Class: InvocationContext

Inherits:
AbstractInvocationContext show all
Includes:
Enumerable
Defined in:
lib/hypertube-ruby-sdk/sdk/invocation_context.rb

Overview

InvocationContext is a class that represents a context for invoking commands. It implements several interfaces for different types of interactions. This class is used to construct chains of invocations, representing expressions of interaction that have not yet been executed.

See Also:

  • to this {https://www.hypertube.dev/guides/v2/ruby/foundations/invocation-context article on Hypertube Guides}

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from AbstractInvocationContext

#get_enum_item

Constructor Details

#initialize(runtime_name, connection_type, tcp_ip_address, command, is_executed = false, is_stateless = false) ⇒ InvocationContext

Returns a new instance of InvocationContext.



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# File 'lib/hypertube-ruby-sdk/sdk/invocation_context.rb', line 18

def initialize(runtime_name, connection_type, tcp_ip_address, command, is_executed = false, is_stateless = false)
  @is_executed = is_executed
  @is_stateless = is_stateless
  @runtime_name = runtime_name
  @connection_type = connection_type
  @tcp_ip_address = tcp_ip_address
  @current_command = command
  @response_command = nil
  # generates error: ruby/lib/RuntimeBridge.rb-ruby-sdk/sdk/internal/invocation_context.rb:17: warning: finalizer references object to be finalized
  # ObjectSpace.define_finalizer(self, self.finalize(@current_command, @is_executed, @interpreter, @connection_type, @tcp_ip_address))
end

Instance Attribute Details

#current_command ⇒ Object (readonly)

Returns the value of attribute current_command.



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# File 'lib/hypertube-ruby-sdk/sdk/invocation_context.rb', line 16

def current_command
  @current_command
end

#response_command ⇒ Object (readonly)

Returns the value of attribute response_command.



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# File 'lib/hypertube-ruby-sdk/sdk/invocation_context.rb', line 16

def response_command
  @response_command
end

Instance Method Details

#[](*indexes) ⇒ Object 



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# File 'lib/hypertube-ruby-sdk/sdk/invocation_context.rb', line 48

def [](*indexes)
  get_index(*indexes).execute
end

#[]=(*indexes_and_value) ⇒ Object 



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# File 'lib/hypertube-ruby-sdk/sdk/invocation_context.rb', line 52

def []=(*indexes_and_value)
  value = indexes_and_value.pop
  set_index(indexes_and_value, value).execute
end

#build_command(command) ⇒ Object 



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# File 'lib/hypertube-ruby-sdk/sdk/invocation_context.rb', line 388

def build_command(command)
  return @current_command if command.nil? || command.payload.nil?

  command.payload.each_index do |i|
    command.payload[i] = encapsulate_payload_item(command.payload[i])
  end
  command.prepend_arg_to_payload(@current_command)
end

#build_invocation_context(local_command) ⇒ Object 



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# File 'lib/hypertube-ruby-sdk/sdk/invocation_context.rb', line 383

def build_invocation_context(local_command)
  InvocationContext.new(@runtime_name, @connection_type, @tcp_ip_address, build_command(local_command), @is_executed,
                        @is_stateless)
end

#create_instance(*args) ⇒ InvocationContext

Creates a new instance of a class in the target runtime. Invokes a constructor on the target runtime and registers the returned context for updates.

Parameters:

  • args (Array) —

    The arguments to class constructor

Returns:

  • (InvocationContext) —

    A new InvocationContext instance that wraps the command to create the instance.

See Also:



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# File 'lib/hypertube-ruby-sdk/sdk/invocation_context.rb', line 144

def create_instance(*args)
  local_command = Command.new(@runtime_name, CommandType::CREATE_CLASS_INSTANCE, [*args])
  create_instance_inv_ctx = InvocationContext.new(@runtime_name, @connection_type, @tcp_ip_address,
                                                  build_command(local_command), @is_executed, @is_stateless)

  # create_instance_inv_ctx.register_for_update
  create_instance_inv_ctx
end

#create_null ⇒ InvocationContext

Creates a null object of a specific type in the target runtime.

