Moving away from goamz to use minio-go instead. (#4193)

minio-go does fully managed way of handling S3 API requests

  - Automatic bucket location management across all s3 regions.
  - Transparently upload large files in multipart if file 64MB
    or larger.
  - Right GetObject() API provides compatibility with
    io.ReadWriteSeeker interface.
  - Various other APIs including bulk deletes, server side object
    copy, bucket policies and bucket notifications.

Fixes #4182

model/config.go

@@ -138,26 +138,24 @@ type PasswordSettings struct {
 }
 
 type FileSettings struct {
-	MaxFileSize                *int64
-	DriverName                 string
-	Directory                  string
-	EnablePublicLink           bool
-	PublicLinkSalt             *string
-	ThumbnailWidth             int
-	ThumbnailHeight            int
-	PreviewWidth               int
-	PreviewHeight              int
-	ProfileWidth               int
-	ProfileHeight              int
-	InitialFont                string
-	AmazonS3AccessKeyId        string
-	AmazonS3SecretAccessKey    string
-	AmazonS3Bucket             string
-	AmazonS3Region             string
-	AmazonS3Endpoint           string
-	AmazonS3BucketEndpoint     string
-	AmazonS3LocationConstraint *bool
-	AmazonS3LowercaseBucket    *bool
+	MaxFileSize             *int64
+	DriverName              string
+	Directory               string
+	EnablePublicLink        bool
+	PublicLinkSalt          *string
+	ThumbnailWidth          int
+	ThumbnailHeight         int
+	PreviewWidth            int
+	PreviewHeight           int
+	ProfileWidth            int
+	ProfileHeight           int
+	InitialFont             string
+	AmazonS3AccessKeyId     string
+	AmazonS3SecretAccessKey string
+	AmazonS3Bucket          string
+	AmazonS3Region          string
+	AmazonS3Endpoint        string
+	AmazonS3SSL             *bool
 }
 
 type EmailSettings struct {
@@ -374,26 +372,27 @@ func (o *Config) SetDefaults() {
 		o.SqlSettings.AtRestEncryptKey = NewRandomString(32)
 	}
 
+	if o.FileSettings.AmazonS3Endpoint == "" {
+		// Defaults to "s3.amazonaws.com"
+		o.FileSettings.AmazonS3Endpoint = "s3.amazonaws.com"
+	}
+	if o.FileSettings.AmazonS3Region == "" {
+		// Defaults to "us-east-1" region.
+		o.FileSettings.AmazonS3Region = "us-east-1"
+	}
+	if o.FileSettings.AmazonS3SSL == nil {
+		o.FileSettings.AmazonS3SSL = new(bool)
+		*o.FileSettings.AmazonS3SSL = true // Secure by default.
+	}
 	if o.FileSettings.MaxFileSize == nil {
 		o.FileSettings.MaxFileSize = new(int64)
 		*o.FileSettings.MaxFileSize = 52428800 // 50 MB
 	}
-
 	if len(*o.FileSettings.PublicLinkSalt) == 0 {
 		o.FileSettings.PublicLinkSalt = new(string)
 		*o.FileSettings.PublicLinkSalt = NewRandomString(32)
 	}
 
-	if o.FileSettings.AmazonS3LocationConstraint == nil {
-		o.FileSettings.AmazonS3LocationConstraint = new(bool)
-		*o.FileSettings.AmazonS3LocationConstraint = false
-	}
-
-	if o.FileSettings.AmazonS3LowercaseBucket == nil {
-		o.FileSettings.AmazonS3LowercaseBucket = new(bool)
-		*o.FileSettings.AmazonS3LowercaseBucket = false
-	}
-
 	if len(o.EmailSettings.InviteSalt) == 0 {
 		o.EmailSettings.InviteSalt = NewRandomString(32)
 	}