Bump version to 5.11.0

vendor/github.com/microsoft/go-mssqldb/accesstokenconnector.go

@@ -0,0 +1,31 @@
+// +build go1.10
+
+package mssql
+
+import (
+	"context"
+	"database/sql/driver"
+	"errors"
+)
+
+// NewAccessTokenConnector creates a new connector from a DSN and a token provider.
+// The token provider func will be called when a new connection is requested and should return a valid access token.
+// The returned connector may be used with sql.OpenDB.
+func NewAccessTokenConnector(dsn string, tokenProvider func() (string, error)) (driver.Connector, error) {
+	if tokenProvider == nil {
+		return nil, errors.New("mssql: tokenProvider cannot be nil")
+	}
+
+	conn, err := NewConnector(dsn)
+	if err != nil {
+		return nil, err
+	}
+
+	conn.fedAuthRequired = true
+	conn.fedAuthLibrary = FedAuthLibrarySecurityToken
+	conn.securityTokenProvider = func(ctx context.Context) (string, error) {
+		return tokenProvider()
+	}
+
+	return conn, nil
+}