morpheus.stages.input.appshield_source_stage.AppShieldSourceStage

Bases: morpheus.pipeline.preallocator_mixin.PreallocatorMixin, morpheus.pipeline.single_output_source.SingleOutputSource

Source stage is used to load Appshield messages from one or more plugins into a dataframe. It normalizes nested json messages and arranges them into a dataframe by snapshot and source.

Parameters

c : morpheus.config.Config

Pipeline configuration instance.

input_glob

Input glob pattern to match files to read. For example, /input_dir/<source>/snapshot-*/*.json would read all files with the ‘json’ extension in the directory input_dir.

plugins_include

Plugins for appshield to be extracted.

cols_include

Raw features to extract from appshield plugins data.

cols_exclude

Columns that aren’t essential should be excluded. If None, [“SHA256”] will be used.

watch_directory

The watch directory option instructs this stage to not close down once all files have been read. Instead it will read all files that match the ‘input_glob’ pattern, and then continue to watch the directory for additional files. Any new files that are added that match the glob will then be processed.

max_files

Max number of files to read. Useful for debugging to limit startup time. Default value of -1 is unlimited.

sort_glob

If true the list of files matching input_glob will be processed in sorted order.

recursive

If true, events will be emitted for the files in subdirectories matching input_glob.

queue_max_size

Maximum queue size to hold the file paths to be processed that match input_glob.

batch_timeout

Timeout to retrieve batch messages from the queue.

encoding

Encoding to read a file.

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_count

Return None for no max intput count

input_ports

Input ports to this stage.

is_built

Indicates if this stage has been built.

is_pre_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

_build(builder, input_nodes)[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 list of parent nodes.

Parameters

builder : mrc.Builder

mrc.Builder object for the pipeline. This should be used to construct/attach the internal mrc.SegmentObject.

input_nodes : list[mrc.SegmentObject]

List containing the input mrc.SegmentObject objects.

Returns

list[mrc.SegmentObject]

List of tuples containing the output mrc.SegmentObject object from this stage.

_build_source(builder)[source]

Abstract method all derived Source classes should implement. Returns the same value as build.

Returns

mrc.SegmentObject:

The MRC node for this stage.

_build_sources(builder)[source]

Abstract method all derived Source classes should implement. Returns the same value as build.

Returns

mrc.SegmentObject:

The MRC nodes for this stage.

static batch_source_split(x, source)[source]

Combines plugin dataframes from multiple snapshot and split dataframe per source.

Parameters

x

Dataframes from multiple sources.

source

source column name to group it.

Returns

typing.Dict[str, pandas.DataFrame]

Grouped dataframes by source.

build(builder, do_propagate=True)[source]

Build this stage.

Parameters

builder : mrc.Builder

MRC segment for this stage.

do_propagate

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_ports

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

Returns

bool

True if we can build, False otherwise.

can_pre_build(check_ports=False)[source]

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

Parameters

check_ports

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

Returns

bool

True if we can build, False otherwise.

compute_schema(schema)[source]

Compute the schema for this stage based on the incoming schema from upstream stages.

Incoming schema and type information from upstream stages is available via the schema.input_schemas and schema.input_types properties.

Derived classes need to override this method, can set the output type(s) on schema by calling set_type for all output ports. For example a simple pass-thru stage might perform the following:

If the port types in upstream_schema are incompatible the stage should raise a RuntimeError.

static files_to_dfs(x, cols_include, cols_exclude, plugins_include, encoding)[source]

Load plugin files into a dataframe, then segment the dataframe by source.

Parameters

x

List of file paths.

cols_include

Columns that needs to include.

cols_exclude

Columns that needs to exclude.

plugins_include: typing.List[str]

For each path in x, a list of plugins to load additional meta cols from.

encoding

Encoding to read a file.

Returns

typing.Dict[str, pandas.DataFrame]

Grouped dataframes by source.

static fill_interested_cols(plugin_df, cols_include)[source]

Fill missing interested plugin columns.

Parameters

plugin_df

Snapshot plugin dataframe

cols_include

Columns that needs to be included.

Returns

pandas.DataFrame

The columns added dataframe.

get_all_input_stages()[source]

Get all input stages to this stage.

Returns

list[morpheus.pipeline.pipeline.StageBase]

All input stages.

get_all_inputs()[source]

Get all input senders to this stage.

Returns

list[morpheus.pipeline.pipeline.Sender]

All input senders.

get_all_output_stages()[source]

Get all output stages from this stage.

Returns

list[morpheus.pipeline.pipeline.StageBase]

All output stages.

get_all_outputs()[source]

Get all output receivers from this stage.

Returns

list[morpheus.pipeline.pipeline.Receiver]

All output receivers.

get_needed_columns()[source]

Stages which need to have columns inserted into the dataframe, should populate the self._needed_columns dictionary with mapping of column names to morpheus.common.TypeId. This will ensure that the columns are allocated and populated with null values.

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_count: int

Return None for no max intput count

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

Input ports to this stage.

Returns

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.

property is_pre_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 on its own.

static load_df(filepath, cols_exclude, encoding)[source]

Reads a file into a dataframe.

Parameters

filepath

Path to a file.

cols_exclude

Columns that needs to exclude.

encoding

Encoding to read a file.

Returns

pandas.DataFrame

The parsed dataframe.

Raises

JSONDecodeError

If not able to decode the json file.

static load_meta_cols(filepath_split, plugin, plugin_df)[source]

Loads meta columns to dataframe.

Parameters

filepath_split

Splits of file path.

plugin

Plugin name to which the data belongs to.

plugin_df: pd.DataFrame

DataFrame to which the meta columns will be added to.

Returns

pandas.DataFrame

The parsed dataframe.

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.

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

Output ports from this stage.

Returns

list[morpheus.pipeline.pipeline.Sender]

Output ports from this stage.

static read_file_to_df(file, cols_exclude)[source]

Read file content to dataframe.

Parameters

file : io.TextIOWrapper

Input file object

cols_exclude

Dropping columns from a dataframe.

Returns

pandas.DataFrame

The columns added dataframe

set_needed_columns(needed_columns)[source]

Sets the columns needed to perform preallocation. This should only be called by the Pipeline at build time. The needed_columns shoudl contain the entire set of columns needed by any other stage in this segment.

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]

Stages can implement this to perform cleanup steps when pipeline is stopped.

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.