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// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
// See LICENSE.txt for license information.
package model
import (
"encoding/json"
"fmt"
"io"
)
const (
WebsocketEventTyping = "typing"
WebsocketEventPosted = "posted"
WebsocketEventPostEdited = "post_edited"
WebsocketEventPostDeleted = "post_deleted"
WebsocketEventPostUnread = "post_unread"
WebsocketEventChannelConverted = "channel_converted"
WebsocketEventChannelCreated = "channel_created"
WebsocketEventChannelDeleted = "channel_deleted"
WebsocketEventChannelRestored = "channel_restored"
WebsocketEventChannelUpdated = "channel_updated"
WebsocketEventChannelMemberUpdated = "channel_member_updated"
WebsocketEventChannelSchemeUpdated = "channel_scheme_updated"
WebsocketEventDirectAdded = "direct_added"
WebsocketEventGroupAdded = "group_added"
WebsocketEventNewUser = "new_user"
WebsocketEventAddedToTeam = "added_to_team"
WebsocketEventLeaveTeam = "leave_team"
WebsocketEventUpdateTeam = "update_team"
WebsocketEventDeleteTeam = "delete_team"
WebsocketEventRestoreTeam = "restore_team"
WebsocketEventUpdateTeamScheme = "update_team_scheme"
WebsocketEventUserAdded = "user_added"
WebsocketEventUserUpdated = "user_updated"
WebsocketEventUserRoleUpdated = "user_role_updated"
WebsocketEventMemberroleUpdated = "memberrole_updated"
WebsocketEventUserRemoved = "user_removed"
WebsocketEventPreferenceChanged = "preference_changed"
WebsocketEventPreferencesChanged = "preferences_changed"
WebsocketEventPreferencesDeleted = "preferences_deleted"
WebsocketEventEphemeralMessage = "ephemeral_message"
WebsocketEventStatusChange = "status_change"
WebsocketEventHello = "hello"
WebsocketAuthenticationChallenge = "authentication_challenge"
WebsocketEventReactionAdded = "reaction_added"
WebsocketEventReactionRemoved = "reaction_removed"
WebsocketEventResponse = "response"
WebsocketEventEmojiAdded = "emoji_added"
WebsocketEventChannelViewed = "channel_viewed"
WebsocketEventPluginStatusesChanged = "plugin_statuses_changed"
WebsocketEventPluginEnabled = "plugin_enabled"
WebsocketEventPluginDisabled = "plugin_disabled"
WebsocketEventRoleUpdated = "role_updated"
WebsocketEventLicenseChanged = "license_changed"
WebsocketEventConfigChanged = "config_changed"
WebsocketEventOpenDialog = "open_dialog"
WebsocketEventGuestsDeactivated = "guests_deactivated"
WebsocketEventUserActivationStatusChange = "user_activation_status_change"
WebsocketEventReceivedGroup = "received_group"
WebsocketEventReceivedGroupAssociatedToTeam = "received_group_associated_to_team"
WebsocketEventReceivedGroupNotAssociatedToTeam = "received_group_not_associated_to_team"
WebsocketEventReceivedGroupAssociatedToChannel = "received_group_associated_to_channel"
WebsocketEventReceivedGroupNotAssociatedToChannel = "received_group_not_associated_to_channel"
WebsocketEventSidebarCategoryCreated = "sidebar_category_created"
WebsocketEventSidebarCategoryUpdated = "sidebar_category_updated"
WebsocketEventSidebarCategoryDeleted = "sidebar_category_deleted"
WebsocketEventSidebarCategoryOrderUpdated = "sidebar_category_order_updated"
WebsocketWarnMetricStatusReceived = "warn_metric_status_received"
WebsocketWarnMetricStatusRemoved = "warn_metric_status_removed"
WebsocketEventCloudPaymentStatusUpdated = "cloud_payment_status_updated"
WebsocketEventThreadUpdated = "thread_updated"
WebsocketEventThreadFollowChanged = "thread_follow_changed"
WebsocketEventThreadReadChanged = "thread_read_changed"
WebsocketFirstAdminVisitMarketplaceStatusReceived = "first_admin_visit_marketplace_status_received"
)
type WebSocketMessage interface {
ToJSON() ([]byte, error)
IsValid() bool
EventType() string
}
type WebsocketBroadcast struct {
OmitUsers map[string]bool `json:"omit_users"` // broadcast is omitted for users listed here
UserId string `json:"user_id"` // broadcast only occurs for this user
ChannelId string `json:"channel_id"` // broadcast only occurs for users in this channel
TeamId string `json:"team_id"` // broadcast only occurs for users in this team
ContainsSanitizedData bool `json:"-"`
ContainsSensitiveData bool `json:"-"`
}
type precomputedWebSocketEventJSON struct {
Event json.RawMessage
Data json.RawMessage
Broadcast json.RawMessage
}
// webSocketEventJSON mirrors WebSocketEvent to make some of its unexported fields serializable
type webSocketEventJSON struct {
Event string `json:"event"`
Data map[string]interface{} `json:"data"`
Broadcast *WebsocketBroadcast `json:"broadcast"`
Sequence int64 `json:"seq"`
}
type WebSocketEvent struct {
event string
data map[string]interface{}
broadcast *WebsocketBroadcast
sequence int64
precomputedJSON *precomputedWebSocketEventJSON
}
// PrecomputeJSON precomputes and stores the serialized JSON for all fields other than Sequence.
