README
¶
Luna
Alice inspired chaining for Fasthttp(https://github.com/valyala/fasthttp).
Luna provides a way to chain
In short, it transforms
Middleware1(Middleware2(Middleware3(App)))
to
luna.New(Middleware1, Middleware2, Middleware3).Then(App)
Documentation
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Index ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
This section is empty.
Types ¶
type Chain ¶
type Chain struct {
// contains filtered or unexported fields
}
Chain acts as a list of fasthttp.RequestHandler constructors. Chain is effectively immutable: once created, it will always hold the same set of constructors in the same order.
func New ¶
func New(constructors ...Constructor) Chain
New creates a new chain, memorizing the given list of middleware constructors. New serves no other function, constructors are only called upon a call to Then().
func (Chain) Append ¶
func (c Chain) Append(constructors ...Constructor) Chain
Append extends a chain, adding the specified constructors as the last ones in the request flow.
Append returns a new chain, leaving the original one untouched.
stdChain := alice.New(m1, m2) extChain := stdChain.Append(m3, m4) // requests in stdChain go m1 -> m2 // requests in extChain go m1 -> m2 -> m3 -> m4
func (Chain) Extend ¶
Extend extends a chain by adding the specified chain as the last one in the request flow.
Extend returns a new chain, leaving the original one untouched.
stdChain := alice.New(m1, m2) ext1Chain := alice.New(m3, m4) ext2Chain := stdChain.Extend(ext1Chain) // requests in stdChain go m1 -> m2 // requests in ext1Chain go m3 -> m4 // requests in ext2Chain go m1 -> m2 -> m3 -> m4
func (Chain) Then ¶
func (c Chain) Then(h fasthttp.RequestHandler) fasthttp.RequestHandler
Then chains the middleware and returns the final fasthttp.RequestHandler.
New(m1, m2, m3).Then(h)
is equivalent to:
m1(m2(m3(h)))
When the request comes in, it will be passed to m1, then m2, then m3 and finally, the given handler (assuming every middleware calls the following one).
A chain can be safely reused by calling Then() several times.
stdStack := alice.New(ratelimitHandler, csrfHandler) indexPipe = stdStack.Then(indexHandler) authPipe = stdStack.Then(authHandler)
Note that constructors are called on every call to Then() and thus several instances of the same middleware will be created when a chain is reused in this way. For proper middleware, this should cause no problems.
type Constructor ¶
type Constructor func(fasthttp.RequestHandler) fasthttp.RequestHandler
A constructor for a piece of middleware. Some middleware use this constructor out of the box, so in most cases you can just pass somepackage.New
Source Files