api: extract routers to external repos
Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
This commit is contained in:
parent
8a2b122015
commit
7c311aea19
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@ -1,498 +0,0 @@
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// Package registry provides a dynamic api service router
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package registry
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import (
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"errors"
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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/unistack-org/micro/v3/api"
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"github.com/unistack-org/micro/v3/api/router"
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"github.com/unistack-org/micro/v3/logger"
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"github.com/unistack-org/micro/v3/metadata"
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"github.com/unistack-org/micro/v3/registry"
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util "github.com/unistack-org/micro/v3/util/router"
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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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pcreregs []*regexp.Regexp
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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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opts router.Options
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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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select {
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case <-r.exit:
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return true
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default:
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return false
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}
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}
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// refresh list of api services
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func (r *registryRouter) refresh() {
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var attempts int
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for {
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services, err := r.opts.Registry.ListServices(r.opts.Context)
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if err != nil {
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attempts++
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if logger.V(logger.ErrorLevel) {
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logger.Errorf("unable to list services: %v", err)
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}
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time.Sleep(time.Duration(attempts) * time.Second)
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continue
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}
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attempts = 0
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// for each service, get service and store endpoints
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for _, s := range services {
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service, err := r.opts.Registry.GetService(r.opts.Context, s.Name)
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if err != nil {
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if logger.V(logger.ErrorLevel) {
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logger.Errorf("unable to get service: %v", err)
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}
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continue
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}
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r.store(service)
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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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return
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}
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}
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}
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// process watch event
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func (r *registryRouter) process(res *registry.Result) {
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// skip these things
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if res == nil || res.Service == nil {
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return
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}
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// get entry from cache
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service, err := r.opts.Registry.GetService(r.opts.Context, res.Service.Name)
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if err != nil {
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if logger.V(logger.ErrorLevel) {
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logger.Errorf("unable to get %v service: %v", res.Service.Name, err)
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}
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return
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}
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// update our local endpoints
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r.store(service)
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}
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// store local endpoint cache
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func (r *registryRouter) store(services []*registry.Service) {
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// endpoints
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eps := map[string]*api.Service{}
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// services
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names := map[string]bool{}
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// create a new endpoint mapping
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for _, service := range services {
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// set names we need later
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names[service.Name] = true
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// map per endpoint
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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, sep.Name)
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// decode endpoint
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end := api.Decode(sep.Metadata)
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// no endpoint or no name
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if end == nil || len(end.Name) == 0 {
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continue
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}
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// if we got nothing skip
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if err := api.Validate(end); err != nil {
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if logger.V(logger.TraceLevel) {
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logger.Tracef("endpoint validation failed: %v", err)
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}
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continue
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}
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// try get endpoint
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ep, ok := eps[key]
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if !ok {
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ep = &api.Service{Name: service.Name}
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}
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// overwrite the endpoint
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ep.Endpoint = end
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// append services
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ep.Services = append(ep.Services, service)
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// store it
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eps[key] = ep
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}
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}
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r.Lock()
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defer r.Unlock()
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// delete any existing eps for services we know
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for key, service := range r.eps {
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// skip what we don't care about
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if !names[service.Name] {
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continue
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}
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// ok we know this thing
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// delete delete delete
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delete(r.eps, key)
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}
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// now set the eps we have
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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) {
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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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var pcreok bool
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if p[0] == '^' && p[len(p)-1] == '$' {
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pcrereg, err := regexp.CompilePOSIX(p)
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if err == nil {
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cep.pcreregs = append(cep.pcreregs, pcrereg)
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pcreok = true
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}
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}
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rule, err := util.Parse(p)
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if err != nil && !pcreok {
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if logger.V(logger.TraceLevel) {
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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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} else if err != nil && pcreok {
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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) {
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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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// watch for endpoint changes
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func (r *registryRouter) watch() {
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var attempts int
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for {
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if r.isClosed() {
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return
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}
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// watch for changes
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w, err := r.opts.Registry.Watch(r.opts.Context)
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if err != nil {
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attempts++
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if logger.V(logger.ErrorLevel) {
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logger.Errorf("error watching endpoints: %v", err)
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}
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time.Sleep(time.Duration(attempts) * time.Second)
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continue
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}
