mirror of
https://github.com/antos-rde/antosdk-apps.git
synced 2024-11-15 09:58:21 +01:00
637 lines
19 KiB
TypeScript
637 lines
19 KiB
TypeScript
/**
|
|
* Broadcast plugin for Antunnel to communication
|
|
* with the backend Antunnel broadcast publisher
|
|
*/
|
|
namespace Antunnel {
|
|
/**
|
|
* Broadcast control message type
|
|
*
|
|
* @export
|
|
* @enum {number}
|
|
*/
|
|
export enum BroadcastCTRLType {
|
|
SUBSCRIBE = 0x0A,
|
|
UNSUBSCRIBE = 0xB,
|
|
QUERY_USER = 0xC,
|
|
QUERY_GROUP = 0xD,
|
|
}
|
|
|
|
/**
|
|
* Group state
|
|
*
|
|
* @export
|
|
* @enum {number}
|
|
*/
|
|
export enum BroadcastGroupState {
|
|
INIT,
|
|
SUBSCRIBED,
|
|
UNSUBSCRIBED
|
|
}
|
|
|
|
|
|
/**
|
|
* Broadcast control message
|
|
*
|
|
* @export
|
|
* @interface BroadcastCTRLMsg
|
|
*/
|
|
export interface BroadcastCTRLMsg {
|
|
|
|
/**
|
|
* Message type
|
|
*
|
|
* @type {BroadcastCTRLType}
|
|
* @memberof BroadcastCTRLMsg
|
|
*/
|
|
type: BroadcastCTRLType;
|
|
|
|
/**
|
|
* Group name
|
|
*
|
|
* @type {string}
|
|
* @memberof BroadcastCTRLMsg
|
|
*/
|
|
group?: string;
|
|
|
|
/**
|
|
* User name
|
|
*
|
|
* @type {string}
|
|
* @memberof BroadcastCTRLMsg
|
|
*/
|
|
user: string;
|
|
|
|
/**
|
|
* group id - allocated by backend
|
|
*
|
|
* @type {number}
|
|
* @memberof BroadcastCTRLMsg
|
|
*/
|
|
id: number;
|
|
}
|
|
|
|
|
|
/**
|
|
* Broadcast group handle
|
|
*
|
|
* @export
|
|
* @class BroadcastGroup
|
|
*/
|
|
export class BroadcastGroup {
|
|
|
|
/**
|
|
* Group name
|
|
*
|
|
* @type {string}
|
|
* @memberof BroadcastGroup
|
|
*/
|
|
groupname: string;
|
|
|
|
/**
|
|
* Group id allocated by backend
|
|
*
|
|
* @type {number}
|
|
* @memberof BroadcastGroup
|
|
*/
|
|
id: number;
|
|
|
|
/**
|
|
* Active users of the group
|
|
*
|
|
* @type {Set<string>}
|
|
* @memberof BroadcastGroup
|
|
*/
|
|
users: Set<string>;
|
|
|
|
/**
|
|
* Called when grouped is opened by backend
|
|
*
|
|
* @memberof BroadcastGroup
|
|
*/
|
|
onready: () => void;
|
|
|
|
/**
|
|
* Called whe a message is sent to group
|
|
*
|
|
* @memberof BroadcastGroup
|
|
*/
|
|
onmessage: (data: Uint8Array) => void;
|
|
|
|
/**
|
|
* Called when user added to the group
|
|
*
|
|
* @memberof BroadcastGroup
|
|
*/
|
|
onuseradd: (user: string) => void;
|
|
|
|
/**
|
|
* Called when user is removed from the group
|
|
*
|
|
* @memberof BroadcastGroup
|
|
*/
|
|
onuserdel: (user: string) => void;
|
|
|
|
/**
|
|
* Called when handle owner left the group
|
|
*
|
|
* @memberof BroadcastGroup
|
|
*/
|
|
onclose: () => void;
|
|
|
|
/**
|
|
* Owner of this handle
|
|
*
|
|
* @type {string}
|
|
* @memberof BroadcastGroup
|
|
*/
|
|
user: string;
|
|
|
|
/**
|
|
* reference to the attached Broadcast manage
|
|
*
|
|
* @type {BroadcastManager}
|
|
* @memberof BroadcastGroup
|
|
*/
|
|
mgr: BroadcastManager;
|
|
|
|
/**
|
|
* Current state of the handle
|
|
*
|
|
* @type {BroadcastGroupState}
|
|
* @memberof BroadcastGroup
|
|
*/
|
|
state: BroadcastGroupState;
|
|
|
|
|
|
/**
|
|
* Creates an instance of BroadcastGroup.
