morpheus.stages.general.monitor_stage.MonitorStage

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class MonitorStage(c, description='Progress', smoothing=0.05, unit='messages', delayed_start=False, determine_count_fn=None)[source]

Bases: morpheus.pipeline.single_port_stage.SinglePortStage

Display throughput numbers at a specific point in the pipeline.

Monitor stage used to monitor stage performance metrics using Tqdm. Each Monitor Stage will represent one line in the console window showing throughput statistics. Can be set up to show an instantaneous throughput or average input.

Parameters

c<bsp-code-inline code="<a href="morpheus.config.Config.html#morpheus.config.Config">morpheus.config.Config</a>"><a href="morpheus.config.Config.html#morpheus.config.Config">morpheus.config.Config</a></bsp-code-inline>: Pipeline configuration instance.
descriptionstr, default = “Progress”: Name to show for this Monitor Stage in the console window.
smoothingfloat: Smoothing parameter to determine how much the throughput should be averaged. 0 = Instantaneous, 1 = Average.
unitstr: Units to show in the rate value.
delayed_startbool: When delayed_start is enabled, the progress bar will not be shown until the first message is received. Otherwise, the progress bar is shown on pipeline startup and will begin timing immediately. In large pipelines, this option may be desired to give a more accurate timing.
determine_count_fntyping.Callable[[typing.Any], int]: Custom function for determining the count in a message. Gets called for each message. Allows for correct counting of batched and sliced messages.

Attributes

has_multi_input_ports: Indicates if this stage has multiple input ports.
has_multi_output_ports: Indicates if this stage has multiple output ports.
input_ports: Input ports to this stage.
is_built: Indicates if this stage has been built.
name: The name of the stage.
output_ports: Output ports from this stage.
unique_name: Unique name of stage.

Methods

`accepted_types`()	Accepted input types for this stage are returned.
`build`(builder[, do_propagate])	Build this stage.
`can_build`([check_ports])	Determines if all inputs have been built allowing this node to be built.
`get_all_input_stages`()	Get all input stages to this stage.
`get_all_inputs`()	Get all input senders to this stage.
`get_all_output_stages`()	Get all output stages from this stage.
`get_all_outputs`()	Get all output receivers from this stage.
`join`()	Awaitable method that stages can implement this to perform cleanup steps when pipeline is stopped.
`on_start`()	Starts the pipeline stage's progress bar.
`start_async`()	This function is called along with on_start during stage initialization.
`stop`()	Clean up and close the progress bar.
`supports_cpp_node`()	Specifies whether this Stage is capable of creating C++ nodes.

_build(builder, in_ports_streams)[source]

This function is responsible for constructing this stage’s internal mrc.SegmentObject object. The input of this function contains the returned value from the upstream stage.

The input values are the mrc.Builder for this stage and a StreamPair tuple which contain the input mrc.SegmentObject object and the message data type.

Parameters

builder<bsp-code-inline code="mrc.Builder">mrc.Builder</bsp-code-inline>: mrc.Builder object for the pipeline. This should be used to construct/attach the internal mrc.SegmentObject.
in_ports_streams<bsp-code-inline code="morpheus.pipeline.pipeline.StreamPair">morpheus.pipeline.pipeline.StreamPair</bsp-code-inline>: List of tuples containing the input mrc.SegmentObject object and the message data type.

Returns

typing.List[morpheus.pipeline.pipeline.StreamPair]: List of tuples containing the output mrc.SegmentObject object from this stage and the message data type.

accepted_types()[source]

Accepted input types for this stage are returned.

Returns

typing.Tuple: Accepted input types.

build(builder, do_propagate=True)[source]

Build this stage.

Parameters

builder<bsp-code-inline code="mrc.Builder">mrc.Builder</bsp-code-inline>: MRC segment for this stage.
do_propagatebool, optional: Whether to propagate to build output stages, by default True.

can_build(check_ports=False)[source]

Determines if all inputs have been built allowing this node to be built.

Parameters

check_portsbool, optional: Check if we can build based on the input ports, by default False.

Returns

bool: True if we can build, False otherwise.

get_all_input_stages()[source]

Get all input stages to this stage.

Returns

typing.List[morpheus.pipeline.pipeline.StreamWrapper]: All input stages.

get_all_inputs()[source]

Get all input senders to this stage.

Returns

typing.List[morpheus.pipeline.pipeline.Sender]: All input senders.

get_all_output_stages()[source]

Get all output stages from this stage.

Returns

typing.List[morpheus.pipeline.pipeline.StreamWrapper]: All output stages.

get_all_outputs()[source]

Get all output receivers from this stage.

Returns

typing.List[morpheus.pipeline.pipeline.Receiver]: All output receivers.

property has_multi_input_ports: bool

Indicates if this stage has multiple input ports.

Returns

bool: True if stage has multiple input ports, False otherwise.

property has_multi_output_ports: bool

Indicates if this stage has multiple output ports.

Returns

bool: True if stage has multiple output ports, False otherwise.

property input_ports: List[morpheus.pipeline.receiver.Receiver]

Input ports to this stage.

Returns

typing.List[morpheus.pipeline.pipeline.Receiver]: Input ports to this stage.

property is_built: bool

Indicates if this stage has been built.

Returns

bool: True if stage is built, False otherwise.

async join()[source]: Awaitable method that stages can implement this to perform cleanup steps when pipeline is stopped. Typically this is called after stop during a graceful shutdown, but may not be called if the pipeline is terminated.

property name: str

The name of the stage. Used in logging. Each derived class should override this property with a unique name.

Returns

str: Name of a stage.

on_start()[source]: Starts the pipeline stage’s progress bar.

property output_ports: List[morpheus.pipeline.sender.Sender]

Output ports from this stage.

Returns

typing.List[morpheus.pipeline.pipeline.Sender]: Output ports from this stage.

async start_async()[source]: This function is called along with on_start during stage initialization. Allows stages to utilize the asyncio loop if needed.

stop()[source]: Clean up and close the progress bar.

supports_cpp_node()[source]: Specifies whether this Stage is capable of creating C++ nodes. During the build phase, this value will be combined with CppConfig.get_should_use_cpp() to determine whether or not a C++ node is created. This is an instance method to allow runtime decisions and derived classes to override base implementations.

property unique_name: str

Unique name of stage. Generated by appending stage id to stage name.

Returns

str: Unique name of stage.