Github user nickwallen commented on a diff in the pull request:
https://github.com/apache/metron/pull/622#discussion_r127326600
--- Diff:
metron-analytics/metron-profiler-client/src/main/java/org/apache/metron/profiler/client/stellar/RowKeyBuilderFactory.java
---
@@ -0,0 +1,125 @@
+/*
+ *
+ * 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.metron.profiler.client.stellar;
+
+import org.apache.commons.beanutils.PropertyUtils;
+import org.apache.commons.lang3.ClassUtils;
+import org.apache.metron.common.utils.ReflectionUtils;
+import org.apache.metron.profiler.hbase.RowKeyBuilder;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.lang.reflect.InvocationTargetException;
+import java.util.Map;
+import java.util.concurrent.TimeUnit;
+
+import static
org.apache.metron.profiler.client.stellar.ProfilerConfig.PROFILER_PERIOD;
+import static
org.apache.metron.profiler.client.stellar.ProfilerConfig.PROFILER_PERIOD_UNITS;
+import static
org.apache.metron.profiler.client.stellar.ProfilerConfig.PROFILER_ROW_KEY_BUILDER;
+import static
org.apache.metron.profiler.client.stellar.ProfilerConfig.PROFILER_SALT_DIVISOR;
+
+/**
+ * A Factory class that can create a RowKeyBuilder based on global
property values.
+ */
+public class RowKeyBuilderFactory {
+
+ private static final Logger LOG =
LoggerFactory.getLogger(RowKeyBuilderFactory.class);
+
+ /**
+ * Create a RowKeyBuilder.
+ * @param global The global properties.
+ * @return A RowKeyBuilder instantiated using the global property values.
+ */
+ public static RowKeyBuilder create(Map<String, Object> global) {
+ String rowKeyBuilderClass = PROFILER_ROW_KEY_BUILDER.get(global,
String.class);
+ LOG.debug("profiler client: {}={}", PROFILER_ROW_KEY_BUILDER,
rowKeyBuilderClass);
+
+ // instantiate the RowKeyBuilder
+ RowKeyBuilder builder =
ReflectionUtils.createInstance(rowKeyBuilderClass);
+ setSaltDivisor(global, builder);
+ setPeriodDuration(global, builder);
--- End diff --
But I think this actually turned out worse, than the alternative of just
adding `RowKeyBuilder.setSaltDivisor` and polluting the interface.
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