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<!doctype html PUBLIC "-//W3C//DTD html 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
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<title>Coverage for mongoengine.connection: 72%</title>
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<h1>Coverage for <b>mongoengine.connection</b> :
<span class='pc_cov'>72%</span>
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76 statements
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<span class='mis shortkey_m button_toggle_mis'>21 missing</span>
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</td>
<td class='text' valign='top'>
<p id='t1' class='stm run hide_run'><span class='key'>import</span> <span class='nam'>pymongo</span><span class='strut'> </span></p>
<p id='t2' class='stm run hide_run'><span class='key'>from</span> <span class='nam'>pymongo</span> <span class='key'>import</span> <span class='nam'>Connection</span><span class='op'>,</span> <span class='nam'>ReplicaSetConnection</span><span class='op'>,</span> <span class='nam'>uri_parser</span><span class='strut'> </span></p>
<p id='t3' class='pln'><span class='strut'> </span></p>
<p id='t4' class='pln'><span class='strut'> </span></p>
<p id='t5' class='stm run hide_run'><span class='nam'>__all__</span> <span class='op'>=</span> <span class='op'>[</span><span class='str'>'ConnectionError'</span><span class='op'>,</span> <span class='str'>'connect'</span><span class='op'>,</span> <span class='str'>'register_connection'</span><span class='op'>,</span><span class='strut'> </span></p>
<p id='t6' class='pln'> <span class='str'>'DEFAULT_CONNECTION_NAME'</span><span class='op'>]</span><span class='strut'> </span></p>
<p id='t7' class='pln'><span class='strut'> </span></p>
<p id='t8' class='pln'><span class='strut'> </span></p>
<p id='t9' class='stm run hide_run'><span class='nam'>DEFAULT_CONNECTION_NAME</span> <span class='op'>=</span> <span class='str'>'default'</span><span class='strut'> </span></p>
<p id='t10' class='pln'><span class='strut'> </span></p>
<p id='t11' class='pln'><span class='strut'> </span></p>
<p id='t12' class='stm run hide_run'><span class='key'>class</span> <span class='nam'>ConnectionError</span><span class='op'>(</span><span class='nam'>Exception</span><span class='op'>)</span><span class='op'>:</span><span class='strut'> </span></p>
<p id='t13' class='stm run hide_run'> <span class='key'>pass</span><span class='strut'> </span></p>
<p id='t14' class='pln'><span class='strut'> </span></p>
<p id='t15' class='pln'><span class='strut'> </span></p>
<p id='t16' class='stm run hide_run'><span class='nam'>_connection_settings</span> <span class='op'>=</span> <span class='op'>{</span><span class='op'>}</span><span class='strut'> </span></p>
<p id='t17' class='stm run hide_run'><span class='nam'>_connections</span> <span class='op'>=</span> <span class='op'>{</span><span class='op'>}</span><span class='strut'> </span></p>
<p id='t18' class='stm run hide_run'><span class='nam'>_dbs</span> <span class='op'>=</span> <span class='op'>{</span><span class='op'>}</span><span class='strut'> </span></p>
<p id='t19' class='pln'><span class='strut'> </span></p>
<p id='t20' class='pln'><span class='strut'> </span></p>
<p id='t21' class='stm run hide_run'><span class='key'>def</span> <span class='nam'>register_connection</span><span class='op'>(</span><span class='nam'>alias</span><span class='op'>,</span> <span class='nam'>name</span><span class='op'>,</span> <span class='nam'>host</span><span class='op'>=</span><span class='str'>'localhost'</span><span class='op'>,</span> <span class='nam'>port</span><span class='op'>=</span><span class='num'>27017</span><span class='op'>,</span><span class='strut'> </span></p>
