Merge pull request #3364 from jwhonce/wip/logrus

Vendor in logrus v1.4.2

1 files changed, 15 insertions, 3 deletions

diff --git a/vendor/github.com/sirupsen/logrus/alt_exit.go b/vendor/github.com/sirupsen/logrus/alt_exit.go
index 8af90637a..8fd189e1c 100644
--- a/vendor/github.com/sirupsen/logrus/alt_exit.go
+++ b/vendor/github.com/sirupsen/logrus/alt_exit.go
@@ -51,9 +51,9 @@ func Exit(code int) {
 	os.Exit(code)
 }
 
-// RegisterExitHandler adds a Logrus Exit handler, call logrus.Exit to invoke
-// all handlers. The handlers will also be invoked when any Fatal log entry is
-// made.
+// RegisterExitHandler appends a Logrus Exit handler to the list of handlers,
+// call logrus.Exit to invoke all handlers. The handlers will also be invoked when
+// any Fatal log entry is made.
 //
 // This method is useful when a caller wishes to use logrus to log a fatal
 // message but also needs to gracefully shutdown. An example usecase could be
@@ -62,3 +62,15 @@ func Exit(code int) {
 func RegisterExitHandler(handler func()) {
 	handlers = append(handlers, handler)
 }
+
+// DeferExitHandler prepends a Logrus Exit handler to the list of handlers,
+// call logrus.Exit to invoke all handlers. The handlers will also be invoked when
+// any Fatal log entry is made.
+//
+// This method is useful when a caller wishes to use logrus to log a fatal
+// message but also needs to gracefully shutdown. An example usecase could be
+// closing database connections, or sending a alert that the application is
+// closing.
+func DeferExitHandler(handler func()) {
+	handlers = append([]func(){handler}, handlers...)
+}