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router.go
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router.go
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package server
import (
"bytes"
"encoding/gob"
"github.com/jmartin82/mmock/internal/config"
"github.com/jmartin82/mmock/pkg/mock"
"log"
"github.com/jmartin82/mmock/pkg/match"
)
//RequestResolver contains the functions to check the http request and return the matching mock.
type RequestResolver interface {
Resolve(req *mock.Request) (*mock.Definition, *match.Result)
}
//NewRouter returns a pointer to new Router
func NewRouter(mapping config.Mapping, checker match.Matcher) *Router {
return &Router{
Mapping: mapping,
Checker: checker,
}
}
//Router checks http requesta and try to figure out what is the best mock for each one.
type Router struct {
Mapping config.Mapping
Checker match.Matcher
}
func (rr *Router) copy(src, dst *mock.Definition) {
var mod bytes.Buffer
enc := gob.NewEncoder(&mod)
dec := gob.NewDecoder(&mod)
err := enc.Encode(src)
if err != nil {
log.Fatal("encode error:", err)
}
err = dec.Decode(dst)
if err != nil {
log.Fatal("decode error:", err)
}
}
//Route checks the request with all available mock definitions and return the matching mock for it.
func (rr *Router) Resolve(req *mock.Request) (*mock.Definition, *match.Result) {
mocks := rr.Mapping.List()
mLog := &match.Result{Found: false}
mLog.Errors = make([]match.Error, 0, len(mocks))
for _, m := range mocks {
r, err := rr.Checker.Match(req, &m, true)
if r {
//we return a copy of it, not the config itself because we will working on it.
md := mock.Definition{}
rr.copy(&m, &md)
mLog.Found = true
mLog.URI = m.URI
return &md, mLog
}
mLog.Errors = append(mLog.Errors, match.Error{URI: m.URI, Reason: err.Error()})
if err != match.ErrPathNotMatch {
log.Printf("Discarding mock: %s Reason: %s\n", m.URI, err.Error())
}
}
return getNotFoundResult(), mLog
}
func getNotFoundResult() *mock.Definition {
return &mock.Definition{Response: mock.Response{StatusCode: 404}}
}