mirror of
https://github.com/go-micro/go-micro.git
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api/router/registry: extract path based parameters from url to req (#1530)
* api/router/registry: extract path based parameters from url to req * api/handler/rpc: fix empty body request parsing * bundle grpc-gateway util funcs Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
This commit is contained in:
Vasiliy Tolstov
GitHub
parent
9961ebb46e
commit
62cedf64da
@ -208,7 +208,6 @@ func (h *rpcHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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&request,
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client.WithContentType(ct),
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)
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// make the call
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if err := c.Call(cx, req, &response, client.WithSelectOption(so)); err != nil {
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writeError(w, r, err)
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@ -6,16 +6,25 @@ import (
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"fmt"
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"net/http"
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"regexp"
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"strings"
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"sync"
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"time"
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"github.com/micro/go-micro/v2/api"
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"github.com/micro/go-micro/v2/api/router"
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"github.com/micro/go-micro/v2/api/router/util"
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"github.com/micro/go-micro/v2/logger"
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"github.com/micro/go-micro/v2/metadata"
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"github.com/micro/go-micro/v2/registry"
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"github.com/micro/go-micro/v2/registry/cache"
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)
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// endpoint struct, that holds compiled pcre
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type endpoint struct {
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hostregs []*regexp.Regexp
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pathregs []util.Pattern
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}
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// router is the default router
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type registryRouter struct {
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exit chan bool
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@ -26,6 +35,8 @@ type registryRouter struct {
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sync.RWMutex
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eps map[string]*api.Service
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// compiled regexp for host and path
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ceps map[string]*endpoint
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}
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func (r *registryRouter) isClosed() bool {
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@ -67,6 +78,7 @@ func (r *registryRouter) refresh() {
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}
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// refresh list in 10 minutes... cruft
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// use registry watching
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select {
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case <-time.After(time.Minute * 10):
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case <-r.exit:
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@ -109,11 +121,11 @@ func (r *registryRouter) store(services []*registry.Service) {
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names[service.Name] = true
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// map per endpoint
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for _, endpoint := range service.Endpoints {
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for _, sep := range service.Endpoints {
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// create a key service:endpoint_name
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key := fmt.Sprintf("%s:%s", service.Name, endpoint.Name)
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key := fmt.Sprintf("%s.%s", service.Name, sep.Name)
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// decode endpoint
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end := api.Decode(endpoint.Metadata)
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end := api.Decode(sep.Metadata)
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// if we got nothing skip
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if err := api.Validate(end); err != nil {
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@ -154,8 +166,44 @@ func (r *registryRouter) store(services []*registry.Service) {
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}
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// now set the eps we have
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for name, endpoint := range eps {
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r.eps[name] = endpoint
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for name, ep := range eps {
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r.eps[name] = ep
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cep := &endpoint{}
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for _, h := range ep.Endpoint.Host {
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if h == "" || h == "*" {
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continue
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}
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hostreg, err := regexp.CompilePOSIX(h)
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if err != nil {
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if logger.V(logger.TraceLevel, logger.DefaultLogger) {
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logger.Tracef("endpoint have invalid host regexp: %v", err)
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}
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continue
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}
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cep.hostregs = append(cep.hostregs, hostreg)
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}
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for _, p := range ep.Endpoint.Path {
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rule, err := util.Parse(p)
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if err != nil {
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if logger.V(logger.TraceLevel, logger.DefaultLogger) {
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logger.Tracef("endpoint have invalid path pattern: %v", err)
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}
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continue
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}
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tpl := rule.Compile()
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pathreg, err := util.NewPattern(tpl.Version, tpl.OpCodes, tpl.Pool, "")
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if err != nil {
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if logger.V(logger.TraceLevel, logger.DefaultLogger) {
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logger.Tracef("endpoint have invalid path pattern: %v", err)
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}
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continue
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}
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cep.pathregs = append(cep.pathregs, pathreg)
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}
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r.ceps[name] = cep
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}
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}
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@ -239,60 +287,89 @@ func (r *registryRouter) Endpoint(req *http.Request) (*api.Service, error) {
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r.RLock()
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defer r.RUnlock()
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var idx int
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if len(req.URL.Path) > 0 && req.URL.Path != "/" {
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idx = 1
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}
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path := strings.Split(req.URL.Path[idx:], "/")
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// use the first match
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// TODO: weighted matching
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for _, e := range r.eps {
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for n, e := range r.eps {
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cep, ok := r.ceps[n]
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if !ok {
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continue
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}
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ep := e.Endpoint
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// match
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var pathMatch, hostMatch, methodMatch bool
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// 1. try method GET, POST, PUT, etc
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// 2. try host example.com, foobar.com, etc
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// 3. try path /foo/bar, /bar/baz, etc
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// 1. try match method
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var mMatch, hMatch, pMatch bool
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// 1. try method
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methodLoop:
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for _, m := range ep.Method {
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if req.Method == m {
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methodMatch = true
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break
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if m == req.Method {
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mMatch = true
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break methodLoop
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}
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}
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// no match on method pass
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if len(ep.Method) > 0 && !methodMatch {
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if !mMatch {
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continue
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}
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// 2. try match host
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for _, h := range ep.Host {
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if req.Host == h {
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hostMatch = true
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break
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}
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if logger.V(logger.DebugLevel, logger.DefaultLogger) {
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logger.Debugf("api method match %s", req.Method)
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}
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// no match on host pass
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if len(ep.Host) > 0 && !hostMatch {
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// 2. try host
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if len(ep.Host) == 0 {
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hMatch = true
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} else {
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hostLoop:
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for idx, h := range ep.Host {
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if h == "" || h == "*" {
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hMatch = true
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break hostLoop
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} else {
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if cep.hostregs[idx].MatchString(req.URL.Host) {
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hMatch = true
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break hostLoop
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}
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}
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}
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}
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if !hMatch {
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continue
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}
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// 3. try match paths
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for _, p := range ep.Path {
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re, err := regexp.CompilePOSIX(p)
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if err == nil && re.MatchString(req.URL.Path) {
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pathMatch = true
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break
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}
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if logger.V(logger.DebugLevel, logger.DefaultLogger) {
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logger.Debugf("api host match %s", req.URL.Host)
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}
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// no match pass
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if len(ep.Path) > 0 && !pathMatch {
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// 3. try path
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// 3. try path
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pathLoop:
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for _, pathreg := range cep.pathregs {
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matches, err := pathreg.Match(path, "")
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if err != nil {
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if logger.V(logger.DebugLevel, logger.DefaultLogger) {
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logger.Debugf("api path not match %s != %v", path, pathreg)
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}
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continue
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}
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pMatch = true
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ctx := req.Context()
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md, ok := metadata.FromContext(ctx)
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if !ok {
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md = make(metadata.Metadata)
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}
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for k, v := range matches {
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md[fmt.Sprintf("x-api-field-%s", k)] = v
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}
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md["x-api-body"] = ep.Body
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*req = *req.Clone(metadata.NewContext(ctx, md))
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break pathLoop
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}
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if !pMatch {
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continue
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}
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// TODO: Percentage traffic
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// we got here, so its a match
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return e, nil
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}
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@ -377,6 +454,7 @@ func newRouter(opts ...router.Option) *registryRouter {
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opts: options,
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rc: cache.New(options.Registry),
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eps: make(map[string]*api.Service),
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ceps: make(map[string]*endpoint),
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}
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go r.watch()
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go r.refresh()
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@ -1,136 +0,0 @@
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package registry
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import (
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"fmt"
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"net/http"
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"net/url"
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"testing"
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"github.com/micro/go-micro/v2/api"
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)
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func TestRouter(t *testing.T) {
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r := newRouter()
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compare := func(expect, got []string) bool {
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// no data to compare, return true
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if len(expect) == 0 && len(got) == 0 {
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return true
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}
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// no data expected but got some return false
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if len(expect) == 0 && len(got) > 0 {
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return false
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}
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// compare expected with what we got