|
|
* @param {string} name
|
|
* @memberof BroadcastGroup
|
|
*/
|
|
constructor(name: string) {
|
|
this.groupname = name;
|
|
this.users = new Set<string>();
|
|
this.onmessage = undefined;
|
|
this.onready = undefined;
|
|
this.onuseradd = undefined;
|
|
this.onuserdel = undefined;
|
|
this.onclose = undefined;
|
|
this.user = OS.setting.user.name;
|
|
this.mgr = undefined;
|
|
this.state = BroadcastGroupState.INIT;
|
|
}
|
|
|
|
|
|
/**
|
|
* Leave the group
|
|
*
|
|
* @return {*} {void}
|
|
* @memberof BroadcastGroup
|
|
*/
|
|
close(): void {
|
|
if (!this.mgr || !this.id) {
|
|
return;
|
|
}
|
|
this.mgr.unsubscribe(this.id);
|
|
}
|
|
|
|
|
|
/**
|
|
* Query all users in the group
|
|
*
|
|
* @return {*} {void}
|
|
* @memberof BroadcastGroup
|
|
*/
|
|
refresh(): void {
|
|
if (!this.mgr || !this.id) {
|
|
return;
|
|
}
|
|
this.mgr.query(this.id);
|
|
}
|
|
|
|
/**
|
|
* Send a message to the group
|
|
*
|
|
* @param {Uint8Array} data
|
|
* @memberof BroadcastGroup
|
|
*/
|
|
send(data: Uint8Array): void {
|
|
this.mgr.send(this.id, data);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Broadcast Manager
|
|
* Managing all group handles created by the current
|
|
* user
|
|
*
|
|
* @export
|
|
* @class BroadcastManager
|
|
*/
|
|
export class BroadcastManager {
|
|
|
|
/**
|
|
* Reference to Antunnel subscriber
|
|
*
|
|
* @private
|
|
* @type {SubscriberInterface}
|
|
* @memberof BroadcastManager
|
|
*/
|
|
private sub: SubscriberInterface;
|
|
|
|
/**
|
|
* channel name
|
|
*
|
|
* @private
|
|
* @type {string}
|
|
* @memberof BroadcastManager
|
|
*/
|
|
private channel: string;
|
|
|
|
/**
|
|
* Reference to the global tunnel handle
|
|
*
|
|
* @private
|
|
* @type {AntunnelAPI}
|
|
* @memberof BroadcastManager
|
|
*/
|
|
private tunnel: AntunnelAPI;
|
|
|
|
/**
|
|
* list of all registered group handles
|
|
*
|
|
* @private
|
|
* @type {{[prop: number]: BroadcastGroup}}
|
|
* @memberof BroadcastManager
|
|
*/
|
|
groups: { [prop: number]: BroadcastGroup };
|
|
|
|
/**
|
|
* temporary list of group handles that wait for
|
|
* an connection confirmation from the backend
|
|
*
|
|
* @private
|
|
* @type {GenericObject<BroadcastGroup>}
|
|
* @memberof BroadcastManager
|
|
*/
|
|
private pendings: GenericObject<BroadcastGroup>;
|
|
|
|
/**
|
|
* callback handle when a group is added to the
|
|
* manager
|
|
*
|
|
* @private
|
|
* @type (group: BroadcastGroup)=> void
|
|
* @memberof BroadcastManager
|
|
*/
|
|
ongroupadd: (group: BroadcastGroup)=> void;
|
|
|
|
/**
|
|
* callback handle when a group is removed from the
|
|
* manager
|
|
*
|
|
* @private
|
|
* @type (group: BroadcastGroup)=> void
|
|
* @memberof BroadcastManager
|
|
*/
|
|
ongroupdel: (group: BroadcastGroup)=> void;
|
|
|
|
/**
|
|
* Creates an instance of BroadcastManager.
