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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-4389) Expose metrics to Webfrontend
Date Thu, 18 Aug 2016 15:17:20 GMT

    [ https://issues.apache.org/jira/browse/FLINK-4389?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15426620#comment-15426620
] 

ASF GitHub Bot commented on FLINK-4389:
---------------------------------------

Github user tillrohrmann commented on a diff in the pull request:

    https://github.com/apache/flink/pull/2363#discussion_r75328166
  
    --- Diff: flink-runtime-web/src/main/java/org/apache/flink/runtime/webmonitor/metrics/AbstractMetricsHandler.java
---
    @@ -0,0 +1,124 @@
    +/*
    + * 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.webmonitor.metrics;
    +
    +import com.fasterxml.jackson.core.JsonGenerator;
    +import org.apache.flink.runtime.instance.ActorGateway;
    +import org.apache.flink.runtime.webmonitor.handlers.JsonFactory;
    +import org.apache.flink.runtime.webmonitor.handlers.RequestHandler;
    +import org.apache.flink.util.Preconditions;
    +
    +import java.io.IOException;
    +import java.io.StringWriter;
    +import java.util.Map;
    +
    +/**
    + * Abstract request handler that returns a list of all available metrics or the values
for a set of metrics.
    + *
    + * If the query parameters do not contain a "get" parameter the list of all metrics is
returned.
    + * {@code {"available": [ { "name" : "X", "id" : "X" } ] } }
    --- End diff --
    
    `"name" : "X"` won't be written, will it?


> Expose metrics to Webfrontend
> -----------------------------
>
>                 Key: FLINK-4389
>                 URL: https://issues.apache.org/jira/browse/FLINK-4389
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Metrics, Webfrontend
>    Affects Versions: 1.1.0
>            Reporter: Chesnay Schepler
>            Assignee: Chesnay Schepler
>             Fix For: pre-apache
>
>
> https://cwiki.apache.org/confluence/display/FLINK/FLIP-7%3A+Expose+metrics+to+WebInterface



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