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for _, e := range expect {
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var seen bool
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for _, g := range got {
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if e == g {
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seen = true
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break
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}
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}
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if !seen {
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return false
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}
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}
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// we're done, return true
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return true
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}
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testData := []struct {
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e *api.Endpoint
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r *http.Request
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m bool
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}{
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{
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e: &api.Endpoint{
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Name: "Foo.Bar",
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Host: []string{"example.com"},
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Method: []string{"GET"},
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Path: []string{"/foo"},
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},
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r: &http.Request{
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Host: "example.com",
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Method: "GET",
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URL: &url.URL{
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Path: "/foo",
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},
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},
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m: true,
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},
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{
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e: &api.Endpoint{
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Name: "Bar.Baz",
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Host: []string{"example.com", "foo.com"},
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Method: []string{"GET", "POST"},
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Path: []string{"/foo/bar"},
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},
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r: &http.Request{
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Host: "foo.com",
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Method: "POST",
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URL: &url.URL{
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Path: "/foo/bar",
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},
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},
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m: true,
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},
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{
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e: &api.Endpoint{
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Name: "Test.Cruft",
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Host: []string{"example.com", "foo.com"},
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Method: []string{"GET", "POST"},
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Path: []string{"/xyz"},
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},
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r: &http.Request{
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Host: "fail.com",
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Method: "DELETE",
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URL: &url.URL{
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Path: "/test/fail",
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},
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},
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m: false,
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},
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}
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for _, d := range testData {
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key := fmt.Sprintf("%s:%s", "test.service", d.e.Name)
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r.eps[key] = &api.Service{
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Endpoint: d.e,
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}
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}
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for _, d := range testData {
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e, err := r.Endpoint(d.r)
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if d.m && err != nil {
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t.Fatalf("expected match, got %v", err)
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}
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if !d.m && err == nil {
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t.Fatal("expected error got match")
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}
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// skip testing the non match
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if !d.m {
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continue
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}
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ep := e.Endpoint
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// test the match
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if d.e.Name != ep.Name {
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t.Fatalf("expected %v got %v", d.e.Name, ep.Name)
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}
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if ok := compare(d.e.Method, ep.Method); !ok {
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t.Fatalf("expected %v got %v", d.e.Method, ep.Method)
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}
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if ok := compare(d.e.Path, ep.Path); !ok {
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t.Fatalf("expected %v got %v", d.e.Path, ep.Path)
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}
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if ok := compare(d.e.Host, ep.Host); !ok {
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t.Fatalf("expected %v got %v", d.e.Host, ep.Host)
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}
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}
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}
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@ -1,4 +1,4 @@
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package api_test
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package router_test
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import (
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"context"
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@ -13,6 +13,7 @@ import (
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"github.com/micro/go-micro/v2/api/handler"
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"github.com/micro/go-micro/v2/api/handler/rpc"
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"github.com/micro/go-micro/v2/api/router"
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rregistry "github.com/micro/go-micro/v2/api/router/registry"
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rstatic "github.com/micro/go-micro/v2/api/router/static"
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"github.com/micro/go-micro/v2/client"
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gcli "github.com/micro/go-micro/v2/client/grpc"
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@ -29,11 +30,11 @@ type testServer struct {
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// TestHello implements helloworld.GreeterServer
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func (s *testServer) Call(ctx context.Context, req *pb.Request, rsp *pb.Response) error {
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rsp.Msg = "Hello " + req.Name
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rsp.Msg = "Hello " + req.Uuid
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return nil
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}
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func TestApiAndGRPC(t *testing.T) {
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func initial(t *testing.T) (server.Server, client.Client) {
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r := rmemory.NewRegistry()
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// create a new client
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@ -53,44 +54,17 @@ func TestApiAndGRPC(t *testing.T) {
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if err := s.Start(); err != nil {
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t.Fatalf("failed to start: %v", err)
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}
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defer s.Stop()
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// create a new router
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router := rstatic.NewRouter(
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router.WithHandler(rpc.Handler),
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router.WithRegistry(r),
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)
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return s, c
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}
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err := router.Register(&api.Endpoint{
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Name: "foo.Test.Call",
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Method: []string{"GET"},
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Path: []string{"/api/v0/test/call/{name}"},
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Handler: "rpc",
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})
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func check(addr string, t *testing.T) {
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req, err := http.NewRequest("POST", fmt.Sprintf("http://%s/api/v0/test/call/TEST", addr), nil)
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if err != nil {
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t.Fatal(err)
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t.Fatalf("Failed to created http.Request: %v", err)
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}
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hrpc := rpc.NewHandler(
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handler.WithClient(c),
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handler.WithRouter(router),
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)
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hsrv := &http.Server{
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Handler: hrpc,
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Addr: "127.0.0.1:6543",
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WriteTimeout: 15 * time.Second,
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ReadTimeout: 15 * time.Second,
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IdleTimeout: 20 * time.Second,
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MaxHeaderBytes: 1024 * 1024 * 1, // 1Mb
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}
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go func() {
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log.Println(hsrv.ListenAndServe())
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}()
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time.Sleep(1 * time.Second)
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rsp, err := http.Get(fmt.Sprintf("http://%s/api/v0/test/call/TEST", hsrv.Addr))
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req.Header.Set("Content-Type", "application/json")
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rsp, err := (&http.Client{}).Do(req)
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if err != nil {
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t.Fatalf("Failed to created http.Request: %v", err)
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}
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@ -106,3 +80,74 @@ func TestApiAndGRPC(t *testing.T) {
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t.Fatalf("invalid message received, parsing error %s != %s", buf, jsonMsg)
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}
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}
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|
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func TestRouterRegistry(t *testing.T) {
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s, c := initial(t)
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defer s.Stop()
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|
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router := rregistry.NewRouter(
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router.WithHandler(rpc.Handler),
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router.WithRegistry(s.Options().Registry),
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)
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hrpc := rpc.NewHandler(
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handler.WithClient(c),
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handler.WithRouter(router),
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)
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hsrv := &http.Server{
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Handler: hrpc,
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Addr: "127.0.0.1:6543",
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WriteTimeout: 15 * time.Second,
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ReadTimeout: 15 * time.Second,
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IdleTimeout: 20 * time.Second,
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MaxHeaderBytes: 1024 * 1024 * 1, // 1Mb
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}
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go func() {
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log.Println(hsrv.ListenAndServe())
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}()
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|
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defer hsrv.Close()
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time.Sleep(1 * time.Second)
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check(hsrv.Addr, t)
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}
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func TestRouterStatic(t *testing.T) {
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s, c := initial(t)
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defer s.Stop()
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|
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router := rstatic.NewRouter(
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router.WithHandler(rpc.Handler),
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router.WithRegistry(s.Options().Registry),
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)
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|
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err := router.Register(&api.Endpoint{
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Name: "foo.Test.Call",
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Method: []string{"POST"},
|
||||
Path: []string{"/api/v0/test/call/{uuid}"},
|
||||
Handler: "rpc",
|
||||
})
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
hrpc := rpc.NewHandler(
|
||||
handler.WithClient(c),
|
||||
handler.WithRouter(router),
|
||||
)
|
||||
hsrv := &http.Server{
|
||||
Handler: hrpc,
|
||||
Addr: "127.0.0.1:6543",
|
||||
WriteTimeout: 15 * time.Second,
|
||||
ReadTimeout: 15 * time.Second,
|
||||
IdleTimeout: 20 * time.Second,
|
||||
MaxHeaderBytes: 1024 * 1024 * 1, // 1Mb
|
||||
}
|
||||
|
||||
go func() {
|
||||
log.Println(hsrv.ListenAndServe())
|
||||
}()
|
||||
defer hsrv.Close()
|
||||
|
||||
time.Sleep(1 * time.Second)
|
||||
check(hsrv.Addr, t)
|
||||
}
|
||||
@ -8,20 +8,19 @@ import (
|
||||
"strings"
|
||||
"sync"
|
||||
|
||||
"github.com/grpc-ecosystem/grpc-gateway/protoc-gen-grpc-gateway/httprule"
|
||||
"github.com/grpc-ecosystem/grpc-gateway/runtime"
|
||||
"github.com/micro/go-micro/v2/api"
|
||||
"github.com/micro/go-micro/v2/api/router"
|
||||
"github.com/micro/go-micro/v2/api/router/util"
|
||||
"github.com/micro/go-micro/v2/logger"
|
||||
"github.com/micro/go-micro/v2/metadata"
|
||||
"github.com/micro/go-micro/v2/registry"
|
||||
util "github.com/micro/go-micro/v2/util/registry"
|
||||
rutil "github.com/micro/go-micro/v2/util/registry"
|
||||
)
|
||||
|
||||
type endpoint struct {
|
||||
apiep *api.Endpoint
|
||||
hostregs []*regexp.Regexp
|
||||
pathregs []runtime.Pattern
|
||||
pathregs []util.Pattern
|
||||
}
|
||||
|
||||
// router is the default router
|
||||
@ -93,7 +92,7 @@ func (r *staticRouter) Register(ep *api.Endpoint) error {
|
||||
return err
|
||||
}
|
||||
|
||||
var pathregs []runtime.Pattern
|
||||
var pathregs []util.Pattern
|
||||
var hostregs []*regexp.Regexp
|
||||
|
||||
for _, h := range ep.Host {
|
||||
@ -108,12 +107,12 @@ func (r *staticRouter) Register(ep *api.Endpoint) error {
|
||||
}
|
||||
|
||||
for _, p := range ep.Path {
|
||||
rule, err := httprule.Parse(p)
|
||||
rule, err := util.Parse(p)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
tpl := rule.Compile()
|
||||
pathreg, err := runtime.NewPattern(tpl.Version, tpl.OpCodes, tpl.Pool, "")
|
||||
pathreg, err := util.NewPattern(tpl.Version, tpl.OpCodes, tpl.Pool, "")
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
@ -164,7 +163,7 @@ func (r *staticRouter) Endpoint(req *http.Request) (*api.Service, error) {
|
||||
|
||||
// hack for stream endpoint
|
||||
if ep.apiep.Stream {
|
||||
svcs := util.Copy(services)
|
||||
svcs := rutil.Copy(services)
|
||||
for _, svc := range svcs {
|
||||
if len(svc.Endpoints) == 0 {
|
||||
e := ®istry.Endpoint{}
|
||||
|
||||
27
api/router/util/LICENSE.txt
Normal file
27
api/router/util/LICENSE.txt
Normal file
@ -0,0 +1,27 @@
|
||||
Copyright (c) 2015, Gengo, Inc.