|
|
* @param {string} channel
|
|
* @memberof BroadcastManager
|
|
*/
|
|
constructor(channel: string) {
|
|
this.sub = undefined;
|
|
this.channel = channel;
|
|
this.tunnel = undefined;
|
|
this.groups = {};
|
|
this.pendings = {};
|
|
this.ongroupadd = undefined;
|
|
this.ongroupdel = undefined;
|
|
}
|
|
|
|
/**
|
|
* Connect to the broadcast channel
|
|
*
|
|
* @private
|
|
* @param {(d: any)=> void} resolve
|
|
* @memberof BroadcastManager
|
|
*/
|
|
private connect(resolve: (d: any) => void): void {
|
|
this.sub = new Subscriber(this.channel);
|
|
this.sub.onopen = () => {
|
|
OS.announcer.osinfo(__("Subscriber {0}: Connected to the {1} channel", this.sub.id, this.channel));
|
|
resolve(true);
|
|
};
|
|
|
|
this.sub.onerror = (e:AntunnelMSG) => {
|
|
let err: any = e;
|
|
if(e.data)
|
|
{
|
|
err = new TextDecoder("utf-8").decode(e.data);
|
|
}
|
|
OS.announcer.oserror(
|
|
__("Subscriber {0}: Error from the {1} channel: {2}",
|
|
this.sub.id, this.channel, err), undefined);
|
|
}
|
|
|
|
this.sub.onmessage = (e: GenericObject<any>) => {
|
|
if (e.data) {
|
|
let gid = Antunnel.Msg.int_from(e.data.slice(0, 4), 0, 4);
|
|
let g_handle = this.groups[gid];
|
|
if (!g_handle)
|
|
return;
|
|
if (g_handle.onmessage) {
|
|
g_handle.onmessage(e.data.slice(4));
|
|
}
|
|
}
|
|
}
|
|
this.sub.onctrl = (d) => {
|
|
let msg: BroadcastCTRLMsg = {
|
|
user: undefined,
|
|
group: undefined,
|
|
type: d.data[0] as BroadcastCTRLType,
|
|
id: undefined
|
|
}
|
|
switch (msg.type) {
|
|
case BroadcastCTRLType.SUBSCRIBE:
|
|
case BroadcastCTRLType.UNSUBSCRIBE:
|
|
let offset = d.data[1] + 2;
|
|
msg.user = new TextDecoder("utf-8").decode(d.data.slice(2, offset));
|
|
msg.id = Antunnel.Msg.int_from(d.data, offset, 4);
|
|
offset += 4;
|
|
msg.group = new TextDecoder("utf-8").decode(d.data.slice(offset));
|
|
if (msg.type === BroadcastCTRLType.SUBSCRIBE) {
|
|
let g_handle = this.pendings[msg.group];
|
|
if (g_handle && g_handle.user === msg.user) {
|
|
g_handle.id = msg.id;
|
|
this.pendings[msg.group] = undefined;
|
|
delete this.pendings[msg.group];
|
|
this.groups[msg.id] = g_handle;
|
|
g_handle.state = BroadcastGroupState.SUBSCRIBED;
|
|
if(this.ongroupadd)
|
|
{
|
|
this.ongroupadd(g_handle);
|
|
}
|
|
g_handle.onready();
|
|
}
|
|
g_handle = this.groups[msg.id];
|
|
if (!g_handle) {
|
|
// create the group handle
|
|
g_handle = new BroadcastGroup(msg.group);
|
|
g_handle.id = msg.id;
|
|
g_handle.state = BroadcastGroupState.SUBSCRIBED;
|
|
g_handle.mgr = this;
|
|
this.groups[msg.id] = g_handle;
|
|
if(this.ongroupadd)
|
|
{
|
|
this.ongroupadd(g_handle);
|
|
}
|
|
if(g_handle.onready)
|
|
{
|
|
g_handle.onready();
|
|
}
|
|
}
|
|
if(!g_handle.users.has(msg.user))
|
|
{
|
|
g_handle.users.add(msg.user);
|
|
if (g_handle.onuseradd)
|
|
