github.com/demisto/mattermost-server@v4.9.0-rc3+incompatible/model/websocket_message.go (about)

     1  // Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
     2  // See License.txt for license information.
     3  
     4  package model
     5  
     6  import (
     7  	"encoding/json"
     8  	"fmt"
     9  	"io"
    10  )
    11  
    12  const (
    13  	WEBSOCKET_EVENT_TYPING                 = "typing"
    14  	WEBSOCKET_EVENT_POSTED                 = "posted"
    15  	WEBSOCKET_EVENT_POST_EDITED            = "post_edited"
    16  	WEBSOCKET_EVENT_POST_DELETED           = "post_deleted"
    17  	WEBSOCKET_EVENT_CHANNEL_DELETED        = "channel_deleted"
    18  	WEBSOCKET_EVENT_CHANNEL_CREATED        = "channel_created"
    19  	WEBSOCKET_EVENT_CHANNEL_UPDATED        = "channel_updated"
    20  	WEBSOCKET_EVENT_CHANNEL_MEMBER_UPDATED = "channel_member_updated"
    21  	WEBSOCKET_EVENT_DIRECT_ADDED           = "direct_added"
    22  	WEBSOCKET_EVENT_GROUP_ADDED            = "group_added"
    23  	WEBSOCKET_EVENT_NEW_USER               = "new_user"
    24  	WEBSOCKET_EVENT_ADDED_TO_TEAM          = "added_to_team"
    25  	WEBSOCKET_EVENT_LEAVE_TEAM             = "leave_team"
    26  	WEBSOCKET_EVENT_UPDATE_TEAM            = "update_team"
    27  	WEBSOCKET_EVENT_DELETE_TEAM            = "delete_team"
    28  	WEBSOCKET_EVENT_USER_ADDED             = "user_added"
    29  	WEBSOCKET_EVENT_USER_UPDATED           = "user_updated"
    30  	WEBSOCKET_EVENT_USER_ROLE_UPDATED      = "user_role_updated"
    31  	WEBSOCKET_EVENT_MEMBERROLE_UPDATED     = "memberrole_updated"
    32  	WEBSOCKET_EVENT_USER_REMOVED           = "user_removed"
    33  	WEBSOCKET_EVENT_PREFERENCE_CHANGED     = "preference_changed"
    34  	WEBSOCKET_EVENT_PREFERENCES_CHANGED    = "preferences_changed"
    35  	WEBSOCKET_EVENT_PREFERENCES_DELETED    = "preferences_deleted"
    36  	WEBSOCKET_EVENT_EPHEMERAL_MESSAGE      = "ephemeral_message"
    37  	WEBSOCKET_EVENT_STATUS_CHANGE          = "status_change"
    38  	WEBSOCKET_EVENT_HELLO                  = "hello"
    39  	WEBSOCKET_EVENT_WEBRTC                 = "webrtc"
    40  	WEBSOCKET_AUTHENTICATION_CHALLENGE     = "authentication_challenge"
    41  	WEBSOCKET_EVENT_REACTION_ADDED         = "reaction_added"
    42  	WEBSOCKET_EVENT_REACTION_REMOVED       = "reaction_removed"
    43  	WEBSOCKET_EVENT_RESPONSE               = "response"
    44  	WEBSOCKET_EVENT_EMOJI_ADDED            = "emoji_added"
    45  	WEBSOCKET_EVENT_CHANNEL_VIEWED         = "channel_viewed"
    46  	WEBSOCKET_EVENT_PLUGIN_ACTIVATED       = "plugin_activated"   // EXPERIMENTAL - SUBJECT TO CHANGE
    47  	WEBSOCKET_EVENT_PLUGIN_DEACTIVATED     = "plugin_deactivated" // EXPERIMENTAL - SUBJECT TO CHANGE
    48  	WEBSOCKET_EVENT_ROLE_UPDATED           = "role_updated"
    49  	WEBSOCKET_EVENT_LICENSE_CHANGED        = "license_changed"
    50  	WEBSOCKET_EVENT_CONFIG_CHANGED         = "config_changed"
    51  )
    52  
    53  type WebSocketMessage interface {
    54  	ToJson() string
    55  	IsValid() bool
    56  	EventType() string
    57  }
    58  
    59  type WebsocketBroadcast struct {
    60  	OmitUsers map[string]bool `json:"omit_users"` // broadcast is omitted for users listed here
    61  	UserId    string          `json:"user_id"`    // broadcast only occurs for this user
    62  	ChannelId string          `json:"channel_id"` // broadcast only occurs for users in this channel
    63  	TeamId    string          `json:"team_id"`    // broadcast only occurs for users in this team
    64  }
    65  
    66  type precomputedWebSocketEventJSON struct {
    67  	Event     json.RawMessage
    68  	Data      json.RawMessage
    69  	Broadcast json.RawMessage
    70  }
    71  
    72  type WebSocketEvent struct {
    73  	Event     string                 `json:"event"`
    74  	Data      map[string]interface{} `json:"data"`
    75  	Broadcast *WebsocketBroadcast    `json:"broadcast"`
    76  	Sequence  int64                  `json:"seq"`
    77  
    78  	precomputedJSON *precomputedWebSocketEventJSON
    79  }
    80  
    81  // PrecomputeJSON precomputes and stores the serialized JSON for all fields other than Sequence.
