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From GitBox <...@apache.org>
Subject [GitHub] [ignite] nizhikov commented on a change in pull request #6845: IGNITE-12145: Monitoring list engine.
Date Thu, 12 Sep 2019 08:58:34 GMT
nizhikov commented on a change in pull request #6845: IGNITE-12145: Monitoring list engine.
URL: https://github.com/apache/ignite/pull/6845#discussion_r323629603
 
 

 ##########
 File path: modules/core/src/main/java/org/apache/ignite/internal/processors/metric/list/MonitoringListAdapter.java
 ##########
 @@ -0,0 +1,72 @@
+/*
+ * 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.ignite.internal.processors.metric.list;
+
+import java.util.Iterator;
+import java.util.concurrent.ConcurrentMap;
+import java.util.function.Function;
+import org.apache.ignite.spi.metric.list.MonitoringRow;
+import org.apache.ignite.spi.metric.list.MonitoringRowAttributeWalker;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Monitoring list backed by {@code data} {@link ConcurrentMap}.
+ */
+public class MonitoringListAdapter<R extends MonitoringRow, D> extends AbstractMonitoringList<R>
{
+    /** Data backed by this list. */
+    private final ConcurrentMap<?, D> data;
 
 Review comment:
   We don't need a `Collection` backed implementation of monitoring list for now.
   If we need it in the future, we will rework this code.
   In the previous comments, you propose do not create code, we don't need right now.
   
   For now, all we need is an implementation that backed some `ConcurrentMap`.

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