petya
75601988c2
- Cover, TOC, 5 dividers, 3 recap slides - 5 sections (chains, langgraph, deepagents, openswe, ecosystem) - design-system.js with theme tokens + 9 helper functions - research/: timeline + sources + per-tech notes - final-compile.js + merge.js for rebuild pipeline - output/: langchain-evolution.pptx (2.3 MB) + langchain-evolution.pdf (1.1 MB) + 7 sample previews
60 lines
2.0 KiB
JavaScript
60 lines
2.0 KiB
JavaScript
// Slide 23: Middleware -- HumanInTheLoop + PIIRedaction + Summarization
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// Code slide: cross-cutting hooks attached at agent construction.
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const ds = require('./design-system');
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function createSlide(pres, theme) {
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const slide = pres.addSlide();
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ds.helpers.slideBase(slide, pres, theme);
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ds.helpers.addHeader(slide, pres, theme, {
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eyebrow: 'STAGE 1: CHAINS',
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section: 'Middleware',
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title: 'Cross-cutting concerns одной строкой',
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sectionNumber: 1,
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});
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ds.helpers.addCodeBlock(slide, pres, theme, {
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x: 0.5, y: 1.5, w: 9.0, h: 3.25,
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language: 'python',
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filePath: 'examples/middleware.py',
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code: [
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'from langchain.agents import create_agent',
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'from langchain.agents.middleware import (',
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' HumanInTheLoopMiddleware,',
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' PIIRedactionMiddleware,',
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' SummarizationMiddleware,',
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')',
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'from langchain.tools import tool',
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'',
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'@tool',
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'def send_email(to: str, body: str) -> str:',
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' """Send an email to recipient."""',
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' return f"sent to {to}"',
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'',
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'agent = create_agent(',
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' model="openai:gpt-4.1",',
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' tools=[send_email],',
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' middleware=[',
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' HumanInTheLoopMiddleware(interrupt_on={"send_email": True}),',
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' PIIRedactionMiddleware(redact_emails=True, redact_phones=True),',
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' SummarizationMiddleware(trigger=("tokens", 4000)),',
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' ],',
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')',
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].join('\n'),
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});
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// Right-side mini-glossary callouts (left side has code; reuse addCallout below)
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ds.helpers.addCallout(slide, pres, theme, {
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x: 0.5, y: 4.85, w: 9.0, h: 0.3,
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kind: 'warning',
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text: 'Все три middleware -- встроенные. Custom middleware пишутся как before_model/after_model hooks.',
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});
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ds.helpers.addSourceLine(slide, pres, theme, {
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source: 'docs.langchain.com/oss/python/langchain/middleware',
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});
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ds.helpers.addPageNumber(slide, pres, theme, 23);
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}
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module.exports = { createSlide }; |