// This makes ToJSON much more efficient when sending the same event to multiple connections.
func (ev *WebSocketEvent) PrecomputeJSON() *WebSocketEvent {
copy := ev.Copy()
event, _ := json.Marshal(copy.event)
data, _ := json.Marshal(copy.data)
broadcast, _ := json.Marshal(copy.broadcast)
copy.precomputedJSON = &precomputedWebSocketEventJSON{
Event: json.RawMessage(event),
Data: json.RawMessage(data),
Broadcast: json.RawMessage(broadcast),
}
return copy
}
func (ev *WebSocketEvent) Add(key string, value interface{}) {
ev.data[key] = value
}
func NewWebSocketEvent(event, teamId, channelId, userId string, omitUsers map[string]bool) *WebSocketEvent {
return &WebSocketEvent{
event: event,
data: make(map[string]interface{}),
broadcast: &WebsocketBroadcast{
TeamId: teamId,
ChannelId: channelId,
UserId: userId,
OmitUsers: omitUsers},
}
}
func (ev *WebSocketEvent) Copy() *WebSocketEvent {
copy := &WebSocketEvent{
event: ev.event,
data: ev.data,
broadcast: ev.broadcast,
sequence: ev.sequence,
precomputedJSON: ev.precomputedJSON,
}
return copy
}
func (ev *WebSocketEvent) GetData() map[string]interface{} {
return ev.data
}
func (ev *WebSocketEvent) GetBroadcast() *WebsocketBroadcast {
return ev.broadcast
}
func (ev *WebSocketEvent) GetSequence() int64 {
return ev.sequence
}
func (ev *WebSocketEvent) SetEvent(event string) *WebSocketEvent {
copy := ev.Copy()
copy.event = event
return copy
}
func (ev *WebSocketEvent) SetData(data map[string]interface{}) *WebSocketEvent {
copy := ev.Copy()
copy.data = data
return copy
}
func (ev *WebSocketEvent) SetBroadcast(broadcast *WebsocketBroadcast) *WebSocketEvent {
copy := ev.Copy()
copy.broadcast = broadcast
return copy
}
func (ev *WebSocketEvent) SetSequence(seq int64) *WebSocketEvent {
copy := ev.Copy()
copy.sequence = seq
return copy
}
func (ev *WebSocketEvent) IsValid() bool {
return ev.event != ""
}
func (ev *WebSocketEvent) EventType() string {
return ev.event
}
func (ev *WebSocketEvent) ToJSON() ([]byte, error) {
if ev.precomputedJSON != nil {
return []byte(fmt.Sprintf(`{"event": %s, "data": %s, "broadcast": %s, "seq": %d}`, ev.precomputedJSON.Event, ev.precomputedJSON.Data, ev.precomputedJSON.Broadcast, ev.GetSequence())), nil
}
return json.Marshal(webSocketEventJSON{
ev.event,
ev.data,
ev.broadcast,
ev.sequence,
})
}
// Encode encodes the event to the given encoder.
func (ev *WebSocketEvent) Encode(enc *json.Encoder) error {
if ev.precomputedJSON != nil {
return enc.Encode(json.RawMessage(
fmt.Sprintf(`{"event": %s, "data": %s, "broadcast": %s, "seq": %d}`, ev.precomputedJSON.Event, ev.precomputedJSON.Data, ev.precomputedJSON.Broadcast, ev.sequence),
))
}
return enc.Encode(webSocketEventJSON{
ev.event,
ev.data,
ev.broadcast,
ev.sequence,
})
}
func WebSocketEventFromJSON(data io.Reader) (*WebSocketEvent, error) {
var ev WebSocketEvent
var o webSocketEventJSON
if err := json.NewDecoder(data).Decode(&o); err != nil {
return nil, err
}
ev.event = o.Event
if u, ok := o.Data["user"]; ok {
// We need to convert to and from JSON again
// because the user is in the form of a map[string]interface{}.
buf, err := json.Marshal(u)
if err != nil {
return nil, err
}
var user User
if err = json.Unmarshal(buf, &user); err != nil {
return nil, err
}
o.Data["user"] = &user
}
ev.data = o.Data
ev.broadcast = o.Broadcast
ev.sequence = o.Sequence
return &ev, nil
}
// WebSocketResponse represents a response received through the WebSocket
// for a request made to the server. This is available through the ResponseChannel
// channel in WebSocketClient.
type WebSocketResponse struct {
Status string `json:"status"` // The status of the response. For example: OK, FAIL.
SeqReply int64 `json:"seq_reply,omitempty"` // A counter which is incremented for every response sent.
Data map[string]interface{} `json:"data,omitempty"` // The data contained in the response.
Error *AppError `json:"error,omitempty"` // A field that is set if any error has occurred.
}
func (m *WebSocketResponse) Add(key string, value interface{}) {
m.Data[key] = value
}
func NewWebSocketResponse(status string, seqReply int64, data map[string]interface{}) *WebSocketResponse {
return &WebSocketResponse{Status: status, SeqReply: seqReply, Data: data}
}
func NewWebSocketError(seqReply int64, err *AppError) *WebSocketResponse {
return &WebSocketResponse{Status: StatusFail, SeqReply: seqReply, Error: err}
}
func (m *WebSocketResponse) IsValid() bool {
return m.Status != ""
}
func (m *WebSocketResponse) EventType() string {
return WebsocketEventResponse
}
func (m *WebSocketResponse) ToJSON() ([]byte, error) {
return json.Marshal(m)
}
func WebSocketResponseFromJSON(data io.Reader) (*WebSocketResponse, error) {
var o *WebSocketResponse
return o, json.NewDecoder(data).Decode(&o)
}
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