From e388517d21a6b73573e14c89e2c7ae4d75469e5a Mon Sep 17 00:00:00 2001 From: xiekeyang Date: Wed, 30 Mar 2016 17:35:22 +0800 Subject: [PATCH] type judgment in context Signed-off-by: xiekeyang --- context/util.go | 16 ++++------------ 1 file changed, 4 insertions(+), 12 deletions(-) diff --git a/context/util.go b/context/util.go index 299edc004..cb9ef52e3 100644 --- a/context/util.go +++ b/context/util.go @@ -8,25 +8,17 @@ import ( // since that time. If the key is not found, the value returned will be zero. // This is helpful when inferring metrics related to context execution times. func Since(ctx Context, key interface{}) time.Duration { - startedAtI := ctx.Value(key) - if startedAtI != nil { - if startedAt, ok := startedAtI.(time.Time); ok { - return time.Since(startedAt) - } + if startedAt, ok := ctx.Value(key).(time.Time); ok { + return time.Since(startedAt) } - return 0 } // GetStringValue returns a string value from the context. The empty string // will be returned if not found. func GetStringValue(ctx Context, key interface{}) (value string) { - stringi := ctx.Value(key) - if stringi != nil { - if valuev, ok := stringi.(string); ok { - value = valuev - } + if valuev, ok := ctx.Value(key).(string); ok { + value = valuev } - return value }