Enable custom filename for auth credentials

Signed-off-by: Alex Ellis <alexellis2@gmail.com>

auth/basic-auth/Gopkg.lock

@@ -2,12 +2,12 @@
 
 
 [[projects]]
-  digest = "1:deb76da5396c9f641ddea9ca79e31a14bdb09c787cdfda90488768b7539b1fd6"
+  digest = "1:57ef1eb08e128d58c028f402b2030582907c49efc461f4764cf5c9161a4af2c0"
   name = "github.com/openfaas/faas-provider"
   packages = ["auth"]
   pruneopts = "UT"
-  revision = "6a76a052deb12fd94b373c082963d8a8ad44d4d1"
-  version = "0.9.0"
+  revision = "376c26ef02007abb7cadbd550bb75df166764473"
+  version = "0.9.1"
 
 [[projects]]
   digest = "1:cf31692c14422fa27c83a05292eb5cbe0fb2775972e8f1f8446a71549bd8980b"

auth/basic-auth/Gopkg.toml

@@ -1,33 +1,6 @@
-# Gopkg.toml example
-#
-# Refer to https://golang.github.io/dep/docs/Gopkg.toml.html
-# for detailed Gopkg.toml documentation.
-#
-# required = ["github.com/user/thing/cmd/thing"]
-# ignored = ["github.com/user/project/pkgX", "bitbucket.org/user/project/pkgA/pkgY"]
-#
-# [[constraint]]
-#   name = "github.com/user/project"
-#   version = "1.0.0"
-#
-# [[constraint]]
-#   name = "github.com/user/project2"
-#   branch = "dev"
-#   source = "github.com/myfork/project2"
-#
-# [[override]]
-#   name = "github.com/x/y"
-#   version = "2.4.0"
-#
-# [prune]
-#   non-go = false
-#   go-tests = true
-#   unused-packages = true
-
-
 [[constraint]]
   name = "github.com/openfaas/faas-provider"
-  version = "0.9.0"
+  version = "0.9.1"
 
 [prune]
   go-tests = true

auth/basic-auth/README.md

@@ -6,6 +6,8 @@ This component implements [Basic Authentication](https://en.wikipedia.org/wiki/B
 To run this plugin you will need to create and bind a secret named `basic-auth-user` and `basic-auth-password`
 
 | Option                          | Usage             |
-|------------------------|--------------|
+|---------------------------------|--------------|
 | `port`                          | Set the HTTP port |
 | `secret_mount_path`             | It is recommended that this is set to `/var/openfaas/secrets` |
+| `user_filename`                 | File to read from disk for username, default empty |
+| `pass_filename`                 | File to read from disk for username, default empty |

auth/basic-auth/main.go

@@ -33,6 +33,8 @@ func main() {
 
 	credentialsReader := auth.ReadBasicAuthFromDisk{
 		SecretMountPath:  os.Getenv("secret_mount_path"),
+		UserFilename:     os.Getenv("user_filename"),
+		PasswordFilename: os.Getenv("pass_filename"),
 	}
 
 	credentials, err := credentialsReader.Read()

auth/basic-auth/vendor/github.com/openfaas/faas-provider/auth/credentials.go

@@ -22,6 +22,10 @@ type ReadBasicAuth interface {
 
 type ReadBasicAuthFromDisk struct {
 	SecretMountPath string
+
+	UserFilename string
+
+	PasswordFilename string
 }
 
 func (r *ReadBasicAuthFromDisk) Read() (*BasicAuthCredentials, error) {
@@ -31,13 +35,23 @@ func (r *ReadBasicAuthFromDisk) Read() (*BasicAuthCredentials, error) {
 		return nil, fmt.Errorf("invalid SecretMountPath specified for reading secrets")
 	}
 
-	userPath := path.Join(r.SecretMountPath, "basic-auth-user")
+	userKey := "basic-auth-user"
+	if len(r.UserFilename) > 0 {
+		userKey = r.UserFilename
+	}
+
+	passwordKey := "basic-auth-password"
+	if len(r.PasswordFilename) > 0 {
+		passwordKey = r.PasswordFilename
+	}
+
+	userPath := path.Join(r.SecretMountPath, userKey)
 	user, userErr := ioutil.ReadFile(userPath)
 	if userErr != nil {
 		return nil, fmt.Errorf("unable to load %s", userPath)
 	}
 
-	userPassword := path.Join(r.SecretMountPath, "basic-auth-password")
+	userPassword := path.Join(r.SecretMountPath, passwordKey)
 	password, passErr := ioutil.ReadFile(userPassword)
 	if passErr != nil {
 		return nil, fmt.Errorf("Unable to load %s", userPassword)