@synerty/vortexjs
Version:
Custom observable data serialisation and routing based on Angular 2+
228 lines • 29.3 kB
JavaScript
import { dateStr } from "./UtilMisc";
import { rapuiClientEcho } from "./PayloadFilterKeys";
import { payloadIO } from "./PayloadIO";
import { VortexStateEnum } from "./VortexStatusService";
import { PayloadEnvelope } from "./PayloadEnvelope";
import { Network } from "@capacitor/network";
/**
* Server response timeout in milliseconds
* @type {number}
*/
export let SERVER_RESPONSE_TIMEOUT_SECONDS = 20.0;
export var VortexClientStateE;
(function (VortexClientStateE) {
VortexClientStateE[VortexClientStateE["Idle"] = 0] = "Idle";
VortexClientStateE[VortexClientStateE["Connecting"] = 1] = "Connecting";
VortexClientStateE[VortexClientStateE["Online"] = 2] = "Online";
VortexClientStateE[VortexClientStateE["Closing"] = 3] = "Closing";
VortexClientStateE[VortexClientStateE["Closed"] = 4] = "Closed";
})(VortexClientStateE || (VortexClientStateE = {}));
export class VortexClientABC {
vortexStatusService;
headers;
HEART_BEAT_PERIOD_SECONDS = 10.0;
HEART_BEAT_TIMEOUT_SECONDS = 180.0;
RECONNECT_BACKOFF_SECONDS = 10.0;
beatTimer = null;
_uuid;
_name;
_url;
_vortexState = VortexClientStateE.Idle;
_isShutdown = false;
serverVortexUuid = null;
serverVortexName = null;
processingNetworkStateChange = false;
/**
* RapUI VortexService, This class is responsible for sending and receiving payloads to/from
* the server.
*/
constructor(vortexStatusService, url, vortexClientName, headers) {
this.vortexStatusService = vortexStatusService;
this.headers = headers;
this._uuid = VortexClientABC.makeUuid();
this._name = vortexClientName;
this._url = url;
// If the user switches network types, then reset the abort timer
Network.addListener("networkStatusChange", (status) => {
// We only want to do something if we DISconnect
if (status.connected) {
return;
}
// If we're already doing something, then do nothing
if (this.processingNetworkStateChange) {
return;
}
this.processingNetworkStateChange = true;
this.shutdown()
.catch((e) => console.log(`ERROR: VortexClientABC - Network State Change failed - ${e}`))
.then(() => (this.processingNetworkStateChange = false));
});
}
static makeUuid() {
function func(c) {
let r = (Math.random() * 16) | 0, v = c === "x" ? r : (r & 0x3) | 0x8;
return v.toString(16);
}
return "xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx".replace(/[xy]/g, func);
}
get url() {
return this._url;
}
get uuid() {
return this._uuid;
}
get name() {
return this._name;
}
get isConnecting() {
return this._vortexState === VortexClientStateE.Connecting;
}
get isClosed() {
return this._vortexState === VortexClientStateE.Closed;
}
get isClosing() {
return this._vortexState === VortexClientStateE.Closing;
}
get isOnline() {
return this._vortexState === VortexClientStateE.Online;
}
get isShutdown() {
return this._isShutdown;
}
async close() {
this._vortexState = VortexClientStateE.Closing;
this.vortexStatusService.logInfo(`VortexClientABC shutting down vortex`);
this.clearBeatTimer();
await this.shutdown();
}
setConnecting() {
this.vortexStatusService.setVortexState(VortexStateEnum.Reconnecting);
this._vortexState = VortexClientStateE.Connecting;
this.restartTimer();
}
setOnline() {
this.vortexStatusService.logConnectionInfo("Vortex Online");
this._vortexState = VortexClientStateE.Online;
this.vortexStatusService.setVortexState(VortexStateEnum.Online);
this.restartTimer();
}
setClosing() {
this._vortexState = VortexClientStateE.Closing;
