support display trial log on local mode

src/nni_manager/common/manager.ts

@@ -4,7 +4,7 @@
 'use strict';
 
 import { MetricDataRecord, MetricType, TrialJobInfo } from './datastore';
-import { TrialJobStatus } from './trainingService';
+import { TrialJobStatus, LogType } from './trainingService';
 
 type ProfileUpdateType = 'TRIAL_CONCURRENCY' | 'MAX_EXEC_DURATION' | 'SEARCH_SPACE' | 'MAX_TRIAL_NUM';
 type ExperimentStatus = 'INITIALIZED' | 'RUNNING' | 'ERROR' | 'STOPPING' | 'STOPPED' | 'DONE' | 'NO_MORE_TRIAL' | 'TUNER_NO_MORE_TRIAL';
@@ -101,6 +101,8 @@ abstract class Manager {
     public abstract getMetricDataByRange(minSeqId: number, maxSeqId: number): Promise<MetricDataRecord[]>;
     public abstract getLatestMetricData(): Promise<MetricDataRecord[]>;
 
+    public abstract getTrialLog(trialJobId: string, logType: LogType): Promise<string>;
+
     public abstract getTrialJobStatistics(): Promise<TrialJobStatistics[]>;
     public abstract getStatus(): NNIManagerStatus;
 }

src/nni_manager/common/trainingService.ts

@@ -8,6 +8,8 @@
  */
 type TrialJobStatus = 'UNKNOWN' | 'WAITING' | 'RUNNING' | 'SUCCEEDED' | 'FAILED' | 'USER_CANCELED' | 'SYS_CANCELED' | 'EARLY_STOPPED';
 
+type LogType = 'TRIAL_LOG' | 'TRIAL_ERROR';
+
 interface TrainingServiceMetadata {
     readonly key: string;
     readonly value: string;
@@ -79,6 +81,7 @@ abstract class TrainingService {
     public abstract updateTrialJob(trialJobId: string, form: TrialJobApplicationForm): Promise<TrialJobDetail>;
     public abstract get isMultiPhaseJobSupported(): boolean;
     public abstract cancelTrialJob(trialJobId: string, isEarlyStopped?: boolean): Promise<void>;
+    public abstract getTrialLog(trialJobId: string, logType: LogType): Promise<string>;
     public abstract setClusterMetadata(key: string, value: string): Promise<void>;
     public abstract getClusterMetadata(key: string): Promise<string>;
     public abstract cleanUp(): Promise<void>;
@@ -98,5 +101,5 @@ class NNIManagerIpConfig {
 export {
     TrainingService, TrainingServiceError, TrialJobStatus, TrialJobApplicationForm,
     TrainingServiceMetadata, TrialJobDetail, TrialJobMetric, HyperParameters,
-    NNIManagerIpConfig
+    NNIManagerIpConfig, LogType
 };

src/nni_manager/core/nnimanager.ts

@@ -16,7 +16,7 @@ import {
     NNIManagerStatus, ProfileUpdateType, TrialJobStatistics
 } from '../common/manager';
 import {
-    TrainingService, TrialJobApplicationForm, TrialJobDetail, TrialJobMetric, TrialJobStatus
+    TrainingService, TrialJobApplicationForm, TrialJobDetail, TrialJobMetric, TrialJobStatus, LogType
 } from '../common/trainingService';
 import { delay, getCheckpointDir, getExperimentRootDir, getLogDir, getMsgDispatcherCommand, mkDirP, getTunerProc, getLogLevel, isAlive, killPid } from '../common/utils';
 import {
@@ -325,6 +325,10 @@ class NNIManager implements Manager {
         // FIXME: unit test
     }
 
