Limit the number of goroutines used for the update of ingress status

vendor/gopkg.in/go-playground/pool.v3/errors.go

@@ -0,0 +1,37 @@
+package pool
+
+const (
+	errCancelled = "ERROR: Work Unit Cancelled"
+	errRecovery  = "ERROR: Work Unit failed due to a recoverable error: '%v'\n, Stack Trace:\n %s"
+	errClosed    = "ERROR: Work Unit added/run after the pool had been closed or cancelled"
+)
+
+// ErrRecovery contains the error when a consumer goroutine needed to be recovers
+type ErrRecovery struct {
+	s string
+}
+
+// Error prints recovery error
+func (e *ErrRecovery) Error() string {
+	return e.s
+}
+
+// ErrPoolClosed is the error returned to all work units that may have been in or added to the pool after it's closing.
+type ErrPoolClosed struct {
+	s string
+}
+
+// Error prints Work Unit Close error
+func (e *ErrPoolClosed) Error() string {
+	return e.s
+}
+
+// ErrCancelled is the error returned to a Work Unit when it has been cancelled.
+type ErrCancelled struct {
+	s string
+}
+
+// Error prints Work Unit Cancellation error
+func (e *ErrCancelled) Error() string {
+	return e.s
+}