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ch := make(chan bool)
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go func() {
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select {
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case <-ch:
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w.Stop()
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case <-r.exit:
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w.Stop()
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}
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}()
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// reset if we get here
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attempts = 0
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for {
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// process next event
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res, err := w.Next()
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if err != nil {
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if logger.V(logger.ErrorLevel) {
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logger.Errorf("error getting next endpoint: %v", err)
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}
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close(ch)
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break
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}
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r.process(res)
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}
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}
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}
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func (r *registryRouter) Options() router.Options {
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return r.opts
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}
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func (r *registryRouter) Close() error {
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select {
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case <-r.exit:
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return nil
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default:
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close(r.exit)
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}
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return nil
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}
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func (r *registryRouter) Register(ep *api.Endpoint) error {
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return nil
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}
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func (r *registryRouter) Deregister(ep *api.Endpoint) error {
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return nil
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}
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func (r *registryRouter) Endpoint(req *http.Request) (*api.Service, error) {
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if r.isClosed() {
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return nil, errors.New("router closed")
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}
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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 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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var mMatch, hMatch, pMatch bool
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// 1. try method
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for _, m := range ep.Method {
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if m == req.Method {
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mMatch = true
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break
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}
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}
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if !mMatch {
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continue
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}
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if logger.V(logger.TraceLevel) {
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logger.Tracef("api method match %s", req.Method)
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}
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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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for idx, h := range ep.Host {
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if h == "" || h == "*" {
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hMatch = true
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break
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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
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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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if logger.V(logger.TraceLevel) {
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logger.Tracef("api host match %s", req.URL.Host)
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}
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// 3. try path via google.api path matching
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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.TraceLevel) {
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logger.Tracef("api gpath not match %s != %v", path, pathreg)
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}
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continue
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}
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if logger.V(logger.TraceLevel) {
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logger.Tracef("api gpath match %s = %v", path, pathreg)
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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
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}
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if !pMatch {
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// 4. try path via pcre path matching
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for _, pathreg := range cep.pcreregs {
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if !pathreg.MatchString(req.URL.Path) {
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if logger.V(logger.TraceLevel) {
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logger.Tracef("api pcre path not match %s != %v", path, pathreg)
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}
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continue
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}
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if logger.V(logger.TraceLevel) {
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logger.Tracef("api pcre path match %s != %v", path, pathreg)
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}
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pMatch = true
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break
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}
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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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// no match
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return nil, errors.New("not found")
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}
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func (r *registryRouter) Route(req *http.Request) (*api.Service, error) {
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if r.isClosed() {
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return nil, errors.New("router closed")
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}
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// try get an endpoint
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ep, err := r.Endpoint(req)
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if err == nil {
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return ep, nil
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}
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// error not nil
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// ignore that shit
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// TODO: don't ignore that shit
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// get the service name
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rp, err := r.opts.Resolver.Resolve(req)
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if err != nil {
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return nil, err
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}
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// service name
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name := rp.Name
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// get service
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services, err := r.opts.Registry.GetService(r.opts.Context, name, registry.GetDomain(rp.Domain))
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if err != nil {
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return nil, err
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}
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// only use endpoint matching when the meta handler is set aka api.Default
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switch r.opts.Handler {
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// rpc handlers
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case "meta", "api", "rpc":
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handler := r.opts.Handler
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// set default handler to api
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if r.opts.Handler == "meta" {
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handler = "rpc"
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}
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// construct api service
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return &api.Service{
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Name: name,
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Endpoint: &api.Endpoint{
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Name: rp.Method,
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Handler: handler,
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},
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Services: services,
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}, nil
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// http handler
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case "http", "proxy", "web":
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// construct api service
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return &api.Service{
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Name: name,
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Endpoint: &api.Endpoint{
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Name: req.URL.String(),
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Handler: r.opts.Handler,
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Host: []string{req.Host},
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Method: []string{req.Method},
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Path: []string{req.URL.Path},
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},
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Services: services,
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}, nil
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}
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return nil, errors.New("unknown handler")
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}
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func newRouter(opts ...router.Option) (*registryRouter, error) {
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options := router.NewOptions(opts...)