<p id='t22' class='pln'> <span class='nam'>is_slave</span><span class='op'>=</span><span class='nam'>False</span><span class='op'>,</span> <span class='nam'>read_preference</span><span class='op'>=</span><span class='nam'>False</span><span class='op'>,</span> <span class='nam'>slaves</span><span class='op'>=</span><span class='nam'>None</span><span class='op'>,</span><span class='strut'> </span></p>
<p id='t23' class='pln'> <span class='nam'>username</span><span class='op'>=</span><span class='nam'>None</span><span class='op'>,</span> <span class='nam'>password</span><span class='op'>=</span><span class='nam'>None</span><span class='op'>,</span> <span class='op'>**</span><span class='nam'>kwargs</span><span class='op'>)</span><span class='op'>:</span><span class='strut'> </span></p>
<p id='t24' class='pln'> <span class='str'>"""Add a connection.</span><span class='strut'> </span></p>
<p id='t25' class='pln'><span class='strut'> </span></p>
<p id='t26' class='pln'><span class='str'> :param alias: the name that will be used to refer to this connection</span><span class='strut'> </span></p>
<p id='t27' class='pln'><span class='str'> throughout MongoEngine</span><span class='strut'> </span></p>
<p id='t28' class='pln'><span class='str'> :param name: the name of the specific database to use</span><span class='strut'> </span></p>
<p id='t29' class='pln'><span class='str'> :param host: the host name of the :program:`mongod` instance to connect to</span><span class='strut'> </span></p>
<p id='t30' class='pln'><span class='str'> :param port: the port that the :program:`mongod` instance is running on</span><span class='strut'> </span></p>
<p id='t31' class='pln'><span class='str'> :param is_slave: whether the connection can act as a slave ** Depreciated pymongo 2.0.1+</span><span class='strut'> </span></p>
<p id='t32' class='pln'><span class='str'> :param read_preference: The read preference for the collection ** Added pymongo 2.1</span><span class='strut'> </span></p>
<p id='t33' class='pln'><span class='str'> :param slaves: a list of aliases of slave connections; each of these must</span><span class='strut'> </span></p>
<p id='t34' class='pln'><span class='str'> be a registered connection that has :attr:`is_slave` set to ``True``</span><span class='strut'> </span></p>
<p id='t35' class='pln'><span class='str'> :param username: username to authenticate with</span><span class='strut'> </span></p>
<p id='t36' class='pln'><span class='str'> :param password: password to authenticate with</span><span class='strut'> </span></p>
<p id='t37' class='pln'><span class='str'> :param kwargs: allow ad-hoc parameters to be passed into the pymongo driver</span><span class='strut'> </span></p>
<p id='t38' class='pln'><span class='strut'> </span></p>
<p id='t39' class='pln'><span class='str'> """</span><span class='strut'> </span></p>
<p id='t40' class='pln'> <span class='key'>global</span> <span class='nam'>_connection_settings</span><span class='strut'> </span></p>
<p id='t41' class='pln'><span class='strut'> </span></p>
<p id='t42' class='stm run hide_run'> <span class='nam'>conn_settings</span> <span class='op'>=</span> <span class='op'>{</span><span class='strut'> </span></p>
<p id='t43' class='pln'> <span class='str'>'name'</span><span class='op'>:</span> <span class='nam'>name</span><span class='op'>,</span><span class='strut'> </span></p>
<p id='t44' class='pln'> <span class='str'>'host'</span><span class='op'>:</span> <span class='nam'>host</span><span class='op'>,</span><span class='strut'> </span></p>
<p id='t45' class='pln'> <span class='str'>'port'</span><span class='op'>:</span> <span class='nam'>port</span><span class='op'>,</span><span class='strut'> </span></p>
<p id='t46' class='pln'> <span class='str'>'is_slave'</span><span class='op'>:</span> <span class='nam'>is_slave</span><span class='op'>,</span><span class='strut'> </span></p>
<p id='t47' class='pln'> <span class='str'>'slaves'</span><span class='op'>:</span> <span class='nam'>slaves</span> <span class='key'>or</span> <span class='op'>[</span><span class='op'>]</span><span class='op'>,</span><span class='strut'> </span></p>
