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22 lines
541 B
22 lines
541 B
4 years ago
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package middleware
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import (
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"context"
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)
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// Handler defines the handler invoked by Middleware.
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type Handler func(ctx context.Context, req interface{}) (interface{}, error)
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// Middleware is HTTP/gRPC transport middleware.
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type Middleware func(Handler) Handler
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// Chain returns a Middleware that specifies the chained handler for endpoint.
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func Chain(outer Middleware, others ...Middleware) Middleware {
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return func(next Handler) Handler {
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for i := len(others) - 1; i >= 0; i-- {
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next = others[i](next)
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}
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return outer(next)
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}
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}
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