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if options.Registry == nil {
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return nil, fmt.Errorf("registry is not set")
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}
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r := ®istryRouter{
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exit: make(chan bool),
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opts: options,
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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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return r, nil
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}
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// NewRouter returns the default router
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func NewRouter(opts ...router.Option) (router.Router, error) {
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return newRouter(opts...)
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}
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@ -1,38 +0,0 @@
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package registry
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import (
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"testing"
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"github.com/stretchr/testify/assert"
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"github.com/unistack-org/micro/v3/registry"
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)
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func TestStoreRegex(t *testing.T) {
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t.Skip()
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router, err := newRouter()
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if err != nil {
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t.Fatal(err)
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}
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router.store([]*registry.Service{
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{
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Name: "Foobar",
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Version: "latest",
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Endpoints: []*registry.Endpoint{
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{
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Name: "foo",
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Metadata: map[string]string{
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"endpoint": "FooEndpoint",
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"description": "Some description",
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"method": "POST",
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"path": "^/foo/$",
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"handler": "rpc",
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},
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},
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},
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Metadata: map[string]string{},
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},
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},
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)
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assert.Len(t, router.ceps["Foobar.foo"].pcreregs, 1)
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}
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@ -1,257 +0,0 @@
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// +build ignore
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package router_test
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import (
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"context"
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"fmt"
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"io/ioutil"
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"log"
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"net/http"
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"testing"
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"time"
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"github.com/unistack-org/micro/v3/api"
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"github.com/unistack-org/micro/v3/api/handler"
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"github.com/unistack-org/micro/v3/api/handler/rpc"
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"github.com/unistack-org/micro/v3/api/router"
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rregistry "github.com/unistack-org/micro/v3/api/router/registry"
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rstatic "github.com/unistack-org/micro/v3/api/router/static"
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"github.com/unistack-org/micro/v3/broker"
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bmemory "github.com/unistack-org/micro/v3/broker/memory"
|
||||
"github.com/unistack-org/micro/v3/client"
|
||||
gcli "github.com/unistack-org/micro/v3/client/grpc"
|
||||
rmemory "github.com/unistack-org/micro/v3/registry/memory"
|
||||
rt "github.com/unistack-org/micro/v3/router"
|
||||
regRouter "github.com/unistack-org/micro/v3/router/registry"
|
||||
"github.com/unistack-org/micro/v3/server"
|
||||
gsrv "github.com/unistack-org/micro/v3/server/grpc"
|
||||
pb "github.com/unistack-org/micro/v3/server/grpc/proto"
|
||||
)
|
||||
|
||||
// server is used to implement helloworld.GreeterServer.
