Rename to Merge
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20c6c36bc4
commit
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@ -12,6 +12,7 @@ type metaKey struct{}
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// from Transport headers.
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// from Transport headers.
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type Metadata map[string]string
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type Metadata map[string]string
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// Copy makes a copy of the metadata
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func Copy(md Metadata) Metadata {
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func Copy(md Metadata) Metadata {
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cmd := make(Metadata)
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cmd := make(Metadata)
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for k, v := range md {
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for k, v := range md {
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@ -20,16 +21,19 @@ func Copy(md Metadata) Metadata {
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return cmd
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return cmd
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}
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}
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// FromContext returns metadata from the given context
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func FromContext(ctx context.Context) (Metadata, bool) {
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func FromContext(ctx context.Context) (Metadata, bool) {
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md, ok := ctx.Value(metaKey{}).(Metadata)
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md, ok := ctx.Value(metaKey{}).(Metadata)
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return md, ok
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return md, ok
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}
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}
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// NewContext creates a new context with the given metadata
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func NewContext(ctx context.Context, md Metadata) context.Context {
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func NewContext(ctx context.Context, md Metadata) context.Context {
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return context.WithValue(ctx, metaKey{}, md)
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return context.WithValue(ctx, metaKey{}, md)
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}
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}
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func AppendContext(ctx context.Context, patchMd Metadata, overwrite bool) context.Context {
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// MergeContext merges metadata to existing metadata, overwriting if specified
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func MergeContext(ctx context.Context, patchMd Metadata, overwrite bool) context.Context {
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md, _ := ctx.Value(metaKey{}).(Metadata)
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md, _ := ctx.Value(metaKey{}).(Metadata)
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cmd := make(Metadata)
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cmd := make(Metadata)
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for k, v := range md {
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for k, v := range md {
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