|
||||
All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without modification,
|
||||
are permitted provided that the following conditions are met:
|
||||
|
||||
* Redistributions of source code must retain the above copyright notice,
|
||||
this list of conditions and the following disclaimer.
|
||||
|
||||
* Redistributions in binary form must reproduce the above copyright notice,
|
||||
this list of conditions and the following disclaimer in the documentation
|
||||
and/or other materials provided with the distribution.
|
||||
|
||||
* Neither the name of Gengo, Inc. nor the names of its
|
||||
contributors may be used to endorse or promote products derived from this
|
||||
software without specific prior written permission.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
|
||||
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
||||
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
|
||||
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
||||
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
||||
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
|
||||
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
||||
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
115
api/router/util/compile.go
Normal file
115
api/router/util/compile.go
Normal file
@ -0,0 +1,115 @@
|
||||
package util
|
||||
|
||||
// download from https://raw.githubusercontent.com/grpc-ecosystem/grpc-gateway/master/protoc-gen-grpc-gateway/httprule/compile.go
|
||||
|
||||
const (
|
||||
opcodeVersion = 1
|
||||
)
|
||||
|
||||
// Template is a compiled representation of path templates.
|
||||
type Template struct {
|
||||
// Version is the version number of the format.
|
||||
Version int
|
||||
// OpCodes is a sequence of operations.
|
||||
OpCodes []int
|
||||
// Pool is a constant pool
|
||||
Pool []string
|
||||
// Verb is a VERB part in the template.
|
||||
Verb string
|
||||
// Fields is a list of field paths bound in this template.
|
||||
Fields []string
|
||||
// Original template (example: /v1/a_bit_of_everything)
|
||||
Template string
|
||||
}
|
||||
|
||||
// Compiler compiles utilities representation of path templates into marshallable operations.
|
||||
// They can be unmarshalled by runtime.NewPattern.
|
||||
type Compiler interface {
|
||||
Compile() Template
|
||||
}
|
||||
|
||||
type op struct {
|
||||
// code is the opcode of the operation
|
||||
code OpCode
|
||||
|
||||
// str is a string operand of the code.
|
||||
// operand is ignored if str is not empty.
|
||||
str string
|
||||
|
||||
// operand is a numeric operand of the code.
|
||||
operand int
|
||||
}
|
||||
|
||||
func (w wildcard) compile() []op {
|
||||
return []op{
|
||||
{code: OpPush},
|
||||
}
|
||||
}
|
||||
|
||||
func (w deepWildcard) compile() []op {
|
||||
return []op{
|
||||
{code: OpPushM},
|
||||
}
|
||||
}
|
||||
|
||||
func (l literal) compile() []op {
|
||||
return []op{
|
||||
{
|
||||
code: OpLitPush,
|
||||
str: string(l),
|
||||
},
|
||||
}
|
||||
}
|
||||
|
||||
func (v variable) compile() []op {
|
||||
var ops []op
|
||||
for _, s := range v.segments {
|
||||
ops = append(ops, s.compile()...)
|
||||
}
|
||||
ops = append(ops, op{
|
||||
code: OpConcatN,
|
||||
operand: len(v.segments),
|
||||
}, op{
|
||||
code: OpCapture,
|
||||
str: v.path,
|
||||
})
|
||||
|
||||
return ops
|
||||
}
|
||||
|
||||
func (t template) Compile() Template {
|
||||
var rawOps []op
|
||||
for _, s := range t.segments {
|
||||
rawOps = append(rawOps, s.compile()...)
|
||||
}
|
||||
|
||||
var (
|
||||
ops []int
|
||||
pool []string
|
||||
fields []string
|
||||
)
|
||||
consts := make(map[string]int)
|
||||
for _, op := range rawOps {
|
||||
ops = append(ops, int(op.code))
|
||||
if op.str == "" {
|
||||
ops = append(ops, op.operand)
|
||||
} else {
|
||||
if _, ok := consts[op.str]; !ok {
|
||||
consts[op.str] = len(pool)
|
||||
pool = append(pool, op.str)
|
||||
}
|
||||
ops = append(ops, consts[op.str])
|
||||
}
|
||||
if op.code == OpCapture {
|
||||
fields = append(fields, op.str)
|
||||
}
|
||||
}
|
||||
return Template{
|
||||
Version: opcodeVersion,
|
||||
OpCodes: ops,
|
||||
Pool: pool,
|
||||
Verb: t.verb,
|
||||
Fields: fields,
|
||||
Template: t.template,
|
||||
}
|
||||
}
|
||||
122
api/router/util/compile_test.go
Normal file
122
api/router/util/compile_test.go
Normal file
@ -0,0 +1,122 @@
|
||||
package util
|
||||
|
||||
// download from https://raw.githubusercontent.com/grpc-ecosystem/grpc-gateway/master/protoc-gen-grpc-gateway/httprule/compile_test.go
|
||||
|
||||
import (
|
||||
"reflect"
|
||||
"testing"
|
||||
)
|
||||
|
||||
const (
|
||||
operandFiller = 0
|
||||
)
|
||||
|
||||
func TestCompile(t *testing.T) {
|
||||
for _, spec := range []struct {
|
||||
segs []segment
|
||||
verb string
|
||||
|
||||
ops []int
|
||||
pool []string
|
||||
fields []string
|
||||
}{
|
||||
{},
|
||||
{
|
||||
segs: []segment{
|
||||
wildcard{},
|
||||
},
|
||||
ops: []int{int(OpPush), operandFiller},
|
||||
},
|
||||
{
|
||||
segs: []segment{
|
||||
deepWildcard{},
|
||||
},
|
||||
ops: []int{int(OpPushM), operandFiller},
|
||||
},
|
||||
{
|
||||
segs: []segment{
|
||||
literal("v1"),
|
||||
},
|
||||
ops: []int{int(OpLitPush), 0},
|
||||
pool: []string{"v1"},
|
||||
},
|
||||
{
|
||||
segs: []segment{
|
||||
literal("v1"),
|
||||
},
|
||||
verb: "LOCK",
|
||||
ops: []int{int(OpLitPush), 0},
|
||||
pool: []string{"v1"},
|
||||
},
|
||||
{
|
||||
segs: []segment{
|
||||
variable{
|
||||
path: "name.nested",
|
||||
segments: []segment{
|
||||
wildcard{},
|
||||
},
|
||||
},
|
||||
},
|
||||
ops: []int{
|
||||
int(OpPush), operandFiller,
|
||||
int(OpConcatN), 1,
|
||||
int(OpCapture), 0,
|
||||
},
|
||||
pool: []string{"name.nested"},
|
||||
fields: []string{"name.nested"},
|
||||
},
|
||||
{
|
||||
segs: []segment{
|
||||
literal("obj"),
|
||||
variable{
|
||||
path: "name.nested",
|
||||
segments: []segment{
|
||||
literal("a"),
|
||||
wildcard{},
|
||||
literal("b"),
|
||||
},
|
||||
},
|
||||
variable{
|
||||
path: "obj",
|
||||
segments: []segment{
|
||||
deepWildcard{},
|
||||
},
|
||||
},
|
||||
},
|
||||
ops: []int{
|
||||
int(OpLitPush), 0,
|
||||
int(OpLitPush), 1,
|
||||
int(OpPush), operandFiller,
|
||||
int(OpLitPush), 2,
|
||||
int(OpConcatN), 3,
|
||||
int(OpCapture), 3,
|
||||
int(OpPushM), operandFiller,
|
||||
int(OpConcatN), 1,
|
||||
int(OpCapture), 0,
|
||||
},
|
||||
pool: []string{"obj", "a", "b", "name.nested"},
|
||||
fields: []string{"name.nested", "obj"},
|
||||
},
|
||||
} {
|
||||
tmpl := template{
|
||||
segments: spec.segs,
|
||||
verb: spec.verb,
|
||||
}
|
||||
compiled := tmpl.Compile()
|
||||
if got, want := compiled.Version, opcodeVersion; got != want {
|
||||
t.Errorf("tmpl.Compile().Version = %d; want %d; segs=%#v, verb=%q", got, want, spec.segs, spec.verb)
|
||||
}
|
||||
if got, want := compiled.OpCodes, spec.ops; !reflect.DeepEqual(got, want) {
|
||||
t.Errorf("tmpl.Compile().OpCodes = %v; want %v; segs=%#v, verb=%q", got, want, spec.segs, spec.verb)
|
||||
}
|
||||
if got, want := compiled.Pool, spec.pool; !reflect.DeepEqual(got, want) {
|
||||
t.Errorf("tmpl.Compile().Pool = %q; want %q; segs=%#v, verb=%q", got, want, spec.segs, spec.verb)
|
||||
}
|
||||
if got, want := compiled.Verb, spec.verb; got != want {
|
||||
t.Errorf("tmpl.Compile().Verb = %q; want %q; segs=%#v, verb=%q", got, want, spec.segs, spec.verb)
|
||||
}
|
||||
if got, want := compiled.Fields, spec.fields; !reflect.DeepEqual(got, want) {
|
||||
t.Errorf("tmpl.Compile().Fields = %q; want %q; segs=%#v, verb=%q", got, want, spec.segs, spec.verb)
|
||||
}
|
||||
}
|
||||
}
|
||||
363
api/router/util/parse.go
Normal file
363
api/router/util/parse.go
Normal file
@ -0,0 +1,363 @@
|
||||
package util
|
||||
|
||||
// download from https://raw.githubusercontent.com/grpc-ecosystem/grpc-gateway/master/protoc-gen-grpc-gateway/httprule/parse.go
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"strings"
|
||||
|
||||
"github.com/micro/go-micro/v2/logger"
|
||||
)
|
||||
|
||||
// InvalidTemplateError indicates that the path template is not valid.
