enabling minio support for S3 connector

packages/server/src/integrations/s3.ts

@@ -8,6 +8,8 @@ module S3Module {
     region: string
     accessKeyId: string
     secretAccessKey: string
+    s3ForcePathStyle: boolean
+    endpoint?: string
   }
 
   const SCHEMA: Integration = {
@@ -18,7 +20,7 @@ module S3Module {
     datasource: {
       region: {
         type: "string",
-        required: true,
+        required: false,
         default: "us-east-1",
       },
       accessKeyId: {
@@ -33,13 +35,10 @@ module S3Module {
         type: "string",
         required: false,
       },
-      s3ForcePathStyle: {
-        type: "boolean",
-        required: false,
-      },
       signatureVersion: {
         type: "string",
         required: false,
+        default: "v4"
       },
     },
     query: {
@@ -58,16 +57,16 @@ module S3Module {
   class S3Integration implements IntegrationBase {
     private readonly config: S3Config
     private client: any
-    private connectionPromise: Promise<any>
 
     constructor(config: S3Config) {
       this.config = config
-      this.connectionPromise = this.connect()
+      if (this.config.endpoint) {
-      this.client = new AWS.S3()
+        this.config.s3ForcePathStyle = true
+      } else {
+        delete this.config.endpoint
       }
 
-    async connect() {
+      this.client = new AWS.S3(this.config)
-      AWS.config.update(this.config)
     }
 
     async read(query: { bucket: string }) {