zookeeper.metrics;
    +
    +/**
    + * A Gauge is an application provided object which will be called by the framework in
order to sample the value
    + * of an integer value.
    + */
    +public interface Gauge {
    +
    +    /**
    +     * Returns the current value associated with this gauge.
    +     * The MetricsProvider will call this callback without taking care of synchronization,
it is up to the application
    +     * to handle thread safety.
    +     *
    +     * @return the current value for the gauge
    +     */
    +    public long getCurrentValue();
    --- End diff --
    
    no public.


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