<p id='t48' class='pln'> <span class='str'>'username'</span><span class='op'>:</span> <span class='nam'>username</span><span class='op'>,</span><span class='strut'> </span></p>
<p id='t49' class='pln'> <span class='str'>'password'</span><span class='op'>:</span> <span class='nam'>password</span><span class='op'>,</span><span class='strut'> </span></p>
<p id='t50' class='pln'> <span class='str'>'read_preference'</span><span class='op'>:</span> <span class='nam'>read_preference</span><span class='strut'> </span></p>
<p id='t51' class='pln'> <span class='op'>}</span><span class='strut'> </span></p>
<p id='t52' class='pln'><span class='strut'> </span></p>
<p id='t53' class='pln'> <span class='com'># Handle uri style connections</span><span class='strut'> </span></p>
<p id='t54' class='stm run hide_run'> <span class='key'>if</span> <span class='str'>"://"</span> <span class='key'>in</span> <span class='nam'>host</span><span class='op'>:</span><span class='strut'> </span></p>
<p id='t55' class='stm run hide_run'> <span class='nam'>uri_dict</span> <span class='op'>=</span> <span class='nam'>uri_parser</span><span class='op'>.</span><span class='nam'>parse_uri</span><span class='op'>(</span><span class='nam'>host</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t56' class='stm run hide_run'> <span class='key'>if</span> <span class='nam'>uri_dict</span><span class='op'>.</span><span class='nam'>get</span><span class='op'>(</span><span class='str'>'database'</span><span class='op'>)</span> <span class='key'>is</span> <span class='nam'>None</span><span class='op'>:</span><span class='strut'> </span></p>
<p id='t57' class='stm run hide_run'> <span class='key'>raise</span> <span class='nam'>ConnectionError</span><span class='op'>(</span><span class='str'>"If using URI style connection include "</span><span class='xx'>\</span><span class='strut'> </span></p>
<p id='t58' class='pln'> <span class='str'>"database name in string"</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t59' class='stm run hide_run'> <span class='nam'>conn_settings</span><span class='op'>.</span><span class='nam'>update</span><span class='op'>(</span><span class='op'>{</span><span class='strut'> </span></p>
<p id='t60' class='pln'> <span class='str'>'host'</span><span class='op'>:</span> <span class='nam'>host</span><span class='op'>,</span><span class='strut'> </span></p>
<p id='t61' class='pln'> <span class='str'>'name'</span><span class='op'>:</span> <span class='nam'>uri_dict</span><span class='op'>.</span><span class='nam'>get</span><span class='op'>(</span><span class='str'>'database'</span><span class='op'>)</span><span class='op'>,</span><span class='strut'> </span></p>
<p id='t62' class='pln'> <span class='str'>'username'</span><span class='op'>:</span> <span class='nam'>uri_dict</span><span class='op'>.</span><span class='nam'>get</span><span class='op'>(</span><span class='str'>'username'</span><span class='op'>)</span><span class='op'>,</span><span class='strut'> </span></p>
<p id='t63' class='pln'> <span class='str'>'password'</span><span class='op'>:</span> <span class='nam'>uri_dict</span><span class='op'>.</span><span class='nam'>get</span><span class='op'>(</span><span class='str'>'password'</span><span class='op'>)</span><span class='op'>,</span><span class='strut'> </span></p>
<p id='t64' class='pln'> <span class='str'>'read_preference'</span><span class='op'>:</span> <span class='nam'>read_preference</span><span class='op'>,</span><span class='strut'> </span></p>
<p id='t65' class='pln'> <span class='op'>}</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t66' class='stm run hide_run'> <span class='key'>if</span> <span class='str'>"replicaSet"</span> <span class='key'>in</span> <span class='nam'>host</span><span class='op'>:</span><span class='strut'> </span></p>
