Add Ability To Separate Frontend / Adminhtml in New Relic

app/code/Magento/NewRelicReporting/Model/Config.php

@@ -161,6 +161,16 @@ public function getNewRelicAppName()
         return (string)$this->scopeConfig->getValue('newrelicreporting/general/app_name');
     }
 
+    /**
+     * Returns configured separate apps value
+     *
+     * @return bool
+     */
+    public function isSeparateApps()
+    {
+        return (bool)$this->scopeConfig->getValue('newrelicreporting/general/separate_apps');
+    }
+
     /**
      * Returns config setting for overall cron to be enabled
      *

app/code/Magento/NewRelicReporting/Model/NewRelicWrapper.php

@@ -41,6 +41,19 @@ public function reportError($exception)
         }
     }
 
+    /**
+     * Wrapper for 'newrelic_set_appname'
+     *
+     * @param string $appName
+     * @return void
+     */
+    public function setAppName(string $appName)
+    {
+        if (extension_loaded('newrelic')) {
+            newrelic_set_appname($appName);
+        }
+    }
+
     /**
      * Checks whether newrelic-php5 agent is installed
      *

app/code/Magento/NewRelicReporting/Plugin/StatePlugin.php

@@ -0,0 +1,92 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\NewRelicReporting\Plugin;
+
+use Magento\Framework\App\State;
+use Magento\Framework\Exception\LocalizedException;
+use Magento\NewRelicReporting\Model\Config;
+use Magento\NewRelicReporting\Model\NewRelicWrapper;
+use Psr\Log\LoggerInterface;
+
+class StatePlugin
+{
+    /**
+     * @var Config
+     */
+    private $config;
+
+    /**
+     * @var NewRelicWrapper
+     */
+    private $newRelicWrapper;
+
+    /**
+     * @var LoggerInterface
+     */
+    private $logger;
+
+    /**
+     * @param Config $config
+     * @param NewRelicWrapper $newRelicWrapper
+     */
+    public function __construct(
+        Config $config,
+        NewRelicWrapper $newRelicWrapper,
+        LoggerInterface $logger
+    ) {
+        $this->config = $config;
+        $this->newRelicWrapper = $newRelicWrapper;
+        $this->logger = $logger;
+    }
+
+    /**
+     * Set separate appname
+     *
+     * @param State $subject
+     * @param null $result
+     * @return void
+     *
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
+     */
+    public function afterSetAreaCode(State $state, $result)
+    {
+        if (!$this->shouldSetAppName()) {
+            return $result;
+        }
+
+        try {
+            $this->newRelicWrapper->setAppName($this->appName($state));
+        } catch (LocalizedException $e) {
+            $this->logger->critical($e);
+            return $result;
+        }
+    }
+
+    private function appName(State $state)
+    {
+        $code = $state->getAreaCode();
+        $current = $this->config->getNewRelicAppName();
+
+        return $current . ';' . $current . '_' . $code;
+    }
+
+    private function shouldSetAppName()
+    {
+        if (!$this->config->isNewRelicEnabled()) {
+            return false;
+        }
+
+        if (!$this->config->getNewRelicAppName()) {
+            return false;
+        }
+
+        if (!$this->config->isSeparateApps()) {
+            return false;
+        }
+
+        return true;
+    }
+}

app/code/Magento/NewRelicReporting/etc/adminhtml/system.xml

@@ -46,6 +46,11 @@
                     <label>New Relic Application Name</label>
                     <comment>This is located by navigating to Settings from the New Relic APM website</comment>
                 </field>
+                <field id="separate_apps" translate="label comment" type="select" sortOrder="9" showInDefault="1" showInWebsite="1" showInStore="1">
+                    <label>Send Adminhtml and Frontend as Separate Apps</label>
+                    <source_model>Magento\Config\Model\Config\Source\Yesno</source_model>
+                    <comment>In addition to the main app (which includes all PHP execution), separate apps for adminhtml and frontend will be created. Requires New Relic Application Name to be set.</comment>
+                </field>
             </group>
             <group id="cron" translate="label" type="text" sortOrder="2" showInDefault="1" showInWebsite="1" showInStore="1">
                 <label>Cron</label>

app/code/Magento/NewRelicReporting/etc/di.xml

@@ -30,6 +30,9 @@
     <type name="Magento\Framework\App\Http">
         <plugin name="framework-http-newrelic" type="Magento\NewRelicReporting\Plugin\HttpPlugin"/>
     </type>
+    <type name="Magento\Framework\App\State">
+        <plugin name="framework-state-newrelic" type="Magento\NewRelicReporting\Plugin\StatePlugin"/>
+    </type>
     <type name="Magento\Framework\Console\CommandListInterface">
         <arguments>
             <argument name="commands" xsi:type="array">

app/code/Magento/NewRelicReporting/i18n/en_US.csv

@@ -21,3 +21,5 @@ General,General
 "This is located by navigating to Settings from the New Relic APM website","This is located by navigating to Settings from the New Relic APM website"
 Cron,Cron
 "Enable Cron","Enable Cron"
+"Send Adminhtml and Frontend as Separate Apps","Send Adminhtml and Frontend as Separate Apps"
+"In addition to the main app (which includes all PHP execution), separate apps for adminhtml and frontend will be created. Requires New Relic Application Name to be set.","In addition to the main app (which includes all PHP execution), separate apps for adminhtml and frontend will be created. Requires New Relic Application Name to be set."

dev/tests/integration/testsuite/Magento/NewRelicReporting/Plugin/SeparateAppsTest.php

@@ -0,0 +1,47 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\NewRelicReporting\Plugin;
+
+use Magento\Framework\App\State;
+use Magento\NewRelicReporting\Model\NewRelicWrapper;
+use Magento\TestFramework\ObjectManager;
+use Magento\TestFramework\Helper\Bootstrap;
+
+class SeparateAppsTest extends \PHPUnit\Framework\TestCase
+{
+    /**
+     * @var ObjectManager
+     */
+    private $objectManager;
+
+    protected function setUp()
+    {
+        $this->objectManager = Bootstrap::getObjectManager();
+    }
+
+    /**
+     * @magentoConfigFixture default/newrelicreporting/general/enable 1
+     * @magentoConfigFixture default/newrelicreporting/general/app_name beverly_hills
+     * @magentoConfigFixture default/newrelicreporting/general/separate_apps 1
+     */
+    public function testAppNameIsSetWhenConfiguredCorrectly()
+    {
+        $newRelicWrapper = $this->getMockBuilder(NewRelicWrapper::class)
+            ->setMethods(['setAppName'])
+            ->getMock();
+
+        $this->objectManager->configure([NewRelicWrapper::class => ['shared' => true]]);
+        $this->objectManager->addSharedInstance($newRelicWrapper, NewRelicWrapper::class);
+
+        $newRelicWrapper->expects($this->once())
+            ->method('setAppName')
+            ->with($this->equalTo('beverly_hills;beverly_hills_90210'));
+
+        $state = $this->objectManager->get(State::class);
+
+        $state->setAreaCode('90210');
+    }
+}