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meshdirectory.go
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meshdirectory.go
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// Copyright 2018-2023 CERN
//
// 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
//
// http://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.
//
// In applying this license, CERN does not waive the privileges and immunities
// granted to it by virtue of its status as an Intergovernmental Organization
// or submit itself to any jurisdiction.
package meshdirectory
import (
"encoding/json"
"fmt"
"net/http"
gateway "github.com/cs3org/go-cs3apis/cs3/gateway/v1beta1"
providerv1beta1 "github.com/cs3org/go-cs3apis/cs3/ocm/provider/v1beta1"
"github.com/cs3org/reva/internal/http/services/reqres"
"github.com/cs3org/reva/pkg/rgrpc/todo/pool"
"github.com/cs3org/reva/pkg/rhttp/global"
"github.com/cs3org/reva/pkg/rhttp/router"
"github.com/cs3org/reva/pkg/sharedconf"
"github.com/mitchellh/mapstructure"
"github.com/pkg/errors"
"github.com/rs/zerolog"
meshdirectoryweb "github.com/sciencemesh/meshdirectory-web"
)
func init() {
global.Register("meshdirectory", New)
}
type config struct {
Prefix string `mapstructure:"prefix"`
GatewaySvc string `mapstructure:"gatewaysvc"`
}
func (c *config) init() {
c.GatewaySvc = sharedconf.GetGatewaySVC(c.GatewaySvc)
if c.Prefix == "" {
c.Prefix = "meshdir"
}
}
type svc struct {
conf *config
}
func parseConfig(m map[string]interface{}) (*config, error) {
c := &config{}
if err := mapstructure.Decode(m, c); err != nil {
err = errors.Wrap(err, "error decoding conf")
return nil, err
}
return c, nil
}
// New returns a new Mesh Directory HTTP service.
func New(m map[string]interface{}, log *zerolog.Logger) (global.Service, error) {
c, err := parseConfig(m)
if err != nil {
return nil, err
}
c.init()
service := &svc{
conf: c,
}
return service, nil
}
// Service prefix.
func (s *svc) Prefix() string {
return s.conf.Prefix
}
// Unprotected endpoints.
func (s *svc) Unprotected() []string {
return []string{"/"}
}
// Close performs cleanup.
func (s *svc) Close() error {
return nil
}
func (s *svc) getClient() (gateway.GatewayAPIClient, error) {
return pool.GetGatewayServiceClient(pool.Endpoint(s.conf.GatewaySvc))
}
func (s *svc) serveJSON(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/json")
ctx := r.Context()
gatewayClient, err := s.getClient()
if err != nil {
reqres.WriteError(w, r, reqres.APIErrorServerError,
fmt.Sprintf("error getting grpc client on addr: %v", s.conf.GatewaySvc), err)
return
}
providers, err := gatewayClient.ListAllProviders(ctx, &providerv1beta1.ListAllProvidersRequest{})
if err != nil {
reqres.WriteError(w, r, reqres.APIErrorServerError, "error listing all providers", err)
return
}
jsonResponse, err := json.Marshal(providers.Providers)
if err != nil {
reqres.WriteError(w, r, reqres.APIErrorServerError, "error marshalling providers data", err)
return
}
// Write response
_, err = w.Write(jsonResponse)
if err != nil {
reqres.WriteError(w, r, reqres.APIErrorServerError, "error writing providers data", err)
return
}
w.WriteHeader(http.StatusOK)
}
// HTTP service handler.
func (s *svc) Handler() http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
var head string
head, r.URL.Path = router.ShiftPath(r.URL.Path)
switch head {
case "providers":
s.serveJSON(w, r)
return
default:
r.URL.Path = head + r.URL.Path
meshdirectoryweb.ServeMeshDirectorySPA(w, r)
return
}
})
}