fix(vault): vault_format support for online restore and gql (#5745)

(cherry picked from commit 13f630b)

graphql/admin/endpoints_ee.go

@@ -78,7 +78,7 @@ const adminTypes = `
 
 		"""
 		Vault server address where the key is stored. This server must be accessible
-		by all alphas in the group.
+		by all alphas in the group. Default "http://localhost:8200".
 		"""
 		vaultAddr: String
 
@@ -93,15 +93,20 @@ const adminTypes = `
 		vaultSecretIDFile: String
 
 		"""
-		Vault kv store path where the key lives.
+		Vault kv store path where the key lives. Default "secret/data/dgraph".
 		"""
 		vaultPath: String
 
 		"""
-		Vault kv store field whose value is the key.
+		Vault kv store field whose value is the key. Default "enc_key".
 		"""
 		vaultField: String
 
+		"""
+		Vault kv store field's format. Must be "base64" or "raw". Default "base64".
+		"""
+		vaultFormat: String
+
 		"""
 		Access key credential for the destination.
 		"""

graphql/admin/restore.go

@@ -39,6 +39,7 @@ type restoreInput struct {
 	VaultSecretIDFile string
 	VaultPath         string
 	VaultField        string
+	VaultFormat       string
 }
 
 func resolveRestore(ctx context.Context, m schema.Mutation) (*resolve.Resolved, bool) {
@@ -61,6 +62,7 @@ func resolveRestore(ctx context.Context, m schema.Mutation) (*resolve.Resolved,
 		VaultSecretidFile: input.VaultSecretIDFile,
 		VaultPath:         input.VaultPath,
 		VaultField:        input.VaultField,
+		VaultFormat:	   input.VaultFormat,
 	}
 	err = worker.ProcessRestoreRequest(context.Background(), &req)
 	if err != nil {

protos/pb.proto

@@ -285,6 +285,7 @@ message RestoreRequest {
 	string vault_secretid_file = 12;
 	string vault_path = 13;
 	string vault_field = 14;
+	string vault_format = 15;
 }
 
 message Proposal {