+    public async getTrialLog(trialJobId: string, logType: LogType): Promise<string> {
+        return this.trainingService.getTrialLog(trialJobId, logType);
+    }
+
     public getExperimentProfile(): Promise<ExperimentProfile> {
         // TO DO: using Promise.resolve()
         const deferred: Deferred<ExperimentProfile> = new Deferred<ExperimentProfile>();

src/nni_manager/core/test/mockedTrainingService.ts

@@ -7,7 +7,7 @@ import { Deferred } from 'ts-deferred';
 import { Provider } from 'typescript-ioc';
 
 import { MethodNotImplementedError } from '../../common/errors';
-import { TrainingService, TrialJobApplicationForm, TrialJobDetail, TrialJobMetric } from '../../common/trainingService';
+import { TrainingService, TrialJobApplicationForm, TrialJobDetail, TrialJobMetric, LogType } from '../../common/trainingService';
 
 const testTrainingServiceProvider: Provider = {
     get: () => { return new MockedTrainingService(); }
@@ -63,6 +63,10 @@ class MockedTrainingService extends TrainingService {
         return deferred.promise;
     }
 
+    public getTrialLog(trialJobId: string, logType: LogType): Promise<string> {
+        throw new MethodNotImplementedError();
+    }
+
     async run(): Promise<void> {
 
     }

src/nni_manager/rest_server/restHandler.ts

@@ -57,6 +57,7 @@ class NNIRestHandler {
         this.getMetricData(router);
         this.getMetricDataByRange(router);
         this.getLatestMetricData(router);
+        this.getTrialLog(router);
         this.exportData(router);
 
         // Express-joi-validator configuration
@@ -268,6 +269,19 @@ class NNIRestHandler {
         });
     }
 
+    private getTrialLog(router: Router): void {
+        router.get('/trial-log/:id/:type', async(req: Request, res: Response) => {
+            this.nniManager.getTrialLog(req.params.id, req.params.type).then((log: string) => {
+                if (log === '') {
+                    log = 'No logs available.'
+                }
+                res.send(log);
+            }).catch((err: Error) => {
+                this.handleError(err, res);
+            });
+        });
+    }
+
     private exportData(router: Router): void {
         router.get('/export-data', (req: Request, res: Response) => {
             this.nniManager.exportData().then((exportedData: string) => {

src/nni_manager/rest_server/test/mockedNNIManager.ts

@@ -13,7 +13,7 @@ import {
     TrialJobStatistics, NNIManagerStatus
 } from '../../common/manager';
 import {
-    TrialJobApplicationForm, TrialJobDetail, TrialJobStatus
+    TrialJobApplicationForm, TrialJobDetail, TrialJobStatus, LogType
 } from '../../common/trainingService';
 
 export const testManagerProvider: Provider = {
@@ -118,6 +118,9 @@ export class MockedNNIManager extends Manager {
     public getLatestMetricData(): Promise<MetricDataRecord[]> {
         throw new MethodNotImplementedError();
     }
+    public getTrialLog(trialJobId: string, logType: LogType): Promise<string> {
+        throw new MethodNotImplementedError();
+    }
     public getExperimentProfile(): Promise<ExperimentProfile> {
         const profile: ExperimentProfile = {
             params: {

src/nni_manager/training_service/dlts/dltsTrainingService.ts

@@ -12,9 +12,10 @@ import { EventEmitter } from 'events';
 import { String } from 'typescript-string-operations';
 import { getExperimentId } from '../../common/experimentStartupInfo';
 import { getLogger, Logger } from '../../common/log';
+import { MethodNotImplementedError } from '../../common/errors';
 import {
     NNIManagerIpConfig, TrainingService,
-    TrialJobApplicationForm, TrialJobDetail, TrialJobMetric
+    TrialJobApplicationForm, TrialJobDetail, TrialJobMetric, LogType
 } from '../../common/trainingService';
 import { DLTS_TRIAL_COMMAND_FORMAT } from './dltsData';
 import { CONTAINER_INSTALL_NNI_SHELL_FORMAT } from '../common/containerJobData';
@@ -246,6 +247,10 @@ class DLTSTrainingService implements TrainingService {
         return trialJob
     }
 
