Create simple 'Debug Sessions' view to show comps under debugging

Fix #1619.

Signed-off-by: Denis Golovin <dgolovin@redhat.com>

Author: dgolovin

package.json

@@ -728,6 +728,10 @@
         {
           "id": "openshiftWatchView",
           "name": "Watch Sessions"
+        },
+        {
+          "id": "openshiftDebugView",
+          "name": "Debug Sessions"
         }
       ]
     },

src/debug.ts

@@ -0,0 +1,103 @@
+/*-----------------------------------------------------------------------------------------------
+ *  Copyright (c) Red Hat, Inc. All rights reserved.
+ *  Licensed under the MIT License. See LICENSE file in the project root for license information.
+ *-----------------------------------------------------------------------------------------------*/
+
+import {
+    TreeDataProvider,
+    TreeItem,
+    Event,
+    ProviderResult,
+    EventEmitter,
+    Disposable,
+    TreeView,
+    window,
+    TreeItemCollapsibleState,
+    commands,
+    debug,
+    DebugSession,
+} from 'vscode';
+
+import { Odo, OdoImpl } from './odo';
+
+class DebugSessionEntry {
+    label: string;
+    session: DebugSession;
+}
+
+export class DebugSessionsView implements TreeDataProvider<string>, Disposable {
+    private static instance: DebugSessionsView;
+    private static sessions: Map<string, DebugSessionEntry> = new Map();
+
+    private static odoctl: Odo = OdoImpl.Instance;
+
+    private treeView: TreeView<string>;
+
+    private onDidChangeTreeDataEmitter: EventEmitter<string> =
+        new EventEmitter<string | undefined>();
+
+    readonly onDidChangeTreeData: Event<string | undefined> = this
+        .onDidChangeTreeDataEmitter.event;
+
+    private constructor() {
+        this.treeView = window.createTreeView('openshiftDebugView', {
+            treeDataProvider: this,
+        });
+        debug.onDidStartDebugSession((session) => {
+            if (session.configuration.contextPath) {
+                const osObj = DebugSessionsView.odoctl.getOpenShiftObjectByContext(session.configuration.contextPath.fsPath);
+                DebugSessionsView.sessions.set(session.configuration.contextPath.fsPath, {
+                    label: `${osObj.getParent().getParent().getName()}/${osObj.getParent().getName()}/${osObj.getName()}`,
+                    session
+                });
+                this.refresh();
+            }
+        }),
+        debug.onDidTerminateDebugSession((session) => {
+            if (session.configuration?.contextPath) {
+                DebugSessionsView.sessions.delete(session.configuration.contextPath.fsPath);
+                this.refresh();
+            }
+        })
+    }
+
+    static getInstance(): DebugSessionsView {
+        if (!DebugSessionsView.instance) {
+            DebugSessionsView.instance = new DebugSessionsView();
+        }
+        return DebugSessionsView.instance;
+    }
+
+    // eslint-disable-next-line class-methods-use-this
+    getTreeItem(element: string): TreeItem | Thenable<TreeItem> {
+        return {
+            label: DebugSessionsView.sessions.get(element).label,
+            collapsibleState: TreeItemCollapsibleState.None,
+            contextValue: 'openshift.debug.session',
+            iconPath: DebugSessionsView.odoctl.getOpenShiftObjectByContext(element).iconPath,
+            command: {
+                command: 'workbench.view.debug',
+                title: 'Show Debug and Run'
+            }
+        };
+    }
+
+    // eslint-disable-next-line class-methods-use-this
+    getChildren(): ProviderResult<string[]> {
+        return [...DebugSessionsView.sessions.keys()];
+    }
+
+    // eslint-disable-next-line class-methods-use-this
+    getParent?(): string {
+        return undefined;
+    }
+
+    refresh(): void {
+        this.onDidChangeTreeDataEmitter.fire();
+    }
+
+    dispose(): void {
+        this.treeView.dispose();
+    }
+
+}

src/extension.ts

@@ -21,11 +21,13 @@ import { registerCommands } from './vscommand';
 import { ToolsConfig } from './tools';
 import { extendClusterExplorer } from './k8s/clusterExplorer';
 import { WatchSessionsView } from './watch';
+import { DebugSessionsView } from './debug';
 
 import path = require('path');
 import fsx = require('fs-extra');
 import treeKill = require('tree-kill');
 
+
 // eslint-disable-next-line @typescript-eslint/no-empty-function
 // this method is called when your extension is deactivated
 export function deactivate(): void {
@@ -70,6 +72,7 @@ export async function activate(extensionContext: ExtensionContext): Promise<any>
         ),
         OpenShiftExplorer.getInstance(),
         WatchSessionsView.getInstance(),
+        DebugSessionsView.getInstance(),
         ...Component.init(extensionContext)
     ];
     disposable.forEach((value) => extensionContext.subscriptions.push(value));