Github user revans2 commented on a diff in the pull request:
https://github.com/apache/storm/pull/2289#discussion_r135307748
--- Diff:
examples/storm-loadgen/src/main/java/org/apache/storm/loadgen/InputStream.java
---
@@ -0,0 +1,263 @@
+/**
+ * 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.loadgen;
+
+import java.io.ByteArrayInputStream;
+import java.io.ObjectInputStream;
+import java.io.Serializable;
+import java.util.HashMap;
+import java.util.Map;
+import org.apache.storm.generated.GlobalStreamId;
+import org.apache.storm.generated.Grouping;
+import org.apache.storm.grouping.PartialKeyGrouping;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * A set of measurements about a stream so we can statistically reproduce
it.
+ */
+public class InputStream implements Serializable {
+ private static final Logger LOG =
LoggerFactory.getLogger(InputStream.class);
+ public final String fromComponent;
+ public final String toComponent;
+ public final String id;
+ public final NormalDistStats execTime;
+ public final NormalDistStats processTime;
+ public final GroupingType groupingType;
+ //Cached GlobalStreamId
+ private GlobalStreamId gsid = null;
+
+ /**
+ * Create an output stream from a config.
+ * @param conf the config to read from.
+ * @return the read OutputStream.
+ */
+ public static InputStream fromConf(Map<String, Object> conf) {
+ String component = (String) conf.get("from");
+ String toComp = (String) conf.get("to");
+ NormalDistStats execTime = NormalDistStats.fromConf((Map<String,
Object>) conf.get("execTime"));
+ NormalDistStats processTime =
NormalDistStats.fromConf((Map<String, Object>) conf.get("processTime"));
+ Map<String, Object> grouping = (Map<String, Object>)
conf.get("grouping");
+ GroupingType groupingType = GroupingType.fromConf((String)
grouping.get("type"));
+ String streamId = (String) grouping.getOrDefault("streamId",
"default");
+ return new InputStream(component, toComp, streamId, execTime,
processTime, groupingType);
+ }
+
+ /**
+ * Convert this to a conf.
+ * @return the conf.
+ */
+ public Map<String, Object> toConf() {
+ Map<String, Object> ret = new HashMap<>();
+ ret.put("from", fromComponent);
+ ret.put("to", toComponent);
+ ret.put("execTime", execTime.toConf());
+ ret.put("processTime", processTime.toConf());
+
+ Map<String, Object> grouping = new HashMap<>();
+ grouping.put("streamId", id);
+ grouping.put("type", groupingType.toConf());
+ ret.put("grouping", grouping);
+
+ return ret;
+ }
+
+ public static class Builder {
+ private String fromComponent;
+ private String toComponent;
+ private String id;
+ private NormalDistStats execTime;
+ private NormalDistStats processTime;
+ private GroupingType groupingType = GroupingType.SHUFFLE;
+
+ public String getFromComponent() {
--- End diff --
No they don't but it was the most convenient way to pull out the needed
information while still building the object.
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