|
||||
type InvalidTemplateError struct {
|
||||
tmpl string
|
||||
msg string
|
||||
}
|
||||
|
||||
func (e InvalidTemplateError) Error() string {
|
||||
return fmt.Sprintf("%s: %s", e.msg, e.tmpl)
|
||||
}
|
||||
|
||||
// Parse parses the string representation of path template
|
||||
func Parse(tmpl string) (Compiler, error) {
|
||||
if !strings.HasPrefix(tmpl, "/") {
|
||||
return template{}, InvalidTemplateError{tmpl: tmpl, msg: "no leading /"}
|
||||
}
|
||||
tokens, verb := tokenize(tmpl[1:])
|
||||
|
||||
p := parser{tokens: tokens}
|
||||
segs, err := p.topLevelSegments()
|
||||
if err != nil {
|
||||
return template{}, InvalidTemplateError{tmpl: tmpl, msg: err.Error()}
|
||||
}
|
||||
|
||||
return template{
|
||||
segments: segs,
|
||||
verb: verb,
|
||||
template: tmpl,
|
||||
}, nil
|
||||
}
|
||||
|
||||
func tokenize(path string) (tokens []string, verb string) {
|
||||
if path == "" {
|
||||
return []string{eof}, ""
|
||||
}
|
||||
|
||||
const (
|
||||
init = iota
|
||||
field
|
||||
nested
|
||||
)
|
||||
var (
|
||||
st = init
|
||||
)
|
||||
for path != "" {
|
||||
var idx int
|
||||
switch st {
|
||||
case init:
|
||||
idx = strings.IndexAny(path, "/{")
|
||||
case field:
|
||||
idx = strings.IndexAny(path, ".=}")
|
||||
case nested:
|
||||
idx = strings.IndexAny(path, "/}")
|
||||
}
|
||||
if idx < 0 {
|
||||
tokens = append(tokens, path)
|
||||
break
|
||||
}
|
||||
switch r := path[idx]; r {
|
||||
case '/', '.':
|
||||
case '{':
|
||||
st = field
|
||||
case '=':
|
||||
st = nested
|
||||
case '}':
|
||||
st = init
|
||||
}
|
||||
if idx == 0 {
|
||||
tokens = append(tokens, path[idx:idx+1])
|
||||
} else {
|
||||
tokens = append(tokens, path[:idx], path[idx:idx+1])
|
||||
}
|
||||
path = path[idx+1:]
|
||||
}
|
||||
|
||||
l := len(tokens)
|
||||
t := tokens[l-1]
|
||||
if idx := strings.LastIndex(t, ":"); idx == 0 {
|
||||
tokens, verb = tokens[:l-1], t[1:]
|
||||
} else if idx > 0 {
|
||||
tokens[l-1], verb = t[:idx], t[idx+1:]
|
||||
}
|
||||
tokens = append(tokens, eof)
|
||||
return tokens, verb
|
||||
}
|
||||
|
||||
// parser is a parser of the template syntax defined in github.com/googleapis/googleapis/google/api/http.proto.
|
||||
type parser struct {
|
||||
tokens []string
|
||||
accepted []string
|
||||
}
|
||||
|
||||
// topLevelSegments is the target of this parser.
|
||||
func (p *parser) topLevelSegments() ([]segment, error) {
|
||||
if logger.V(logger.DebugLevel, logger.DefaultLogger) {
|
||||
logger.Debugf("Parsing %q", p.tokens)
|
||||
}
|
||||
segs, err := p.segments()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if logger.V(logger.DebugLevel, logger.DefaultLogger) {
|
||||
logger.Debugf("accept segments: %q; %q", p.accepted, p.tokens)
|
||||
}
|
||||
if _, err := p.accept(typeEOF); err != nil {
|
||||
return nil, fmt.Errorf("unexpected token %q after segments %q", p.tokens[0], strings.Join(p.accepted, ""))
|
||||
}
|
||||
if logger.V(logger.DebugLevel, logger.DefaultLogger) {
|
||||
logger.Debugf("accept eof: %q; %q", p.accepted, p.tokens)
|
||||
}
|
||||
return segs, nil
|
||||
}
|
||||
|
||||
func (p *parser) segments() ([]segment, error) {
|
||||
s, err := p.segment()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if logger.V(logger.DebugLevel, logger.DefaultLogger) {
|
||||
logger.Debugf("accept segment: %q; %q", p.accepted, p.tokens)
|
||||
}
|
||||
segs := []segment{s}
|
||||
for {
|
||||
if _, err := p.accept("/"); err != nil {
|
||||
return segs, nil
|
||||
}
|
||||
s, err := p.segment()
|
||||
if err != nil {
|
||||
return segs, err
|
||||
}
|
||||
segs = append(segs, s)
|
||||
if logger.V(logger.DebugLevel, logger.DefaultLogger) {
|
||||
logger.Debugf("accept segment: %q; %q", p.accepted, p.tokens)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (p *parser) segment() (segment, error) {
|
||||
if _, err := p.accept("*"); err == nil {
|
||||
return wildcard{}, nil
|
||||
}
|
||||
if _, err := p.accept("**"); err == nil {
|
||||
return deepWildcard{}, nil
|
||||
}
|
||||
if l, err := p.literal(); err == nil {
|
||||
return l, nil
|
||||
}
|
||||
|
||||
v, err := p.variable()
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("segment neither wildcards, literal or variable: %v", err)
|
||||
}
|
||||
return v, err
|
||||
}
|
||||
|
||||
func (p *parser) literal() (segment, error) {
|
||||
lit, err := p.accept(typeLiteral)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return literal(lit), nil
|
||||
}
|
||||
|
||||
func (p *parser) variable() (segment, error) {
|
||||
if _, err := p.accept("{"); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
path, err := p.fieldPath()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
var segs []segment
|
||||
if _, err := p.accept("="); err == nil {
|
||||
segs, err = p.segments()
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("invalid segment in variable %q: %v", path, err)
|
||||
}
|
||||
} else {
|
||||
segs = []segment{wildcard{}}
|
||||
}
|
||||
|
||||
if _, err := p.accept("}"); err != nil {
|
||||
return nil, fmt.Errorf("unterminated variable segment: %s", path)
|
||||
}
|
||||
return variable{
|
||||
path: path,
|
||||
segments: segs,
|
||||
}, nil
|
||||
}
|
||||
|
||||
func (p *parser) fieldPath() (string, error) {
|
||||
c, err := p.accept(typeIdent)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
components := []string{c}
|
||||
for {
|
||||
if _, err = p.accept("."); err != nil {
|
||||
return strings.Join(components, "."), nil
|
||||
}
|
||||
c, err := p.accept(typeIdent)
|
||||
if err != nil {
|
||||
return "", fmt.Errorf("invalid field path component: %v", err)
|
||||
}
|
||||
components = append(components, c)
|
||||
}
|
||||
}
|
||||
|
||||
// A termType is a type of terminal symbols.
