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Merge pull request #108 from unistack-org/improve
small improve
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,34 @@ | ||
package router | ||
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import ( | ||
"context" | ||
) | ||
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type routerKey struct{} | ||
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// FromContext get router from context | ||
func FromContext(ctx context.Context) (Router, bool) { | ||
if ctx == nil { | ||
return nil, false | ||
} | ||
c, ok := ctx.Value(routerKey{}).(Router) | ||
return c, ok | ||
} | ||
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// NewContext put router in context | ||
func NewContext(ctx context.Context, c Router) context.Context { | ||
if ctx == nil { | ||
ctx = context.Background() | ||
} | ||
return context.WithValue(ctx, routerKey{}, c) | ||
} | ||
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// SetOption returns a function to setup a context with given value | ||
func SetOption(k, v interface{}) Option { | ||
return func(o *Options) { | ||
if o.Context == nil { | ||
o.Context = context.Background() | ||
} | ||
o.Context = context.WithValue(o.Context, k, v) | ||
} | ||
} |
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