PLT-4357 adding performance monitoring (#4622)

* WIP

* WIP

* Adding metrics collection

* updating vendor packages

* Adding metrics to config

* Adding admin console page for perf monitoring

* Updating glide

* switching to tylerb/graceful

webapp/components/admin_console/admin_sidebar.jsx

@@ -192,6 +192,7 @@ export default class AdminSidebar extends React.Component {
         let ldapSettings = null;
         let samlSettings = null;
         let clusterSettings = null;
+        let metricsSettings = null;
         let complianceSettings = null;
 
         let license = null;
@@ -241,6 +242,20 @@ export default class AdminSidebar extends React.Component {
                 );
             }
 
+            if (global.window.mm_license.Metrics === 'true') {
+                metricsSettings = (
+                    <AdminSidebarSection
+                        name='metrics'
+                        title={
+                            <FormattedMessage
+                                id='admin.sidebar.metrics'
+                                defaultMessage='Performance Monitoring (Beta)'
+                            />
+                        }
+                    />
+                );
+            }
+
             if (global.window.mm_license.SAML === 'true') {
                 samlSettings = (
                     <AdminSidebarSection
@@ -716,6 +731,7 @@ export default class AdminSidebar extends React.Component {
                                     }
                                 />
                                 {clusterSettings}
+                                {metricsSettings}
                             </AdminSidebarSection>
                         </AdminSidebarCategory>
                         {this.renderTeams()}

webapp/components/admin_console/metrics_settings.jsx

@@ -0,0 +1,96 @@
+// Copyright (c) 2016 Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+import React from 'react';
+
+import AdminSettings from './admin_settings.jsx';
+import BooleanSetting from './boolean_setting.jsx';
+import TextSetting from './text_setting.jsx';
+
+import {FormattedMessage, FormattedHTMLMessage} from 'react-intl';
+import SettingsGroup from './settings_group.jsx';
+
+import * as Utils from 'utils/utils.jsx';
+
+export default class MetricsSettings extends AdminSettings {
+    constructor(props) {
+        super(props);
+
+        this.getConfigFromState = this.getConfigFromState.bind(this);
+        this.renderSettings = this.renderSettings.bind(this);
+    }
+
+    getConfigFromState(config) {
+        config.MetricsSettings.Enable = this.state.enable;
+        config.MetricsSettings.ListenAddress = this.state.listenAddress;
+
+        return config;
+    }
+
+    getStateFromConfig(config) {
+        const settings = config.MetricsSettings;
+
+        return {
+            enable: settings.Enable,
+            listenAddress: settings.ListenAddress
+        };
+    }
+
+    renderTitle() {
+        return (
+            <h3>
+                <FormattedMessage
+                    id='admin.advance.metrics'
+                    defaultMessage='Performance Monitoring (Beta)'
+                />
+            </h3>
+        );
+    }
+
+    renderSettings() {
+        const licenseEnabled = global.window.mm_license.IsLicensed === 'true' && global.window.mm_license.Metrics === 'true';
+        if (!licenseEnabled) {
+            return null;
+        }
+
+        return (
+            <SettingsGroup>
+                <BooleanSetting
+                    id='enable'
+                    label={
+                        <FormattedMessage
+                            id='admin.metrics.enableTitle'
+                            defaultMessage='Enable Performance Monitoring:'
+                        />
+                    }
+                    helpText={
+                        <FormattedHTMLMessage
+                            id='admin.metrics.enableDescription'
+                            defaultMessage='When true, Mattermost will enable performance monitoring collection and profiling. Please see <a href="http://docs.mattermost.com/deployment/metrics.html" target="_blank">documentation</a> to learn more about configuring performance monitoring for Mattermost.'
+                        />
+                    }
+                    value={this.state.enable}
+                    onChange={this.handleChange}
+                />
+                <TextSetting
+                    id='listenAddress'
+                    label={
+                        <FormattedMessage
+                            id='admin.metrics.listenAddressTitle'
+                            defaultMessage='Listen Address:'
+                        />
+                    }
+                    placeholder={Utils.localizeMessage('admin.metrics.listenAddressEx', 'Ex ":8067"')}
+                    helpText={
+                        <FormattedMessage
+                            id='admin.metrics.listenAddressDesc'
+                            defaultMessage='The address the server will listen on to expose performance metrics.'
+                        />
+                    }
+                    value={this.state.listenAddress}
+                    onChange={this.handleChange}
+                />
+            </SettingsGroup>
+        );
+    }
+}