Feat: repo api done

src/app.service.ts

@@ -1,8 +1,41 @@
-import { Injectable } from '@nestjs/common';
+import { Readable } from 'stream';
+import { Injectable, HttpException, HttpStatus } from '@nestjs/common';
+import { ConfigService } from '@nestjs/config';
+import {
+  S3Client,
+  S3ClientConfig,
+  GetObjectCommand,
+  GetObjectCommandInput,
+} from '@aws-sdk/client-s3';
 
 @Injectable()
 export class AppService {
-  getHello(): string {
-    return 'Hello World!';
+  private readonly s3Client: S3Client;
+
+  constructor(private readonly configService: ConfigService) {
+    this.s3Client = new S3Client({
+      region: 'us-west-1',
+      endpoint: this.configService.get<string>('MINIO_ENDPOINT'),
+      credentials: {
+        accessKeyId: this.configService.get<string>('MINIO_ACCESSKEY'),
+        secretAccessKey: this.configService.get<string>('MINIO_SECRETKEY'),
+      },
+      forcePathStyle: true,
+    } as S3ClientConfig);
+  }
+
+  getHealthz(): string {
+    return 'OK';
+  }
+
+  async getObject(getObjectConfig: GetObjectCommandInput): Promise<Readable> {
+    const command = new GetObjectCommand(getObjectConfig);
+    const res = await this.s3Client.send(command);
+    if (!res.Body)
+      throw new HttpException(
+        's3 get object failed',
+        HttpStatus.INTERNAL_SERVER_ERROR,
+      );
+    return res.Body as Readable;
   }
 }