+    public async getTrialLog(_trialJobId: string, _logType: LogType): Promise<string> {
+        throw new MethodNotImplementedError();
+    }
+
     public addTrialJobMetricListener(listener: (metric: TrialJobMetric) => void): void {
         this.metricsEmitter.on('metric', listener);
     }

src/nni_manager/training_service/kubernetes/kubernetesTrainingService.ts

@@ -12,8 +12,9 @@ import { Base64 } from 'js-base64';
 import { String } from 'typescript-string-operations';
 import { getExperimentId } from '../../common/experimentStartupInfo';
 import { getLogger, Logger } from '../../common/log';
+import { MethodNotImplementedError } from '../../common/errors';
 import {
-    NNIManagerIpConfig, TrialJobDetail, TrialJobMetric
+    NNIManagerIpConfig, TrialJobDetail, TrialJobMetric, LogType
 } from '../../common/trainingService';
 import { delay, getExperimentRootDir, getIPV4Address, getJobCancelStatus, getVersion, uniqueString } from '../../common/utils';
 import { AzureStorageClientUtility } from './azureStorageClientUtils';
@@ -98,6 +99,10 @@ abstract class KubernetesTrainingService {
         return Promise.resolve(kubernetesTrialJob);
     }
 
+    public async getTrialLog(_trialJobId: string, _logType: LogType): Promise<string> {
+        throw new MethodNotImplementedError();
+    }
+
     public addTrialJobMetricListener(listener: (metric: TrialJobMetric) => void): void {
         this.metricsEmitter.on('metric', listener);
     }

src/nni_manager/training_service/local/localTrainingService.ts

@@ -14,7 +14,7 @@ import { getExperimentId } from '../../common/experimentStartupInfo';
 import { getLogger, Logger } from '../../common/log';
 import {
     HyperParameters, TrainingService, TrialJobApplicationForm,
-    TrialJobDetail, TrialJobMetric, TrialJobStatus
+    TrialJobDetail, TrialJobMetric, TrialJobStatus, LogType
 } from '../../common/trainingService';
 import {
     delay, generateParamFileName, getExperimentRootDir, getJobCancelStatus, getNewLine, isAlive, uniqueString
@@ -184,6 +184,18 @@ class LocalTrainingService implements TrainingService {
         return trialJob;
     }
 
+    public async getTrialLog(trialJobId: string, logType: LogType): Promise<string> {
+        let logPath: string;
+        if (logType === 'TRIAL_LOG') {
+            logPath = path.join(this.rootDir, 'trials', trialJobId, 'trial.log');
+        } else if (logType === 'TRIAL_ERROR') {
+            logPath = path.join(this.rootDir, 'trials', trialJobId, 'stderr');
+        } else {
+            throw new Error('unexpected log type');
+        }
+        return fs.promises.readFile(logPath, 'utf8');
+    }
+
     public addTrialJobMetricListener(listener: (metric: TrialJobMetric) => void): void {
         this.eventEmitter.on('metric', listener);
     }
@@ -450,8 +462,8 @@ class LocalTrainingService implements TrainingService {
         while (!this.stopping) {
             while (!this.stopping && this.jobQueue.length !== 0) {
                 const trialJobId: string = this.jobQueue[0];
-                const trialJobDeatil: LocalTrialJobDetail | undefined = this.jobMap.get(trialJobId);
-                if (trialJobDeatil !== undefined && trialJobDeatil.status === 'WAITING') {
+                const trialJobDetail: LocalTrialJobDetail | undefined = this.jobMap.get(trialJobId);
+                if (trialJobDetail !== undefined && trialJobDetail.status === 'WAITING') {
                     const [success, resource] = this.tryGetAvailableResource();
                     if (!success) {
                         break;

src/nni_manager/training_service/pai/paiTrainingService.ts

@@ -11,9 +11,10 @@ import { EventEmitter } from 'events';
 import { Deferred } from 'ts-deferred';
 import { getExperimentId } from '../../common/experimentStartupInfo';
 import { getLogger, Logger } from '../../common/log';
+import { MethodNotImplementedError } from '../../common/errors';
 import {
     NNIManagerIpConfig, TrainingService,
-    TrialJobApplicationForm, TrialJobDetail, TrialJobMetric
+    TrialJobApplicationForm, TrialJobDetail, TrialJobMetric, LogType
 } from '../../common/trainingService';
 import { delay } from '../../common/utils';
 import { PAIJobInfoCollector } from './paiJobInfoCollector';
@@ -117,6 +118,10 @@ abstract class PAITrainingService implements TrainingService {
         return jobs;
     }
 
