[ML] Adding jobs stats bar to top of jobs list (#20527)

* [ML] Adding jobs stats bar to top of jobs list

* unsetting update function

* changing node variable name

* small refactor

* using props copy of `updateJobStats`

* adding proptypes

* adding fixed height

x-pack/plugins/ml/public/jobs/jobs_list_new/components/jobs_list_view/jobs_list_view.js

@@ -18,6 +18,7 @@ import { DeleteJobModal } from '../delete_job_modal';
 import { StartDatafeedModal } from '../start_datafeed_modal';
 import { MultiJobActions } from '../multi_job_actions';
 
+import PropTypes from 'prop-types';
 import React, {
   Component
 } from 'react';
@@ -35,7 +36,7 @@ export class JobsListView extends Component {
       fullJobsList: {},
       selectedJobs: [],
       itemIdToExpandedRowMap: {},
-      filterClauses: []
+      filterClauses: [],
     };
 
     this.updateFunctions = {};
@@ -227,6 +228,7 @@ export class JobsListView extends Component {
           const filteredJobsSummaryList = filterJobs(jobsSummaryList, this.state.filterClauses);
           this.setState({ jobsSummaryList, filteredJobsSummaryList, fullJobsList }, () => {
             this.refreshSelectedJobs();
+            this.props.updateJobStats(jobsSummaryList);
           });
 
           Object.keys(this.updateFunctions).forEach((j) => {
@@ -281,3 +283,6 @@ export class JobsListView extends Component {
     );
   }
 }
+JobsListView.propTypes = {
+  updateJobStats: PropTypes.func.isRequired,
+};

x-pack/plugins/ml/public/jobs/jobs_list_new/components/jobs_stats_bar/index.js

@@ -0,0 +1,8 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+
+
+export { JobStatsBar } from './jobs_stats_bar';

x-pack/plugins/ml/public/jobs/jobs_list_new/components/jobs_stats_bar/jobs_stats_bar.js

@@ -0,0 +1,121 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+
+
+import './styles/main.less';
+import { JOB_STATE, DATAFEED_STATE } from 'plugins/ml/../common/constants/states';
+
+import PropTypes from 'prop-types';
+import React, {
+  Component,
+} from 'react';
+
+function createJobStats(jobsSummaryList) {
+
+  const jobStats = {
+    activeNodes: { label: 'Active ML Nodes', value: 0, show: true },
+    total: { label: 'Total jobs', value: 0, show: true },
+    open: { label: 'Open jobs', value: 0, show: true },
+    closed: { label: 'Closed jobs', value: 0, show: true },
+    failed: { label: 'Failed jobs', value: 0, show: false },
+    activeDatafeeds: { label: 'Active datafeeds', value: 0, show: true }
+  };
+
+  if (jobsSummaryList === undefined) {
+    return jobStats;
+  }
+
+  // object to keep track of nodes being used by jobs
+  const mlNodes = {};
+  let failedJobs = 0;
+
+  jobsSummaryList.forEach((job) => {
+    if (job.jobState === JOB_STATE.OPENED) {
+      jobStats.open.value++;
+    } else if (job.jobState === JOB_STATE.CLOSED) {
+      jobStats.closed.value++;
+    } else if (job.jobState === JOB_STATE.FAILED) {
+      failedJobs++;
+    }
+
+    if (job.hasDatafeed && job.datafeedState === DATAFEED_STATE.STARTED) {
+      jobStats.activeDatafeeds.value++;
+    }
+
+    if (job.nodeName !== undefined) {
+      mlNodes[job.nodeName] = {};
+    }
+  });
+
+  jobStats.total.value = jobsSummaryList.length;
+
+  // // Only show failed jobs if it is non-zero
+  if (failedJobs) {
+    jobStats.failed.value = failedJobs;
+    jobStats.failed.show = true;
+  } else {
+    jobStats.failed.show = false;
+  }
+
+  jobStats.activeNodes.value = Object.keys(mlNodes).length;
+
+  return jobStats;
+}
+
+function Stat({ stat }) {
+  return (
+    <span className="stat">
+      <span className="stat-label">{stat.label}</span>: <span className="stat-value">{stat.value}</span>
+    </span>
+  );
+}
+Stat.propTypes = {
+  stat: PropTypes.object.isRequired,
+};
+
+export class JobStatsBar extends Component {
+  constructor(props) {
+    super(props);
+    this.state = {
+      jobsSummaryList: [],
+      jobStats: {},
+    };
+  }
+
+  updateJobStats = (jobsSummaryList) => {
+    const jobStats = createJobStats(jobsSummaryList);
+    this.setState({
+      jobsSummaryList,
+      jobStats,
+    });
+  };
+
+  componentDidMount() {
+    this.props.setUpdateJobStats(this.updateJobStats);
+  }
+
+  componentWillUnmount() {
+    this.props.unsetUpdateJobStats();
+  }
+
+  render() {
+    const { jobStats } = this.state;
+    const stats = Object.keys(jobStats).map(k => jobStats[k]);
+
+    return (
+      <div className="jobs-stats-bar-new">
+        {
+          stats.filter(s => (s.show)).map(s => <Stat key={s.label} stat={s} />)
+        }
+      </div>
+    );
+  }
+}
+JobStatsBar.propTypes = {
+  setUpdateJobStats: PropTypes.func.isRequired,
+  unsetUpdateJobStats: PropTypes.func.isRequired,
+};
+

x-pack/plugins/ml/public/jobs/jobs_list_new/components/jobs_stats_bar/styles/main.less

