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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <language>en-us</language>    <build-info>
        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-49172] Create MigratingTenantAccessBlockerByPrefix class and expose it through serverStatus</title>
                <link>https://jira.mongodb.org/browse/SERVER-49172</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;This ticket has two parts:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;Create a new MigratingTenantAccessBlockerByPrefix class that is a decoration on ServiceContext (see &lt;a href=&quot;https://github.com/mongodb/mongo/blob/4eacc5768f3967882fe5edeeb7ec2739bb95a1a8/src/mongo/db/s/collection_sharding_state.cpp#L112-L114&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;example&lt;/a&gt;). The class should go in a new migrating_tenant_access_blocker_by_prefix{.h, .cpp} file and be linked in to the &lt;a href=&quot;https://github.com/mongodb/mongo/blob/4eacc5768f3967882fe5edeeb7ec2739bb95a1a8/src/mongo/db/repl/SConscript#L1180&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;serveronly_repl library&lt;/a&gt;. The class should contain a&#160;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/4eacc5768f3967882fe5edeeb7ec2739bb95a1a8/src/mongo/util/string_map.h&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;StringMap&lt;/a&gt; from database prefix to shared_ptr&amp;lt;MigratingTenantAccessBlocker&amp;gt; and have a member mutex to synchronize access to the StringMap (see&#160;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/4eacc5768f3967882fe5edeeb7ec2739bb95a1a8/src/mongo/db/s/collection_sharding_state.cpp#L104-L109&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;example&lt;/a&gt;). The class should have the following methods:
	&lt;ul&gt;
		&lt;li&gt;add(StringData dbPrefix, shared_ptr&amp;lt;MigratingTenantAccessBlocker&amp;gt; mtab)&lt;/li&gt;
		&lt;li&gt;remove(StringData dbPrefix)&lt;/li&gt;
		&lt;li&gt;shared_ptr&amp;lt;MigratingTenantAccessBlocker&amp;gt; get(StringData dbName)&lt;/li&gt;
		&lt;li&gt;void appendInfoForServerStatus(BSONObjBuilder* builder).&lt;/li&gt;
	&lt;/ul&gt;
	&lt;/li&gt;
	&lt;li&gt;Add a ServerStatusSection for the MigratingTenantAccessBlockerByPrefix class in a new migrating_tenant_access_blocker_server_status_section.cpp file that is linked in to the serveronly_repl library. The ServerStatusSection::generateSection should call MigratingTenantAccessBlockerByPrefix::appendInfoForServerStatus (see&#160;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/4eacc5768f3967882fe5edeeb7ec2739bb95a1a8/src/mongo/db/s/sharding_server_status.cpp#L92-L120&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;example&lt;/a&gt;). The actual serverStatus output may change a bit, but for now let&apos;s just expose the state in each MigratingTenantAccessBlocker by adding a MigratingTenantAccessBlocker::appendInfoForServerStatus that appends the &apos;_access&apos; variable, _blockTimestamp (if set) and _commitOrAbortOpTime (if set).&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Manually test that the info about MigratingTenantAccessBlockerByPrefix appears in serverStatus output. You can do this by calling MigratingTenantAccessBlockerByPrefix::add somewhere in mongod startup, e.g. &lt;a href=&quot;https://github.com/mongodb/mongo/blob/4eacc5768f3967882fe5edeeb7ec2739bb95a1a8/src/mongo/db/mongod_main.cpp#L765&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;</description>
                <environment></environment>
        <key id="1394858">SERVER-49172</key>
            <summary>Create MigratingTenantAccessBlockerByPrefix class and expose it through serverStatus</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="6" iconUrl="https://jira.mongodb.org/images/icons/statuses/closed.png" description="The issue is considered finished, the resolution is correct. Issues which are closed can be reopened.">Closed</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="13201">Fixed</resolution>
                                        <assignee username="luis.osta@mongodb.com">Luis Osta</assignee>
                                    <reporter username="esha.maharishi@mongodb.com">Esha Maharishi</reporter>
                        <labels>
                            <label>pm-1791_milestone-A</label>
                    </labels>
                <created>Mon, 29 Jun 2020 20:30:52 +0000</created>
                <updated>Sun, 29 Oct 2023 22:06:21 +0000</updated>
                            <resolved>Wed, 8 Jul 2020 15:37:47 +0000</resolved>
                                                    <fixVersion>4.7.0</fixVersion>
                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="3275334" author="xgen-internal-githook" created="Wed, 8 Jul 2020 17:23:45 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Luis Osta&apos;, &apos;email&apos;: &apos;luis.osta@mongodb.com&apos;, &apos;username&apos;: &apos;LuisOsta&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-49172&quot; title=&quot;Create MigratingTenantAccessBlockerByPrefix class and expose it through serverStatus&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-49172&quot;&gt;&lt;del&gt;SERVER-49172&lt;/del&gt;&lt;/a&gt; Create MigratingTenantAccessBlockerByPrefix class and expose it through serverStatus&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/0b1eab6caebf276b9d73ea7126b74efab813fc51&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/0b1eab6caebf276b9d73ea7126b74efab813fc51&lt;/a&gt;&lt;/p&gt;</comment>
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