micro/api/resolver/grpc/grpc.go

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// Package grpc resolves a grpc service like /greeter.Say/Hello to greeter service
package grpc // import "go.unistack.org/micro/v3/api/resolver/grpc"
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import (
"errors"
"net/http"
"strings"
"go.unistack.org/micro/v3/api/resolver"
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)
// Resolver struct
type Resolver struct {
opts resolver.Options
}
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// Resolve func to resolve enndpoint
func (r *Resolver) Resolve(req *http.Request, opts ...resolver.ResolveOption) (*resolver.Endpoint, error) {
// parse options
options := resolver.NewResolveOptions(opts...)
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// /foo.Bar/Service
if req.URL.Path == "/" {
return nil, errors.New("unknown name")
}
// [foo.Bar, Service]
parts := strings.Split(req.URL.Path[1:], "/")
// [foo, Bar]
name := strings.Split(parts[0], ".")
// foo
return &resolver.Endpoint{
Name: strings.Join(name[:len(name)-1], "."),
Host: req.Host,
Method: req.Method,
Path: req.URL.Path,
Domain: options.Domain,
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}, nil
}
func (r *Resolver) String() string {
return "grpc"
}
// NewResolver is used to create new Resolver
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func NewResolver(opts ...resolver.Option) resolver.Resolver {
return &Resolver{opts: resolver.NewOptions(opts...)}
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}