Add documentation to LinearBoundary stages (#418)

Resolves #413

Authors:
  - Devin Robison (https://github.com/drobison00)
  - Michael Demoret (https://github.com/mdemoret-nv)

Approvers:
  - Michael Demoret (https://github.com/mdemoret-nv)

URL: #418

morpheus/pipeline/linear_pipeline.py

@@ -103,6 +103,34 @@ def add_stage(self, stage: _pipeline.SinglePortStage):
         self._linear_stages.append(stage)
 
     def add_segment_boundary(self, data_type=None, as_shared_pointer=False):
+        """
+        Parameters
+        ----------
+        data_type : `data_type`
+            data type that will be passed across the segment boundary, defaults to a general python object
+            if 'data_type' has no registered edge adapters.
+
+        as_shared_pointer : `boolean`
+            Whether the data type will be wrapped in a shared pointer.
+
+        Example
+        -------
+            # Create a config and pipeline
+            config = Config()
+            pipe = LinearPipeline(config)
+
+            # Add a source in Segment #1
+            pipe.set_source(FileSourceStage(config, filename=val_file_name, iterative=False))
+
+            # Add a segment boundary
+            # [Current Segment] - [Egress Boundary] ---- [Ingress Boundary] - [Next Segment]
+            pipe.add_segment_boundary(MessageMeta)
+
+            # Add a sink in Segment #2
+            pipe.add_stage(WriteToFileStage(config, filename=out_file, overwrite=False))
+
+            pipe.run()
+        """
         if (len(self._linear_stages) == 0):
             raise RuntimeError("Cannot create a segment boundary, current segment is empty.")
 

morpheus/stages/boundary/linear_boundary_stage.py

@@ -27,11 +27,23 @@
 
 class LinearBoundaryEgressStage(SinglePortStage):
     """
+    TheLinearBoundaryEgressStage acts as an egress point from one linear segment to another. Given an existing linear
+    pipeline that we want to connect to another segment, a linear boundary egress stage would be added, in conjunction
+    with a matching LinearBoundaryIngressStage on the target linear segment.
+
     Parameters
     ----------
     c : `morpheus.config.Config`
         Pipeline configuration instance.
-
+    boundary_port_id : `str`
+        String indicating the name of the egress port associated with the LinearBoundaryEgressStage; allowing it to be
+        paired with the corresponding ingress port.
+    data_type : `typing.Type`
+        Data type that this Stage will accept and then output to its egress port.
+
+    Example
+    -------
+        boundary_egress = LinearBoundaryEgressStage(config, "my_boundary_port", int)
     """
 
     def __init__(self, c: Config, boundary_port_id: str, data_type):
@@ -68,11 +80,23 @@ def _build_single(self, builder: srf.Builder, input_stream: StreamPair) -> Strea
 
 class LinearBoundaryIngressStage(SingleOutputSource):
     """
+    TheLinearBoundaryIngressStage acts as source ingress point from a corresponding egress in another linear segment.
+    Given an existing linear pipeline that we want to connect to another segment, a linear boundary egress stage would
+    be added to it and a matching LinearBoundaryIngressStage would be created to receive the e.
+
     Parameters
     ----------
     c : `morpheus.config.Config`
         Pipeline configuration instance.
-
+    boundary_port_id : `str`
+        String corresponding to the name of the LinearBoundaryEgressStage's egress port, use to identify and connect
+        with the appropriate egress.
+    data_type : `object`
+        Data type that this Stage will accept, which will correspond to some existing egress output.
+
+    Example
+    -------
+        boundary_ingress = LinearBoundaryIngressStage(config, "my_boundary_port", int)
     """
 
     def __init__(self, c: Config, boundary_port_id: str, data_type=None):