<p id='t67' class='stm mis'> <span class='nam'>conn_settings</span><span class='op'>[</span><span class='str'>'replicaSet'</span><span class='op'>]</span> <span class='op'>=</span> <span class='nam'>True</span><span class='strut'> </span></p>
<p id='t68' class='pln'><span class='strut'> </span></p>
<p id='t69' class='stm run hide_run'> <span class='nam'>conn_settings</span><span class='op'>.</span><span class='nam'>update</span><span class='op'>(</span><span class='nam'>kwargs</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t70' class='stm run hide_run'> <span class='nam'>_connection_settings</span><span class='op'>[</span><span class='nam'>alias</span><span class='op'>]</span> <span class='op'>=</span> <span class='nam'>conn_settings</span><span class='strut'> </span></p>
<p id='t71' class='pln'><span class='strut'> </span></p>
<p id='t72' class='pln'><span class='strut'> </span></p>
<p id='t73' class='stm run hide_run'><span class='key'>def</span> <span class='nam'>disconnect</span><span class='op'>(</span><span class='nam'>alias</span><span class='op'>=</span><span class='nam'>DEFAULT_CONNECTION_NAME</span><span class='op'>)</span><span class='op'>:</span><span class='strut'> </span></p>
<p id='t74' class='pln'> <span class='key'>global</span> <span class='nam'>_connections</span><span class='strut'> </span></p>
<p id='t75' class='pln'> <span class='key'>global</span> <span class='nam'>_dbs</span><span class='strut'> </span></p>
<p id='t76' class='pln'><span class='strut'> </span></p>
<p id='t77' class='stm mis'> <span class='key'>if</span> <span class='nam'>alias</span> <span class='key'>in</span> <span class='nam'>_connections</span><span class='op'>:</span><span class='strut'> </span></p>
<p id='t78' class='stm mis'> <span class='nam'>get_connection</span><span class='op'>(</span><span class='nam'>alias</span><span class='op'>=</span><span class='nam'>alias</span><span class='op'>)</span><span class='op'>.</span><span class='nam'>disconnect</span><span class='op'>(</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t79' class='stm mis'> <span class='key'>del</span> <span class='nam'>_connections</span><span class='op'>[</span><span class='nam'>alias</span><span class='op'>]</span><span class='strut'> </span></p>
<p id='t80' class='stm mis'> <span class='key'>if</span> <span class='nam'>alias</span> <span class='key'>in</span> <span class='nam'>_dbs</span><span class='op'>:</span><span class='strut'> </span></p>
<p id='t81' class='stm mis'> <span class='key'>del</span> <span class='nam'>_dbs</span><span class='op'>[</span><span class='nam'>alias</span><span class='op'>]</span><span class='strut'> </span></p>
<p id='t82' class='pln'><span class='strut'> </span></p>
<p id='t83' class='pln'><span class='strut'> </span></p>
<p id='t84' class='stm run hide_run'><span class='key'>def</span> <span class='nam'>get_connection</span><span class='op'>(</span><span class='nam'>alias</span><span class='op'>=</span><span class='nam'>DEFAULT_CONNECTION_NAME</span><span class='op'>,</span> <span class='nam'>reconnect</span><span class='op'>=</span><span class='nam'>False</span><span class='op'>)</span><span class='op'>:</span><span class='strut'> </span></p>
<p id='t85' class='pln'> <span class='key'>global</span> <span class='nam'>_connections</span><span class='strut'> </span></p>
<p id='t86' class='pln'> <span class='com'># Connect to the database if not already connected</span><span class='strut'> </span></p>
<p id='t87' class='stm run hide_run'> <span class='key'>if</span> <span class='nam'>reconnect</span><span class='op'>:</span><span class='strut'> </span></p>
<p id='t88' class='stm mis'> <span class='nam'>disconnect</span><span class='op'>(</span><span class='nam'>alias</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t89' class='pln'><span class='strut'> </span></p>
<p id='t90' class='stm run hide_run'> <span class='key'>if</span> <span class='nam'>alias</span> <span class='key'>not</span> <span class='key'>in</span> <span class='nam'>_connections</span><span class='op'>:</span><span class='strut'> </span></p>
