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https://issues.apache.org/jira/browse/STORM-1252?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15169131#comment-15169131
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ASF GitHub Bot commented on STORM-1252:
---------------------------------------
Github user revans2 commented on a diff in the pull request:
https://github.com/apache/storm/pull/1147#discussion_r54251940
--- Diff: storm-core/src/jvm/org/apache/storm/stats/CommonStats.java ---
@@ -0,0 +1,105 @@
+/**
+ * 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.storm.stats;
+
+import java.util.HashMap;
+import java.util.Map;
+import org.apache.storm.metric.api.IMetric;
+import org.apache.storm.metric.internal.MultiCountStatAndMetric;
+import org.apache.storm.metric.internal.MultiLatencyStatAndMetric;
+
+@SuppressWarnings("unchecked")
+public class CommonStats {
+ public static final int NUM_STAT_BUCKETS = 20;
+
+ public static final String RATE = "rate";
+
+ public static final String EMITTED = "emitted";
+ public static final String TRANSFERRED = "transferred";
+ public static final String[] COMMON_FIELDS = {EMITTED, TRANSFERRED};
+
+ protected int rate;
+ protected final Map metricMap = new HashMap();
+
+ public CommonStats() {
+ put(EMITTED, new MultiCountStatAndMetric(NUM_STAT_BUCKETS));
+ put(TRANSFERRED, new MultiCountStatAndMetric(NUM_STAT_BUCKETS));
+ }
+
+ public int getRate() {
+ return this.rate;
+ }
+
+ public void setRate(int rate) {
+ this.rate = rate;
+ }
+
+ public MultiCountStatAndMetric getEmitted() {
+ return (MultiCountStatAndMetric) get(EMITTED);
+ }
+
+ public MultiCountStatAndMetric getTransferred() {
+ return (MultiCountStatAndMetric) get(TRANSFERRED);
+ }
+
+ public IMetric get(String field) {
+ return (IMetric) StatsUtil.getByKeyword(metricMap, field);
+ }
+
+ protected void put(String field, Object value) {
+ StatsUtil.putRawKV(metricMap, field, value);
+ }
+
+ public void emittedTuple(String stream) {
+ this.getEmitted().incBy(stream, this.rate);
+ }
+
+ public void transferredTuples(String stream, int amount) {
+ this.getTransferred().incBy(stream, this.rate * amount);
+ }
+
+ protected void cleanupStats() {
--- End diff --
This could be updated to just go off of all of the keys in metricMap.
There would be no need for subclasses to override this.
> port backtype.storm.stats to java
> ---------------------------------
>
> Key: STORM-1252
> URL: https://issues.apache.org/jira/browse/STORM-1252
> Project: Apache Storm
> Issue Type: New Feature
> Components: storm-core
> Reporter: Robert Joseph Evans
> Assignee: Cody
> Labels: java-migration, jstorm-merger
>
> clojure methods for getting/setting built-in statistics. Mostly wrappers
> around some java classes.
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