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    <p>Many of the shell's helper functions are not available for server-side code execution. In the case of <code>printShardingStatus()</code>, it makes sense because there isn't a console to use for printing output and you'd rather have a string returned. Thankfully, you should be able to pull up the source of the shell function and reimplement it in your application (e.g. concatenating a returned string instead of printing directly).</p> <pre><code>$ mongo MongoDB shell version: 2.2.0 connecting to: test &gt; db.printShardingStatus function (verbose) { printShardingStatus(this.getSiblingDB("config"), verbose); } </code></pre> <p>So, let's look at the <code>printShardingStatus()</code> function...</p> <pre><code>&gt; printShardingStatus function (configDB, verbose) { if (configDB === undefined) { configDB = db.getSisterDB("config"); } var version = configDB.getCollection("version").findOne(); // ... } </code></pre> <p>Before turning all of the output statements into string concatenation, you'd want to make sure the other DB methods are all available to you. Performance-wise, I think the best option is to port the innards of this function to Java and avoid server-side JS evaluation altogether. If you dive deeper into the <code>printShardingStatus()</code> function, you'll see it's just issuing <code>find()</code> on the config database along with some <code>group()</code> queries.</p> <p>If you do want to stick with evaluating JS and would rather not keep this code within your Java application, you can also look into <a href="http://www.mongodb.org/display/DOCS/Server-side+Code+Execution#Server-sideCodeExecution-Storingfunctionsserverside" rel="noreferrer">storing JS functions server-side</a>.</p>
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    1. POMongodb: db.printShardingStatus() / sh.status() call in Java (and JavaScript)
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    1. USjmikola
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    1. COPerfect! It works with DB.getCollection() methods run on config DB. Thanks for showing the way!
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      1. USPaweł Skorupiński
 

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