|
||||
type testServer struct {
|
||||
}
|
||||
|
||||
// TestHello implements helloworld.GreeterServer
|
||||
func (s *testServer) Call(ctx context.Context, req *pb.Request, rsp *pb.Response) error {
|
||||
rsp.Msg = "Hello " + req.Uuid
|
||||
return nil
|
||||
}
|
||||
|
||||
// TestHello implements helloworld.GreeterServer
|
||||
func (s *testServer) CallPcre(ctx context.Context, req *pb.Request, rsp *pb.Response) error {
|
||||
rsp.Msg = "Hello " + req.Uuid
|
||||
return nil
|
||||
}
|
||||
|
||||
// TestHello implements helloworld.GreeterServer
|
||||
func (s *testServer) CallPcreInvalid(ctx context.Context, req *pb.Request, rsp *pb.Response) error {
|
||||
rsp.Msg = "Hello " + req.Uuid
|
||||
return nil
|
||||
}
|
||||
|
||||
func initial(t *testing.T) (server.Server, client.Client) {
|
||||
r := rmemory.NewRegistry()
|
||||
b := bmemory.NewBroker(broker.Registry(r))
|
||||
|
||||
// create a new client
|
||||
s := gsrv.NewServer(
|
||||
server.Name("foo"),
|
||||
server.Broker(b),
|
||||
server.Registry(r),
|
||||
)
|
||||
|
||||
rtr := regRouter.NewRouter(
|
||||
rt.Registry(r),
|
||||
)
|
||||
|
||||
// create a new server
|
||||
c := gcli.NewClient(
|
||||
client.Router(rtr),
|
||||
client.Broker(b),
|
||||
)
|
||||
|
||||
h := &testServer{}
|
||||
pb.RegisterTestHandler(s, h)
|
||||
|
||||
if err := s.Start(); err != nil {
|
||||
t.Fatalf("failed to start: %v", err)
|
||||
}
|
||||
|
||||
return s, c
|
||||
}
|
||||
|
||||
func check(t *testing.T, addr string, path string, expected string) {
|
||||
req, err := http.NewRequest("POST", fmt.Sprintf(path, addr), nil)
|
||||
if err != nil {
|
||||
t.Fatalf("Failed to created http.Request: %v", err)
|
||||
}
|
||||
req.Header.Set("Content-Type", "application/json")
|
||||
rsp, err := (&http.Client{}).Do(req)
|
||||
if err != nil {
|
||||
t.Fatalf("Failed to created http.Request: %v", err)
|
||||
}
|
||||
defer rsp.Body.Close()
|
||||
|
||||
buf, err := ioutil.ReadAll(rsp.Body)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
jsonMsg := expected
|
||||
if string(buf) != jsonMsg {
|
||||
t.Fatalf("invalid message received, parsing error %s != %s", buf, jsonMsg)
|
||||
}
|
||||
}
|
||||
|
||||
func TestRouterRegistryPcre(t *testing.T) {
|
||||
s, c := initial(t)
|
||||
defer s.Stop()
|
||||
|
||||
router := rregistry.NewRouter(
|
||||
router.WithHandler(rpc.Handler),
|
||||
router.WithRegistry(s.Options().Registry),
|
||||
)
|
||||
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(t, hsrv.Addr, "http://%s/api/v0/test/call/TEST", `{"msg":"Hello TEST"}`)
|
||||
}
|
||||
|
||||
func TestRouterStaticPcre(t *testing.T) {
|
||||
s, c := initial(t)
|
||||
defer s.Stop()
|
||||
|
||||
router := rstatic.NewRouter(
|
||||
router.WithHandler(rpc.Handler),
|
||||
router.WithRegistry(s.Options().Registry),
|
||||
)
|
||||
|
||||
err := router.Register(&api.Endpoint{
|
||||
Name: "foo.Test.Call",
|
||||
Method: []string{"POST"},
|
||||
Path: []string{"^/api/v0/test/call/?$"},
|
||||
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(t, hsrv.Addr, "http://%s/api/v0/test/call", `{"msg":"Hello "}`)
|
||||
}
|
||||
|
||||
func TestRouterStaticGpath(t *testing.T) {
|
||||
s, c := initial(t)
|
||||
defer s.Stop()
|
||||
|
||||
router := rstatic.NewRouter(
|
||||
router.WithHandler(rpc.Handler),
