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<div class="section" id="proxy">
<span id="id1"></span><h1>Proxy<a class="headerlink" href="#proxy" title="Permalink to this headline">¶</a></h1>
<div class="section" id="module-swift.proxy.server">
<span id="proxy-server"></span><h2>Proxy Server<a class="headerlink" href="#module-swift.proxy.server" title="Permalink to this headline">¶</a></h2>
<dl class="class">
<dt id="swift.proxy.server.AccountController">
<em class="property">class </em><tt class="descclassname">swift.proxy.server.</tt><tt class="descname">AccountController</tt><big>(</big><em>app</em>, <em>account_name</em>, <em>**kwargs</em><big>)</big><a class="headerlink" href="#swift.proxy.server.AccountController" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a title="swift.proxy.server.Controller" class="reference internal" href="#swift.proxy.server.Controller"><tt class="xref docutils literal"><span class="pre">swift.proxy.server.Controller</span></tt></a></p>
<p>WSGI controller for account requests</p>
<dl class="method">
<dt id="swift.proxy.server.AccountController.GETorHEAD">
<tt class="descname">GETorHEAD</tt><big>(</big><em>req</em><big>)</big><a class="headerlink" href="#swift.proxy.server.AccountController.GETorHEAD" title="Permalink to this definition">¶</a></dt>
<dd>Handler for HTTP GET/HEAD requests.</dd></dl>
</dd></dl>
<dl class="class">
<dt id="swift.proxy.server.Application">
<em class="property">class </em><tt class="descclassname">swift.proxy.server.</tt><tt class="descname">Application</tt><big>(</big><em>conf</em>, <em>memcache</em>, <em>logger=None</em>, <em>account_ring=None</em>, <em>container_ring=None</em>, <em>object_ring=None</em><big>)</big><a class="headerlink" href="#swift.proxy.server.Application" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a title="swift.proxy.server.BaseApplication" class="reference internal" href="#swift.proxy.server.BaseApplication"><tt class="xref docutils literal"><span class="pre">swift.proxy.server.BaseApplication</span></tt></a></p>
<p>WSGI application for the proxy server.</p>
<dl class="method">
<dt id="swift.proxy.server.Application.check_rate_limit">
<tt class="descname">check_rate_limit</tt><big>(</big><em>req</em>, <em>path_parts</em><big>)</big><a class="headerlink" href="#swift.proxy.server.Application.check_rate_limit" title="Permalink to this definition">¶</a></dt>
<dd><p>Check for rate limiting.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first last simple">
<li><em>req</em> – webob.Request object</li>
<li><em>path_parts</em> – parsed path dictionary</li>
</ul>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="swift.proxy.server.Application.handle_request">
<tt class="descname">handle_request</tt><big>(</big><em>req</em><big>)</big><a class="headerlink" href="#swift.proxy.server.Application.handle_request" title="Permalink to this definition">¶</a></dt>
<dd>Wraps the BaseApplication.handle_request and logs the request.</dd></dl>
<dl class="method">
<dt id="swift.proxy.server.Application.posthooklogger">
<tt class="descname">posthooklogger</tt><big>(</big><em>env</em>, <em>req</em><big>)</big><a class="headerlink" href="#swift.proxy.server.Application.posthooklogger" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
</dd></dl>
<dl class="class">
<dt id="swift.proxy.server.BaseApplication">
<em class="property">class </em><tt class="descclassname">swift.proxy.server.</tt><tt class="descname">BaseApplication</tt><big>(</big><em>conf</em>, <em>memcache</em>, <em>logger=None</em>, <em>account_ring=None</em>, <em>container_ring=None</em>, <em>object_ring=None</em><big>)</big><a class="headerlink" href="#swift.proxy.server.BaseApplication" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <tt class="xref docutils literal"><span class="pre">object</span></tt></p>
<p>Base WSGI application for the proxy server</p>
<dl class="method">
<dt id="swift.proxy.server.BaseApplication.check_rate_limit">
<tt class="descname">check_rate_limit</tt><big>(</big><em>req</em>, <em>path_parts</em><big>)</big><a class="headerlink" href="#swift.proxy.server.BaseApplication.check_rate_limit" title="Permalink to this definition">¶</a></dt>
<dd>Check for rate limiting.</dd></dl>
<dl class="method">
<dt id="swift.proxy.server.BaseApplication.get_controller">
<tt class="descname">get_controller</tt><big>(</big><em>path</em><big>)</big><a class="headerlink" href="#swift.proxy.server.BaseApplication.get_controller" title="Permalink to this definition">¶</a></dt>
<dd><p>Get the controller to handle a request.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field"><th class="field-name">Parameter:</th><td class="field-body"><em>path</em> – path from request</td>
</tr>
<tr class="field"><th class="field-name">Returns:</th><td class="field-body">tuple of (controller class, path dictionary)</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="swift.proxy.server.BaseApplication.handle_request">
<tt class="descname">handle_request</tt><big>(</big><em>req</em><big>)</big><a class="headerlink" href="#swift.proxy.server.BaseApplication.handle_request" title="Permalink to this definition">¶</a></dt>
<dd><p>Entry point for proxy server.
