forked from vaniila/hyper
/
route.go
289 lines (256 loc) · 6.07 KB
/
route.go
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package router
import (
"fmt"
"log"
)
type router struct {
pat string
aliases []string
name string
method string
routes []Route
namespace bool
ws bool
http bool
documentation string
summary string
params []Param
vref int
vidx map[string]int
memory int64
middleware HandlerFuncs
handler HandlerFunc
catch HandlerFunc
models []Model
}
var tmplValueIndex = "%v#%v"
var warningDependsOnSelf = `
Parameter [%v#%v] cannot depend on itself.
`
var warningDependsOnNil = `
Parameter [%v#%v] depends on [%v#%v], yet the parameter does not exist.
It could also caused by invalid parameter(s) ordering. Simply put parameter
[%v#%v] before parameter [%v#%v].
`
var warningNonNamespace = `
"Route %s is not a namespace, you are only allowed to attach route(s) to namespaces."
`
var warningNoBodyAllowed = `
"Route [%s] %s does not accept any request body parameter [%v]"
`
// response struct
type model struct {
code int
structure interface{}
}
func (v *router) buildValueIndexes(ps []Param) {
for _, param := range ps {
conf := param.Config()
switch conf.Type() {
case ParamOneOf:
v.buildValueIndexes(conf.OneOf())
default:
v.vidx[fmt.Sprintf(tmplValueIndex, param.Config().Type(), param.Config().Name())] = v.vref
v.vref++
if deps := conf.DependsOn(); len(deps) > 0 {
for _, dep := range deps {
depconf := dep.Config()
if depconf.Type() == conf.Type() && depconf.Name() == conf.Name() {
log.Fatalf(warningDependsOnSelf, depconf.Type(), depconf.Name())
}
if _, ok := v.vidx[fmt.Sprintf(tmplValueIndex, depconf.Type(), depconf.Name())]; !ok {
log.Fatalf(warningDependsOnNil, conf.Type(), conf.Name(), depconf.Type(), depconf.Name(), depconf.Type(), depconf.Name(), conf.Type(), conf.Name())
}
}
}
}
}
}
func (v *router) add(pat, method string) Route {
// pass down params
var params []Param
if l := len(v.params); l > 0 {
for _, param := range v.params {
params = append(params, param)
}
}
// pass down middleware
var middleware HandlerFuncs
if l := len(v.middleware); l > 0 {
for _, handler := range v.middleware {
middleware = append(middleware, handler)
}
}
r := &router{
pat: pat,
method: method,
ws: true,
http: true,
params: params,
vref: 0,
vidx: make(map[string]int),
memory: v.memory,
middleware: middleware,
}
v.routes = append(v.routes, r)
return r
}
func (v *router) Get(pat string) Route {
return v.add(pat, "GET")
}
func (v *router) Head(pat string) Route {
return v.add(pat, "HEAD")
}
func (v *router) Options(pat string) Route {
return v.add(pat, "OPTIONS")
}
func (v *router) Post(pat string) Route {
return v.add(pat, "POST")
}
func (v *router) Put(pat string) Route {
return v.add(pat, "PUT")
}
func (v *router) Patch(pat string) Route {
return v.add(pat, "PATCH")
}
func (v *router) Delete(pat string) Route {
return v.add(pat, "DELETE")
}
func (v *router) Namespace(pat string) Route {
if !v.namespace {
log.Fatalf(warningNonNamespace, v.pat)
}
// pass down params
var params []Param
if l := len(v.params); l > 0 {
for _, param := range v.params {
params = append(params, param)
}
}
// pass down middleware
var middleware HandlerFuncs
if l := len(v.middleware); l > 0 {
for _, handler := range v.middleware {
middleware = append(middleware, handler)
}
}
r := &router{
pat: pat,
namespace: true,
params: params,
vref: 0,
vidx: make(map[string]int),
memory: v.memory,
middleware: middleware,
}
v.routes = append(v.routes, r)
return r
}
func (v *router) Alias(aliases ...string) Route {
for _, alias := range aliases {
v.aliases = append(v.aliases, alias)
}
return v
}
func (v *router) Name(s string) Route {
v.name = s
return v
}
func (v *router) Summary(s string) Route {
v.summary = s
return v
}
func (v *router) Doc(s string) Route {
v.documentation = s
return v
}
func (v *router) Params(ps ...Param) Route {
var params = make(map[string]int)
for i, param := range v.params {
params[fmt.Sprintf("%v#%v", param.Config().Type(), param.Config().Name())] = i
}
for _, param := range ps {
if param != nil {
switch v.method {
case "GET", "HEAD", "DELETE":
if param.Config().Type() == ParamBody {
log.Fatalf(warningNoBodyAllowed, v.method, v.pat, param.Config().Name())
}
}
switch i, ok := params[fmt.Sprintf("%v#%v", param.Config().Type(), param.Config().Name())]; {
case ok:
v.params[i] = param
default:
v.params = append(v.params, param)
}
}
}
v.buildValueIndexes(v.params)
return v
}
func (v *router) ClearParams() Route {
v.params = make([]Param, 0)
return v
}
func (v *router) MaxMemory(m int64) Route {
v.memory = m
return v
}
func (v *router) Handle(f HandlerFunc) Route {
if v.handler != nil {
log.Fatalf("Route %s can only have one response handler", v.pat)
}
v.handler = f
return v
}
func (v *router) Catch(f HandlerFunc) Route {
if v.catch != nil {
log.Fatalf("Route %s can only have one catch handler", v.pat)
}
v.catch = f
return v
}
func (v *router) Middleware(fs ...HandlerFunc) Route {
for _, f := range fs {
if f != nil {
v.middleware = append(v.middleware, f)
}
}
return v
}
func (v *router) ClearMiddleware() Route {
v.middleware = make(HandlerFuncs, 0)
return v
}
func (v *router) Websocket(b bool) Route {
v.ws = b
return v
}
func (v *router) HTTP(b bool) Route {
v.http = b
return v
}
func (v *router) Models(ms ...Model) Route {
return v
}
func (v *router) Config() RouteConfig {
return &config{
pat: v.pat,
aliases: v.aliases,
name: v.name,
method: v.method,
routes: v.routes,
namespace: v.namespace,
ws: v.ws,
http: v.http,
documentation: v.documentation,
summary: v.summary,
params: v.params,
vidx: v.vidx,
memory: v.memory,
middleware: v.middleware,
handler: v.handler,
catch: v.catch,
models: v.models,
}
}