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From GitBox <...@apache.org>
Subject [GitHub] [cassandra] dcapwell commented on a change in pull request #524: CASSANDRA-15704 Add client request size metrics
Date Wed, 08 Apr 2020 01:51:50 GMT
dcapwell commented on a change in pull request #524: CASSANDRA-15704 Add client request size
metrics
URL: https://github.com/apache/cassandra/pull/524#discussion_r405212459
 
 

 ##########
 File path: src/java/org/apache/cassandra/metrics/ClientRequestSizeMetrics.java
 ##########
 @@ -0,0 +1,36 @@
+/*
+  * 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.cassandra.metrics;
+
+
+import static org.apache.cassandra.metrics.CassandraMetricsRegistry.Metrics;
+
+import com.codahale.metrics.Counter;
+import com.codahale.metrics.Histogram;
+
+/**
+ * Metrics to track the size of incoming and outgoing bytes at Cassandra server.
+ */
+public class ClientRequestSizeMetrics
+{
+    private static final String TYPE = "ClientRequestSize";
+    public static final Counter totalBytesRead = Metrics.counter(DefaultNameFactory.createMetricName(TYPE,
"IncomingBytes", null));
+    public static final Counter totalBytesWritten = Metrics.counter(DefaultNameFactory.createMetricName(TYPE,
"OutgoingBytes", null));
+    public static final Histogram bytesReadPerQueryHistogram = Metrics.histogram(DefaultNameFactory.createMetricName(TYPE,
"BytesReadPerQuery", null), true);
 
 Review comment:
   Read == decode, written == encode, that makes sense but this could also be confusing. 
Maybe rename to something like `BytesReceivedPerFrame` and `BytesTransmittedPerFrame`?

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