Should return a WSGI-style callable (such as webob.Response).</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field"><th class="field-name">Parameter:</th><td class="field-body"><em>req</em> – webob.Request object</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="swift.proxy.server.BaseApplication.posthooklogger">
<tt class="descname">posthooklogger</tt><big>(</big><em>env</em>, <em>req</em><big>)</big><a class="headerlink" href="#swift.proxy.server.BaseApplication.posthooklogger" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="method">
<dt id="swift.proxy.server.BaseApplication.update_request">
<tt class="descname">update_request</tt><big>(</big><em>req</em><big>)</big><a class="headerlink" href="#swift.proxy.server.BaseApplication.update_request" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
</dd></dl>
<dl class="class">
<dt id="swift.proxy.server.ContainerController">
<em class="property">class </em><tt class="descclassname">swift.proxy.server.</tt><tt class="descname">ContainerController</tt><big>(</big><em>app</em>, <em>account_name</em>, <em>container_name</em>, <em>**kwargs</em><big>)</big><a class="headerlink" href="#swift.proxy.server.ContainerController" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a title="swift.proxy.server.Controller" class="reference internal" href="#swift.proxy.server.Controller"><tt class="xref docutils literal"><span class="pre">swift.proxy.server.Controller</span></tt></a></p>
<p>WSGI controller for container requests</p>
<dl class="method">
<dt id="swift.proxy.server.ContainerController.DELETE">
<tt class="descname">DELETE</tt><big>(</big><em>*a</em>, <em>**kw</em><big>)</big><a class="headerlink" href="#swift.proxy.server.ContainerController.DELETE" title="Permalink to this definition">¶</a></dt>
<dd>HTTP DELETE request handler.</dd></dl>
<dl class="method">
<dt id="swift.proxy.server.ContainerController.GETorHEAD">
<tt class="descname">GETorHEAD</tt><big>(</big><em>req</em><big>)</big><a class="headerlink" href="#swift.proxy.server.ContainerController.GETorHEAD" title="Permalink to this definition">¶</a></dt>
<dd>Handler for HTTP GET/HEAD requests.</dd></dl>
<dl class="method">
<dt id="swift.proxy.server.ContainerController.PUT">
<tt class="descname">PUT</tt><big>(</big><em>*a</em>, <em>**kw</em><big>)</big><a class="headerlink" href="#swift.proxy.server.ContainerController.PUT" title="Permalink to this definition">¶</a></dt>
<dd>HTTP PUT request handler.</dd></dl>
</dd></dl>
<dl class="class">
<dt id="swift.proxy.server.Controller">
<em class="property">class </em><tt class="descclassname">swift.proxy.server.</tt><tt class="descname">Controller</tt><big>(</big><em>app</em><big>)</big><a class="headerlink" href="#swift.proxy.server.Controller" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <tt class="xref docutils literal"><span class="pre">object</span></tt></p>
<p>Base WSGI controller class for the proxy</p>
<dl class="method">
<dt id="swift.proxy.server.Controller.GET">
<tt class="descname">GET</tt><big>(</big><em>*a</em>, <em>**kw</em><big>)</big><a class="headerlink" href="#swift.proxy.server.Controller.GET" title="Permalink to this definition">¶</a></dt>
<dd>Handler for HTTP GET requests.</dd></dl>
<dl class="method">
