Merge pull request #601 from influxdata/measurement-present

Fix layout being displayed when measurement not present

ui/src/hosts/apis/index.js

@@ -81,3 +81,28 @@ export function getAppsForHosts(proxyLink, hosts, appMappings, telegrafDB) {
     return newHosts;
   });
 }
+
+export function getMeasurementsForHost(source, host) {
+  return proxy({
+    source: source.links.proxy,
+    query: `SHOW MEASUREMENTS WHERE "host" = '${host}'`,
+    db: source.telegraf,
+  }).then(({data}) => {
+    if (_isEmpty(data) || _hasError(data)) {
+      return [];
+    }
+
+    const series = data.results[0].series[0];
+    return series.values.map((measurement) => {
+      return measurement[0];
+    });
+  });
+}
+
+function _isEmpty(resp) {
+  return !resp.results[0].series;
+}
+
+function _hasError(resp) {
+  return !!resp.results[0].error;
+}

ui/src/hosts/containers/HostPage.js

@@ -2,7 +2,7 @@ import React, {PropTypes} from 'react';
 import LayoutRenderer from 'shared/components/LayoutRenderer';
 import TimeRangeDropdown from '../../shared/components/TimeRangeDropdown';
 import timeRanges from 'hson!../../shared/data/timeRanges.hson';
-import {getMappings, getAppsForHosts} from '../apis';
+import {getMappings, getAppsForHosts, getMeasurementsForHost} from 'src/hosts/apis';
 import {fetchLayouts} from 'shared/apis';
 
 export const HostPage = React.createClass({
@@ -33,25 +33,28 @@ export const HostPage = React.createClass({
   },
 
   componentDidMount() {
-    const hosts = {[this.props.params.hostID]: {name: this.props.params.hostID}};
-    const {source} = this.props;
+    const {source, params} = this.props;
+    const hosts = {[params.hostID]: {name: params.hostID}};
 
     // fetching layouts and mappings can be done at the same time
     fetchLayouts().then(({data: {layouts}}) => {
       getMappings().then(({data: {mappings}}) => {
         getAppsForHosts(source.links.proxy, hosts, mappings, source.telegraf).then((newHosts) => {
+          getMeasurementsForHost(source, params.hostID).then((measurements) => {
             const host = newHosts[this.props.params.hostID];
             const filteredLayouts = layouts.filter((layout) => {
               const focusedApp = this.props.location.query.app;
               if (focusedApp) {
                 return layout.app === focusedApp;
               }
-            return host.apps && host.apps.includes(layout.app);
+
+              return host.apps && host.apps.includes(layout.app) && measurements.includes(layout.measurement);
             });
             this.setState({layouts: filteredLayouts});
           });
         });
       });
+    });
   },
 
   handleChooseTimeRange({lower}) {