- four pages walking the vet sample: overview, domain & API, pipelines & worker, spec-driven client admin - mkdocs nav section, index + start-an-app cross links - bundle now exposes the walkthrough as wiki_reference_app_* modules
1056 lines
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1056 lines
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Aetos Standards — Wiki
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Overview
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</a>
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<a href="../02_components/" class="md-tabs__link">
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App Components
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</a>
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<a href="../03_start_an_app/" class="md-tabs__link">
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Start an App
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</a>
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</li>
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Reference App
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</a>
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<a href="../05_mcp_setup/" class="md-tabs__link">
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MCP
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</a>
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Testing & Quality
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</a>
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<a href="../04_development/02_releasing/" class="md-tabs__link">
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Releasing & Versioning
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Aetos Standards — Wiki
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Home
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<span class="md-ellipsis">
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Overview
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</label>
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<span class="md-ellipsis">
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Overview
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</span>
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</a>
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<nav class="md-nav md-nav--secondary" aria-label="Table of contents">
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Table of contents
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<ul class="md-nav__list" data-md-component="toc" data-md-scrollfix>
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<li class="md-nav__item">
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<a href="#architecture" class="md-nav__link">
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<span class="md-ellipsis">
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🏗️ Architecture
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</span>
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</a>
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</li>
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<li class="md-nav__item">
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<a href="#the-one-way-dependency-rule" class="md-nav__link">
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<span class="md-ellipsis">
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🔄 The one-way dependency rule
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</a>
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<li class="md-nav__item">
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🧭 Core principles
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</a>
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</li>
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<li class="md-nav__item">
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<a href="#runtime-processes" class="md-nav__link">
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<span class="md-ellipsis">
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⚙️ Runtime processes
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</span>
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</a>
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</li>
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<li class="md-nav__item">
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<a href="#read-next" class="md-nav__link">
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➡️ Read Next
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<a href="../02_components/" class="md-nav__link">
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<span class="md-ellipsis">
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App Components
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</a>
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<a href="../03_start_an_app/" class="md-nav__link">
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<span class="md-ellipsis">
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Start an App
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</span>
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</a>
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<span class="md-ellipsis">
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Reference App
|
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</span>
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Overview
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Domain & API
