Pipeline Analyzer

Pipeline analyzer includes a portable DSL parser based on pyparsing and a figure drawer based on matplotlib.

Pipeline Grammar

Keywords

Keyword	Description	Keyword	Description
task	Declare a task class	event	define a event
duration	specify the time of duration of a task	at	specify the time when a event happens
group	specify the goup of a task	finish	denote the finish time of a task
after	define a dependency relationship	start	denote the start time of a task
range	specify the subscript range of task objects	period	define a period
null	a placeholder referring to no task object	to	specify the beginning and end of a period
label	specify a description	include	prepocessor to include another ppl file

Task Class Declaration

task <TaskClassName> {
    duration: <FloatNumber>; group: "<String>";
};

<TaskClassName> consists of letters and "_".

Task Object Definition

<TaskClassName> <TaskObjectName> range <Integer>-<Integer>;

<TaskClassName> <TaskObjectName> range <Integer>-<Integer> label "<String>";

<TaskObjectName> consists of letters and "_". The label is an empty <String> by default.

Dependency Definition

<TaskRefName> after <TaskRefName>;
<TaskRefName> after <TaskRefName> <TaskRefName>;
...

TaskRefName consists of a <TaskObjectName> followed by an <Integer> within the defined subscript range, e.g., task1.

Event Definition

event <EventName> at <TaskObjectName> start;
event <EventName> at <TaskObjectName> finish label "<String>";

<EventName> consists of letters, numbers and "_".

Period Definition

period <EventName> to <EventName>;
period <EventName> to <EventName> label "<String>";

Comment

// Some comments

Other Rules

Pipeline is sensitive to capitalization and insensitive to line break between words. ; is expected in the end to close each expression.

Install the Highlighter Extension for VSCode

In the following tutorial, we use Command("command") to represent searching and running the command <command> in VSCode Command Palette. Usually, you can open the palette by shotcut keys Shift + Command + P in MacOS and Ctrl + Shift + P in Windows/Linux.

1. Clone or download this repository.
2. Command("Extensions: Open Extensions Folder") -> Copy the directry pipeline.vscode to the extensions folder -> Command("Developer: Reload Window")
3. Command("Preferences: Open User Settings (JSON)") -> Copy JSON settings in pipeline.vscode/settings.json (starting from Line 2) and insert them into the VSCode's user settings.

Highlight Example

Example of Usage

We provide an example of usage in example.py with dependency definitions in example.ppl/example_h.ppl and output figure example.png.

from pipeline.pipeline_parser import PipelineParser
from pipeline.pipeline_drawer import DiagramDrawer


parser = PipelineParser()
parsed = parser.parse_file("example.ppl")

tasks = parsed.arange_tasks()
events = parsed.compute_events()
period = parsed.compute_period()
groups = { 'here': 1, 'there': 0 }
colors = {
    'ThereD': '#E2F0D9', 'HereD': '#FFF2CC',
    'ThereT': '#DAE3F3', 'HereT': '#DAE3F3',
    'here': '#FFF8E5', 'there': '#F0F7EB' }

figure = DiagramDrawer(
        max_ylim=11, ylabel="sequence"
    ).draw(tasks, events, period, groups, colors)
figure.savefig('example.png')