g_handle.onuseradd(msg.user);
|
|
}
|
|
}
|
|
else {
|
|
let g_handle = this.groups[msg.id];
|
|
if (!g_handle) {
|
|
return;
|
|
}
|
|
if (g_handle.user === msg.user) {
|
|
OS.announcer.osinfo(__("Subcriber {0}: leave group {1}", this.sub.id, msg.group));
|
|
this.groups[msg.id] = undefined;
|
|
delete this.groups[msg.id];
|
|
g_handle.state = BroadcastGroupState.UNSUBSCRIBED;
|
|
if (g_handle.onclose)
|
|
g_handle.onclose();
|
|
if(this.ongroupdel)
|
|
{
|
|
this.ongroupdel(g_handle);
|
|
}
|
|
}
|
|
else {
|
|
g_handle.users.delete(msg.user);
|
|
if (g_handle.onuserdel)
|
|
g_handle.onuserdel(msg.user);
|
|
}
|
|
}
|
|
break;
|
|
case BroadcastCTRLType.QUERY_USER:
|
|
msg.id = Antunnel.Msg.int_from(d.data, 1, 4);
|
|
msg.user = new TextDecoder("utf-8").decode(d.data.slice(5));
|
|
let g_handle = this.groups[msg.id];
|
|
if (!g_handle)
|
|
return;
|
|
if (!g_handle.users.has(msg.user)) {
|
|
g_handle.users.add(msg.user);
|
|
if (g_handle.onuseradd)
|
|
g_handle.onuseradd(msg.user);
|
|
}
|
|
break;
|
|
case BroadcastCTRLType.QUERY_GROUP:
|
|
msg.id = Antunnel.Msg.int_from(d.data, 1, 4);
|
|
msg.group = new TextDecoder("utf-8").decode(d.data.slice(5));
|
|
if (this.groups[msg.id])
|
|
return;
|
|
this.groups[msg.id] = new BroadcastGroup(msg.group);
|
|
this.groups[msg.id].id = msg.id;
|
|
this.groups[msg.id].state = BroadcastGroupState.SUBSCRIBED;
|
|
this.groups[msg.id].mgr = this;
|
|
if(this.ongroupadd)
|
|
{
|
|
this.ongroupadd(this.groups[msg.id]);
|
|
}
|
|
if(this.groups[msg.id].onready)
|
|
{
|
|
this.groups[msg.id].onready();
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
this.sub.onclose = () => {
|
|
OS.announcer.osinfo(__("Subscriber {0}: Connection to {1} closed", this.sub.id, this.channel));
|
|
this.sub = undefined;
|
|
}
|
|
this.tunnel.subscribe(this.sub);
|
|
}
|
|
|
|
/**
|
|
* Perform setup of the manager:
|
|
* - Check if Antunnel API is available
|
|
* - Connect to the tunnel if the global tunnel does not exists
|
|
* - Subscribe to th e broadcast channel if not done
|
|
*
|
|
* @return {*} {Promise<any>}
|
|
* @memberof BroadcastManager
|
|
*/
|
|
setup(): Promise<any> {
|
|
return new Promise(async (resolve, reject) => {
|
|
try {
|
|
if (!Antunnel) {
|
|
throw new Error(__("Library not fould: %s", "Antunnel").__());
|
|
}
|
|
if (!Antunnel.tunnel) {
|
|
await OS.GUI.pushService("Antunnel/AntunnelService");
|
|
let uri = (OS.setting.system as any).tunnel_uri as string;
|
|
if (!uri) {
|
|
throw new Error(__("Unable to connect to: %s", "Antunnel").__());
|
|
}
|
|
await Antunnel.init(uri);
|
|
this.tunnel = Antunnel.tunnel;
|
|
}
|
|
else {
|
|
this.tunnel = Antunnel.tunnel;
|
|
}
|
|
if (!this.sub) {
|
|
this.connect(resolve);
|
|
}
|
|
else {
|
|
resolve(true);
|
|
}
|
|
}
|
|
catch (e) {
|
|
if (Antunnel.tunnel)
|
|
