micro/api/resolver/vpath/vpath.go
Vasiliy Tolstov 4ec4c277b7 lint: fix all major issues
Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
2021-02-14 16:16:01 +03:00

78 lines
1.6 KiB
Go

// Package vpath resolves using http path and recognised versioned urls
package vpath
import (
"errors"
"net/http"
"regexp"
"strings"
"github.com/unistack-org/micro/v3/api/resolver"
)
// NewResolver creates new vpath api resolver
func NewResolver(opts ...resolver.Option) resolver.Resolver {
return &vpathResolver{opts: resolver.NewOptions(opts...)}
}
type vpathResolver struct {
opts resolver.Options
}
var (
re = regexp.MustCompile("^v[0-9]+$")
)
// Resolve endpoint
func (r *vpathResolver) Resolve(req *http.Request, opts ...resolver.ResolveOption) (*resolver.Endpoint, error) {
if req.URL.Path == "/" {
return nil, errors.New("unknown name")
}
options := resolver.NewResolveOptions(opts...)
parts := strings.Split(req.URL.Path[1:], "/")
if len(parts) == 1 {
return &resolver.Endpoint{
Name: r.withPrefix(parts...),
Host: req.Host,
Method: req.Method,
Path: req.URL.Path,
Domain: options.Domain,
}, nil
}
// /v1/foo
if re.MatchString(parts[0]) {
return &resolver.Endpoint{
Name: r.withPrefix(parts[0:2]...),
Host: req.Host,
Method: req.Method,
Path: req.URL.Path,
Domain: options.Domain,
}, nil
}
return &resolver.Endpoint{
Name: r.withPrefix(parts[0]),
Host: req.Host,
Method: req.Method,
Path: req.URL.Path,
Domain: options.Domain,
}, nil
}
func (r *vpathResolver) String() string {
return "vpath"
}
// withPrefix transforms "foo" into "go.micro.api.foo"
func (r *vpathResolver) withPrefix(parts ...string) string {
p := r.opts.ServicePrefix
if len(p) > 0 {
parts = append([]string{p}, parts...)
}
return strings.Join(parts, ".")
}