+    public async getTrialLog(_trialJobId: string, _logType: LogType): Promise<string> {
+        throw new MethodNotImplementedError();
+    }
+
     public async getTrialJob(trialJobId: string): Promise<TrialJobDetail> {
         if (this.paiClusterConfig === undefined) {
             throw new Error('PAI Cluster config is not initialized');

src/nni_manager/training_service/remote_machine/remoteMachineTrainingService.ts

@@ -10,13 +10,13 @@ import * as path from 'path';
 import { ShellExecutor } from 'training_service/remote_machine/shellExecutor';
 import { Deferred } from 'ts-deferred';
 import * as component from '../../common/component';
-import { NNIError, NNIErrorNames } from '../../common/errors';
+import { NNIError, NNIErrorNames, MethodNotImplementedError } from '../../common/errors';
 import { getExperimentId } from '../../common/experimentStartupInfo';
 import { getLogger, Logger } from '../../common/log';
 import { ObservableTimer } from '../../common/observableTimer';
 import {
     HyperParameters, NNIManagerIpConfig, TrainingService, TrialJobApplicationForm,
-    TrialJobDetail, TrialJobMetric
+    TrialJobDetail, TrialJobMetric, LogType
 } from '../../common/trainingService';
 import {
     delay, generateParamFileName, getExperimentRootDir, getIPV4Address, getJobCancelStatus,
@@ -180,6 +180,15 @@ class RemoteMachineTrainingService implements TrainingService {
         }
     }
 
+    /**
+     * Get trial job log
+     * @param _trialJobId ID of trial job
+     * @param _logType 'TRIAL_LOG' | 'TRIAL_STDERR'
+     */
+    public async getTrialLog(_trialJobId: string, _logType: LogType): Promise<string> {
+        throw new MethodNotImplementedError();
+    }
+
     /**
      * Add job metrics listener
      * @param listener callback listener

src/nni_manager/training_service/reusable/routerTrainingService.ts

@@ -6,7 +6,8 @@
 import { Container, Scope } from 'typescript-ioc';
 import * as component from '../../common/component';
 import { getLogger, Logger } from '../../common/log';
-import { TrainingService, TrialJobApplicationForm, TrialJobDetail, TrialJobMetric } from '../../common/trainingService';
+import { MethodNotImplementedError } from '../../common/errors'
+import { TrainingService, TrialJobApplicationForm, TrialJobDetail, TrialJobMetric, LogType } from '../../common/trainingService';
 import { delay } from '../../common/utils';
 import { TrialConfigMetadataKey } from '../common/trialConfigMetadataKey';
 import { PAIClusterConfig } from '../pai/paiConfig';
@@ -47,6 +48,10 @@ class RouterTrainingService implements TrainingService {
         return await this.internalTrainingService.getTrialJob(trialJobId);
     }
 
+    public async getTrialLog(_trialJobId: string, _logType: LogType): Promise<string> {
+        throw new MethodNotImplementedError();
+    }
+
     public addTrialJobMetricListener(listener: (metric: TrialJobMetric) => void): void {
         if (this.internalTrainingService === undefined) {
             throw new Error("TrainingService is not assigned!");

src/nni_manager/training_service/reusable/trialDispatcher.ts

@@ -9,10 +9,10 @@ import * as path from 'path';
 import { Writable } from 'stream';
 import { String } from 'typescript-string-operations';
 import * as component from '../../common/component';
-import { NNIError, NNIErrorNames } from '../../common/errors';
+import { NNIError, NNIErrorNames, MethodNotImplementedError } from '../../common/errors';
 import { getBasePort, getExperimentId, getPlatform } from '../../common/experimentStartupInfo';
 import { getLogger, Logger } from '../../common/log';
-import { NNIManagerIpConfig, TrainingService, TrialJobApplicationForm, TrialJobMetric, TrialJobStatus } from '../../common/trainingService';
+import { NNIManagerIpConfig, TrainingService, TrialJobApplicationForm, TrialJobMetric, TrialJobStatus, LogType } from '../../common/trainingService';
 import { delay, getExperimentRootDir, getIPV4Address, getLogLevel, getVersion, mkDirPSync, uniqueString } from '../../common/utils';
 import { GPU_INFO, INITIALIZED, KILL_TRIAL_JOB, NEW_TRIAL_JOB, REPORT_METRIC_DATA, SEND_TRIAL_JOB_PARAMETER, STDOUT, TRIAL_END, VERSION_CHECK } from '../../core/commands';
 import { ScheduleResultType } from '../../training_service/common/gpuData';
@@ -111,6 +111,10 @@ class TrialDispatcher implements TrainingService {
         return trial;
     }
 