<dt id="swift.proxy.server.Controller.GETorHEAD_base">
<tt class="descname">GETorHEAD_base</tt><big>(</big><em>req</em>, <em>server_type</em>, <em>partition</em>, <em>nodes</em>, <em>path</em>, <em>attempts</em><big>)</big><a class="headerlink" href="#swift.proxy.server.Controller.GETorHEAD_base" title="Permalink to this definition">¶</a></dt>
<dd><p>Base handler for HTTP GET or HEAD requests.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
<li><em>req</em> – webob.Request object</li>
<li><em>server_type</em> – server type</li>
<li><em>partition</em> – partition</li>
<li><em>nodes</em> – nodes</li>
<li><em>path</em> – path for the request</li>
<li><em>attempts</em> – number of attempts to try</li>
</ul>
</td>
</tr>
<tr class="field"><th class="field-name">Returns:</th><td class="field-body"><p class="first last">webob.Response object</p>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="swift.proxy.server.Controller.HEAD">
<tt class="descname">HEAD</tt><big>(</big><em>*a</em>, <em>**kw</em><big>)</big><a class="headerlink" href="#swift.proxy.server.Controller.HEAD" title="Permalink to this definition">¶</a></dt>
<dd>Handler for HTTP HEAD requests.</dd></dl>
<dl class="method">
<dt id="swift.proxy.server.Controller.account_info">
<tt class="descname">account_info</tt><big>(</big><em>account</em><big>)</big><a class="headerlink" href="#swift.proxy.server.Controller.account_info" title="Permalink to this definition">¶</a></dt>
<dd><p>Get account information, and also verify that the account exists.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field"><th class="field-name">Parameter:</th><td class="field-body"><em>account</em> – name of the account to get the info for</td>
</tr>
<tr class="field"><th class="field-name">Returns:</th><td class="field-body">tuple of (account partition, account nodes) or (None, None)
if it does not exist</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="swift.proxy.server.Controller.best_response">
<tt class="descname">best_response</tt><big>(</big><em>req</em>, <em>statuses</em>, <em>reasons</em>, <em>bodies</em>, <em>server_type</em>, <em>etag=None</em><big>)</big><a class="headerlink" href="#swift.proxy.server.Controller.best_response" title="Permalink to this definition">¶</a></dt>
<dd><p>Given a list of responses from several servers, choose the best to
return to the API.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
<li><em>req</em> – webob.Request object</li>
<li><em>statuses</em> – list of statuses returned</li>
<li><em>reasons</em> – list of reasons for each status</li>
<li><em>bodies</em> – bodies of each response</li>
<li><em>server_type</em> – type of server the responses came from</li>
<li><em>etag</em> – etag</li>
</ul>
</td>
</tr>
<tr class="field"><th class="field-name">Returns:</th><td class="field-body"><p class="first last">webob.Response object with the correct status, body, etc. set</p>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="swift.proxy.server.Controller.container_info">
<tt class="descname">container_info</tt><big>(</big><em>account</em>, <em>container</em><big>)</big><a class="headerlink" href="#swift.proxy.server.Controller.container_info" title="Permalink to this definition">¶</a></dt>
<dd><p>Get container information and thusly verify container existance.
