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