|
||||
router.WithRegistry(s.Options().Registry),
|
||||
)
|
||||
|
||||
err := router.Register(&api.Endpoint{
|
||||
Name: "foo.Test.Call",
|
||||
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(t, hsrv.Addr, "http://%s/api/v0/test/call/TEST", `{"msg":"Hello TEST"}`)
|
||||
}
|
||||
|
||||
func TestRouterStaticPcreInvalid(t *testing.T) {
|
||||
var ep *api.Endpoint
|
||||
var err error
|
||||
|
||||
s, c := initial(t)
|
||||
defer s.Stop()
|
||||
|
||||
router := rstatic.NewRouter(
|
||||
router.WithHandler(rpc.Handler),
|
||||
router.WithRegistry(s.Options().Registry),
|
||||
)
|
||||
|
||||
ep = &api.Endpoint{
|
||||
Name: "foo.Test.Call",
|
||||
Method: []string{"POST"},
|
||||
Path: []string{"^/api/v0/test/call/?"},
|
||||
Handler: "rpc",
|
||||
}
|
||||
|
||||
err = router.Register(ep)
|
||||
if err == nil {
|
||||
t.Fatalf("invalid endpoint %v", ep)
|
||||
}
|
||||
|
||||
ep = &api.Endpoint{
|
||||
Name: "foo.Test.Call",
|
||||
Method: []string{"POST"},
|
||||
Path: []string{"/api/v0/test/call/?$"},
|
||||
Handler: "rpc",
|
||||
}
|
||||
|
||||
err = router.Register(ep)
|
||||
if err == nil {
|
||||
t.Fatalf("invalid endpoint %v", ep)
|
||||
}
|
||||
|
||||
_ = c
|
||||
}
|
||||
|
|
@ -1,356 +0,0 @@
|
|||
package static
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
"net/http"
|
||||
"regexp"
|
||||
"strings"
|
||||
"sync"
|
||||
|
||||
"github.com/unistack-org/micro/v3/api"
|
||||
"github.com/unistack-org/micro/v3/api/router"
|
||||
"github.com/unistack-org/micro/v3/logger"
|
||||
"github.com/unistack-org/micro/v3/metadata"
|
||||
"github.com/unistack-org/micro/v3/registry"
|
||||
rutil "github.com/unistack-org/micro/v3/util/registry"
|
||||
util "github.com/unistack-org/micro/v3/util/router"
|
||||
)
|
||||
|
||||
type endpoint struct {
|
||||
apiep *api.Endpoint
|
||||
hostregs []*regexp.Regexp
|
||||
pathregs []util.Pattern
|
||||
pcreregs []*regexp.Regexp
|
||||
}
|
||||
|
||||
// router is the default router
|
||||
type staticRouter struct {
|
||||
exit chan bool
|
||||
opts router.Options
|
||||
sync.RWMutex
|
||||
eps map[string]*endpoint
|
||||
}
|
||||
|
||||
func (r *staticRouter) isClosed() bool {
|
||||
select {
|
||||
case <-r.exit:
|
||||
return true
|
||||
default:
|
||||
return false
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
// watch for endpoint changes
|
||||
func (r *staticRouter) watch() {
|
||||
var attempts int
|
||||
|
||||
for {
|
||||
if r.isClosed() {
|
||||
return
|
||||
}
|
||||
|
||||
// watch for changes
|
||||
w, err := r.opts.Registry.Watch()
|
||||
if err != nil {
|
||||
attempts++
|
||||
log.Println("Error watching endpoints", err)
|
||||
time.Sleep(time.Duration(attempts) * time.Second)
|
||||
continue
|
||||
}
|
||||
|
||||
ch := make(chan bool)
|
||||
|
||||
go func() {
|
||||
select {
|
||||
case <-ch:
|
||||
w.Stop()
|
||||
case <-r.exit:
|
||||
w.Stop()
|
||||
}
|
||||
}()
|
||||
|
||||
// reset if we get here
|
||||
attempts = 0
|
||||
|
||||
for {
|
||||
// process next event
|
||||
res, err := w.Next()
|
||||
if err != nil {
|
||||
log.Println("Error getting next endpoint", err)
|
||||
close(ch)
|
||||
break
|
||||
}
|
||||
r.process(res)
|
||||
}
|
||||
}
|
||||
}
|
||||
*/
|
||||
|
||||
func (r *staticRouter) Register(ep *api.Endpoint) error {
|
||||