Antunnel.tunnel.close();
|
|
reject(__e(e));
|
|
}
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Remove a group handle from the manager
|
|
*
|
|
* @param {number} gid
|
|
* @memberof BroadcastManager
|
|
*/
|
|
unsubscribe(gid: number): void {
|
|
let arr = new Uint8Array(5);
|
|
arr[0] = BroadcastCTRLType.UNSUBSCRIBE;
|
|
arr.set(Antunnel.Msg.bytes_of(gid, 4), 1);
|
|
this.sub.send(Antunnel.Msg.CTRL, arr);
|
|
}
|
|
|
|
|
|
/**
|
|
* Query users in the specific group
|
|
*
|
|
* @param {number} gid group id
|
|
* @memberof BroadcastManager
|
|
*/
|
|
query(gid: number): void {
|
|
let arr = new Uint8Array(5);
|
|
arr[0] = BroadcastCTRLType.QUERY_USER;
|
|
arr.set(Antunnel.Msg.bytes_of(gid, 4), 1);
|
|
this.sub.send(Antunnel.Msg.CTRL, arr);
|
|
}
|
|
|
|
/**
|
|
* Query all groups of the current user
|
|
*
|
|
* @memberof BroadcastManager
|
|
*/
|
|
refresh(): void
|
|
{
|
|
let arr = new Uint8Array(1);
|
|
arr[0] = BroadcastCTRLType.QUERY_GROUP;
|
|
this.sub.send(Antunnel.Msg.CTRL, arr);
|
|
}
|
|
/**
|
|
* Register a group to the manager
|
|
*
|
|
* @param {string} group
|
|
* @memberof BroadcastManager
|
|
*/
|
|
subscribe(group: string): void {
|
|
let arr = new Uint8Array(group.length + 1);
|
|
arr[0] = BroadcastCTRLType.SUBSCRIBE;
|
|
arr.set(new TextEncoder().encode(group), 1);
|
|
this.sub.send(Antunnel.Msg.CTRL, arr);
|
|
let handle = new BroadcastGroup(group);
|
|
handle.mgr = this;
|
|
this.pendings[group] = handle;
|
|
}
|
|
|
|
|
|
/**
|
|
*CLeanup the manager
|
|
*
|
|
* @memberof BroadcastManager
|
|
*/
|
|
teardown(): void {
|
|
if (this.sub) {
|
|
this.sub.close();
|
|
}
|
|
this.groups = {};
|
|
this.pendings = {};
|
|
}
|
|
|
|
/**
|
|
* return the current subscriber ID
|
|
*
|
|
* @memberof BroadcastManager
|
|
* @return {number}
|
|
*/
|
|
id(): number
|
|
{
|
|
if(this.sub)
|
|
{
|
|
return this.sub.id;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Send a message to a specific group
|
|
*
|
|
* @param {number} gid
|
|
* @param {Uint8Array} data
|
|
* @memberof BroadcastManager
|
|
*/
|
|
send(gid: number, data: Uint8Array): void {
|
|
let arr = new Uint8Array(data.length + 4);
|
|
arr.set(Antunnel.Msg.bytes_of(gid, 4), 0);
|
|
arr.set(data, 4);
|
|
this.sub.send(Antunnel.Msg.DATA, arr);
|
|
}
|
|
|
|
/**
|
|
* Get all the registered group
|
|
*
|
|
* @return {Uint8Array}
|
|
* @memberof BroadcastManager
|
|
*/
|
|
get_groups(): { [prop: number]: BroadcastGroup }
|
|
{
|
|
return this.groups;
|
|
}
|
|
|
|
/**
|
|
* Get group by name
|
|
*
|
|
* @return {Uint8Array}
|
|
* @memberof BroadcastManager
|
|
*/
|
|
get_group(name: string): BroadcastGroup
|
|
{
|
|
for(let k in this.groups)
|
|
{
|
|
if(this.groups[k].groupname === name)
|
|
{
|
|
return this.groups[k];
|
|
}
|
|
}
|
|
return undefined;
|
|
}
|
|
}
|
|
} |