[PAI training service] Support virtualCluster configuration (#401)

* [PAI training service] Support virtual cluster config

* fix a small bug to convert virtualCluster to string

src/nni_manager/rest_server/restValidationSchemas.ts

@@ -41,6 +41,7 @@ export namespace ValidationSchemas {
                 memoryMB: joi.number().min(100),
                 gpuNum: joi.number().min(0),
                 command: joi.string().min(1),
+                virtualCluster: joi.string(),
                 worker: joi.object({
                     replicas: joi.number().min(1).required(),
                     image: joi.string().min(1),

src/nni_manager/training_service/pai/paiConfig.ts

@@ -69,6 +69,9 @@ export class PAIJobConfig{
     // List of taskRole, one task role at least
     public taskRoles: PAITaskRole[];
 
+    //The virtual cluster job runs on.
+    public readonly virtualCluster: string;
+
     /**
      * Constructor
      * @param jobName Name for the job, need to be unique
@@ -77,13 +80,15 @@ export class PAIJobConfig{
      * @param outputDir Output directory on HDFS
      * @param taskRoles List of taskRole, one task role at least
      */
-    constructor(jobName: string, image : string, dataDir : string, outputDir : string, codeDir : string, taskRoles : PAITaskRole[]){
+    constructor(jobName: string, image : string, dataDir : string, outputDir : string, codeDir : string, 
+            taskRoles : PAITaskRole[], virtualCluster: string) {
         this.jobName = jobName;
         this.image = image;
         this.dataDir = dataDir;
         this.outputDir = outputDir;
         this.codeDir = codeDir;
         this.taskRoles = taskRoles;
+        this.virtualCluster = virtualCluster;
     }
 }
 
@@ -112,13 +117,18 @@ export class NNIPAITrialConfig extends TrialConfig{
     public readonly dataDir: string; 
     public outputDir: string;
 
-    constructor(command : string, codeDir : string, gpuNum : number, cpuNum: number, memoryMB: number, image: string, dataDir: string, outputDir: string) {
+    //The virtual cluster job runs on. If omitted, the job will run on default virtual cluster
+    public virtualCluster?: string;
+
+    constructor(command : string, codeDir : string, gpuNum : number, cpuNum: number, memoryMB: number, 
+            image: string, dataDir: string, outputDir: string, virtualCluster?: string) {
         super(command, codeDir, gpuNum);
         this.cpuNum = cpuNum;
         this.memoryMB = memoryMB;
         this.image = image;
         this.dataDir = dataDir;
         this.outputDir = outputDir;
+        this.virtualCluster = virtualCluster;
     }
 }
 

src/nni_manager/training_service/pai/paiTrainingService.ts

@@ -236,9 +236,10 @@ class PAITrainingService implements TrainingService {
                                     this.paiTrialConfig.outputDir, 
                                     // codeDir
                                     `$PAI_DEFAULT_FS_URI${hdfsCodeDir}`, 
-                                    // TODO: Add Virutal Cluster
                                     // PAI Task roles
-                                    paiTaskRoles);
+                                    paiTaskRoles, 
+                                    // Add Virutal Cluster 
+                                    this.paiTrialConfig.virtualCluster === undefined ? 'default' : this.paiTrialConfig.virtualCluster.toString());
 
         // Step 2. Upload code files in codeDir onto HDFS
         try {

tools/nni_cmd/config_schema.py

@@ -83,7 +83,8 @@ pai_trial_schema = {
     'memoryMB': int,
     'image': str,
     Optional('dataDir'): Regex(r'hdfs://(([0-9]{1,3}.){3}[0-9]{1,3})(:[0-9]{2,5})?(/.*)?'),
-    Optional('outputDir'): Regex(r'hdfs://(([0-9]{1,3}.){3}[0-9]{1,3})(:[0-9]{2,5})?(/.*)?')
+    Optional('outputDir'): Regex(r'hdfs://(([0-9]{1,3}.){3}[0-9]{1,3})(:[0-9]{2,5})?(/.*)?'),
+    Optional('virtualCluster'): str
     }
 }