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The **Storm Topology gramar** generates almost the entire implementation of a Storm topology with the following design patterns and features: - 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 {{org.gramar.storm.gramar:org.gramar.storm.gramar.png}}
