Class PythonShellMetricsBolt

java.lang.Object
org.apache.storm.task.ShellBolt
org.apache.storm.testing.PythonShellMetricsBolt
All Implemented Interfaces:
Serializable, IBolt, IComponent, IRichBolt

public class PythonShellMetricsBolt extends ShellBolt implements IRichBolt
See Also:
  • Constructor Details

    • PythonShellMetricsBolt

      public PythonShellMetricsBolt(String[] args)
    • PythonShellMetricsBolt

      public PythonShellMetricsBolt(String command, String file)
  • Method Details

    • prepare

      public void prepare(Map<String,Object> topoConf, TopologyContext context, OutputCollector collector)
      Description copied from interface: IBolt
      Called when a task for this component is initialized within a worker on the cluster. It provides the bolt with the environment in which the bolt executes.

      This includes the:

      Specified by:
      prepare in interface IBolt
      Overrides:
      prepare in class ShellBolt
      Parameters:
      topoConf - The Storm configuration for this bolt. This is the configuration provided to the topology merged in with cluster configuration on this machine.
      context - This object can be used to get information about this task's place within the topology, including the task id and component id of this task, input and output information, etc.
      collector - The collector is used to emit tuples from this bolt. Tuples can be emitted at any time, including the prepare and cleanup methods. The collector is thread-safe and should be saved as an instance variable of this bolt object.
    • declareOutputFields

      public void declareOutputFields(OutputFieldsDeclarer declarer)
      Description copied from interface: IComponent
      Declare the output schema for all the streams of this topology.
      Specified by:
      declareOutputFields in interface IComponent
      Parameters:
      declarer - this is used to declare output stream ids, output fields, and whether or not each output stream is a direct stream
    • getComponentConfiguration

      public Map<String,Object> getComponentConfiguration()
      Description copied from interface: IComponent
      Declare configuration specific to this component. Only a subset of the "topology.*" configs can be overridden. The component configuration can be further overridden when constructing the topology using TopologyBuilder
      Specified by:
      getComponentConfiguration in interface IComponent