Returns:

  • (InvocationContext) —

    An InvocationContext instance with the command to create a null object.

See Also:

  • to this {https://www.hypertube.dev/guides/v2/ruby/null-handling/create-null-object article on Hypertube Guides}


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# File 'lib/hypertube-ruby-sdk/sdk/invocation_context.rb', line 299

def create_null
  local_command = Command.new(@runtime_name, CommandType::CREATE_NULL, [])
  build_invocation_context(local_command)
end

#encapsulate_payload_item(payload_item) ⇒ Object 



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# File 'lib/hypertube-ruby-sdk/sdk/invocation_context.rb', line 397

def encapsulate_payload_item(payload_item)
  if payload_item.is_a? Command
    if payload_item.command_type == CommandType::VALUE || payload_item.command_type == CommandType::ARRAY
      return payload_item
    end

    payload_item.payload.each_index do |i|
      payload_item.payload[i] = encapsulate_payload_item(payload_item.payload[i])
    end
    payload_item

  elsif payload_item.is_a? InvocationContext
    payload_item.current_command

  elsif payload_item.is_a? Array
    copied_array = payload_item.map { |item| encapsulate_payload_item(item) }
    Command.new(@runtime_name, CommandType::ARRAY, copied_array)
  elsif TypesHandler.primitive_or_none?(payload_item)
    Command.new(@runtime_name, CommandType::VALUE, payload_item.nil? ? [nil] : [*payload_item])
  else
    raise TypeError, "Unsupported payload item type: #{payload_item.class} for payload item: #{payload_item}."
  end
end

#execute ⇒ InvocationContext

Executes the current command. Because invocation context is building the intent of executing particular expression on target environment, we call the initial state of invocation context as non-materialized. The non-materialized context wraps either single command or chain of recursively nested commands. Commands are becoming nested through each invocation of methods on Invocation Context. Each invocation triggers the creation of new Invocation Context instance wrapping the current command with new parent command valid for invoked method. Developer can decide on any moment of the materialization for the context taking full control of the chunks of the expression being transferred and processed on target runtime.

Returns:

See Also:

  • to this {https://www.hypertube.dev/guides/v2/ruby/foundations/execute-method article on Hypertube Guides}


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# File 'lib/hypertube-ruby-sdk/sdk/invocation_context.rb', line 65

def execute
  raise 'currentCommand is undefined in InvocationContext execute method' if @current_command.nil?

  return self if @is_stateless && @current_command.command_type != CommandType::PASS_BY_VALUE

  @response_command = Interpreter.execute(@current_command, @connection_type, @tcp_ip_address)

  if @response_command.command_type == CommandType::EXCEPTION
    exception = ExceptionThrower.throw_exception(@response_command)
    SdkMessageHelper.send_message_to_app_insights('SdkException', exception.message)
    raise(exception)
  end

  if @current_command.command_type == CommandType::CREATE_CLASS_INSTANCE
    @current_command = @response_command
    @is_executed = true
    return self
  end

  @response_command = process_update_invocation_context_commands(@response_command) unless @is_stateless

  InvocationContext.new(@runtime_name, @connection_type, @tcp_ip_address, @response_command, true, @is_stateless)
end

#execute_async ⇒ Object 



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# File 'lib/hypertube-ruby-sdk/sdk/invocation_context.rb', line 89

def execute_async
  Thread.new do
    execute
  end
end

#get_enum_name ⇒ InvocationContext

Retrieves the name of an enum from the target runtime.

Returns:

  • (InvocationContext) —

    A new InvocationContext instance that wraps the command to get the enum name.

See Also:

  • to this {https://www.hypertube.dev/guides/v2/ruby/enums/using-enum-type article on Hypertube Guides}


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# File 'lib/hypertube-ruby-sdk/sdk/invocation_context.rb', line 275

def get_enum_name
  local_command = Command.new(@runtime_name, CommandType::GET_ENUM_NAME, [])
  build_invocation_context(local_command)
end

#get_enum_value ⇒ InvocationContext

Retrieves the value of an enum from the target runtime.

