micro/network/resolver/http/http.go

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// Package http resolves names to network addresses using a http request
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package http
import (
"encoding/json"
"io/ioutil"
"net/http"
"net/url"
"github.com/micro/go-micro/network/resolver"
)
// Resolver is a HTTP network resolver
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type Resolver struct {
// If not set, defaults to http
Proto string
// Path sets the path to lookup. Defaults to /network
Path string
}
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// Resolve assumes ID is a domain which can be converted to a http://name/network request
func (r *Resolver) Resolve(name string) ([]*resolver.Record, error) {
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proto := "http"
path := "/network"
if len(r.Proto) > 0 {
proto = r.Proto
}
if len(r.Path) > 0 {
path = r.Path
}
uri := &url.URL{
Scheme: proto,
Path: path,
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Host: name,
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}
rsp, err := http.Get(uri.String())
if err != nil {
return nil, err
}
defer rsp.Body.Close()
b, err := ioutil.ReadAll(rsp.Body)
if err != nil {
return nil, err
}
// encoding format is assumed to be json
var records []*resolver.Record
if err := json.Unmarshal(b, &records); err != nil {
return nil, err
}
return records, nil
}