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siteinfo.go
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siteinfo.go
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// Copyright 2018-2020 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 data
import (
"encoding/json"
"sort"
"github.com/cs3org/reva/v2/pkg/mentix/utils/network"
"github.com/pkg/errors"
)
// SiteInformation holds the most basic information about a site.
type SiteInformation struct {
ID string
Name string
FullName string
}
// QueryAvailableSites uses Mentix to query a list of all available (registered) sites.
func QueryAvailableSites(mentixHost, dataEndpoint string) ([]SiteInformation, error) {
mentixURL, err := network.GenerateURL(mentixHost, dataEndpoint, network.URLParams{})
if err != nil {
return nil, errors.Wrap(err, "unable to generate Mentix URL")
}
data, err := network.ReadEndpoint(mentixURL, nil, true)
if err != nil {
return nil, errors.Wrap(err, "unable to read the Mentix endpoint")
}
// Decode the data into a simplified, reduced data type
type siteData struct {
Sites []SiteInformation
}
sites := siteData{}
if err := json.Unmarshal(data, &sites); err != nil {
return nil, errors.Wrap(err, "error while decoding the JSON data")
}
// Sort the sites alphabetically by their names
sort.Slice(sites.Sites, func(i, j int) bool {
return sites.Sites[i].Name < sites.Sites[j].Name
})
return sites.Sites, nil
}
// QuerySiteName uses Mentix to query the name of a site given by its ID.
func QuerySiteName(siteID string, fullName bool, mentixHost, dataEndpoint string) (string, error) {
sites, err := QueryAvailableSites(mentixHost, dataEndpoint)
if err != nil {
return "", err
}
index := len(sites)
for i, site := range sites {
if site.ID == siteID {
index = i
break
}
}
if index != len(sites) {
if fullName {
return sites[index].FullName, nil
}
return sites[index].Name, nil
}
return "", errors.Errorf("no site with ID %v found", siteID)
}