Returns:

  • (InvocationContext) —

    A new InvocationContext instance that wraps the command to get the enum value.

See Also:

  • to this {https://www.hypertube.dev/guides/v2/ruby/enums/using-enum-type article on Hypertube Guides}


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# File 'lib/hypertube-ruby-sdk/sdk/invocation_context.rb', line 283

def get_enum_value
  local_command = Command.new(@runtime_name, CommandType::GET_ENUM_VALUE, [])
  build_invocation_context(local_command)
end

#get_index(*indexes) ⇒ InvocationContext

Retrieves the value at a specific indexes in an array from the target runtime.

Parameters:

  • indexes (Array) —

    The indexes to pass to the get index command.

Returns:

  • (InvocationContext) —

    A new InvocationContext instance that wraps the command to get the index.

See Also:

  • to this {https://www.hypertube.dev/guides/v2/ruby/arrays-and-collections/one-dimensional-arrays article on Hypertube Guides}


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# File 'lib/hypertube-ruby-sdk/sdk/invocation_context.rb', line 221

def get_index(*indexes)
  local_command = Command.new(@runtime_name, CommandType::ARRAY_GET_ITEM, [*indexes])
  build_invocation_context(local_command)
end

#get_instance_field(field_name) ⇒ InvocationContext

Retrieves the value of an instance field from the target runtime.

Parameters:

  • field_name (String) —

    The name of the instance field to get.

Returns:

  • (InvocationContext) —

    A new InvocationContext instance that wraps the command to get the instance field.

See Also:

  • to this {https://www.hypertube.dev/guides/v2/ruby/fields-and-properties/getting-and-setting-values-for-instance-fields-and-properties article on Hypertube Guides}


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# File 'lib/hypertube-ruby-sdk/sdk/invocation_context.rb', line 176

def get_instance_field(field_name)
  if @is_stateless
    value = GetInstanceFieldHelper.get_field_value(@current_command, field_name)
    return_command =
      if TypesHandler.primitive_or_none?(value)
        Command.new(@runtime_name, CommandType::VALUE, value)
      elsif value.is_a?(Command)
        value
      else
        raise ArgumentError, "Unsupported type for stateless get_instance_field: #{value.class}"
      end

    return InvocationContext.new(
      @runtime_name,
      @connection_type,
      @tcp_ip_address,
      return_command,
      false,
      @is_stateless
    )
  end

  local_command = Command.new(@runtime_name, CommandType::GET_INSTANCE_FIELD, [field_name])
  build_invocation_context(local_command)
end

#get_instance_method_as_delegate(method_name, *args) ⇒ InvocationContext

Retrieves an instance method as a delegate from the target runtime. # @see Refer to this article on Hypertube Guides

Parameters:

  • method_name (String) —

    The name of the instance method to retrieve as a delegate.

  • args (Array) —

    The arguments to pass to the instance method.

Returns:

  • (InvocationContext) —

    An InvocationContext instance with the command to get the instance method as a delegate.



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# File 'lib/hypertube-ruby-sdk/sdk/invocation_context.rb', line 319

def get_instance_method_as_delegate(method_name, *args)
  local_command = Command.new(@runtime_name, CommandType::GET_INSTANCE_METHOD_AS_DELEGATE, [method_name, *args])
  build_invocation_context(local_command)
end

#get_rank ⇒ InvocationContext

Retrieves the rank of an array from the target runtime.

Returns:

  • (InvocationContext) —

    A new InvocationContext instance that wraps the command to get the rank.

See Also:

  • to this {https://www.hypertube.dev/guides/v2/ruby/arrays-and-collections/multidimensional-arrays article on Hypertube Guides}


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# File 'lib/hypertube-ruby-sdk/sdk/invocation_context.rb', line 247

def get_rank
  local_command = Command.new(@runtime_name, CommandType::ARRAY_GET_RANK, [])
  build_invocation_context(local_command)
end

#get_ref_value ⇒ InvocationContext

Retrieves the value of a reference from the target runtime.

Returns:

  • (InvocationContext) —

    A new InvocationContext instance that wraps the command to get the ref value.

