[ 
https://issues.apache.org/jira/browse/BEAM-10545?focusedWorklogId=480374&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-480374
 ]

ASF GitHub Bot logged work on BEAM-10545:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 08/Sep/20 19:01
            Start Date: 08/Sep/20 19:01
    Worklog Time Spent: 10m 
      Work Description: prodonjs commented on a change in pull request #12770:
URL: https://github.com/apache/beam/pull/12770#discussion_r485129135



##########
File path: 
sdks/python/apache_beam/runners/interactive/extensions/apache-beam-jupyterlab-sidepanel/src/SidePanel.ts
##########
@@ -0,0 +1,120 @@
+// Licensed under the Apache License, Version 2.0 (the 'License'); you may not
+// use this file except in compliance with the License. You may obtain a copy 
of
+// the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an 'AS IS' BASIS, WITHOUT
+// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+// License for the specific language governing permissions and limitations 
under
+// the License.
+
+import {
+  SessionContext,
+  ISessionContext,
+  sessionContextDialogs
+} from '@jupyterlab/apputils';
+import { IRenderMimeRegistry } from '@jupyterlab/rendermime';
+import { ServiceManager } from '@jupyterlab/services';
+import { Message } from '@lumino/messaging';
+import { BoxPanel } from '@lumino/widgets';
+
+// prettier-ignore
+import {
+  InteractiveInspectorWidget
+} from './inspector/InteractiveInspectorWidget';
+
+/**
+ * The side panel: main user interface of the extension.
+ *
+ * Multiple instances of the side panel can be opened at the same time. They
+ * can be operated independently but sharing the same kernel state if connected
+ * to the same notebook session model or running kernel instance.
+ */
+export class SidePanel extends BoxPanel {
+  constructor(
+    manager: ServiceManager.IManager,
+    rendermime: IRenderMimeRegistry
+  ) {
+    super({
+      direction: 'top-to-bottom',
+      alignment: 'end'
+    });
+    this.id = 'apache-beam-jupyterlab-sidepanel';
+    this.title.label = 'Interactive Beam Inspector';
+    this.title.closable = true;
+
+    this._sessionContext = new SessionContext({
+      sessionManager: manager.sessions,
+      specsManager: manager.kernelspecs,
+      name: 'Interactive Beam Inspector Session'
+    });
+
+    this._inspector = new InteractiveInspectorWidget(this._sessionContext);
+    this.addWidget(this._inspector);
+
+    void this._sessionContext

Review comment:
       I would suggest moving this out to a private `async` method for 
readability. Since you're already using async/await in the `then` handler, it 
seems like it would be most consistent to use it throughout rather than 
chaining with `then` and `catch`.

##########
File path: 
sdks/python/apache_beam/runners/interactive/extensions/apache-beam-jupyterlab-sidepanel/style/mdc-theme.css
##########
@@ -0,0 +1,43 @@
+/*
+ * Licensed under the Apache License, Version 2.0 (the 'License'); you may not
+ * use this file except in compliance with the License. You may obtain a copy 
of
+ * the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an 'AS IS' BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations 
under
+ * the License.
+ */
+
+/*
+ * Theme configured from https://rmwc.io/.
+ */
+:root {
+  --mdc-theme-primary: #1a73e8;

Review comment:
       We ran into this issue with some of our extensions this summer and found 
that it was best if we referenced JupyterLab's CSS variables for colors where 
possible so we would be able to support users with different JupyterLab themes.
   
   - https://jupyterlab.readthedocs.io/en/stable/developer/css.html
   - 
https://github.com/jupyterlab/jupyterlab/blob/master/packages/theme-light-extension/style/variables.css

##########
File path: 
sdks/python/apache_beam/runners/interactive/extensions/apache-beam-jupyterlab-sidepanel/src/SidePanel.ts
##########
@@ -0,0 +1,120 @@
+// Licensed under the Apache License, Version 2.0 (the 'License'); you may not
+// use this file except in compliance with the License. You may obtain a copy 
of
+// the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an 'AS IS' BASIS, WITHOUT
+// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+// License for the specific language governing permissions and limitations 
under
+// the License.
+
+import {
+  SessionContext,
+  ISessionContext,
+  sessionContextDialogs
+} from '@jupyterlab/apputils';
+import { IRenderMimeRegistry } from '@jupyterlab/rendermime';
+import { ServiceManager } from '@jupyterlab/services';
+import { Message } from '@lumino/messaging';
+import { BoxPanel } from '@lumino/widgets';
+
+// prettier-ignore
+import {
+  InteractiveInspectorWidget
+} from './inspector/InteractiveInspectorWidget';
+
+/**
+ * The side panel: main user interface of the extension.
+ *
+ * Multiple instances of the side panel can be opened at the same time. They
+ * can be operated independently but sharing the same kernel state if connected
+ * to the same notebook session model or running kernel instance.
+ */
+export class SidePanel extends BoxPanel {
+  constructor(
+    manager: ServiceManager.IManager,
+    rendermime: IRenderMimeRegistry
+  ) {
+    super({
+      direction: 'top-to-bottom',
+      alignment: 'end'
+    });
+    this.id = 'apache-beam-jupyterlab-sidepanel';
+    this.title.label = 'Interactive Beam Inspector';
+    this.title.closable = true;
+
+    this._sessionContext = new SessionContext({
+      sessionManager: manager.sessions,
+      specsManager: manager.kernelspecs,
+      name: 'Interactive Beam Inspector Session'
+    });
+
+    this._inspector = new InteractiveInspectorWidget(this._sessionContext);
+    this.addWidget(this._inspector);
+
+    void this._sessionContext
+      .initialize()
+      .then(async value => {
+        if (value) {

Review comment:
       If there is no handling if value is falsy, I would suggest `if (!value) 
return;` to eliminate a layer of nesting.




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Issue Time Tracking
-------------------

    Worklog Id:     (was: 480374)
    Time Spent: 12h 10m  (was: 12h)

> Apache Beam JupyterLab SidePanel
> --------------------------------
>
>                 Key: BEAM-10545
>                 URL: https://issues.apache.org/jira/browse/BEAM-10545
>             Project: Beam
>          Issue Type: New Feature
>          Components: runner-py-interactive
>            Reporter: Ning Kang
>            Assignee: Ning Kang
>            Priority: P2
>          Time Spent: 12h 10m
>  Remaining Estimate: 0h
>
> Create a JupyterLab extension to provide information and controls 
> interactively when running Apache Beam notebooks in JupyterLab.
> Design 
> [doc|https://docs.google.com/document/d/1aKK8TzSrl8WiG0K4v9xZEfLMCinuGqRlMOyb7xOhgy4/edit?usp=sharing]
> A vote has been held, and the name of the extension is selected: 
> apache-beam-jupyterlab-sidepanel



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