<p id='t91' class='stm run hide_run'> <span class='key'>if</span> <span class='nam'>alias</span> <span class='key'>not</span> <span class='key'>in</span> <span class='nam'>_connection_settings</span><span class='op'>:</span><span class='strut'> </span></p>
<p id='t92' class='stm run hide_run'> <span class='nam'>msg</span> <span class='op'>=</span> <span class='str'>'Connection with alias "%s" has not been defined'</span> <span class='op'>%</span> <span class='nam'>alias</span><span class='strut'> </span></p>
<p id='t93' class='stm run hide_run'> <span class='key'>if</span> <span class='nam'>alias</span> <span class='op'>==</span> <span class='nam'>DEFAULT_CONNECTION_NAME</span><span class='op'>:</span><span class='strut'> </span></p>
<p id='t94' class='stm run hide_run'> <span class='nam'>msg</span> <span class='op'>=</span> <span class='str'>'You have not defined a default connection'</span><span class='strut'> </span></p>
<p id='t95' class='stm run hide_run'> <span class='key'>raise</span> <span class='nam'>ConnectionError</span><span class='op'>(</span><span class='nam'>msg</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t96' class='stm run hide_run'> <span class='nam'>conn_settings</span> <span class='op'>=</span> <span class='nam'>_connection_settings</span><span class='op'>[</span><span class='nam'>alias</span><span class='op'>]</span><span class='op'>.</span><span class='nam'>copy</span><span class='op'>(</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t97' class='pln'><span class='strut'> </span></p>
<p id='t98' class='stm run hide_run'> <span class='key'>if</span> <span class='nam'>hasattr</span><span class='op'>(</span><span class='nam'>pymongo</span><span class='op'>,</span> <span class='str'>'version_tuple'</span><span class='op'>)</span><span class='op'>:</span> <span class='com'># Support for 2.1+</span><span class='strut'> </span></p>
<p id='t99' class='stm run hide_run'> <span class='nam'>conn_settings</span><span class='op'>.</span><span class='nam'>pop</span><span class='op'>(</span><span class='str'>'name'</span><span class='op'>,</span> <span class='nam'>None</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t100' class='stm run hide_run'> <span class='nam'>conn_settings</span><span class='op'>.</span><span class='nam'>pop</span><span class='op'>(</span><span class='str'>'slaves'</span><span class='op'>,</span> <span class='nam'>None</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t101' class='stm run hide_run'> <span class='nam'>conn_settings</span><span class='op'>.</span><span class='nam'>pop</span><span class='op'>(</span><span class='str'>'is_slave'</span><span class='op'>,</span> <span class='nam'>None</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t102' class='stm run hide_run'> <span class='nam'>conn_settings</span><span class='op'>.</span><span class='nam'>pop</span><span class='op'>(</span><span class='str'>'username'</span><span class='op'>,</span> <span class='nam'>None</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t103' class='stm run hide_run'> <span class='nam'>conn_settings</span><span class='op'>.</span><span class='nam'>pop</span><span class='op'>(</span><span class='str'>'password'</span><span class='op'>,</span> <span class='nam'>None</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t104' class='pln'> <span class='key'>else</span><span class='op'>:</span><span class='strut'> </span></p>
<p id='t105' class='pln'> <span class='com'># Get all the slave connections</span><span class='strut'> </span></p>
<p id='t106' class='stm mis'> <span class='key'>if</span> <span class='str'>'slaves'</span> <span class='key'>in</span> <span class='nam'>conn_settings</span><span class='op'>:</span><span class='strut'> </span></p>