This will also make a call to account_info to verify that the
account exists.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
<li><em>account</em> – account name for the container</li>
<li><em>container</em> – container name to look up</li>
</ul>
</td>
</tr>
<tr class="field"><th class="field-name">Returns:</th><td class="field-body"><p class="first last">tuple of (container partition, container nodes) or
(None, None) if the container does not exist</p>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="swift.proxy.server.Controller.error_increment">
<tt class="descname">error_increment</tt><big>(</big><em>node</em><big>)</big><a class="headerlink" href="#swift.proxy.server.Controller.error_increment" title="Permalink to this definition">¶</a></dt>
<dd><p>Handles incrementing error counts when talking to nodes.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field"><th class="field-name">Parameter:</th><td class="field-body"><em>node</em> – dictionary of node to increment the error count for</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="swift.proxy.server.Controller.error_limit">
<tt class="descname">error_limit</tt><big>(</big><em>node</em><big>)</big><a class="headerlink" href="#swift.proxy.server.Controller.error_limit" title="Permalink to this definition">¶</a></dt>
<dd><p>Mark a node as error limited.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field"><th class="field-name">Parameter:</th><td class="field-body"><em>node</em> – dictionary of node to error limit</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="swift.proxy.server.Controller.error_limited">
<tt class="descname">error_limited</tt><big>(</big><em>node</em><big>)</big><a class="headerlink" href="#swift.proxy.server.Controller.error_limited" title="Permalink to this definition">¶</a></dt>
<dd><p>Check if the node is currently error limited.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field"><th class="field-name">Parameter:</th><td class="field-body"><em>node</em> – dictionary of node to check</td>
</tr>
<tr class="field"><th class="field-name">Returns:</th><td class="field-body">True if error limited, False otherwise</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="swift.proxy.server.Controller.error_occurred">
<tt class="descname">error_occurred</tt><big>(</big><em>node</em>, <em>msg</em><big>)</big><a class="headerlink" href="#swift.proxy.server.Controller.error_occurred" title="Permalink to this definition">¶</a></dt>
<dd><p>Handle logging, and handling of errors.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first last simple">
<li><em>node</em> – dictionary of node to handle errors for</li>
<li><em>msg</em> – error message</li>
</ul>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="swift.proxy.server.Controller.exception_occurred">
<tt class="descname">exception_occurred</tt><big>(</big><em>node</em>, <em>typ</em>, <em>additional_info</em><big>)</big><a class="headerlink" href="#swift.proxy.server.Controller.exception_occurred" title="Permalink to this definition">¶</a></dt>
<dd><p>Handle logging of generic exceptions.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first last simple">
<li><em>node</em> – dictionary of node to log the error for</li>
<li><em>typ</em> – server type</li>
<li><em>additional_info</em> – additional information to log</li>
</ul>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="swift.proxy.server.Controller.get_update_nodes">
<tt class="descname">get_update_nodes</tt><big>(</big><em>partition</em>, <em>nodes</em>, <em>ring</em><big>)</big><a class="headerlink" href="#swift.proxy.server.Controller.get_update_nodes" title="Permalink to this definition">¶</a></dt>
<dd>Returns ring.replica_count nodes; the nodes will not be error
limited, if possible.</dd></dl>
<dl class="method">
<dt id="swift.proxy.server.Controller.iter_nodes">
<tt class="descname">iter_nodes</tt><big>(</big><em>partition</em>, <em>nodes</em>, <em>ring</em><big>)</big><a class="headerlink" href="#swift.proxy.server.Controller.iter_nodes" title="Permalink to this definition">¶</a></dt>
<dd><p>Node iterator that will first iterate over the normal nodes for a
partition and then the handoff partitions for the node.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first last simple">
<li><em>partition</em> – partition to iterate nodes for</li>
<li><em>nodes</em> – list of node dicts from the ring</li>
<li><em>ring</em> – ring to get handoff nodes from</li>
</ul>
</td>
</tr>
</tbody>
</table>
</dd></dl>
</dd></dl>
<dl class="class">
