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Vishesh 'ironeagle' Bangotra 0e49f02c4c
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<h1 id="introspection">Introspection</h1>
<div class="doc doc-object doc-module">
<h2 id="jwtlib.introspection" class="doc doc-heading">
<code class="doc-symbol doc-symbol-heading doc-symbol-module"></code> <span class="doc doc-object-name doc-module-name">jwtlib.introspection</span>
</h2>
<div class="doc doc-contents first">
<p>Auth client and access-control utilities.</p>
<hr />
<h4 id="jwtlib.introspection--summary">Summary</h4>
<p>This module provides <strong>pure authentication and authorization logic</strong>
for validating JWTs via service-to-service introspection and resolving
authenticated users.</p>
<details class="notes" open>
<summary>Notes</summary>
<p><strong>Responsibilities:</strong></p>
<div class="language-text highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span></span><span class="normal">1</span>
<span class="normal">2</span>
<span class="normal">3</span></pre></div></td><td class="code"><div><pre><span></span><code>- Calling the auth service introspection endpoint
- Translating introspection responses into typed user models
- Enforcing access control decisions at the logic layer
</code></pre></div></td></tr></table></div>
<p><strong>Constraints:</strong></p>
<div class="language-text highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span></span><span class="normal">1</span></pre></div></td><td class="code"><div><pre><span></span><code>- This module intentionally does NOT: Parse HTTP requests or headers, implement authentication policies, or perform JWT signature verification locally.
</code></pre></div></td></tr></table></div>
</details>
<div class="doc doc-children">
<h3 id="jwtlib.introspection-classes">Classes</h3>
<h3 id="jwtlib.introspection-functions">Functions</h3>
<div class="doc doc-object doc-function">
<h4 id="jwtlib.introspection.authenticate_request" class="doc doc-heading">
<code class="doc-symbol doc-symbol-heading doc-symbol-function"></code> <span class="doc doc-object-name doc-function-name">authenticate_request</span>
<span class="doc doc-labels">
<small class="doc doc-label doc-label-async"><code>async</code></small>
</span>
</h4>
<div class="language-python doc-signature highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span></span><span class="normal"><a href="#__codelineno-0-1">1</a></span></pre></div></td><td class="code"><div><pre><span></span><code><span id="__span-0-1"><a id="__codelineno-0-1" name="__codelineno-0-1"></a><span class="nf">authenticate_request</span><span class="p">(</span><span class="n">should_skip_authentication</span><span class="p">:</span> <span class="n">Callable</span><span class="p">[[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">str</span><span class="p">],</span> <span class="nb">bool</span><span class="p">],</span> <span class="o">*</span><span class="p">,</span> <span class="n">method</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> <span class="n">path</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> <span class="n">authorization_token</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">])</span> <span class="o">-&gt;</span> <span class="n">Optional</span><span class="p">[</span><span class="n">PublicUser</span><span class="p">]</span>
</span></code></pre></div></td></tr></table></div>
<div class="doc doc-contents ">
<p>Authenticate an incoming request using token introspection.</p>
<p><span class="doc-section-title">Parameters:</span></p>
<table>
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th>Description</th>
<th>Default</th>
</tr>
</thead>
<tbody>
<tr class="doc-section-item">
<td><code>should_skip_authentication</code></td>
<td>
<code><span title="typing.Callable">Callable</span>[[str, str], bool]</code>
</td>
<td>
<div class="doc-md-description">
<p>Callable that decides whether authentication is required for a given HTTP method and path.</p>
</div>
</td>
<td>
<em>required</em>
</td>
</tr>
<tr class="doc-section-item">
<td><code>method</code></td>
<td>
<code>str</code>
</td>
<td>
<div class="doc-md-description">
<p>HTTP method of the incoming request.</p>
</div>
</td>
<td>
<em>required</em>
</td>
</tr>
<tr class="doc-section-item">
<td><code>path</code></td>
<td>
<code>str</code>
</td>
<td>
<div class="doc-md-description">
<p>Request path.</p>
</div>
</td>
<td>
<em>required</em>
</td>
</tr>
<tr class="doc-section-item">
<td><code>authorization_token</code></td>
<td>
<code>str | None</code>
</td>
<td>
<div class="doc-md-description">
<p>JWT access token provided by the caller.</p>
</div>
</td>
<td>
<em>required</em>
</td>
</tr>
</tbody>
</table>
<p><span class="doc-section-title">Returns:</span></p>
<table>
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr class="doc-section-item">
<td>
<code><span title="typing.Optional">Optional</span>[<a class="autorefs autorefs-internal" title="jwtlib.models.PublicUser" href="../models/#jwtlib.models.PublicUser">PublicUser</a>]</code>
</td>
<td>
<div class="doc-md-description">