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MCP
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MCP
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Setup
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Testing & Quality
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Releasing & Versioning
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<div class="md-content" data-md-component="content">
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<article class="md-content__inner md-typeset">
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|
||
|
||
|
||
|
||
|
||
<h1 id="overview">Overview</h1>
|
||
<p>The blueprint is a <strong>hexagonal (ports & adapters) application</strong> with a
|
||
<strong>spec-first</strong> web edge and a <strong>single composition root</strong>. It favors explicit
|
||
wiring over implicit magic and existing internal libraries over hand-written
|
||
infrastructure. Start here to build the mental model; the enforceable details
|
||
live in the reference pages.</p>
|
||
<hr />
|
||
<h2 id="architecture">🏗️ Architecture</h2>
|
||
<pre class="mermaid"><code>flowchart LR
|
||
subgraph EDGE["interfaces/ — HTTP edge"]
|
||
OAS["openapi.yaml<br/>operationId contract"]
|
||
RT["<resource>/routes.py<br/>thin handlers"]
|
||
end
|
||
|
||
subgraph CORE["domain/ — business core"]
|
||
MD["models"]
|
||
PT["ports (adapter binding seam)"]
|
||
SV["services"]
|
||
end
|
||
|
||
subgraph INFRA["infra/ — adapters"]
|
||
RP["mongo repos (mongo-ops)"]
|
||
AD["cache · stores · llm · mail"]
|
||
DB[("MongoDB")]
|
||
end
|
||
|
||
CR["init.py<br/>composition root"]
|
||
|
||
OAS --> RT
|
||
RT --> SV
|
||
SV --> PT
|
||
SV --> RP
|
||
PT -. depends on .- RP
|
||
CR --- RT
|
||
CR --- SV
|
||
CR --- RP
|
||
RP --> DB
|
||
AD --- CR</code></pre>
|
||
<p>The rule holds at every edge: code in an outer ring may depend on a ring closer
|
||
to the core, never the reverse. <code>domain/</code> never imports a web framework;
|
||
only its <code>ports/</code> seam reaches into <code>infra/</code> to bind adapters.</p>
|
||
<blockquote>
|
||
<p><strong>Legend</strong> — solid arrows are compile-time calls; dotted arrows are the
|
||
port/adapter binding, performed by the composition root at startup.</p>
|
||
</blockquote>
|
||
<hr />
|
||
<h2 id="the-one-way-dependency-rule">🔄 The one-way dependency rule</h2>
|
||
<table>
|
||
<thead>
|
||
<tr>
|
||
<th>Ring</th>
|
||
<th>May import</th>
|
||
<th>Never imports</th>
|
||
</tr>
|
||
</thead>
|
||
<tbody>
|
||
<tr>
|
||
<td><code>interfaces/</code></td>
|
||
<td><code>domain</code>, framework glue (glue only)</td>
|
||
<td>business logic, <code>infra</code> directly</td>
|
||
</tr>
|
||
<tr>
|
||
<td><code>domain/</code></td>
|
||
<td>its own models + its <code>ports/</code> seam (which binds <code>infra</code>/libraries)</td>
|
||
<td>web frameworks, <code>interfaces/</code></td>
|
||
</tr>
|
||
<tr>
|
||
<td><code>infra/</code></td>
|
||
<td><code>domain</code> ports, drivers, libraries</td>
|
||
<td>—</td>
|
||
</tr>
|
||
<tr>
|
||
<td><code>init.py</code></td>
|
||
<td>everything (the wiring point)</td>
|
||
<td>—</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<hr />
|
||
<h2 id="core-principles">🧭 Core principles</h2>
|
||
<ol>
|
||
<li><strong>One-way dependencies.</strong> <code>interfaces -> domain -> infra</code> is allowed; the
|
||
reverse is forbidden.</li>
|
||
<li><strong>Ports in the domain, adapters in infra.</strong> A service depends on a port; the
|
||
port's factory binds the concrete adapter, and the composition root calls
|
||
those factories.</li>
|
||
<li><strong>One composition root.</strong> Nothing constructs its own dependencies. All
|
||
wiring lives in one module (<code>init.py</code>) exposed as a flat resource registry.</li>
|
||
<li><strong>Spec-first.</strong> The HTTP contract is declared in <code>openapi.yaml</code>; route
|
||
handlers are looked up by <code>operationId</code>. There are no decorator routers.</li>
|
||
<li><strong>Reuse the libraries.</strong> Orchestration, DI, Mongo repositories, ingestion,
|
||
auth, and docs come from internal libraries — see the <a href="../../lib/93_library_registry/">Library
|
||
Registry</a>.</li>
|
||
<li><strong>Explicit state machines.</strong> Long-running work moves through explicit,
|
||
durable statuses and can pause for human input.</li>
|
||
</ol>
|
||
<hr />
|
||
<h2 id="runtime-processes">⚙️ Runtime processes</h2>
|
||
<p>A standard app may run as up to three processes that share the same composition
|
||
root:</p>
|
||
<table>
|
||
<thead>
|
||
<tr>
|
||
<th>Process</th>
|
||
<th>Entry point</th>
|
||
<th>Responsibility</th>
|
||
</tr>
|
||
</thead>
|
||
<tbody>
|
||
<tr>
|
||
<td>API</td>
|
||
<td><code>main.py</code></td>
|
||
<td>serve HTTP; start/stop resources via lifespan</td>
|
||
</tr>
|
||
<tr>
|
||
<td>Worker</td>
|
||
<td><code>worker.py</code></td>
|
||
<td>poll durable jobs, run pipelines, publish progress</td>
|
||
</tr>
|
||
<tr>
|
||
<td>Scripts</td>
|
||
<td><code>python -m scripts.<name></code></td>
|
||
<td>one-shot operator tasks</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<hr />
|
||
<h2 id="read-next">➡️ Read Next</h2>
|
||
<ul>
|
||
<li><a href="../02_components/">02 – App Components</a> · <a href="../03_start_an_app/">03 – Start an App</a></li>
|
||
</ul>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
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</article>
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