See Also:

  • to this {https://www.hypertube.dev/guides/v2/ruby/methods-arguments/passing-arguments-by-reference-with-ref-keyword article on Hypertube Guides}


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# File 'lib/hypertube-ruby-sdk/sdk/invocation_context.rb', line 291

def get_ref_value
  local_command = Command.new(@runtime_name, CommandType::GET_REF_VALUE, [])
  build_invocation_context(local_command)
end

#get_size ⇒ InvocationContext

Retrieves the number of elements from the target runtime.

Returns:

  • (InvocationContext) —

    A new InvocationContext instance that wraps the command to get the size.

See Also:

  • to this {https://www.hypertube.dev/guides/v2/ruby/arrays-and-collections/one-dimensional-arrays article on Hypertube Guides}


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# File 'lib/hypertube-ruby-sdk/sdk/invocation_context.rb', line 239

def get_size
  local_command = Command.new(@runtime_name, CommandType::ARRAY_GET_SIZE, [])
  build_invocation_context(local_command)
end

#get_static_field(field_name) ⇒ InvocationContext

Retrieves the value of a static field from the target runtime.

Parameters:

  • field_name (String) —

    The name of the static field to get.

Returns:

  • (InvocationContext) —

    A new InvocationContext instance that wraps the command to get the static field.

See Also:

  • to this {https://www.hypertube.dev/guides/v2/ruby/fields-and-properties/getting-and-setting-values-for-static-fields-and-properties article on Hypertube Guides}


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# File 'lib/hypertube-ruby-sdk/sdk/invocation_context.rb', line 157

def get_static_field(field_name)
  local_command = Command.new(@runtime_name, CommandType::GET_STATIC_FIELD, [field_name])
  build_invocation_context(local_command)
end

#get_static_method_as_delegate(method_name, *args) ⇒ InvocationContext

Retrieves a static method as a delegate from the target runtime.

Parameters:

  • method_name (String) —

    The name of the static method to retrieve as a delegate.

  • args (Array) —

    The arguments to pass to the static method.

Returns:

  • (InvocationContext) —

    An InvocationContext instance with the command to get the static method as a delegate.

See Also:

  • to this {https://www.hypertube.dev/guides/v2/ruby/delegates-and-events/using-delegates article on Hypertube Guides}


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# File 'lib/hypertube-ruby-sdk/sdk/invocation_context.rb', line 309

def get_static_method_as_delegate(method_name, *args)
  local_command = Command.new(@runtime_name, CommandType::GET_STATIC_METHOD_AS_DELEGATE, [method_name, *args])
  build_invocation_context(local_command)
end

#get_value ⇒ Object

Retrieves the value of the current command from the target runtime.

Returns:

  • (Object) —

    The value of the current command.

See Also:



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# File 'lib/hypertube-ruby-sdk/sdk/invocation_context.rb', line 367

def get_value
  return @current_command.payload[0] if @current_command.command_type == CommandType::VALUE &&
                                          TypesHandler.primitive_or_none?(@current_command.payload[0])
  self
end

#invoke_generic_method(method_name, *args) ⇒ InvocationContext

Invokes a generic method on the target runtime.

Parameters:

  • method_name (String) —

    The name of the generic method to invoke.

  • args (Array) —

    The arguments to pass to the generic method.

Returns:

  • (InvocationContext) —

    A new InvocationContext instance that wraps the command to invoke the generic method.

See Also:

  • to this {https://www.hypertube.dev/guides/v2/ruby/generics/calling-generic-instance-method article on Hypertube Guides}


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# File 'lib/hypertube-ruby-sdk/sdk/invocation_context.rb', line 267

def invoke_generic_method(method_name, *args)
  local_command = Command.new(@runtime_name, CommandType::INVOKE_GENERIC_METHOD, [method_name, *args])
  build_invocation_context(local_command)
end

#invoke_generic_static_method(method_name, *args) ⇒ InvocationContext

Invokes a generic static method on the target runtime.

Parameters:

  • method_name (String) —

    The name of the generic static method to invoke.

  • args (Array) —

    The arguments to pass to the generic static method.