<p id='t107' class='stm mis'> <span class='nam'>slaves</span> <span class='op'>=</span> <span class='op'>[</span><span class='op'>]</span><span class='strut'> </span></p>
<p id='t108' class='stm mis'> <span class='key'>for</span> <span class='nam'>slave_alias</span> <span class='key'>in</span> <span class='nam'>conn_settings</span><span class='op'>[</span><span class='str'>'slaves'</span><span class='op'>]</span><span class='op'>:</span><span class='strut'> </span></p>
<p id='t109' class='stm mis'> <span class='nam'>slaves</span><span class='op'>.</span><span class='nam'>append</span><span class='op'>(</span><span class='nam'>get_connection</span><span class='op'>(</span><span class='nam'>slave_alias</span><span class='op'>)</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t110' class='stm mis'> <span class='nam'>conn_settings</span><span class='op'>[</span><span class='str'>'slaves'</span><span class='op'>]</span> <span class='op'>=</span> <span class='nam'>slaves</span><span class='strut'> </span></p>
<p id='t111' class='stm mis'> <span class='nam'>conn_settings</span><span class='op'>.</span><span class='nam'>pop</span><span class='op'>(</span><span class='str'>'read_preference'</span><span class='op'>,</span> <span class='nam'>None</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t112' class='pln'><span class='strut'> </span></p>
<p id='t113' class='stm run hide_run'> <span class='nam'>connection_class</span> <span class='op'>=</span> <span class='nam'>Connection</span><span class='strut'> </span></p>
<p id='t114' class='stm run hide_run'> <span class='key'>if</span> <span class='str'>'replicaSet'</span> <span class='key'>in</span> <span class='nam'>conn_settings</span><span class='op'>:</span><span class='strut'> </span></p>
<p id='t115' class='stm mis'> <span class='nam'>conn_settings</span><span class='op'>[</span><span class='str'>'hosts_or_uri'</span><span class='op'>]</span> <span class='op'>=</span> <span class='nam'>conn_settings</span><span class='op'>.</span><span class='nam'>pop</span><span class='op'>(</span><span class='str'>'host'</span><span class='op'>,</span> <span class='nam'>None</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t116' class='pln'> <span class='com'># Discard port since it can't be used on ReplicaSetConnection</span><span class='strut'> </span></p>
<p id='t117' class='stm mis'> <span class='nam'>conn_settings</span><span class='op'>.</span><span class='nam'>pop</span><span class='op'>(</span><span class='str'>'port'</span><span class='op'>,</span> <span class='nam'>None</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t118' class='pln'> <span class='com'># Discard replicaSet if not base string</span><span class='strut'> </span></p>
<p id='t119' class='stm mis'> <span class='key'>if</span> <span class='key'>not</span> <span class='nam'>isinstance</span><span class='op'>(</span><span class='nam'>conn_settings</span><span class='op'>[</span><span class='str'>'replicaSet'</span><span class='op'>]</span><span class='op'>,</span> <span class='nam'>basestring</span><span class='op'>)</span><span class='op'>:</span><span class='strut'> </span></p>
<p id='t120' class='stm mis'> <span class='nam'>conn_settings</span><span class='op'>.</span><span class='nam'>pop</span><span class='op'>(</span><span class='str'>'replicaSet'</span><span class='op'>,</span> <span class='nam'>None</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t121' class='stm mis'> <span class='nam'>connection_class</span> <span class='op'>=</span> <span class='nam'>ReplicaSetConnection</span><span class='strut'> </span></p>
<p id='t122' class='pln'><span class='strut'> </span></p>
<p id='t123' class='stm run hide_run'> <span class='key'>try</span><span class='op'>:</span><span class='strut'> </span></p>
