Class: Rack::BertRpc::Server

Inherits:
Object
  • Object
show all
Includes:
Encoding
Defined in:
lib/rack/bert_rpc/server.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Encoding

#error_response, #noreply_response, #read_rpc, #reply_response

Constructor Details

#initialize(logger = nil) ⇒ Server

Returns a new instance of Server.



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# File 'lib/rack/bert_rpc/server.rb', line 12

def initialize(logger = nil)
  @logger = logger
  @mods = {}
end

Instance Attribute Details

#mods ⇒ Object (readonly)

Returns the value of attribute mods.



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# File 'lib/rack/bert_rpc/server.rb', line 10

def mods
  @mods
end

Instance Method Details

#dispatch(mod, fun, args) ⇒ Object 



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# File 'lib/rack/bert_rpc/server.rb', line 58

def dispatch(mod, fun, args)
  if mods[mod].nil?
    raise(ServerError.new("No such module '#{mod}'"))
  end

  mods[mod].call_fun(fun, args)
end

#expose(sym, mod) ⇒ Object 



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# File 'lib/rack/bert_rpc/server.rb', line 17

def expose(sym, mod)
  mods[sym] = Mod.new(mod)
end

#handle(input) ⇒ Object 



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# File 'lib/rack/bert_rpc/server.rb', line 21

def handle(input)
  rpc = read_rpc(input)
  if rpc.nil?
    @logger.error("Invalid rpc request received: '#{input.inspect}'")
    return error_response(:server, "Invalid request: unrecognized")
  end

  if rpc.size == 4 && rpc[0] == :call
    begin
      @logger.debug("RPC Call: '#{rpc.inspect}'")
      resp = dispatch(*rpc[1..3])
      reply_response(resp)
    rescue ServerError => e
      @logger.error("Server error encountered on call: '#{e.inspect}'")
      error_response(:server, e)
    rescue Object => e
      @logger.info("error encountered on call: '#{e.inspect}'")
      error_response(:user, e)
    end
  elsif rpc.size == 4 && rpc[0] == :cast
    begin
      @logger.debug("RPC Call: '#{rpc.inspect}'")
      dispatch(*rpc[1..3])
      noreply_response
    rescue ServerError => e
      @logger.error("Server error encountered on cast: '#{e.inspect}'")
      error_response(:server, e)
    rescue Object => e
      @logger.debug("error encountered on cast: '#{e.inspect}'")
      noreply_response
    end
  else
    @logger.fatal("Unexpected error: '#{e.inspect}'")
    error_response(:server, "Invalid request: #{rpc.inspect}")
  end
end