<dt id="swift.proxy.server.ObjectController">
<em class="property">class </em><tt class="descclassname">swift.proxy.server.</tt><tt class="descname">ObjectController</tt><big>(</big><em>app</em>, <em>account_name</em>, <em>container_name</em>, <em>object_name</em>, <em>**kwargs</em><big>)</big><a class="headerlink" href="#swift.proxy.server.ObjectController" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a title="swift.proxy.server.Controller" class="reference internal" href="#swift.proxy.server.Controller"><tt class="xref docutils literal"><span class="pre">swift.proxy.server.Controller</span></tt></a></p>
<p>WSGI controller for object requests.</p>
<dl class="method">
<dt id="swift.proxy.server.ObjectController.COPY">
<tt class="descname">COPY</tt><big>(</big><em>*a</em>, <em>**kw</em><big>)</big><a class="headerlink" href="#swift.proxy.server.ObjectController.COPY" title="Permalink to this definition">¶</a></dt>
<dd>HTTP COPY request handler.</dd></dl>
<dl class="method">
<dt id="swift.proxy.server.ObjectController.DELETE">
<tt class="descname">DELETE</tt><big>(</big><em>*a</em>, <em>**kw</em><big>)</big><a class="headerlink" href="#swift.proxy.server.ObjectController.DELETE" title="Permalink to this definition">¶</a></dt>
<dd>HTTP DELETE request handler.</dd></dl>
<dl class="method">
<dt id="swift.proxy.server.ObjectController.GETorHEAD">
<tt class="descname">GETorHEAD</tt><big>(</big><em>req</em><big>)</big><a class="headerlink" href="#swift.proxy.server.ObjectController.GETorHEAD" title="Permalink to this definition">¶</a></dt>
<dd>Handle HTTP GET or HEAD requests.</dd></dl>
<dl class="method">
<dt id="swift.proxy.server.ObjectController.POST">
<tt class="descname">POST</tt><big>(</big><em>*a</em>, <em>**kw</em><big>)</big><a class="headerlink" href="#swift.proxy.server.ObjectController.POST" title="Permalink to this definition">¶</a></dt>
<dd>HTTP POST request handler.</dd></dl>
<dl class="method">
<dt id="swift.proxy.server.ObjectController.PUT">
<tt class="descname">PUT</tt><big>(</big><em>*a</em>, <em>**kw</em><big>)</big><a class="headerlink" href="#swift.proxy.server.ObjectController.PUT" title="Permalink to this definition">¶</a></dt>
<dd>HTTP PUT request handler.</dd></dl>
<dl class="method">
<dt id="swift.proxy.server.ObjectController.node_post_or_delete">
<tt class="descname">node_post_or_delete</tt><big>(</big><em>req</em>, <em>partition</em>, <em>node</em>, <em>path</em><big>)</big><a class="headerlink" href="#swift.proxy.server.ObjectController.node_post_or_delete" title="Permalink to this definition">¶</a></dt>
<dd><p>Handle common POST/DELETE functionality</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first last simple">
<li><em>req</em> – webob.Request object</li>
<li><em>partition</em> – partition for the object</li>
<li><em>node</em> – node dictionary for the object</li>
<li><em>path</em> – path to send for the request</li>
</ul>
</td>
</tr>
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</table>
</dd></dl>
</dd></dl>
<dl class="function">
<dt id="swift.proxy.server.public">
<tt class="descclassname">swift.proxy.server.</tt><tt class="descname">public</tt><big>(</big><em>func</em><big>)</big><a class="headerlink" href="#swift.proxy.server.public" title="Permalink to this definition">¶</a></dt>
<dd><p>Decorator to declare which methods are public accessible as HTTP requests</p>
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<col class="field-name" />
<col class="field-body" />
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<tr class="field"><th class="field-name">Parameter:</th><td class="field-body"><em>func</em> – function to make public</td>
</tr>
</tbody>
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</dd></dl>
<dl class="function">
<dt id="swift.proxy.server.update_headers">
<tt class="descclassname">swift.proxy.server.</tt><tt class="descname">update_headers</tt><big>(</big><em>response</em>, <em>headers</em><big>)</big><a class="headerlink" href="#swift.proxy.server.update_headers" title="Permalink to this definition">¶</a></dt>
<dd><p>Helper function to update headers in the response.</p>
<table class="docutils field-list" frame="void" rules="none">
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<col class="field-body" />
<tbody valign="top">
<tr class="field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first last simple">
<li><em>response</em> – webob.Response object</li>
<li><em>headers</em> – dictionary headers</li>
</ul>
</td>
</tr>
</tbody>
</table>
</dd></dl>
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