mirror of
https://github.com/strukturag/nextcloud-spreed-signaling
synced 2026-03-14 14:35:44 +01:00
131 lines
3.5 KiB
Go
131 lines
3.5 KiB
Go
/**
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* Standalone signaling server for the Nextcloud Spreed app.
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* Copyright (C) 2025 struktur AG
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*
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* @author Joachim Bauch <bauch@struktur.de>
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*
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* @license GNU AGPL version 3 or any later version
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package etcd
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import (
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"context"
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"errors"
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"fmt"
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"net/url"
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"slices"
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"github.com/strukturag/nextcloud-spreed-signaling/api"
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"github.com/strukturag/nextcloud-spreed-signaling/internal"
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clientv3 "go.etcd.io/etcd/client/v3"
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)
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type ClientListener interface {
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EtcdClientCreated(client Client)
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}
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type ClientWatcher interface {
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EtcdWatchCreated(client Client, key string)
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EtcdKeyUpdated(client Client, key string, value []byte, prevValue []byte)
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EtcdKeyDeleted(client Client, key string, prevValue []byte)
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}
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type Client interface {
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IsConfigured() bool
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WaitForConnection(ctx context.Context) error
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GetServerInfoEtcd() *BackendServerInfoEtcd
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Close() error
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AddListener(listener ClientListener)
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RemoveListener(listener ClientListener)
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Get(ctx context.Context, key string, opts ...clientv3.OpOption) (*clientv3.GetResponse, error)
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Watch(ctx context.Context, key string, nextRevision int64, watcher ClientWatcher, opts ...clientv3.OpOption) (int64, error)
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}
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// Information on a backend in the etcd cluster.
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type BackendInformationEtcd struct {
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// Compat setting.
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Url string `json:"url,omitempty"`
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Urls []string `json:"urls,omitempty"`
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ParsedUrls []*url.URL `json:"-"`
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Secret string `json:"secret"`
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MaxStreamBitrate api.Bandwidth `json:"maxstreambitrate,omitempty"`
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MaxScreenBitrate api.Bandwidth `json:"maxscreenbitrate,omitempty"`
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SessionLimit uint64 `json:"sessionlimit,omitempty"`
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}
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func (p *BackendInformationEtcd) CheckValid() (err error) {
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if p.Secret == "" {
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return errors.New("secret missing")
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}
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if len(p.Urls) > 0 {
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slices.Sort(p.Urls)
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p.Urls = slices.Compact(p.Urls)
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seen := make(map[string]bool)
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outIdx := 0
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for _, u := range p.Urls {
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parsedUrl, err := url.Parse(u)
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if err != nil {
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return fmt.Errorf("invalid url %s: %w", u, err)
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}
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var changed bool
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if parsedUrl, changed = internal.CanonicalizeUrl(parsedUrl); changed {
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u = parsedUrl.String()
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}
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p.Urls[outIdx] = u
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if seen[u] {
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continue
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}
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seen[u] = true
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p.ParsedUrls = append(p.ParsedUrls, parsedUrl)
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outIdx++
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}
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if len(p.Urls) != outIdx {
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clear(p.Urls[outIdx:])
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p.Urls = p.Urls[:outIdx]
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}
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} else if p.Url != "" {
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parsedUrl, err := url.Parse(p.Url)
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if err != nil {
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return fmt.Errorf("invalid url: %w", err)
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}
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var changed bool
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if parsedUrl, changed = internal.CanonicalizeUrl(parsedUrl); changed {
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p.Url = parsedUrl.String()
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}
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p.Urls = append(p.Urls, p.Url)
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p.ParsedUrls = append(p.ParsedUrls, parsedUrl)
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} else {
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return errors.New("urls missing")
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}
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return nil
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}
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type BackendServerInfoEtcd struct {
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Endpoints []string `json:"endpoints"`
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Active string `json:"active,omitempty"`
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Connected *bool `json:"connected,omitempty"`
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}
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