Examples with OutputEmitterFieldExtractor co.cask.cdap.internal.specification.OutputEmitterFieldExtractor used on opensource projects

Example 1 with OutputEmitterFieldExtractor

use of co.cask.cdap.internal.specification.OutputEmitterFieldExtractor in project cdap by caskdata.

the class DefaultFlowConfigurer method addFlowlet.

@Override
public void addFlowlet(String name, Flowlet flowlet, int instances) {
    Preconditions.checkNotNull(flowlet, UserMessages.getMessage(UserErrors.INVALID_FLOWLET_NULL));
    DefaultFlowletConfigurer flowletConfigurer = new DefaultFlowletConfigurer(flowlet);
    flowlet.configure(flowletConfigurer);
    FlowletSpecification flowletSpecification = flowletConfigurer.createSpecification();
    Map<String, Set<Type>> inputTypes = new HashMap<>();
    Map<String, Set<Type>> outputTypes = new HashMap<>();
    Reflections.visit(flowlet, flowlet.getClass(), new OutputEmitterFieldExtractor(outputTypes), new ProcessMethodExtractor(inputTypes));
    FlowletDefinition flowletDef = new FlowletDefinition(name, inputTypes, outputTypes, flowletSpecification, instances);
    String flowletName = flowletDef.getFlowletSpec().getName();
    Preconditions.checkArgument(instances > 0, String.format(UserMessages.getMessage(UserErrors.INVALID_INSTANCES), flowletName, instances));
    Preconditions.checkArgument(!flowlets.containsKey(flowletName), UserMessages.getMessage(UserErrors.INVALID_FLOWLET_EXISTS), flowletName);
    flowlets.put(flowletName, flowletDef);
    addStreams(flowletConfigurer.getStreams());
    addDatasetSpecs(flowletConfigurer.getDatasetSpecs());
    addDatasetModules(flowletConfigurer.getDatasetModules());
}