Merge pull request #82 from rikhil-s/workloadidentity

Azure: Add support for Azure Workload Identity authentication using DefaultAzureCredential

Author: yeya24

go.mod

@@ -37,8 +37,8 @@ require (
 	cloud.google.com/go/compute v1.19.1 // indirect
 	cloud.google.com/go/compute/metadata v0.2.3 // indirect
 	cloud.google.com/go/iam v0.13.0 // indirect
-	github.com/Azure/azure-sdk-for-go/sdk/internal v1.1.1 // indirect
-	github.com/AzureAD/microsoft-authentication-library-for-go v0.7.0 // indirect
+	github.com/Azure/azure-sdk-for-go/sdk/internal v1.3.0 // indirect
+	github.com/AzureAD/microsoft-authentication-library-for-go v1.1.1 // indirect
 	github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751 // indirect
 	github.com/alecthomas/units v0.0.0-20211218093645-b94a6e3cc137 // indirect
 	github.com/aws/aws-sdk-go-v2/credentials v1.11.0 // indirect
@@ -58,12 +58,12 @@ require (
 	github.com/dustin/go-humanize v1.0.1 // indirect
 	github.com/go-logfmt/logfmt v0.5.1 // indirect
 	github.com/gofrs/flock v0.8.1 // indirect
-	github.com/golang-jwt/jwt/v4 v4.4.3 // indirect
+	github.com/golang-jwt/jwt/v5 v5.0.0 // indirect
 	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
 	github.com/golang/protobuf v1.5.3 // indirect
 	github.com/google/go-cmp v0.5.9 // indirect
 	github.com/google/go-querystring v1.1.0 // indirect
-	github.com/google/uuid v1.3.0 // indirect
+	github.com/google/uuid v1.3.1 // indirect
 	github.com/googleapis/enterprise-certificate-proxy v0.2.3 // indirect
 	github.com/googleapis/gax-go/v2 v2.7.1 // indirect
 	github.com/jpillora/backoff v1.0.0 // indirect
@@ -99,8 +99,8 @@ require (
 )
 
 require (
-	github.com/Azure/azure-sdk-for-go/sdk/azcore v1.2.0
-	github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.2.0
+	github.com/Azure/azure-sdk-for-go/sdk/azcore v1.8.0
+	github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.4.0
 	github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v0.5.1
 	github.com/kr/text v0.2.0 // indirect
 	github.com/satori/go.uuid v1.2.1-0.20181028125025-b2ce2384e17b // indirect