+    public async getTrialLog(_trialJobId: string, _logType: LogType): Promise<string> {
+        throw new MethodNotImplementedError();
+    }
+
     public async submitTrialJob(form: TrialJobApplicationForm): Promise<TrialDetail> {
         if (this.trialConfig === undefined) {
             throw new Error(`trialConfig not initialized!`);

src/nni_manager/training_service/test/localTrainingService.test.ts

@@ -7,10 +7,12 @@ import * as assert from 'assert';
 import * as chai from 'chai';
 import * as chaiAsPromised from 'chai-as-promised';
 import * as fs from 'fs';
+import * as path from 'path';
 import * as tmp from 'tmp';
 import * as component from '../../common/component';
 import { TrialJobApplicationForm, TrialJobDetail, TrainingService } from '../../common/trainingService';
-import { cleanupUnitTest, delay, prepareUnitTest } from '../../common/utils';
+import { cleanupUnitTest, delay, prepareUnitTest, getExperimentRootDir } from '../../common/utils';
+import { getExperimentId } from '../../common/experimentStartupInfo'
 import { TrialConfigMetadataKey } from '../common/trialConfigMetadataKey';
 import { LocalTrainingService } from '../local/localTrainingService';
 
@@ -72,6 +74,38 @@ describe('Unit Test for LocalTrainingService', () => {
         chai.expect(jobDetail.status).to.be.equals('USER_CANCELED');
     }).timeout(20000);
 
+    it('Get trial log', async () => {
+        // set meta data
+        const trialConfig: string = `{\"command\":\"python3 mockedTrial.py\", \"codeDir\":\"${localCodeDir}\",\"gpuNum\":0}`
+        await localTrainingService.setClusterMetadata(TrialConfigMetadataKey.TRIAL_CONFIG, trialConfig);
+
+        // submit job
+        const form: TrialJobApplicationForm = {
+            sequenceId: 0,
+            hyperParameters: {
+                value: 'mock hyperparameters',
+                index: 0
+            }
+        };
+
+        const jobDetail: TrialJobDetail = await localTrainingService.submitTrialJob(form);
+
+        // get trial log
+        const rootDir: string = getExperimentRootDir()
+        fs.mkdirSync(path.join(rootDir, 'trials'))
+        fs.mkdirSync(jobDetail.workingDirectory)
+        fs.writeFileSync(path.join(jobDetail.workingDirectory, 'trial.log'), 'trial log')
+        fs.writeFileSync(path.join(jobDetail.workingDirectory, 'stderr'), 'trial stderr')
+        chai.expect(await localTrainingService.getTrialLog(jobDetail.id, 'TRIAL_LOG')).to.be.equals('trial log');
+        chai.expect(await localTrainingService.getTrialLog(jobDetail.id, 'TRIAL_ERROR')).to.be.equals('trial stderr');
+        fs.unlinkSync(path.join(jobDetail.workingDirectory, 'trial.log'))
+        fs.unlinkSync(path.join(jobDetail.workingDirectory, 'stderr'))
+        fs.rmdirSync(jobDetail.workingDirectory)
+        fs.rmdirSync(path.join(rootDir, 'trials'))
+
+        await localTrainingService.cancelTrialJob(jobDetail.id);
+    }).timeout(20000);
+
     it('Read metrics, Add listener, and remove listener', async () => {
         // set meta data
         const trialConfig: string = `{\"command\":\"python3 mockedTrial.py\", \"codeDir\":\"${localCodeDir}\",\"gpuNum\":0}`