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erlang_behaviour_trees

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An implementation of behaviour trees in erlang.

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erlang_behaviour_trees src samples tasks get_rack_location_task.erl
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src/samples/tasks/get_rack_location_task.erl 

-module(get_rack_location_task).

-behaviour(bt_task).

-export([

  get_params/0,

  run/3

]).



get_params() ->

  ["rack_id", "rack_location"].



run(#{"rack_id" := RackId_key, "rack_location" := RackLocation_key}, BB, _) -> 

  RackId = blackboard:eval(RackId_key, BB),

  case gproc:lookup_local_name({dummy_rack_location_service, RackId}) of

    undefined ->

      io:format("Failure: couldn't find rack location for ~p because rack locator service not found.~n", [RackId]),

      {failure, BB};

    RackLocationServicePid ->

      Location = dummy_rack_location_service:get_rack_location(RackLocationServicePid),

      io:format("Setting location for rack ~p to ~p~n", [RackId, Location]),

      NewBB = blackboard:write(RackLocation_key, Location, BB),

      {success, NewBB}

  end.