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org.gramar.storm.gramar:overview [2016/07/03 12:27] chrisgerken created |
org.gramar.storm.gramar:overview [2016/08/08 16:06] (current) chrisgerken |
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The **Storm Topology gramar** generates almost the entire implementation of a Storm topology with the following design patterns and features: | The **Storm Topology gramar** generates almost the entire implementation of a Storm topology with the following design patterns and features: | ||
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+ | - Strong typing of data on streams | ||
+ | - Spout and bolt implementations factored out into three tiers: Storm-aware, Topology-aware and business logic with strongly typed interfaces between tiers | ||
+ | - Diagrams (generated input to Graphviz) of the topology showing Bolts, Spouts, streams and other middleware | ||
+ | - Fully maven-ized project | ||
+ | - Complete topology driver class that reads one of several named property files, builds the topology and submits that topology either to a local cluster or to a Nimbus server | ||
+ | - Java beans with serialization logic | ||
+ | - A Marshaller class used to convert from Java beans to Values and from Tuples back to Java Beans | ||
+ | - Business logic typed by hand is maintained across re-applications of the gramar, making evolution of the topology very fast and inexpensive | ||
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+ | Follow the walk through [[org.gramar.storm.gramar:walkthrough|here]]. | ||
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+ | {{org.gramar.storm.gramar:org.gramar.storm.gramar.png}} | ||
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