<p id='t124' class='stm run hide_run'> <span class='nam'>_connections</span><span class='op'>[</span><span class='nam'>alias</span><span class='op'>]</span> <span class='op'>=</span> <span class='nam'>connection_class</span><span class='op'>(</span><span class='op'>**</span><span class='nam'>conn_settings</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t125' class='stm mis'> <span class='key'>except</span> <span class='nam'>Exception</span><span class='op'>,</span> <span class='nam'>e</span><span class='op'>:</span><span class='strut'> </span></p>
<p id='t126' class='stm mis'> <span class='key'>raise</span> <span class='nam'>ConnectionError</span><span class='op'>(</span><span class='str'>"Cannot connect to database %s :\n%s"</span> <span class='op'>%</span> <span class='op'>(</span><span class='nam'>alias</span><span class='op'>,</span> <span class='nam'>e</span><span class='op'>)</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t127' class='stm run hide_run'> <span class='key'>return</span> <span class='nam'>_connections</span><span class='op'>[</span><span class='nam'>alias</span><span class='op'>]</span><span class='strut'> </span></p>
<p id='t128' class='pln'><span class='strut'> </span></p>
<p id='t129' class='pln'><span class='strut'> </span></p>
<p id='t130' class='stm run hide_run'><span class='key'>def</span> <span class='nam'>get_db</span><span class='op'>(</span><span class='nam'>alias</span><span class='op'>=</span><span class='nam'>DEFAULT_CONNECTION_NAME</span><span class='op'>,</span> <span class='nam'>reconnect</span><span class='op'>=</span><span class='nam'>False</span><span class='op'>)</span><span class='op'>:</span><span class='strut'> </span></p>
<p id='t131' class='pln'> <span class='key'>global</span> <span class='nam'>_dbs</span><span class='strut'> </span></p>
<p id='t132' class='stm run hide_run'> <span class='key'>if</span> <span class='nam'>reconnect</span><span class='op'>:</span><span class='strut'> </span></p>
<p id='t133' class='stm mis'> <span class='nam'>disconnect</span><span class='op'>(</span><span class='nam'>alias</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t134' class='pln'><span class='strut'> </span></p>
<p id='t135' class='stm run hide_run'> <span class='key'>if</span> <span class='nam'>alias</span> <span class='key'>not</span> <span class='key'>in</span> <span class='nam'>_dbs</span><span class='op'>:</span><span class='strut'> </span></p>
<p id='t136' class='stm run hide_run'> <span class='nam'>conn</span> <span class='op'>=</span> <span class='nam'>get_connection</span><span class='op'>(</span><span class='nam'>alias</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t137' class='stm run hide_run'> <span class='nam'>conn_settings</span> <span class='op'>=</span> <span class='nam'>_connection_settings</span><span class='op'>[</span><span class='nam'>alias</span><span class='op'>]</span><span class='strut'> </span></p>
<p id='t138' class='stm run hide_run'> <span class='nam'>_dbs</span><span class='op'>[</span><span class='nam'>alias</span><span class='op'>]</span> <span class='op'>=</span> <span class='nam'>conn</span><span class='op'>[</span><span class='nam'>conn_settings</span><span class='op'>[</span><span class='str'>'name'</span><span class='op'>]</span><span class='op'>]</span><span class='strut'> </span></p>
<p id='t139' class='pln'> <span class='com'># Authenticate if necessary</span><span class='strut'> </span></p>
<p id='t140' class='stm run hide_run'> <span class='key'>if</span> <span class='nam'>conn_settings</span><span class='op'>[</span><span class='str'>'username'</span><span class='op'>]</span> <span class='key'>and</span> <span class='nam'>conn_settings</span><span class='op'>[</span><span class='str'>'password'</span><span class='op'>]</span><span class='op'>:</span><span class='strut'> </span></p>
<p id='t141' class='stm run hide_run'> <span class='nam'>_dbs</span><span class='op'>[</span><span class='nam'>alias</span><span class='op'>]</span><span class='op'>.</span><span class='nam'>authenticate</span><span class='op'>(</span><span class='nam'>conn_settings</span><span class='op'>[</span><span class='str'>'username'</span><span class='op'>]</span><span class='op'>,</span><span class='strut'> </span></p>