Returns:

  • (InvocationContext) —

    A new InvocationContext instance that wraps the command to invoke the generic static method.

See Also:

  • to this {https://www.hypertube.dev/guides/v2/ruby/generics/calling-generic-static-method article on Hypertube Guides}


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# File 'lib/hypertube-ruby-sdk/sdk/invocation_context.rb', line 257

def invoke_generic_static_method(method_name, *args)
  local_command = Command.new(@runtime_name, CommandType::INVOKE_GENERIC_STATIC_METHOD, [method_name, *args])
  build_invocation_context(local_command)
end

#invoke_instance_method(method_name, *args) ⇒ InvocationContext

Invokes an instance method on the target runtime.

Parameters:

  • method_name (String) —

    The name of the instance method to invoke.

  • args (Array) —

    The arguments to pass to the instance method.

Returns:

  • (InvocationContext) —

    A new InvocationContext instance that wraps the command to invoke the instance method.

See Also:

  • to this {https://www.hypertube.dev/guides/v2/ruby/calling-methods/creating-instance-and-calling-instance-methods article on Hypertube Guides}


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# File 'lib/hypertube-ruby-sdk/sdk/invocation_context.rb', line 134

def invoke_instance_method(method_name, *args)
  local_command = Command.new(@runtime_name, CommandType::INVOKE_INSTANCE_METHOD, [method_name, *args])
  build_invocation_context(local_command)
end

#invoke_static_method(method_name, *args) ⇒ InvocationContext

Invokes a static method on the target runtime.

Parameters:

  • method_name (String) —

    The name of the static method to invoke.

  • args (Array) —

    The arguments to pass to the static method.

Returns:

  • (InvocationContext) —

    A new InvocationContext instance that wraps the command to invoke the static method.

See Also:

  • to this {https://www.hypertube.dev/guides/v2/ruby/calling-methods/invoking-static-method article on Hypertube Guides}


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# File 'lib/hypertube-ruby-sdk/sdk/invocation_context.rb', line 110

def invoke_static_method(method_name, *args)
  local_command = Command.new(@runtime_name, CommandType::INVOKE_STATIC_METHOD, [method_name, *args])
  if @is_stateless
    local_inv_ctx = build_invocation_context(local_command)
    return local_inv_ctx.send(:pass_by_value)
  end
  build_invocation_context(local_command)
end

#iterator ⇒ Object

def finalize(command, is_executed, interpreter, connection_type, tcp_ip_address)

  proc do
    if command.command_type == CommandType::REFERENCE && is_executed == true
      destruct_command = Command.new(@runtime_name, CommandType::DESTRUCT_REFERENCE, command.payload)
      interpreter.execute(destruct_command, connection_type, tcp_ip_address)
    end
  end
end



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# File 'lib/hypertube-ruby-sdk/sdk/invocation_context.rb', line 39

def iterator
  if ![CommandType::REFERENCE, CommandType::ARRAY_GET_ITEM,
       CommandType::ARRAY_SET_ITEM].include? @current_command.command_type
    raise TypeError, "Object is not iterable for command type #{@current_command.command_type}"
  else
    InvocationContextIterator.new(self)
  end
end

#process_update_invocation_context_commands(response_command) ⇒ Command

Processes ValueForUpdate commands in the response payload. Scans response payload for ValueForUpdate commands, updates corresponding InvocationContexts.

Parameters:

  • response_command (Command) —

    The response command to process.

Returns:

  • (Command) —

    The updated response command.



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# File 'lib/hypertube-ruby-sdk/sdk/invocation_context.rb', line 99

def process_update_invocation_context_commands(response_command)
  # Ruby version: simply return the response_command unchanged
  # Update processing logic can be added here if needed
  response_command
end

#register_for_update ⇒ InvocationContext

Registers the current context for updates by wrapping it in a REGISTER_FOR_UPDATE command.

