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grpc.go
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grpc.go
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// Copyright 2020 Asim Aslam
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// Original source: github.com/micro/go-micro/v3/api/resolver/grpc/grpc.go
// Package grpc resolves a grpc service like /greeter.Say/Hello to greeter service
package grpc
import (
"errors"
"net/http"
"strings"
"github.com/micro/micro/v3/service/api/resolver"
)
type Resolver struct {
opts resolver.Options
}
func (r *Resolver) Resolve(req *http.Request, opts ...resolver.ResolveOption) (*resolver.Endpoint, error) {
// parse options
options := resolver.NewResolveOptions(opts...)
// /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,
}, nil
}
func (r *Resolver) String() string {
return "grpc"
}
func NewResolver(opts ...resolver.Option) resolver.Resolver {
return &Resolver{opts: resolver.NewOptions(opts...)}
}