if err := api.Validate(ep); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
var pathregs []util.Pattern
|
||||
var hostregs []*regexp.Regexp
|
||||
var pcreregs []*regexp.Regexp
|
||||
|
||||
for _, h := range ep.Host {
|
||||
if h == "" || h == "*" {
|
||||
continue
|
||||
}
|
||||
hostreg, err := regexp.CompilePOSIX(h)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
hostregs = append(hostregs, hostreg)
|
||||
}
|
||||
|
||||
for _, p := range ep.Path {
|
||||
var pcreok bool
|
||||
|
||||
// pcre only when we have start and end markers
|
||||
if p[0] == '^' && p[len(p)-1] == '$' {
|
||||
pcrereg, err := regexp.CompilePOSIX(p)
|
||||
if err == nil {
|
||||
pcreregs = append(pcreregs, pcrereg)
|
||||
pcreok = true
|
||||
}
|
||||
}
|
||||
|
||||
rule, err := util.Parse(p)
|
||||
if err != nil && !pcreok {
|
||||
return err
|
||||
} else if err != nil && pcreok {
|
||||
continue
|
||||
}
|
||||
|
||||
tpl := rule.Compile()
|
||||
pathreg, err := util.NewPattern(tpl.Version, tpl.OpCodes, tpl.Pool, "")
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
pathregs = append(pathregs, pathreg)
|
||||
}
|
||||
|
||||
r.Lock()
|
||||
r.eps[ep.Name] = &endpoint{
|
||||
apiep: ep,
|
||||
pcreregs: pcreregs,
|
||||
pathregs: pathregs,
|
||||
hostregs: hostregs,
|
||||
}
|
||||
r.Unlock()
|
||||
return nil
|
||||
}
|
||||
|
||||
func (r *staticRouter) Deregister(ep *api.Endpoint) error {
|
||||
if err := api.Validate(ep); err != nil {
|
||||
return err
|
||||
}
|
||||
r.Lock()
|
||||
delete(r.eps, ep.Name)
|
||||
r.Unlock()
|
||||
return nil
|
||||
}
|
||||
|
||||
func (r *staticRouter) Options() router.Options {
|
||||
return r.opts
|
||||
}
|
||||
|
||||
func (r *staticRouter) Close() error {
|
||||
select {
|
||||
case <-r.exit:
|
||||
return nil
|
||||
default:
|
||||
close(r.exit)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (r *staticRouter) Endpoint(req *http.Request) (*api.Service, error) {
|
||||
ep, err := r.endpoint(req)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
epf := strings.Split(ep.apiep.Name, ".")
|
||||
services, err := r.opts.Registry.GetService(r.opts.Context, epf[0])
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// hack for stream endpoint
|
||||
if ep.apiep.Stream {
|
||||
svcs := rutil.Copy(services)
|
||||
for _, svc := range svcs {
|
||||
if len(svc.Endpoints) == 0 {
|
||||
e := ®istry.Endpoint{}
|
||||
e.Name = strings.Join(epf[1:], ".")
|
||||
e.Metadata = make(map[string]string)
|
||||
e.Metadata["stream"] = "true"
|
||||
svc.Endpoints = append(svc.Endpoints, e)
|
||||
}
|
||||
for _, e := range svc.Endpoints {
|
||||
e.Name = strings.Join(epf[1:], ".")
|
||||
e.Metadata = make(map[string]string)
|
||||
e.Metadata["stream"] = "true"
|
||||
}
|
||||
}
|
||||
|
||||
services = svcs
|
||||
}
|
||||
|
||||
svc := &api.Service{
|
||||
Name: epf[0],
|
||||
Endpoint: &api.Endpoint{
|
||||
Name: strings.Join(epf[1:], "."),
|
||||
Handler: "rpc",
|
||||
Host: ep.apiep.Host,
|
||||
Method: ep.apiep.Method,
|
||||
Path: ep.apiep.Path,
|
||||
Body: ep.apiep.Body,
|
||||
Stream: ep.apiep.Stream,
|
||||
},
|
||||
Services: services,
|
||||
}
|
||||
|
||||
return svc, nil
|
||||
}
|
||||
|
||||
func (r *staticRouter) endpoint(req *http.Request) (*endpoint, error) {
|
||||
if r.isClosed() {
|
||||
