70 lines
1.4 KiB
Go
70 lines
1.4 KiB
Go
// Package vpath resolves using http path and recognised versioned urls
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package vpath
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import (
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"errors"
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"net/http"
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"regexp"
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"strings"
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"github.com/micro/go-micro/v2/api/resolver"
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)
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func NewResolver(opts ...resolver.Option) resolver.Resolver {
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return &Resolver{opts: resolver.NewOptions(opts...)}
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}
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type Resolver struct {
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opts resolver.Options
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}
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var (
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re = regexp.MustCompile("^v[0-9]+$")
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)
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func (r *Resolver) Resolve(req *http.Request) (*resolver.Endpoint, error) {
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if req.URL.Path == "/" {
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return nil, errors.New("unknown name")
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}
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parts := strings.Split(req.URL.Path[1:], "/")
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if len(parts) == 1 {
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return &resolver.Endpoint{
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Name: r.withNamespace(req, parts...),
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Host: req.Host,
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Method: req.Method,
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Path: req.URL.Path,
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}, nil
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}
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// /v1/foo
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if re.MatchString(parts[0]) {
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return &resolver.Endpoint{
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Name: r.withNamespace(req, parts[0:2]...),
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Host: req.Host,
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Method: req.Method,
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Path: req.URL.Path,
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}, nil
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}
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return &resolver.Endpoint{
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Name: r.withNamespace(req, parts[0]),
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Host: req.Host,
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Method: req.Method,
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Path: req.URL.Path,
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}, nil
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}
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func (r *Resolver) String() string {
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return "path"
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}
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func (r *Resolver) withNamespace(req *http.Request, parts ...string) string {
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ns := r.opts.Namespace(req)
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if len(ns) == 0 {
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return strings.Join(parts, ".")
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}
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return strings.Join(append([]string{ns}, parts...), ".")
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}
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