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/*
GoToSocial
Copyright (C) 2021-2023 GoToSocial Authors admin@gotosocial.org
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package stream
import "sync"
const (
// EventTypeNotification -- a user should be shown a notification
EventTypeNotification string = "notification"
// EventTypeUpdate -- a user should be shown an update in their timeline
EventTypeUpdate string = "update"
// EventTypeDelete -- something should be deleted from a user
EventTypeDelete string = "delete"
)
const (
// TimelineLocal -- public statuses from the LOCAL timeline.
TimelineLocal string = "public:local"
// TimelinePublic -- public statuses, including federated ones.
TimelinePublic string = "public"
// TimelineHome -- statuses for a user's Home timeline.
TimelineHome string = "user"
// TimelineNotifications -- notification events.
TimelineNotifications string = "user:notification"
// TimelineDirect -- statuses sent to a user directly.
TimelineDirect string = "direct"
)
// AllStatusTimelines contains all Timelines that a status could conceivably be delivered to -- useful for doing deletes.
var AllStatusTimelines = []string{
TimelineLocal,
TimelinePublic,
TimelineHome,
TimelineDirect,
}
// StreamsForAccount is a wrapper for the multiple streams that one account can have running at the same time.
// TODO: put a limit on this
type StreamsForAccount struct {
// The currently held streams for this account
Streams []*Stream
// Mutex to lock/unlock when modifying the slice of streams.
sync.Mutex
}
// Stream represents one open stream for a client.
type Stream struct {
// ID of this stream, generated during creation.
ID string
// A set of timelines of this stream: user/public/etc
// a matching key means the timeline is subscribed. The value
// is ignored
Timelines map[string]bool
// Channel of messages for the client to read from
Messages chan *Message
// Channel to close when the client drops away
Hangup chan interface{}
// Only put messages in the stream when Connected
Connected bool
// Mutex to lock/unlock when inserting messages, hanging up, changing the connected state etc.
sync.Mutex
}
// Message represents one streamed message.
type Message struct {
// All the stream types this message should be delivered to.
Stream []string `json:"stream"`
// The event type of the message (update/delete/notification etc)
Event string `json:"event"`
// The actual payload of the message. In case of an update or notification, this will be a JSON string.
Payload string `json:"payload"`
}
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