Manually print the stack-trace when --logtostderr is enabled
Glog doesn't actually print out the stack traces for all goroutines,
when --logtostderr is enabled, the same way it normally does.  This
makes debugging more complex in some cases.  So, we'll manually do it.
package contract
import (
+ "flag"
+ "fmt"
+ "os"
+ "runtime/debug"
+
"github.com/golang/glog"
)
// failfast logs and panics the process in a way that is friendly to debugging.
func failfast(msg string) {
+ v := flag.Lookup("logtostderr").Value
+ if g, isgettable := v.(flag.Getter); isgettable {
+ if enabled := g.Get().(bool); enabled {
+ // Print the stack to stderr anytime glog verbose logging is enabled, since glog won't.
+ fmt.Fprintf(os.Stderr, "fatal: %v\n", msg)
+ debug.PrintStack()
+ }
+ }
glog.Fatal(msg)
}
