Add code to enable defualt login option

component/azstorage/azauth.go

@@ -130,6 +130,12 @@ func getAzBlobAuth(config azAuthConfig) azAuth {
 				azAuthBase: base,
 			},
 		}
+	} else if config.AuthMode == EAuthType.AZDEFAULT() {
+		return &azAuthBlobDefault{
+			azAuthDefault{
+				azAuthBase: base,
+			},
+		}
 	} else {
 		log.Crit("azAuth::getAzBlobAuth : Auth type %s not supported. Failed to create Auth object", config.AuthMode)
 	}
@@ -168,6 +174,12 @@ func getAzDatalakeAuth(config azAuthConfig) azAuth {
 				azAuthBase: base,
 			},
 		}
+	} else if config.AuthMode == EAuthType.AZDEFAULT() {
+		return &azAuthDatalakeDefault{
+			azAuthDefault{
+				azAuthBase: base,
+			},
+		}
 	} else {
 		log.Crit("azAuth::getAzDatalakeAuth : Auth type %s not supported. Failed to create Auth object", config.AuthMode)
 	}

component/azstorage/azauthdefault.go

@@ -0,0 +1,104 @@
+/*
+    _____           _____   _____   ____          ______  _____  ------
+   |     |  |      |     | |     | |     |     | |       |            |
+   |     |  |      |     | |     | |     |     | |       |            |
+   | --- |  |      |     | |-----| |---- |     | |-----| |-----  ------
+   |     |  |      |     | |     | |     |     |       | |       |
+   | ____|  |_____ | ____| | ____| |     |_____|  _____| |_____  |_____
+
+
+   Licensed under the MIT License <http://opensource.org/licenses/MIT>.
+
+   Copyright © 2020-2024 Microsoft Corporation. All rights reserved.
+   Author : <blobfusedev@microsoft.com>
+
+   Permission is hereby granted, free of charge, to any person obtaining a copy
+   of this software and associated documentation files (the "Software"), to deal
+   in the Software without restriction, including without limitation the rights
+   to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+   copies of the Software, and to permit persons to whom the Software is
+   furnished to do so, subject to the following conditions:
+
+   The above copyright notice and this permission notice shall be included in all
+   copies or substantial portions of the Software.
+
+   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+   OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+   SOFTWARE
+*/
+
+package azstorage
+
+import (
+	"github.com/Azure/azure-sdk-for-go/sdk/azidentity"
+	"github.com/Azure/azure-sdk-for-go/sdk/storage/azblob/service"
+	serviceBfs "github.com/Azure/azure-sdk-for-go/sdk/storage/azdatalake/service"
+	"github.com/Azure/azure-storage-fuse/v2/common/log"
+)
+
+// Verify that the Auth implement the correct AzAuth interfaces
+var _ azAuth = &azAuthBlobMSI{}
+var _ azAuth = &azAuthDatalakeMSI{}
+
+type azAuthDefault struct {
+	azAuthBase
+	azOAuthBase
+}
+
+type azAuthBlobDefault struct {
+	azAuthDefault
+}
+
+// getServiceClient : returns MSI based service client for blob
+func (azblobdef *azAuthBlobDefault) getServiceClient(stConfig *AzStorageConfig) (interface{}, error) {
+	cred, err := azidentity.NewDefaultAzureCredential(nil)
+
+	if err != nil {
+		log.Err("azAuthBlobDefault::getServiceClient : Failed to get token credential using environment [%s]", err.Error())
+		return nil, err
+	}
+
+	opts, err := getAzBlobServiceClientOptions(stConfig)
+	if err != nil {
+		log.Err("azAuthBlobDefault::getServiceClient : Failed to create client options [%s]", err.Error())
+		return nil, err
+	}
+
+	svcClient, err := service.NewClient(azblobdef.config.Endpoint, cred, opts)
+	if err != nil {
+		log.Err("azAuthBlobDefault::getServiceClient : Failed to create service client [%s]", err.Error())
+	}
+
+	return svcClient, err
+}
+
+type azAuthDatalakeDefault struct {
+	azAuthDefault
+}
+
+// getServiceClient : returns MSI based service client for datalake
+func (azdfsdef *azAuthDatalakeDefault) getServiceClient(stConfig *AzStorageConfig) (interface{}, error) {
+	cred, err := azidentity.NewDefaultAzureCredential(nil)
+
+	if err != nil {
+		log.Err("azAuthDatalakeDefault::getServiceClient : Failed to get token credential using environment [%s]", err.Error())
+		return nil, err
+	}
+
+	opts, err := getAzDatalakeServiceClientOptions(stConfig)
+	if err != nil {
+		log.Err("azAuthDatalakeDefault::getServiceClient : Failed to create client options [%s]", err.Error())
+		return nil, err
+	}
+
+	svcClient, err := serviceBfs.NewClient(azdfsdef.config.Endpoint, cred, opts)
+	if err != nil {
+		log.Err("azAuthDatalakeDefault::getServiceClient : Failed to create service client [%s]", err.Error())
+	}
+
+	return svcClient, err
+}

component/azstorage/config.go

@@ -75,6 +75,10 @@ func (AuthType) AZCLI() AuthType {
 	return AuthType(5)
 }
 
+func (AuthType) AZDEFAULT() AuthType {
+	return AuthType(6)
+}
+
 func (a AuthType) String() string {
 	return enum.StringInt(a, reflect.TypeOf(a))
 }
@@ -460,7 +464,8 @@ func ParseAndValidateConfig(az *AzStorage, opt AzStorageOptions) error {
 		az.stConfig.authConfig.OAuthTokenFilePath = opt.OAuthTokenFilePath
 	case EAuthType.AZCLI():
 		az.stConfig.authConfig.AuthMode = EAuthType.AZCLI()
-
+	case EAuthType.AZDEFAULT():
+		az.stConfig.authConfig.AuthMode = EAuthType.AZDEFAULT()
 	default:
 		log.Err("ParseAndValidateConfig : Invalid auth mode %s", opt.AuthMode)
 		return errors.New("invalid auth mode")