|
||||
type termType string
|
||||
|
||||
// These constants define some of valid values of termType.
|
||||
// They improve readability of parse functions.
|
||||
//
|
||||
// You can also use "/", "*", "**", "." or "=" as valid values.
|
||||
const (
|
||||
typeIdent = termType("ident")
|
||||
typeLiteral = termType("literal")
|
||||
typeEOF = termType("$")
|
||||
)
|
||||
|
||||
const (
|
||||
// eof is the terminal symbol which always appears at the end of token sequence.
|
||||
eof = "\u0000"
|
||||
)
|
||||
|
||||
// accept tries to accept a token in "p".
|
||||
// This function consumes a token and returns it if it matches to the specified "term".
|
||||
// If it doesn't match, the function does not consume any tokens and return an error.
|
||||
func (p *parser) accept(term termType) (string, error) {
|
||||
t := p.tokens[0]
|
||||
switch term {
|
||||
case "/", "*", "**", ".", "=", "{", "}":
|
||||
if t != string(term) && t != "/" {
|
||||
return "", fmt.Errorf("expected %q but got %q", term, t)
|
||||
}
|
||||
case typeEOF:
|
||||
if t != eof {
|
||||
return "", fmt.Errorf("expected EOF but got %q", t)
|
||||
}
|
||||
case typeIdent:
|
||||
if err := expectIdent(t); err != nil {
|
||||
return "", err
|
||||
}
|
||||
case typeLiteral:
|
||||
if err := expectPChars(t); err != nil {
|
||||
return "", err
|
||||
}
|
||||
default:
|
||||
return "", fmt.Errorf("unknown termType %q", term)
|
||||
}
|
||||
p.tokens = p.tokens[1:]
|
||||
p.accepted = append(p.accepted, t)
|
||||
return t, nil
|
||||
}
|
||||
|
||||
// expectPChars determines if "t" consists of only pchars defined in RFC3986.
|
||||
//
|
||||
// https://www.ietf.org/rfc/rfc3986.txt, P.49
|
||||
// pchar = unreserved / pct-encoded / sub-delims / ":" / "@"
|
||||
// unreserved = ALPHA / DIGIT / "-" / "." / "_" / "~"
|
||||
// sub-delims = "!" / "$" / "&" / "'" / "(" / ")"
|
||||
// / "*" / "+" / "," / ";" / "="
|
||||
// pct-encoded = "%" HEXDIG HEXDIG
|
||||
func expectPChars(t string) error {
|
||||
const (
|
||||
init = iota
|
||||
pct1
|
||||
pct2
|
||||
)
|
||||
st := init
|
||||
for _, r := range t {
|
||||
if st != init {
|
||||
if !isHexDigit(r) {
|
||||
return fmt.Errorf("invalid hexdigit: %c(%U)", r, r)
|
||||
}
|
||||
switch st {
|
||||
case pct1:
|
||||
st = pct2
|
||||
case pct2:
|
||||
st = init
|
||||
}
|
||||
continue
|
||||
}
|
||||
|
||||
// unreserved
|
||||
switch {
|
||||
case 'A' <= r && r <= 'Z':
|
||||
continue
|
||||
case 'a' <= r && r <= 'z':
|
||||
continue
|
||||
case '0' <= r && r <= '9':
|
||||
continue
|
||||
}
|
||||
switch r {
|
||||
case '-', '.', '_', '~':
|
||||
// unreserved
|
||||
case '!', '$', '&', '\'', '(', ')', '*', '+', ',', ';', '=':
|
||||
// sub-delims
|
||||
case ':', '@':
|
||||
// rest of pchar
|
||||
case '%':
|
||||
// pct-encoded
|
||||
st = pct1
|
||||
default:
|
||||
return fmt.Errorf("invalid character in path segment: %q(%U)", r, r)
|
||||
}
|
||||
}
|
||||
if st != init {
|
||||
return fmt.Errorf("invalid percent-encoding in %q", t)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// expectIdent determines if "ident" is a valid identifier in .proto schema ([[:alpha:]_][[:alphanum:]_]*).
|
||||
func expectIdent(ident string) error {
|
||||
if ident == "" {
|
||||
return fmt.Errorf("empty identifier")
|
||||
}
|
||||
for pos, r := range ident {
|
||||
switch {
|
||||
case '0' <= r && r <= '9':
|
||||
if pos == 0 {
|
||||
return fmt.Errorf("identifier starting with digit: %s", ident)
|
||||
}
|
||||
continue
|
||||
case 'A' <= r && r <= 'Z':
|
||||
continue
|
||||
case 'a' <= r && r <= 'z':
|
||||
continue
|
||||
case r == '_':
|
||||
continue
|
||||
default:
|
||||
return fmt.Errorf("invalid character %q(%U) in identifier: %s", r, r, ident)
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func isHexDigit(r rune) bool {
|
||||
switch {
|
||||
case '0' <= r && r <= '9':
|
||||
return true
|
||||
case 'A' <= r && r <= 'F':
|
||||
return true
|
||||
case 'a' <= r && r <= 'f':
|
||||
return true
|
||||
}
|
||||
return false
|
||||
}
|
||||
321
api/router/util/parse_test.go
Normal file
321
api/router/util/parse_test.go
Normal file
@ -0,0 +1,321 @@
|
||||
package util
|
||||
|
||||
// download from https://raw.githubusercontent.com/grpc-ecosystem/grpc-gateway/master/protoc-gen-grpc-gateway/httprule/parse_test.go
|
||||
|
||||
import (
|
||||
"flag"
|
||||
"fmt"
|
||||
"reflect"
|
||||
"testing"
|
||||
|
||||
"github.com/micro/go-micro/v2/logger"
|
||||
)
|
||||
|
||||
func TestTokenize(t *testing.T) {
|
||||
for _, spec := range []struct {
|
||||
src string
|
||||
tokens []string
|
||||
}{
|
||||
{
|
||||
src: "",
|
||||
tokens: []string{eof},
|
||||
},
|
||||
{
|
||||
src: "v1",
|
||||
tokens: []string{"v1", eof},
|
||||
},
|
||||
{
|
||||
src: "v1/b",
|
||||
tokens: []string{"v1", "/", "b", eof},
|
||||
},
|
||||
{
|
||||
src: "v1/endpoint/*",
|
||||
tokens: []string{"v1", "/", "endpoint", "/", "*", eof},
|
||||
},
|
||||
{
|
||||
src: "v1/endpoint/**",
|
||||
tokens: []string{"v1", "/", "endpoint", "/", "**", eof},
|
||||
},
|
||||
{
|
||||
src: "v1/b/{bucket_name=*}",
|
||||
tokens: []string{
|
||||
"v1", "/",
|
||||
"b", "/",
|
||||
"{", "bucket_name", "=", "*", "}",
|
||||
eof,
|
||||
},
|
||||
},
|
||||
{
|
||||
src: "v1/b/{bucket_name=buckets/*}",
|
||||
tokens: []string{
|
||||
"v1", "/",
|
||||
"b", "/",
|
||||
"{", "bucket_name", "=", "buckets", "/", "*", "}",
|
||||
eof,
|
||||
},
|
||||
},
|
||||
{
|
||||
src: "v1/b/{bucket_name=buckets/*}/o",
|
||||
tokens: []string{
|
||||
"v1", "/",
|
||||
"b", "/",
|
||||
"{", "bucket_name", "=", "buckets", "/", "*", "}", "/",
|
||||
"o",
|
||||
eof,
|
||||
},
|
||||
},
|
||||
{
|
||||
src: "v1/b/{bucket_name=buckets/*}/o/{name}",
|
||||
tokens: []string{
|
||||
"v1", "/",
|
||||
"b", "/",
|
||||
"{", "bucket_name", "=", "buckets", "/", "*", "}", "/",
|
||||
"o", "/", "{", "name", "}",
|
||||
eof,
|
||||
},
|
||||
},
|
||||
{
|
||||
src: "v1/a=b&c=d;e=f:g/endpoint.rdf",
|
||||
tokens: []string{
|
||||
"v1", "/",
|
||||
"a=b&c=d;e=f:g", "/",
|
||||
"endpoint.rdf",
|
||||
eof,
|
||||
},
|
||||
},
|
||||
} {
|
||||
tokens, verb := tokenize(spec.src)
|
||||