@@ -0,0 +1,14 @@
+.jobs-stats-bar-new {
+
+  height: 42px;
+  padding: 14px;
+  background-color: #EFF0F1;
+
+  .stat {
+    margin-right: 10px;
+    .stat-label {}
+    .stat-value {
+      font-weight: bold
+    }
+  }
+}

x-pack/plugins/ml/public/jobs/jobs_list_new/components/node_available_warning/index.js

@@ -0,0 +1,8 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+
+
+export { NodeAvailableWarning } from './node_available_warning';

x-pack/plugins/ml/public/jobs/jobs_list_new/components/node_available_warning/node_available_warning.js

@@ -0,0 +1,44 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+
+
+import { mlNodesAvailable, permissionToViewMlNodeCount } from 'plugins/ml/ml_nodes_check/check_ml_nodes';
+
+import React from 'react';
+
+import {
+  EuiCallOut,
+  EuiLink,
+  EuiSpacer,
+} from '@elastic/eui';
+
+export function NodeAvailableWarning() {
+  const isCloud = false; // placeholder for future specific cloud functionality
+  if ((mlNodesAvailable() === true) || (permissionToViewMlNodeCount() === false)) {
+    return (<span />);
+  } else {
+    return (
+      <React.Fragment>
+        <EuiCallOut
+          title="No ML nodes available"
+          color="warning"
+          iconType="alert"
+        >
+          <p>
+            There are no ML nodes available.<br />
+            You will not be able to create or run jobs.
+            {isCloud &&
+              <span ng-if="isCloud">
+                &nbsp;This can be configured in Cloud <EuiLink href="#">here</EuiLink>.
+              </span>
+            }
+          </p>
+        </EuiCallOut>
+        <EuiSpacer size="m" />
+      </React.Fragment>
+    );
+  }
+}

x-pack/plugins/ml/public/jobs/jobs_list_new/jobs.js

@@ -8,69 +8,57 @@
 import './styles/main.less';
 import { NewJobButton } from './components/new_job_button';
 import { JobsListView } from './components/jobs_list_view';
-import { mlNodesAvailable, permissionToViewMlNodeCount } from 'plugins/ml/ml_nodes_check/check_ml_nodes';
+import { JobStatsBar } from './components/jobs_stats_bar';
+import { NodeAvailableWarning } from './components/node_available_warning';
 
 import React, {
   Component
 } from 'react';
 
 import {
-  EuiCallOut,
-  EuiLink,
   EuiSpacer,
 } from '@elastic/eui';
 
-function NodeAvailableWarning() {
-  const isCloud = false; // placeholder for future specific cloud functionality
-  if ((mlNodesAvailable() === true) || (permissionToViewMlNodeCount() === false)) {
-    return (<span />);
-  } else {
-    return (
-      <React.Fragment>
-        <EuiCallOut
-          title="No ML nodes available"
-          color="warning"
-          iconType="alert"
-        >
-          <p>
-            There are no ML nodes available.<br />
-            You will not be able to create or run jobs.
-            {isCloud &&
-              <span ng-if="isCloud">
-                &nbsp;This can be configured in Cloud <EuiLink href="#">here</EuiLink>.
-              </span>
-            }
-          </p>
-        </EuiCallOut>
-        <EuiSpacer size="m" />
-      </React.Fragment>
-    );
-  }
-}
 
 export class JobsPage extends Component {
   constructor(props) {
     super(props);
     this.state = {
+      jobsSummaryList: [],
+      updateJobStats: () => {},
     };
   }
 
+  setUpdateJobStats = (updateJobStats) => {
+    this.setState({ updateJobStats });
+  }
+
+  unsetUpdateJobStats = () => {
+    this.setUpdateJobStats(() => {});
+  }
+
   render() {
     return (
-      <div className="job-management">
-        <NodeAvailableWarning />
-        <header>
-          <div className="new-job-button-container">
-            <NewJobButton />
-          </div>
-        </header>
+      <React.Fragment>
+        <JobStatsBar
+          setUpdateJobStats={this.setUpdateJobStats}
+          unsetUpdateJobStats={this.unsetUpdateJobStats}
+        />
+        <div className="job-management">
+          <NodeAvailableWarning />
+          <header>
+            <div className="new-job-button-container">
+              <NewJobButton />
+            </div>
+          </header>
 
-        <div className="clear" />
+          <div className="clear" />
 
-        <EuiSpacer size="s" />
+          <EuiSpacer size="s" />
 
-        <JobsListView />
-      </div>
+          <JobsListView updateJobStats={this.state.updateJobStats} />
+        </div>
+      </React.Fragment>
     );
   }
 }

x-pack/plugins/ml/server/models/job_service/jobs.js

@@ -73,6 +73,7 @@ export function jobsProvider(callWithRequest) {
         datafeedState: (hasDatafeed && job.datafeed_config.state) ? job.datafeed_config.state : '',
         latestTimeStamp,
         earliestTimeStamp,
+        nodeName: (job.node) ? job.node.name : undefined,
       };
       if (jobIds.find(j => (j === tempJob.id))) {
         tempJob.fullJob = job;