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    <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-62524] Represent FCV values meaningfully to remove dependency of utility functions on template file</title>
                <link>https://jira.mongodb.org/browse/SERVER-62524</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently, the &lt;tt&gt;releases.h.tpl&lt;/tt&gt; template file which uses Cheetah to generate FCV enums also generates a few utility functions, such as the function to &lt;a href=&quot;https://github.com/mongodb/mongo/blob/89bc7e2241fd1e2fcd34f7226a5d5f50b543d33f/src/mongo/util/version/releases.h.tpl#L230-L232&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;convert the enums to strings (&lt;tt&gt;multiversion::toString&lt;/tt&gt;)&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;However, when future utility functions need to be added, say to get an FCV&apos;s major number (as in &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-58534&quot; title=&quot;Collect FCV in FTDC&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-58534&quot;&gt;&lt;del&gt;SERVER-58534&lt;/del&gt;&lt;/a&gt;), or perhaps stringify the FCV in some other way, we will be forced to generate the new utility functions via the template file.&lt;/p&gt;

&lt;p&gt;Consequently, the template file will become big and it will be hard for future implementers since understanding Cheetah is required.&lt;/p&gt;

&lt;p&gt;We can de-couple utility functions from the template file by creating a new FCV class to represent an FCV (containing &lt;tt&gt;majorVersion&lt;/tt&gt;, &lt;tt&gt;minorVersion&lt;/tt&gt;, &lt;tt&gt;isTransition&lt;/tt&gt;, etc. as the attributes), and having the template file generate only a function to convert from FCV enums to an object of the FCV class.&lt;/p&gt;

&lt;p&gt;Then, utility functions can live elsewhere in CPP code and can perform all their operations on an FCV class object. For example, &lt;tt&gt;toString&lt;/tt&gt; would peek at the object and appropriately stringify it based on the attributes.&lt;/p&gt;

&lt;p&gt;This ticket is to track that work.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1962104">SERVER-62524</key>
            <summary>Represent FCV values meaningfully to remove dependency of utility functions on template file</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="1" iconUrl="https://jira.mongodb.org/images/icons/statuses/open.png" description="">Open</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="backlog-server-repl">Backlog - Replication Team</assignee>
                                    <reporter username="vishnu.kaushik@mongodb.com">Vishnu Kaushik</reporter>
                        <labels>
                            <label>former-quick-wins</label>
                            <label>pm-2821-quick-wins</label>
                            <label>tech-debt-repl</label>
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                <created>Tue, 11 Jan 2022 20:04:13 +0000</created>
                <updated>Thu, 4 May 2023 15:35:49 +0000</updated>
                                                                                                <votes>0</votes>
                                    <watches>6</watches>
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                            <comment id="4286730" author="vishnu.kaushik" created="Tue, 11 Jan 2022 20:06:23 +0000"  >&lt;p&gt;CC: &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=xuerui.fa&quot; class=&quot;user-hover&quot; rel=&quot;xuerui.fa&quot;&gt;xuerui.fa&lt;/a&gt;&lt;/p&gt;</comment>
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