if got, want := tokens, spec.tokens; !reflect.DeepEqual(got, want) {
|
||||
t.Errorf("tokenize(%q) = %q, _; want %q, _", spec.src, got, want)
|
||||
}
|
||||
if got, want := verb, ""; got != want {
|
||||
t.Errorf("tokenize(%q) = _, %q; want _, %q", spec.src, got, want)
|
||||
}
|
||||
|
||||
src := fmt.Sprintf("%s:%s", spec.src, "LOCK")
|
||||
tokens, verb = tokenize(src)
|
||||
if got, want := tokens, spec.tokens; !reflect.DeepEqual(got, want) {
|
||||
t.Errorf("tokenize(%q) = %q, _; want %q, _", src, got, want)
|
||||
}
|
||||
if got, want := verb, "LOCK"; got != want {
|
||||
t.Errorf("tokenize(%q) = _, %q; want _, %q", src, got, want)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestParseSegments(t *testing.T) {
|
||||
flag.Set("v", "3")
|
||||
for _, spec := range []struct {
|
||||
tokens []string
|
||||
want []segment
|
||||
}{
|
||||
{
|
||||
tokens: []string{"v1", eof},
|
||||
want: []segment{
|
||||
literal("v1"),
|
||||
},
|
||||
},
|
||||
{
|
||||
tokens: []string{"/", eof},
|
||||
want: []segment{
|
||||
wildcard{},
|
||||
},
|
||||
},
|
||||
{
|
||||
tokens: []string{"-._~!$&'()*+,;=:@", eof},
|
||||
want: []segment{
|
||||
literal("-._~!$&'()*+,;=:@"),
|
||||
},
|
||||
},
|
||||
{
|
||||
tokens: []string{"%e7%ac%ac%e4%b8%80%e7%89%88", eof},
|
||||
want: []segment{
|
||||
literal("%e7%ac%ac%e4%b8%80%e7%89%88"),
|
||||
},
|
||||
},
|
||||
{
|
||||
tokens: []string{"v1", "/", "*", eof},
|
||||
want: []segment{
|
||||
literal("v1"),
|
||||
wildcard{},
|
||||
},
|
||||
},
|
||||
{
|
||||
tokens: []string{"v1", "/", "**", eof},
|
||||
want: []segment{
|
||||
literal("v1"),
|
||||
deepWildcard{},
|
||||
},
|
||||
},
|
||||
{
|
||||
tokens: []string{"{", "name", "}", eof},
|
||||
want: []segment{
|
||||
variable{
|
||||
path: "name",
|
||||
segments: []segment{
|
||||
wildcard{},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
tokens: []string{"{", "name", "=", "*", "}", eof},
|
||||
want: []segment{
|
||||
variable{
|
||||
path: "name",
|
||||
segments: []segment{
|
||||
wildcard{},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
tokens: []string{"{", "field", ".", "nested", ".", "nested2", "=", "*", "}", eof},
|
||||
want: []segment{
|
||||
variable{
|
||||
path: "field.nested.nested2",
|
||||
segments: []segment{
|
||||
wildcard{},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
tokens: []string{"{", "name", "=", "a", "/", "b", "/", "*", "}", eof},
|
||||
want: []segment{
|
||||
variable{
|
||||
path: "name",
|
||||
segments: []segment{
|
||||
literal("a"),
|
||||
literal("b"),
|
||||
wildcard{},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
tokens: []string{
|
||||
"v1", "/",
|
||||
"{",
|
||||
"name", ".", "nested", ".", "nested2",
|
||||
"=",
|
||||
"a", "/", "b", "/", "*",
|
||||
"}", "/",
|
||||
"o", "/",
|
||||
"{",
|
||||
"another_name",
|
||||
"=",
|
||||
"a", "/", "b", "/", "*", "/", "c",
|
||||
"}", "/",
|
||||
"**",
|
||||
eof},
|
||||
want: []segment{
|
||||
literal("v1"),
|
||||
variable{
|
||||
path: "name.nested.nested2",
|
||||
segments: []segment{
|
||||
literal("a"),
|
||||
literal("b"),
|
||||
wildcard{},
|
||||
},
|
||||
},
|
||||
literal("o"),
|
||||
variable{
|
||||
path: "another_name",
|
||||
segments: []segment{
|
||||
literal("a"),
|
||||
literal("b"),
|
||||
wildcard{},
|
||||
literal("c"),
|
||||
},
|
||||
},
|
||||
deepWildcard{},
|
||||
},
|
||||
},
|
||||
} {
|
||||
p := parser{tokens: spec.tokens}
|
||||
segs, err := p.topLevelSegments()
|
||||
if err != nil {
|
||||
t.Errorf("parser{%q}.segments() failed with %v; want success", spec.tokens, err)
|
||||
continue
|
||||
}
|
||||
if got, want := segs, spec.want; !reflect.DeepEqual(got, want) {
|
||||
t.Errorf("parser{%q}.segments() = %#v; want %#v", spec.tokens, got, want)
|
||||
}
|
||||
if got := p.tokens; len(got) > 0 {
|
||||
t.Errorf("p.tokens = %q; want []; spec.tokens=%q", got, spec.tokens)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestParseSegmentsWithErrors(t *testing.T) {
|
||||
flag.Set("v", "3")
|
||||
for _, spec := range []struct {
|
||||
tokens []string
|
||||
}{
|
||||
{
|
||||
// double slash
|
||||
tokens: []string{"//", eof},
|
||||
},
|
||||
{
|
||||
// invalid literal
|
||||
tokens: []string{"a?b", eof},
|
||||
},
|
||||
{
|
||||
// invalid percent-encoding
|
||||
tokens: []string{"%", eof},
|
||||
},
|
||||
{
|
||||
// invalid percent-encoding
|
||||
tokens: []string{"%2", eof},
|
||||
},
|
||||
{
|
||||
// invalid percent-encoding
|
||||
tokens: []string{"a%2z", eof},
|
||||
},
|
||||
{
|
||||
// empty segments
|
||||
tokens: []string{eof},
|
||||
},
|
||||
{
|
||||
// unterminated variable
|
||||
tokens: []string{"{", "name", eof},
|
||||
},
|
||||
{
|
||||
// unterminated variable
|
||||
tokens: []string{"{", "name", "=", eof},
|
||||
},
|
||||
{
|
||||
// unterminated variable
|
||||
tokens: []string{"{", "name", "=", "*", eof},
|
||||
},
|
||||
{
|
||||
// empty component in field path
|
||||
tokens: []string{"{", "name", ".", "}", eof},
|
||||
},
|
||||
{
|
||||
// empty component in field path
|
||||
tokens: []string{"{", "name", ".", ".", "nested", "}", eof},
|
||||
},
|
||||
{
|
||||
// invalid character in identifier
|
||||
tokens: []string{"{", "field-name", "}", eof},
|
||||
},
|
||||
{
|
||||
// no slash between segments
|
||||
tokens: []string{"v1", "endpoint", eof},
|
||||
},
|
||||
{
|
||||
// no slash between segments
|
||||
tokens: []string{"v1", "{", "name", "}", eof},
|
||||
},
|
||||
} {
|
||||
p := parser{tokens: spec.tokens}
|
||||
segs, err := p.topLevelSegments()
|
||||
if err == nil {
|
||||
t.Errorf("parser{%q}.segments() succeeded; want InvalidTemplateError; accepted %#v", spec.tokens, segs)
|
||||
continue
|
||||
}
|
||||
logger.Info(err)
|
||||
}
|
||||
}
|
||||
24
api/router/util/pattern.go
Normal file
24
api/router/util/pattern.go
Normal file
@ -0,0 +1,24 @@
|
||||
package util
|
||||
|
||||
// download from https://raw.githubusercontent.com/grpc-ecosystem/grpc-gateway/master/utilities/pattern.go
|
||||
|
||||
// An OpCode is a opcode of compiled path patterns.
|
||||
type OpCode int
|
||||
|
||||
// These constants are the valid values of OpCode.