    82  // This makes ToJson much more efficient when sending the same event to multiple connections.
    83  func (m *WebSocketEvent) PrecomputeJSON() {
    84  	event, _ := json.Marshal(m.Event)
    85  	data, _ := json.Marshal(m.Data)
    86  	broadcast, _ := json.Marshal(m.Broadcast)
    87  	m.precomputedJSON = &precomputedWebSocketEventJSON{
    88  		Event:     json.RawMessage(event),
    89  		Data:      json.RawMessage(data),
    90  		Broadcast: json.RawMessage(broadcast),
    91  	}
    92  }
    93  
    94  func (m *WebSocketEvent) Add(key string, value interface{}) {
    95  	m.Data[key] = value
    96  }
    97  
    98  func NewWebSocketEvent(event, teamId, channelId, userId string, omitUsers map[string]bool) *WebSocketEvent {
    99  	return &WebSocketEvent{Event: event, Data: make(map[string]interface{}),
   100  		Broadcast: &WebsocketBroadcast{TeamId: teamId, ChannelId: channelId, UserId: userId, OmitUsers: omitUsers}}
   101  }
   102  
   103  func (o *WebSocketEvent) IsValid() bool {
   104  	return o.Event != ""
   105  }
   106  
   107  func (o *WebSocketEvent) EventType() string {
   108  	return o.Event
   109  }
   110  
   111  func (o *WebSocketEvent) ToJson() string {
   112  	if o.precomputedJSON != nil {
   113  		return fmt.Sprintf(`{"event": %s, "data": %s, "broadcast": %s, "seq": %d}`, o.precomputedJSON.Event, o.precomputedJSON.Data, o.precomputedJSON.Broadcast, o.Sequence)
   114  	}
   115  	b, _ := json.Marshal(o)
   116  	return string(b)
   117  }
   118  
   119  func WebSocketEventFromJson(data io.Reader) *WebSocketEvent {
   120  	var o *WebSocketEvent
   121  	json.NewDecoder(data).Decode(&o)
   122  	return o
   123  }
   124  
   125  type WebSocketResponse struct {
   126  	Status   string                 `json:"status"`
   127  	SeqReply int64                  `json:"seq_reply,omitempty"`
   128  	Data     map[string]interface{} `json:"data,omitempty"`
   129  	Error    *AppError              `json:"error,omitempty"`
   130  }
   131  
   132  func (m *WebSocketResponse) Add(key string, value interface{}) {
   133  	m.Data[key] = value
   134  }
   135  
   136  func NewWebSocketResponse(status string, seqReply int64, data map[string]interface{}) *WebSocketResponse {
   137  	return &WebSocketResponse{Status: status, SeqReply: seqReply, Data: data}
   138  }
   139  
   140  func NewWebSocketError(seqReply int64, err *AppError) *WebSocketResponse {
   141  	return &WebSocketResponse{Status: STATUS_FAIL, SeqReply: seqReply, Error: err}
   142  }
   143  
   144  func (o *WebSocketResponse) IsValid() bool {
   145  	return o.Status != ""
   146  }
   147  
   148  func (o *WebSocketResponse) EventType() string {
   149  	return WEBSOCKET_EVENT_RESPONSE
   150  }
   151  
   152  func (o *WebSocketResponse) ToJson() string {
   153  	b, _ := json.Marshal(o)
   154  	return string(b)
   155  }
   156  
   157  func WebSocketResponseFromJson(data io.Reader) *WebSocketResponse {
   158  	var o *WebSocketResponse
   159  	json.NewDecoder(data).Decode(&o)
   160  	return o
   161  }