haijohn’s gists

haijohn / gist:4783d756bd4e5c255de86ede096d440b

Created December 8, 2025 05:15

1. Introduction: The Paradigm Shift from Deterministic Integration to Probabilistic Agency

The fundamental architecture of software integration is undergoing a seismic shift, moving away from the rigid, deterministic pathways that have defined the last two decades of computing and toward a new era of probabilistic, agentic workflows. For the past twenty years, the interaction between disparate software systems has been governed by the strict contract of the Application Programming Interface (API). In this traditional paradigm, the "glue" code connecting a user interface to a backend service was static and brittle; a developer was required to hard-code the specific endpoint, define the exact JSON payload structure, and pre-program distinct error handling routines for every conceivable failure state. If the API schema changed, or if a user’s request deviated even slightly from the pre-programmed path, the integration would fail. This model, while reliable for repetitive and predictable tasks, is inherently frag

haijohn / gist:39d86067d640dd9cdb2a17bcd83ca9dd

Created December 7, 2025 13:28

	Architecture Design: Autonomous API Agent Platform
	1. System Overview
	The system is a "ReAct" (Reasoning + Acting) Agent platform. It ingests OpenAPI specifications (Swagger) from an Admin, converts them into "Tools," and allows an LLM to orchestrate HTTP requests to fulfill natural language user intents.

	high-Level Context Diagram (Mermaid)
	Code snippet

	graph TD
	User((User)) -->\|Natural Language\| FE[Frontend UI]
	Admin((Admin)) -->\|OpenAPI Specs / Prompts\| FE

haijohn / gist:32bc8df7f7b2f68d84a7c863e543baa4

Created June 12, 2025 08:45

workflow design

	Software Architecture Document: Metadata-Driven Workflow Engine
	Version: 1.0

	Date: June 12, 2025

	Author: Gemini Architect

	1. Motivation
	The current system for executing data and machine learning pipelines involves multiple distinct workflows, each with its own dedicated codebase, repository, and CI/CD pipeline. While this approach allows for isolation, it has led to significant inefficiencies and operational challenges:

haijohn / gist:52ee1e5cb5e1b7c09bdf2b44d30ee9c7

Created May 13, 2025 15:03

mybatis filter model

	<?xml version="1.0" encoding="UTF-8" ?>
	<!DOCTYPE mapper
	PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
	"https://mybatis.org/dtd/mybatis-3-mapper.dtd">
	<mapper namespace="com.example.mapper.OlympicWinnerMapper">

	<sql id="selectColumns">
	*
	</sql>

haijohn / test.py

Created May 8, 2025 15:22

demo the master/slave code

	# combined_pipeline.py

	import multiprocessing
	import time
	import os
	import pickle
	import pandas as pd
	import sys
	import functools # Import functools for decorators

haijohn / ndarray_mul.py

Last active June 15, 2019 15:23

	def __mul__(self, other):
	if isinstance(other, (N.ndarray, list, tuple)) :
	# This promotes 1-D vectors to row vectors
	return N.dot(self, asmatrix(other))
	if isscalar(other) or not hasattr(other, '__rmul__') :
	return N.dot(self, other)
	return NotImplemented