go.sum

@@ -42,16 +42,16 @@ cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9
 cloud.google.com/go/storage v1.28.1 h1:F5QDG5ChchaAVQhINh24U99OWHURqrW8OmQcGKXcbgI=
 cloud.google.com/go/storage v1.28.1/go.mod h1:Qnisd4CqDdo6BGs2AD5LLnEsmSQ80wQ5ogcBBKhU86Y=
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
-github.com/Azure/azure-sdk-for-go/sdk/azcore v1.2.0 h1:sVW/AFBTGyJxDaMYlq0ct3jUXTtj12tQ6zE2GZUgVQw=
-github.com/Azure/azure-sdk-for-go/sdk/azcore v1.2.0/go.mod h1:uGG2W01BaETf0Ozp+QxxKJdMBNRWPdstHG0Fmdwn1/U=
-github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.2.0 h1:t/W5MYAuQy81cvM8VUNfRLzhtKpXhVUAN7Cd7KVbTyc=
-github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.2.0/go.mod h1:NBanQUfSWiWn3QEpWDTCU0IjBECKOYvl2R8xdRtMtiM=
-github.com/Azure/azure-sdk-for-go/sdk/internal v1.1.1 h1:Oj853U9kG+RLTCQXpjvOnrv0WaZHxgmZz1TlLywgOPY=
-github.com/Azure/azure-sdk-for-go/sdk/internal v1.1.1/go.mod h1:eWRD7oawr1Mu1sLCawqVc0CUiF43ia3qQMxLscsKQ9w=
+github.com/Azure/azure-sdk-for-go/sdk/azcore v1.8.0 h1:9kDVnTz3vbfweTqAUmk/a/pH5pWFCHtvRpHYC0G/dcA=
+github.com/Azure/azure-sdk-for-go/sdk/azcore v1.8.0/go.mod h1:3Ug6Qzto9anB6mGlEdgYMDF5zHQ+wwhEaYR4s17PHMw=
+github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.4.0 h1:BMAjVKJM0U/CYF27gA0ZMmXGkOcvfFtD0oHVZ1TIPRI=
+github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.4.0/go.mod h1:1fXstnBMas5kzG+S3q8UoJcmyU6nUeunJcMDHcRYHhs=
+github.com/Azure/azure-sdk-for-go/sdk/internal v1.3.0 h1:sXr+ck84g/ZlZUOZiNELInmMgOsuGwdjjVkEIde0OtY=
+github.com/Azure/azure-sdk-for-go/sdk/internal v1.3.0/go.mod h1:okt5dMMTOFjX/aovMlrjvvXoPMBVSPzk9185BT0+eZM=
 github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v0.5.1 h1:BMTdr+ib5ljLa9MxTJK8x/Ds0MbBb4MfuW5BL0zMJnI=
 github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v0.5.1/go.mod h1:c6WvOhtmjNUWbLfOG1qxM/q0SPvQNSVJvolm+C52dIU=
-github.com/AzureAD/microsoft-authentication-library-for-go v0.7.0 h1:VgSJlZH5u0k2qxSpqyghcFQKmvYckj46uymKK5XzkBM=
-github.com/AzureAD/microsoft-authentication-library-for-go v0.7.0/go.mod h1:BDJ5qMFKx9DugEg3+uQSDCdbYPr5s9vBTrL9P8TpqOU=
+github.com/AzureAD/microsoft-authentication-library-for-go v1.1.1 h1:WpB/QDNLpMw72xHJc34BNNykqSOeEJDAWkhf0u12/Jk=
+github.com/AzureAD/microsoft-authentication-library-for-go v1.1.1/go.mod h1:wP83P5OoQ5p6ip3ScPr0BAq0BvuPAvacpEuSzyouqAI=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
 github.com/QcloudApi/qcloud_sign_golang v0.0.0-20141224014652-e4130a326409/go.mod h1:1pk82RBxDY/JZnPQrtqHlUFfCctgdorsd9M06fMynOM=
@@ -111,7 +111,7 @@ github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ3
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/dnaeon/go-vcr v1.1.0 h1:ReYa/UBrRyQdant9B4fNHGoCNKw6qh6P0fsdGmZpR7c=
+github.com/dnaeon/go-vcr v1.2.0 h1:zHCHvJYTMh1N7xnV7zf1m1GPBF9Ad0Jk/whtQ1663qI=
 github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
 github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
 github.com/efficientgo/core v1.0.0-rc.0.0.20221201130417-ba593f67d2a4 h1:rydBwnBoywKQMjWF0z8SriYtQ+uUcaFsxuijMjJr5PI=
@@ -142,8 +142,8 @@ github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/me
 github.com/gofrs/flock v0.8.1 h1:+gYjHKf32LDeiEEFhQaotPbLuUXjY5ZqxKgXy7n59aw=
 github.com/gofrs/flock v0.8.1/go.mod h1:F1TvTiK9OcQqauNUHlbJvyl9Qa1QvF/gOUDKA14jxHU=
 github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
-github.com/golang-jwt/jwt/v4 v4.4.3 h1:Hxl6lhQFj4AnOX6MLrsCb/+7tCj7DxP7VA+2rDIq5AU=
-github.com/golang-jwt/jwt/v4 v4.4.3/go.mod h1:m21LjoU+eqJr34lmDMbreY2eSTRJ1cv77w39/MY0Ch0=
+github.com/golang-jwt/jwt/v5 v5.0.0 h1:1n1XNM9hk7O9mnQoNBGolZvzebBQ7p93ULHRc28XJUE=
+github.com/golang-jwt/jwt/v5 v5.0.0/go.mod h1:pqrtFR0X4osieyHYxtmOUWsAWrfe1Q5UVIyoH402zdk=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
 github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
 github.com/golang/groupcache v0.0.0-20191227052852-215e87163ea7/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
@@ -209,8 +209,8 @@ github.com/google/pprof v0.0.0-20200708004538-1a94d8640e99/go.mod h1:ZgVRPoUq/hf
 github.com/google/renameio v0.1.0/go.mod h1:KWCgfxg9yswjAJkECMjeO8J8rahYeXnNhOm40UhjYkI=
 github.com/google/uuid v1.1.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/google/uuid v1.1.2/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
-github.com/google/uuid v1.3.0 h1:t6JiXgmwXMjEs8VusXIJk2BXHsn+wx8BZdTaoZ5fu7I=
-github.com/google/uuid v1.3.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/google/uuid v1.3.1 h1:KjJaJ9iWZ3jOFZIf1Lqf4laDRCasjl0BCmnEGxkdLb4=
+github.com/google/uuid v1.3.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/googleapis/enterprise-certificate-proxy v0.2.3 h1:yk9/cqRKtT9wXZSsRH9aurXEpJX+U6FLtpYTdC3R06k=
 github.com/googleapis/enterprise-certificate-proxy v0.2.3/go.mod h1:AwSRAtLfXpU5Nm3pW+v7rGDHp09LsPtGY9MduiEsR9k=
 github.com/googleapis/gax-go/v2 v2.0.4/go.mod h1:0Wqv26UfaUD9n4G6kQubkQ+KchISgw+vpHVxEJEs9eg=

providers/azure/helpers.go

@@ -63,18 +63,27 @@ func getContainerClient(conf Config) (*container.Client, error) {
 		return containerClient, nil
 	}
 
-	// Use MSI for authentication.
-	msiOpt := &azidentity.ManagedIdentityCredentialOptions{}
+	// Otherwise use a token credential
+	var cred azcore.TokenCredential
+
+	// Use Managed Identity Credential if a user assigned ID is set
 	if conf.UserAssignedID != "" {
+		msiOpt := &azidentity.ManagedIdentityCredentialOptions{}
 		msiOpt.ID = azidentity.ClientID(conf.UserAssignedID)
+		cred, err = azidentity.NewManagedIdentityCredential(msiOpt)
+	} else {
+		// Otherwise use Default Azure Credential
+		cred, err = azidentity.NewDefaultAzureCredential(nil)
 	}
-	cred, err := azidentity.NewManagedIdentityCredential(msiOpt)
+
 	if err != nil {
 		return nil, err
 	}
+
 	containerClient, err := container.NewClient(containerURL, cred, opt)
 	if err != nil {
 		return nil, err
 	}
+
 	return containerClient, nil
 }