|
||||
const (
|
||||
// OpNop does nothing
|
||||
OpNop = OpCode(iota)
|
||||
// OpPush pushes a component to stack
|
||||
OpPush
|
||||
// OpLitPush pushes a component to stack if it matches to the literal
|
||||
OpLitPush
|
||||
// OpPushM concatenates the remaining components and pushes it to stack
|
||||
OpPushM
|
||||
// OpConcatN pops N items from stack, concatenates them and pushes it back to stack
|
||||
OpConcatN
|
||||
// OpCapture pops an item and binds it to the variable
|
||||
OpCapture
|
||||
// OpEnd is the least positive invalid opcode.
|
||||
OpEnd
|
||||
)
|
||||
283
api/router/util/runtime.go
Normal file
283
api/router/util/runtime.go
Normal file
@ -0,0 +1,283 @@
|
||||
package util
|
||||
|
||||
// download from https://raw.githubusercontent.com/grpc-ecosystem/grpc-gateway/master/runtime/pattern.go
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
"strings"
|
||||
|
||||
"github.com/micro/go-micro/v2/logger"
|
||||
)
|
||||
|
||||
var (
|
||||
// ErrNotMatch indicates that the given HTTP request path does not match to the pattern.
|
||||
ErrNotMatch = errors.New("not match to the path pattern")
|
||||
// ErrInvalidPattern indicates that the given definition of Pattern is not valid.
|
||||
ErrInvalidPattern = errors.New("invalid pattern")
|
||||
)
|
||||
|
||||
type rop struct {
|
||||
code OpCode
|
||||
operand int
|
||||
}
|
||||
|
||||
// Pattern is a template pattern of http request paths defined in github.com/googleapis/googleapis/google/api/http.proto.
|
||||
type Pattern struct {
|
||||
// ops is a list of operations
|
||||
ops []rop
|
||||
// pool is a constant pool indexed by the operands or vars.
|
||||
pool []string
|
||||
// vars is a list of variables names to be bound by this pattern
|
||||
vars []string
|
||||
// stacksize is the max depth of the stack
|
||||
stacksize int
|
||||
// tailLen is the length of the fixed-size segments after a deep wildcard
|
||||
tailLen int
|
||||
// verb is the VERB part of the path pattern. It is empty if the pattern does not have VERB part.
|
||||
verb string
|
||||
// assumeColonVerb indicates whether a path suffix after a final
|
||||
// colon may only be interpreted as a verb.
|
||||
assumeColonVerb bool
|
||||
}
|
||||
|
||||
type patternOptions struct {
|
||||
assumeColonVerb bool
|
||||
}
|
||||
|
||||
// PatternOpt is an option for creating Patterns.
|
||||
type PatternOpt func(*patternOptions)
|
||||
|
||||
// NewPattern returns a new Pattern from the given definition values.
|
||||
// "ops" is a sequence of op codes. "pool" is a constant pool.
|
||||
// "verb" is the verb part of the pattern. It is empty if the pattern does not have the part.
|
||||
// "version" must be 1 for now.
|
||||
// It returns an error if the given definition is invalid.
|
||||
func NewPattern(version int, ops []int, pool []string, verb string, opts ...PatternOpt) (Pattern, error) {
|
||||
options := patternOptions{
|
||||
assumeColonVerb: true,
|
||||
}
|
||||
for _, o := range opts {
|
||||
o(&options)
|
||||
}
|
||||
|
||||
if version != 1 {
|
||||
if logger.V(logger.DebugLevel, logger.DefaultLogger) {
|
||||
logger.Debugf("unsupported version: %d", version)
|
||||
}
|
||||
return Pattern{}, ErrInvalidPattern
|
||||
}
|
||||
|
||||
l := len(ops)
|
||||
if l%2 != 0 {
|
||||
if logger.V(logger.DebugLevel, logger.DefaultLogger) {
|
||||
logger.Debugf("odd number of ops codes: %d", l)
|
||||
}
|
||||
return Pattern{}, ErrInvalidPattern
|
||||
}
|
||||
|
||||
var (
|
||||
typedOps []rop
|
||||
stack, maxstack int
|
||||
tailLen int
|
||||
pushMSeen bool
|
||||
vars []string
|
||||
)
|
||||
for i := 0; i < l; i += 2 {
|
||||
op := rop{code: OpCode(ops[i]), operand: ops[i+1]}
|
||||
switch op.code {
|
||||
case OpNop:
|
||||
continue
|
||||
case OpPush:
|
||||
if pushMSeen {
|
||||
tailLen++
|
||||
}
|
||||
stack++
|
||||
case OpPushM:
|
||||
if pushMSeen {
|
||||
if logger.V(logger.DebugLevel, logger.DefaultLogger) {
|
||||
logger.Debug("pushM appears twice")
|
||||
}
|
||||
return Pattern{}, ErrInvalidPattern
|
||||
}
|
||||
pushMSeen = true
|
||||
stack++
|
||||
case OpLitPush:
|
||||
if op.operand < 0 || len(pool) <= op.operand {
|
||||
if logger.V(logger.DebugLevel, logger.DefaultLogger) {
|
||||
logger.Debugf("negative literal index: %d", op.operand)
|
||||
}
|
||||
return Pattern{}, ErrInvalidPattern
|
||||
}
|
||||
if pushMSeen {
|
||||
tailLen++
|
||||
}
|
||||
stack++
|
||||
case OpConcatN:
|
||||
if op.operand <= 0 {
|
||||
if logger.V(logger.DebugLevel, logger.DefaultLogger) {
|
||||
logger.Debugf("negative concat size: %d", op.operand)
|
||||
}
|
||||
return Pattern{}, ErrInvalidPattern
|
||||
}
|
||||
stack -= op.operand
|
||||
if stack < 0 {
|
||||
if logger.V(logger.DebugLevel, logger.DefaultLogger) {
|
||||
logger.Debug("stack underflow")
|
||||
}
|
||||
return Pattern{}, ErrInvalidPattern
|
||||
}
|
||||
stack++
|
||||
case OpCapture:
|
||||
if op.operand < 0 || len(pool) <= op.operand {
|
||||
if logger.V(logger.DebugLevel, logger.DefaultLogger) {
|
||||
logger.Debugf("variable name index out of bound: %d", op.operand)
|
||||
}
|
||||
return Pattern{}, ErrInvalidPattern
|
||||
}
|
||||
v := pool[op.operand]
|
||||
op.operand = len(vars)
|
||||
vars = append(vars, v)
|
||||
stack--
|
||||
if stack < 0 {
|
||||
if logger.V(logger.DebugLevel, logger.DefaultLogger) {
|
||||
logger.Debug("stack underflow")
|
||||
}
|
||||
return Pattern{}, ErrInvalidPattern
|
||||
}
|
||||
default:
|
||||
if logger.V(logger.DebugLevel, logger.DefaultLogger) {
|
||||
logger.Debugf("invalid opcode: %d", op.code)
|
||||
}
|
||||
return Pattern{}, ErrInvalidPattern
|
||||
}
|
||||
|
||||
if maxstack < stack {
|
||||
maxstack = stack
|
||||
}
|
||||
typedOps = append(typedOps, op)
|
||||
}
|
||||
return Pattern{
|
||||
ops: typedOps,
|
||||
pool: pool,
|
||||
vars: vars,
|
||||
stacksize: maxstack,
|
||||
tailLen: tailLen,
|
||||
verb: verb,
|
||||
assumeColonVerb: options.assumeColonVerb,
|
||||
}, nil
|
||||
}
|
||||
|
||||
// MustPattern is a helper function which makes it easier to call NewPattern in variable initialization.
|
||||
func MustPattern(p Pattern, err error) Pattern {
|
||||
if err != nil {
|
||||
if logger.V(logger.DebugLevel, logger.DefaultLogger) {
|
||||
logger.Fatalf("Pattern initialization failed: %v", err)
|
||||
}
|
||||
}
|
||||
return p
|
||||
}
|
||||
|
||||
// Match examines components if it matches to the Pattern.
|
||||
// If it matches, the function returns a mapping from field paths to their captured values.
|
||||
// If otherwise, the function returns an error.
|
||||
func (p Pattern) Match(components []string, verb string) (map[string]string, error) {
|
||||
if p.verb != verb {
|
||||
if p.assumeColonVerb || p.verb != "" {
|
||||
return nil, ErrNotMatch
|
||||
}
|
||||
if len(components) == 0 {
|
||||
components = []string{":" + verb}
|
||||
} else {
|
||||
components = append([]string{}, components...)