return nil, errors.New("router closed")
|
||||
}
|
||||
|
||||
r.RLock()
|
||||
defer r.RUnlock()
|
||||
|
||||
var idx int
|
||||
if len(req.URL.Path) > 0 && req.URL.Path != "/" {
|
||||
idx = 1
|
||||
}
|
||||
path := strings.Split(req.URL.Path[idx:], "/")
|
||||
// use the first match
|
||||
// TODO: weighted matching
|
||||
|
||||
for _, ep := range r.eps {
|
||||
var mMatch, hMatch, pMatch bool
|
||||
|
||||
// 1. try method
|
||||
for _, m := range ep.apiep.Method {
|
||||
if m == req.Method {
|
||||
mMatch = true
|
||||
break
|
||||
}
|
||||
}
|
||||
if !mMatch {
|
||||
continue
|
||||
}
|
||||
if logger.V(logger.TraceLevel) {
|
||||
logger.Tracef("api method match %s", req.Method)
|
||||
}
|
||||
|
||||
// 2. try host
|
||||
if len(ep.apiep.Host) == 0 {
|
||||
hMatch = true
|
||||
} else {
|
||||
for idx, h := range ep.apiep.Host {
|
||||
if h == "" || h == "*" {
|
||||
hMatch = true
|
||||
break
|
||||
} else {
|
||||
if ep.hostregs[idx].MatchString(req.URL.Host) {
|
||||
hMatch = true
|
||||
break
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
if !hMatch {
|
||||
continue
|
||||
}
|
||||
if logger.V(logger.TraceLevel) {
|
||||
logger.Tracef("api host match %s", req.URL.Host)
|
||||
}
|
||||
|
||||
// 3. try google.api path
|
||||
for _, pathreg := range ep.pathregs {
|
||||
matches, err := pathreg.Match(path, "")
|
||||
if err != nil {
|
||||
if logger.V(logger.TraceLevel) {
|
||||
logger.Tracef("api gpath not match %s != %v", path, pathreg)
|
||||
}
|
||||
continue
|
||||
}
|
||||
if logger.V(logger.TraceLevel) {
|
||||
logger.Tracef("api gpath match %s = %v", path, pathreg)
|
||||
}
|
||||
pMatch = true
|
||||
ctx := req.Context()
|
||||
md, ok := metadata.FromContext(ctx)
|
||||
if !ok {
|
||||
md = make(metadata.Metadata)
|
||||
}
|
||||
for k, v := range matches {
|
||||
md[fmt.Sprintf("x-api-field-%s", k)] = v
|
||||
}
|
||||
md["x-api-body"] = ep.apiep.Body
|
||||
*req = *req.Clone(metadata.NewContext(ctx, md))
|
||||
break
|
||||
}
|
||||
|
||||
if !pMatch {
|
||||
// 4. try path via pcre path matching
|
||||
for _, pathreg := range ep.pcreregs {
|
||||
if !pathreg.MatchString(req.URL.Path) {
|
||||
if logger.V(logger.TraceLevel) {
|
||||
logger.Tracef("api pcre path not match %s != %v", req.URL.Path, pathreg)
|
||||
}
|
||||
continue
|
||||
}
|
||||
pMatch = true
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
if !pMatch {
|
||||
continue
|
||||
}
|
||||
// TODO: Percentage traffic
|
||||
|
||||
// we got here, so its a match
|
||||
return ep, nil
|
||||
}
|
||||
|
||||
// no match
|
||||
return nil, fmt.Errorf("endpoint not found for %v", req.URL)
|
||||
}
|
||||
|
||||
func (r *staticRouter) Route(req *http.Request) (*api.Service, error) {
|
||||
if r.isClosed() {
|
||||
return nil, errors.New("router closed")
|
||||
}
|
||||
|
||||
// try get an endpoint
|
||||
ep, err := r.Endpoint(req)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return ep, nil
|
||||
}
|
||||
|
||||
func NewRouter(opts ...router.Option) *staticRouter {
|
||||
options := router.NewOptions(opts...)
|
||||
r := &staticRouter{
|
||||
exit: make(chan bool),
|
||||
opts: options,
|
||||
eps: make(map[string]*endpoint),
|
||||
}
|
||||
//go r.watch()
|
||||
//go r.refresh()
|
||||
return r
|
||||
}
|
||||
Loading…
Reference in New Issue