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zeekayandHanzo Dev
5f71d2496b
App, Group, Operation. A group is a prefix and what holds under it, an operation
is one typed route declared there, and the verb methods are generic methods —
which Go 1.27 allows on a concrete type and still refuses on an interface. So In
and Out come from the handler and the caller writes no type arguments:
users := app.Group("/v1/users")
users.Post("/", api.Create)
mint := users.Group("/mint").With(middleware.Mint(gate))
mint.Post("/deposit", api.Deposit)
A Group is a CLOSED HANDLE: two unexported fields, and no method that hands back
the app, the parent or the fiber underneath. A subsystem given the group at its
own prefix cannot reach above it, so confinement is a property of the type
instead of a rule something has to police — which is what a host needs in order
to hand out a bounded surface and know what comes back.
That is bought by giving up the router interface, deliberately. Router and
OpTarget are gone, and with them the ability to implement a route table outside
this package: a decorator is no longer a router, a gate is middleware on a group,
and a bound is a path. The five package-level verb functions go the same way —
a registration is a method on the thing it registers into.
Raw carries what is not a typed operation: a stream, an upgrade, a probe, a
foreign subtree. It names its method, and it is the longer spelling because
opting out of the typed model is the exception and should read like one.
Co-authored-by: Hanzo Dev <[email protected]>
64 lines
1.9 KiB
Go
64 lines
1.9 KiB
Go
// migrate-from-beego example — beego → zip migration via http.Handler
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// adapter. beego.BeeApp exposes Handlers as an http.Handler-compatible
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// surface; the same AdaptNetHTTP adapter that fronted chi handles beego too.
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//
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// In a real port:
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//
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// import (
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// "github.com/beego/beego/v2/server/web"
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// "github.com/zap-proto/zip"
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// )
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//
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// beeApp := web.NewHttpSever() // your existing beego app
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// zipApp := zip.New(zip.Config{AppName: "iam"})
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// zipApp.Group("/legacy/iam").All("/*", zip.AdaptNetHTTP(beeApp.Handlers))
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//
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// This example uses a stand-in http.Handler so the file builds without
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// pulling beego — same adapter pattern in either case.
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//
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// The adapted subtree is a wildcard route and registers no operation, so nothing
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// behind /legacy/iam is in the OpenAPI document, the MCP tool list, the CLI or
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// the call plane. New work goes in as a TYPED op, and a native route added later
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// wins by specificity — so the legacy tree shrinks one op at a time.
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package main
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import (
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"context"
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"log"
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"net/http"
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"github.com/zap-proto/zip"
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)
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type beegoStub struct{}
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func (beegoStub) ServeHTTP(w http.ResponseWriter, _ *http.Request) {
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w.Header().Set("Content-Type", "application/json")
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_, _ = w.Write([]byte(`{"legacy_beego":true}`))
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}
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// Health is what the probe answers.
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type Health struct {
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Status string `json:"status"`
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}
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// Nothing is an operation that takes no input.
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type Nothing struct{}
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// Healthz reports whether IAM is up.
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func healthz(context.Context, *Nothing) (*Health, error) {
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return &Health{Status: "ok"}, nil
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}
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func main() {
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app := zip.New(zip.Config{AppName: "migrate-from-beego"})
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// New native zip routes, typed:
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app.Get("/v1/iam/healthz", healthz)
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// Legacy beego app under /legacy/iam — one adapted wildcard route:
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app.Group("/legacy/iam").Raw(zip.MethodAll, "/*", zip.AdaptNetHTTP(beegoStub{}))
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log.Fatal(app.Listen("http://:8080"))
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}
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