Returns:



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# File 'lib/hypertube-ruby-sdk/sdk/invocation_context.rb', line 377

def register_for_update
  local_command = Command.new(@runtime_name, CommandType::REGISTER_FOR_UPDATE, [])
  InvocationContext.new(@runtime_name, @connection_type, @tcp_ip_address, build_command(local_command), @is_executed,
                        @is_stateless)
end

#retrieve_array ⇒ Object, Array

Retrieves an array from the target runtime. Retrieves an array from the target runtime.

Returns:

  • (Object) —

    A new InvocationContext instance that wraps the command to retrieve the array.

  • (Array) —

    The retrieved array.

See Also:

  • to this {https://www.hypertube.dev/guides/v2/ruby/arrays-and-collections/one-dimensional-arrays article on Hypertube Guides}
  • to this {https://www.hypertube.dev/guides/v2/ruby/arrays-and-collections/one-dimensional-arrays article on Hypertube Guides}


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# File 'lib/hypertube-ruby-sdk/sdk/invocation_context.rb', line 330

def retrieve_array
  array_inv_ctx = self
  unless @is_stateless
    retrieve_array_command = Command.new(@runtime_name, CommandType::RETRIEVE_ARRAY, [])
    local_inv_ctx = InvocationContext.new(
      @runtime_name,
      @connection_type,
      @tcp_ip_address,
      build_command(retrieve_array_command)
    )
    array_inv_ctx = local_inv_ctx.execute
  end

  payload = array_inv_ctx.current_command.payload
  return [] if payload.empty?

  if payload[0].is_a?(Command)
    invocation_contexts = Array.new(payload.length)
    payload.each_with_index do |item, i|
      invocation_contexts[i] = InvocationContext.new(
        @runtime_name,
        @connection_type,
        @tcp_ip_address,
        item,
        @is_executed,
        @is_stateless
      )
    end
    return invocation_contexts
  end

  payload
end

#set_index(indexes, value) ⇒ InvocationContext

Sets the value at a specific index in an array in the target runtime.

Parameters:

  • indexes (Array) —

    The indexes where new value should be set

  • value (Object) —

    The new value to set at the indexes.

Returns:

  • (InvocationContext) —

    A new InvocationContext instance that wraps the command to set the index.

See Also:



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# File 'lib/hypertube-ruby-sdk/sdk/invocation_context.rb', line 231

def set_index(indexes, value)
  local_command = Command.new(@runtime_name, CommandType::ARRAY_SET_ITEM, [indexes, value])
  build_invocation_context(local_command)
end

#set_instance_field(field_name, value) ⇒ InvocationContext

Sets the value of an instance field in the target runtime.

Parameters:

  • field_name (String) —

    The name of the instance field to set.

  • value (Object) —

    The new value of the instance field.

Returns:

  • (InvocationContext) —

    A new InvocationContext instance that wraps the command to set the instance field.

See Also:

  • to this {https://www.hypertube.dev/guides/v2/ruby/fields-and-properties/getting-and-setting-values-for-instance-fields-and-properties article on Hypertube Guides}


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# File 'lib/hypertube-ruby-sdk/sdk/invocation_context.rb', line 207

def set_instance_field(field_name, value)
  local_command = Command.new(@runtime_name, CommandType::SET_INSTANCE_FIELD, [field_name, value])
  new_command = build_command(local_command)
  if @is_stateless
    @current_command = new_command
    return self
  end
  InvocationContext.new(@runtime_name, @connection_type, @tcp_ip_address, new_command, @is_executed, @is_stateless)
end

#set_static_field(field_name, value) ⇒ InvocationContext

Sets the value of a static field in the target runtime.

Parameters:

  • field_name (String) —

    The name of the static field to set.

  • value (Object) —

    The new value of the static field.

Returns:

  • (InvocationContext) —

    A new InvocationContext instance that wraps the command to set the static field.

See Also:

  • to this {https://www.hypertube.dev/guides/v2/ruby/fields-and-properties/getting-and-setting-values-for-static-fields-and-properties article on Hypertube Guides}


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# File 'lib/hypertube-ruby-sdk/sdk/invocation_context.rb', line 167

def set_static_field(field_name, value)
  local_command = Command.new(@runtime_name, CommandType::SET_STATIC_FIELD, [field_name, value])
  build_invocation_context(local_command)
end