Mount HDFS Dialog: basic support (#7580)

Implemented in this PR

- New base dialog for anything needing to work with the controller. This is important since going from SQL -> Controller we "should" have the right permissions but aren't guaranteed
- Support for Mount HDFS via a dialog. Includes basic polling for success/failure, but have to give up after 2.5min as mounting could take hours. By then it's assumed to be successful since server-side has 2min timeout built in.


Not implemented in this PR

- Script as Notebook button. This should convert the inputs to a set of cells in a notebook so users can run things themselves
- Updates based on PM / UX reviews. I think we'll need a round of feedback before completing this work.

extensions/big-data-cluster/src/bigDataCluster/controller/clusterControllerApi.ts

@@ -4,8 +4,9 @@
  *--------------------------------------------------------------------------------------------*/
 
 import * as request from 'request';
+
 import { authenticateKerberos, getHostAndPortFromEndpoint } from '../auth';
-import { BdcRouterApi, Authentication, EndpointModel, BdcStatusModel } from './apiGenerated';
+import { BdcRouterApi, Authentication, EndpointModel, BdcStatusModel, DefaultApi } from './apiGenerated';
 import { TokenRouterApi } from './clusterApiGenerated2';
 import { AuthType } from '../constants';
 import * as nls from 'vscode-nls';
@@ -73,6 +74,16 @@ class BdcApiWrapper extends BdcRouterApi {
 		this.authentications.default = auth;
 	}
 }
+class DefaultApiWrapper extends DefaultApi {
+	constructor(basePathOrUsername: string, password: string, basePath: string, auth: Authentication) {
+		if (password) {
+			super(basePathOrUsername, password, basePath);
+		} else {
+			super(basePath, undefined, undefined);
+		}
+		this.authentications.default = auth;
+	}
+}
 
 export class ClusterController {
 
@@ -170,6 +181,39 @@ export class ClusterController {
 			throw new ControllerError(error, localize('bdc.error.getBdcStatus', "Error retrieving BDC status from {0}", this._url));
 		}
 	}
+
+	public async mountHdfs(mountPath: string, remoteUri: string, credentials: {}): Promise<MountResponse> {
+		let auth = await this.authPromise;
+		const api = new DefaultApiWrapper(this.username, this.password, this._url, auth);
+
+		try {
+			const mountStatus = await api.createMount('', '', remoteUri, mountPath, credentials);
+			return {
+				response: mountStatus.response,
+				status: mountStatus.body
+			};
+		} catch (error) {
+			// TODO handle 401 by reauthenticating
+			throw new ControllerError(error, localize('bdc.error.mountHdfs', "Error creating mount"));
+		}
+	}
+
+	public async getMountStatus(mountPath?: string): Promise<MountStatusResponse> {
+		let auth = await this.authPromise;
+		const api = new DefaultApiWrapper(this.username, this.password, this._url, auth);
+
+		try {
+			const mountStatus = await api.listMounts('', '', mountPath);
+			return {
+				response: mountStatus.response,
+				mount: mountStatus.body ? JSON.parse(mountStatus.body) : undefined
+			};
+		} catch (error) {
+			// TODO handle 401 by reauthenticating
+			throw new ControllerError(error, localize('bdc.error.mountHdfs', "Error creating mount"));
+		}
+	}
+
 }
 /**
  * Fixes missing protocol and wrong character for port entered by user
@@ -203,6 +247,28 @@ export interface IBdcStatusResponse {
 	bdcStatus: BdcStatusModel;
 }
 
+export enum MountState {
+	Creating = 'Creating',
+	Ready = 'Ready',
+	Error = 'Error'
+}
+
+export interface MountInfo {
+	mount: string;
+	remote: string;
+	state: MountState;
+	error?: string;
+}
+
+export interface MountResponse {
+	response: IHttpResponse;
+	status: any;
+}
+export interface MountStatusResponse {
+	response: IHttpResponse;
+	mount: MountInfo[];
+}
+
 export interface IHttpResponse {
 	method?: string;
 	url?: string;