|
||||
components[len(components)-1] += ":" + verb
|
||||
}
|
||||
verb = ""
|
||||
}
|
||||
|
||||
var pos int
|
||||
stack := make([]string, 0, p.stacksize)
|
||||
captured := make([]string, len(p.vars))
|
||||
l := len(components)
|
||||
for _, op := range p.ops {
|
||||
switch op.code {
|
||||
case OpNop:
|
||||
continue
|
||||
case OpPush, OpLitPush:
|
||||
if pos >= l {
|
||||
return nil, ErrNotMatch
|
||||
}
|
||||
c := components[pos]
|
||||
if op.code == OpLitPush {
|
||||
if lit := p.pool[op.operand]; c != lit {
|
||||
return nil, ErrNotMatch
|
||||
}
|
||||
}
|
||||
stack = append(stack, c)
|
||||
pos++
|
||||
case OpPushM:
|
||||
end := len(components)
|
||||
if end < pos+p.tailLen {
|
||||
return nil, ErrNotMatch
|
||||
}
|
||||
end -= p.tailLen
|
||||
stack = append(stack, strings.Join(components[pos:end], "/"))
|
||||
pos = end
|
||||
case OpConcatN:
|
||||
n := op.operand
|
||||
l := len(stack) - n
|
||||
stack = append(stack[:l], strings.Join(stack[l:], "/"))
|
||||
case OpCapture:
|
||||
n := len(stack) - 1
|
||||
captured[op.operand] = stack[n]
|
||||
stack = stack[:n]
|
||||
}
|
||||
}
|
||||
if pos < l {
|
||||
return nil, ErrNotMatch
|
||||
}
|
||||
bindings := make(map[string]string)
|
||||
for i, val := range captured {
|
||||
bindings[p.vars[i]] = val
|
||||
}
|
||||
return bindings, nil
|
||||
}
|
||||
|
||||
// Verb returns the verb part of the Pattern.
|
||||
func (p Pattern) Verb() string { return p.verb }
|
||||
|
||||
func (p Pattern) String() string {
|
||||
var stack []string
|
||||
for _, op := range p.ops {
|
||||
switch op.code {
|
||||
case OpNop:
|
||||
continue
|
||||
case OpPush:
|
||||
stack = append(stack, "*")
|
||||
case OpLitPush:
|
||||
stack = append(stack, p.pool[op.operand])
|
||||
case OpPushM:
|
||||
stack = append(stack, "**")
|
||||
case OpConcatN:
|
||||
n := op.operand
|
||||
l := len(stack) - n
|
||||
stack = append(stack[:l], strings.Join(stack[l:], "/"))
|
||||
case OpCapture:
|
||||
n := len(stack) - 1
|
||||
stack[n] = fmt.Sprintf("{%s=%s}", p.vars[op.operand], stack[n])
|
||||
}
|
||||
}
|
||||
segs := strings.Join(stack, "/")
|
||||
if p.verb != "" {
|
||||
return fmt.Sprintf("/%s:%s", segs, p.verb)
|
||||
}
|
||||
return "/" + segs
|
||||
}
|
||||
|
||||
// AssumeColonVerbOpt indicates whether a path suffix after a final
|
||||
// colon may only be interpreted as a verb.
|
||||
func AssumeColonVerbOpt(val bool) PatternOpt {
|
||||
return PatternOpt(func(o *patternOptions) {
|
||||
o.assumeColonVerb = val
|
||||
})
|
||||
}
|
||||
62
api/router/util/types.go
Normal file
62
api/router/util/types.go
Normal file
@ -0,0 +1,62 @@
|
||||
package util
|
||||
|
||||
// download from https://raw.githubusercontent.com/grpc-ecosystem/grpc-gateway/master/protoc-gen-grpc-gateway/httprule/types.go
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"strings"
|
||||
)
|
||||
|
||||
type template struct {
|
||||
segments []segment
|
||||
verb string
|
||||
template string
|
||||
}
|
||||
|
||||
type segment interface {
|
||||
fmt.Stringer
|
||||
compile() (ops []op)
|
||||
}
|
||||
|
||||
type wildcard struct{}
|
||||
|
||||
type deepWildcard struct{}
|
||||
|
||||
type literal string
|
||||
|
||||
type variable struct {
|
||||
path string
|
||||
segments []segment
|
||||
}
|
||||
|
||||
func (wildcard) String() string {
|
||||
return "*"
|
||||
}
|
||||
|
||||
func (deepWildcard) String() string {
|
||||
return "**"
|
||||
}
|
||||
|
||||
func (l literal) String() string {
|
||||
return string(l)
|
||||
}
|
||||
|
||||
func (v variable) String() string {
|
||||
var segs []string
|
||||
for _, s := range v.segments {
|
||||
segs = append(segs, s.String())
|
||||
}
|
||||
return fmt.Sprintf("{%s=%s}", v.path, strings.Join(segs, "/"))
|
||||
}
|
||||
|
||||
func (t template) String() string {
|
||||
var segs []string
|
||||
for _, s := range t.segments {
|
||||
segs = append(segs, s.String())
|
||||
}
|
||||
str := strings.Join(segs, "/")
|
||||
if t.verb != "" {
|
||||
str = fmt.Sprintf("%s:%s", str, t.verb)
|
||||
}
|
||||
return "/" + str
|
||||
}
|
||||
93
api/router/util/types_test.go
Normal file
93
api/router/util/types_test.go
Normal file
@ -0,0 +1,93 @@
|
||||
package util
|
||||
|
||||
// download from https://raw.githubusercontent.com/grpc-ecosystem/grpc-gateway/master/protoc-gen-grpc-gateway/httprule/types_test.go
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"testing"
|
||||
)
|
||||
|
||||
func TestTemplateStringer(t *testing.T) {
|
||||
for _, spec := range []struct {
|
||||
segs []segment
|
||||
want string
|
||||
}{
|
||||
{
|
||||
segs: []segment{
|
||||
literal("v1"),
|
||||
},
|
||||
want: "/v1",
|
||||
},
|
||||
{
|
||||
segs: []segment{
|
||||
wildcard{},
|
||||
},
|
||||
want: "/*",
|
||||
},
|
||||
{
|
||||
segs: []segment{
|
||||
deepWildcard{},
|
||||
},
|
||||
want: "/**",
|
||||
},
|
||||
{
|
||||
segs: []segment{
|
||||
variable{
|
||||
path: "name",
|
||||
segments: []segment{
|
||||
literal("a"),
|
||||
},
|
||||
},
|
||||
},
|
||||
want: "/{name=a}",
|
||||
},
|
||||
{
|
||||
segs: []segment{
|
||||
variable{
|
||||
path: "name",
|
||||
segments: []segment{
|
||||
literal("a"),
|
||||
wildcard{},
|
||||
literal("b"),
|
||||
},
|
||||
},
|
||||
},
|
||||
want: "/{name=a/*/b}",
|
||||
},
|
||||
{
|
||||
segs: []segment{
|
||||
literal("v1"),
|
||||
variable{
|
||||
path: "name",
|
||||
segments: []segment{
|
||||
literal("a"),
|
||||
wildcard{},
|
||||
literal("b"),
|
||||
},
|
||||
},
|
||||
literal("c"),
|
||||
variable{
|
||||
path: "field.nested",
|
||||
segments: []segment{
|
||||
wildcard{},
|
||||
literal("d"),
|
||||
},
|
||||
},
|
||||
wildcard{},
|
||||
literal("e"),
|
||||
deepWildcard{},
|
||||
},
|
||||
want: "/v1/{name=a/*/b}/c/{field.nested=*/d}/*/e/**",
|
||||
},
|
||||
} {
|
||||
tmpl := template{segments: spec.segs}
|
||||
if got, want := tmpl.String(), spec.want; got != want {
|
||||
t.Errorf("%#v.String() = %q; want %q", tmpl, got, want)
|
||||
}
|
||||
|
||||
tmpl.verb = "LOCK"
|
||||
if got, want := tmpl.String(), fmt.Sprintf("%s:LOCK", spec.want); got != want {
|
||||
t.Errorf("%#v.String() = %q; want %q", tmpl, got, want)
|
||||
}
|
||||
}
|
||||
}
|
||||
2
go.mod
2
go.mod
@ -34,7 +34,7 @@ require (
|
||||
github.com/gorilla/websocket v1.4.1 // indirect
|
||||
github.com/grpc-ecosystem/go-grpc-middleware v1.1.0 // indirect
|
||||
github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0 // indirect
|
||||
github.com/grpc-ecosystem/grpc-gateway v1.9.5
|
||||
github.com/grpc-ecosystem/grpc-gateway v1.9.5 // indirect
|
||||
github.com/hashicorp/hcl v1.0.0
|
||||
github.com/hpcloud/tail v1.0.0
|
||||
github.com/imdario/mergo v0.3.8
|
||||
|
||||
Loading…
Reference in New Issue
Block a user