<p>PublicUser | None:
PublicUser if authentication succeeds; None if authentication is skipped.</p>
</div>
</td>
</tr>
</tbody>
</table>
<p><span class="doc-section-title">Raises:</span></p>
<table>
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr class="doc-section-item">
<td>
<code><a class="autorefs autorefs-internal" title="jwtlib.exceptions.InvalidToken" href="../exceptions/#jwtlib.exceptions.InvalidToken">InvalidToken</a></code>
</td>
<td>
<div class="doc-md-description">
<p>If authentication is required but the token is missing, invalid, or revoked.</p>
</div>
</td>
</tr>
<tr class="doc-section-item">
<td>
<code><a class="autorefs autorefs-internal" title="jwtlib.exceptions.AuthServiceUnavailable" href="../exceptions/#jwtlib.exceptions.AuthServiceUnavailable">AuthServiceUnavailable</a></code>
</td>
<td>
<div class="doc-md-description">
<p>If the auth service cannot be reached.</p>
</div>
</td>
</tr>
</tbody>
</table>
<details class="notes" open>
<summary>Notes</summary>
<p><strong>Responsibilities:</strong></p>
<div class="language-text highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span></span><span class="normal">1</span></pre></div></td><td class="code"><div><pre><span></span><code>- Determines whether authentication should be skipped for the given request context and, if not, resolves the authenticated user via token introspection
</code></pre></div></td></tr></table></div>
<p><strong>Guarantees:</strong></p>
<div class="language-text highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span></span><span class="normal">1</span></pre></div></td><td class="code"><div><pre><span></span><code>- This function does not parse Authorization headers; callers must supply the raw token. Access-control policy is externalized via `should_skip_authentication`.
</code></pre></div></td></tr></table></div>
</details>
</div>
</div>
<div class="doc doc-object doc-function">
<h4 id="jwtlib.introspection.introspect_token" class="doc doc-heading">
<code class="doc-symbol doc-symbol-heading doc-symbol-function"></code> <span class="doc doc-object-name doc-function-name">introspect_token</span>
<span class="doc doc-labels">
<small class="doc doc-label doc-label-async"><code>async</code></small>
</span>
</h4>
<div class="language-python doc-signature highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span></span><span class="normal"><a href="#__codelineno-0-1">1</a></span></pre></div></td><td class="code"><div><pre><span></span><code><span id="__span-0-1"><a id="__codelineno-0-1" name="__codelineno-0-1"></a><span class="nf">introspect_token</span><span class="p">(</span><span class="n">token</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">Any</span><span class="p">]</span>
</span></code></pre></div></td></tr></table></div>
<div class="doc doc-contents ">
<p>Introspect a JWT using the external authentication service.</p>
<p><span class="doc-section-title">Parameters:</span></p>
<table>
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th>Description</th>
<th>Default</th>
</tr>
</thead>
<tbody>
<tr class="doc-section-item">
<td><code>token</code></td>
<td>
<code>str</code>
</td>
<td>
<div class="doc-md-description">
<p>JWT access token to introspect.</p>
</div>
</td>
<td>
<em>required</em>
</td>
</tr>
</tbody>
</table>
<p><span class="doc-section-title">Returns:</span></p>
<table>
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr class="doc-section-item">
<td>
<code>dict[str, <span title="typing.Any">Any</span>]</code>
</td>
<td>
<div class="doc-md-description">
<p>dict[str, Any]:
A dictionary containing the authenticated user's public payload.</p>
</div>
</td>
</tr>
</tbody>
</table>
<p><span class="doc-section-title">Raises:</span></p>
<table>
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr class="doc-section-item">
<td>
<code><a class="autorefs autorefs-internal" title="jwtlib.exceptions.InvalidToken" href="../exceptions/#jwtlib.exceptions.InvalidToken">InvalidToken</a></code>
</td>
<td>
<div class="doc-md-description">
<p>If the token is missing, invalid, inactive, or revoked.</p>
</div>
</td>
</tr>
<tr class="doc-section-item">
<td>
<code><a class="autorefs autorefs-internal" title="jwtlib.exceptions.AuthServiceUnavailable" href="../exceptions/#jwtlib.exceptions.AuthServiceUnavailable">AuthServiceUnavailable</a></code>
</td>
<td>
<div class="doc-md-description">
<p>If the auth service cannot be reached or fails unexpectedly.</p>
</div>
</td>
</tr>
</tbody>
</table>
<details class="notes" open>
<summary>Notes</summary>
<p><strong>Guarantees:</strong></p>
<div class="language-text highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span></span><span class="normal">1</span></pre></div></td><td class="code"><div><pre><span></span><code>- This function treats the auth service as the source of truth. No local JWT validation or signature checking is performed here. The returned payload is expected to be safe for public exposure.
</code></pre></div></td></tr></table></div>
</details>
</div>
</div>
</div>
</div>
</div>
</article>
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