<p id='t142' class='pln'> <span class='nam'>conn_settings</span><span class='op'>[</span><span class='str'>'password'</span><span class='op'>]</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t143' class='stm run hide_run'> <span class='key'>return</span> <span class='nam'>_dbs</span><span class='op'>[</span><span class='nam'>alias</span><span class='op'>]</span><span class='strut'> </span></p>
<p id='t144' class='pln'><span class='strut'> </span></p>
<p id='t145' class='pln'><span class='strut'> </span></p>
<p id='t146' class='stm run hide_run'><span class='key'>def</span> <span class='nam'>connect</span><span class='op'>(</span><span class='nam'>db</span><span class='op'>,</span> <span class='nam'>alias</span><span class='op'>=</span><span class='nam'>DEFAULT_CONNECTION_NAME</span><span class='op'>,</span> <span class='op'>**</span><span class='nam'>kwargs</span><span class='op'>)</span><span class='op'>:</span><span class='strut'> </span></p>
<p id='t147' class='pln'> <span class='str'>"""Connect to the database specified by the 'db' argument.</span><span class='strut'> </span></p>
<p id='t148' class='pln'><span class='strut'> </span></p>
<p id='t149' class='pln'><span class='str'> Connection settings may be provided here as well if the database is not</span><span class='strut'> </span></p>
<p id='t150' class='pln'><span class='str'> running on the default port on localhost. If authentication is needed,</span><span class='strut'> </span></p>
<p id='t151' class='pln'><span class='str'> provide username and password arguments as well.</span><span class='strut'> </span></p>
<p id='t152' class='pln'><span class='strut'> </span></p>
<p id='t153' class='pln'><span class='str'> Multiple databases are supported by using aliases. Provide a separate</span><span class='strut'> </span></p>
<p id='t154' class='pln'><span class='str'> `alias` to connect to a different instance of :program:`mongod`.</span><span class='strut'> </span></p>
<p id='t155' class='pln'><span class='strut'> </span></p>
<p id='t156' class='pln'><span class='str'> .. versionchanged:: 0.6 - added multiple database support.</span><span class='strut'> </span></p>
<p id='t157' class='pln'><span class='str'> """</span><span class='strut'> </span></p>
<p id='t158' class='pln'> <span class='key'>global</span> <span class='nam'>_connections</span><span class='strut'> </span></p>
<p id='t159' class='stm run hide_run'> <span class='key'>if</span> <span class='nam'>alias</span> <span class='key'>not</span> <span class='key'>in</span> <span class='nam'>_connections</span><span class='op'>:</span><span class='strut'> </span></p>
<p id='t160' class='stm run hide_run'> <span class='nam'>register_connection</span><span class='op'>(</span><span class='nam'>alias</span><span class='op'>,</span> <span class='nam'>db</span><span class='op'>,</span> <span class='op'>**</span><span class='nam'>kwargs</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t161' class='pln'><span class='strut'> </span></p>
<p id='t162' class='stm run hide_run'> <span class='key'>return</span> <span class='nam'>get_connection</span><span class='op'>(</span><span class='nam'>alias</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t163' class='pln'><span class='strut'> </span></p>
<p id='t164' class='pln'><span class='com'># Support old naming convention</span><span class='strut'> </span></p>
<p id='t165' class='stm run hide_run'><span class='nam'>_get_connection</span> <span class='op'>=</span> <span class='nam'>get_connection</span><span class='strut'> </span></p>
<p id='t166' class='stm run hide_run'><span class='nam'>_get_db</span> <span class='op'>=</span> <span class='nam'>get_db</span><span class='strut'> </span></p>
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