this.vortexStatusService.setVortexState(VortexStateEnum.Reconnecting);
}
setClosed() {
this._vortexState = VortexClientStateE.Closed;
this.vortexStatusService.setVortexState(this.isShutdown
? VortexStateEnum.Disabled
: VortexStateEnum.Reconnecting);
if (!this.isShutdown)
this.restartTimer();
}
setShutdown() {
this._isShutdown = true;
}
async reconnect() {
this._vortexState = VortexClientStateE.Idle;
await this.send(new PayloadEnvelope());
this.restartTimer();
}
beat() {
// We may still get a beat before the connection closes
if (!this.isOnline)
return;
this.restartTimer();
}
restartTimer() {
this.clearBeatTimer();
// If we're online, then use the heartbeat timeout
// If we're not online, then use the reconnect backoff
const timerSeconds = this.isOnline
? this.HEART_BEAT_TIMEOUT_SECONDS
: this.RECONNECT_BACKOFF_SECONDS;
this.beatTimer = setTimeout(() => {
if (this.isShutdown)
return;
this.dead();
this.reconnect()
.then(() => {
this.restartTimer();
})
.catch((e) => {
this.vortexStatusService.logError(`restartTimer ${e}`);
});
}, timerSeconds * 1000);
}
clearBeatTimer() {
if (this.beatTimer != null) {
clearTimeout(this.beatTimer);
this.beatTimer = null;
}
}
dead() {
this.vortexStatusService.setVortexState(VortexStateEnum.Reconnecting);
this.vortexStatusService.logInfo(`VortexService server heartbeats have timed out : ${this._url}`);
}
async send(payloadEnvelope) {
if (this.isShutdown) {
let msg = dateStr() +
"VortexService is closed, Probably due to a login page reload";
console.log(msg);
throw new Error("An attempt was made to reconnect a closed vortex");
}
let payloadEnvelopes = [];
if (payloadEnvelope instanceof Array)
payloadEnvelopes = payloadEnvelope;
else
payloadEnvelopes = [payloadEnvelope];
for (let p of payloadEnvelopes) {
// Empty payloadEnvelopes are like heart beats, don't check them
if (!p.isEmpty() && p.filt["key"] == null) {
throw new Error("There is no 'key' in the payloadEnvelopes filt" +
", There must be one for routing");
}
}
let vortexMsgs = [];
let promises = [];
for (let payloadEnvelope of payloadEnvelopes) {
promises.push(payloadEnvelope
.toVortexMsg()
.then((vortexMsg) => vortexMsgs.push(vortexMsg)));
}
try {
await Promise.all(promises);
return this.sendVortexMsg(vortexMsgs);
}
catch (e) {
let msg = `ERROR VortexClientABC: ${e.toString()}`;
console.log(msg);
throw new Error(msg);
}
}
/**
* Receive
* This should only be called only from VortexConnection
* @param payloadEnvelope {Payload}
*/
receive(payloadEnvelope) {
this.beat();
if (payloadEnvelope.filt.hasOwnProperty(rapuiClientEcho)) {
delete payloadEnvelope[rapuiClientEcho];
this.send(payloadEnvelope);
}
if (payloadEnvelope.isEmpty()) {
if (payloadEnvelope.filt[PayloadEnvelope.vortexUuidKey] != null)
this.serverVortexUuid =
payloadEnvelope.filt[PayloadEnvelope.vortexUuidKey];
if (payloadEnvelope.filt[PayloadEnvelope.vortexNameKey] != null)
this.serverVortexName =
payloadEnvelope.filt[PayloadEnvelope.vortexNameKey];
return;
}
console.log(dateStr() +
"Received payloadEnvelope with filt : " +
JSON.stringify(payloadEnvelope.filt));
// TODO, Tell the payloadIO the vortexUuid
payloadIO.process(payloadEnvelope);
}
}
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{ Payload } from \"./Payload\";\nimport { dateStr } from \"./UtilMisc\";\nimport { rapuiClientEcho } from \"./PayloadFilterKeys\";\nimport { payloadIO } from \"./PayloadIO\";\nimport { VortexStateEnum, VortexStatusService } from \"./VortexStatusService\";\nimport { PayloadEnvelope } from \"./PayloadEnvelope\";\nimport { Network } from \"@capacitor/network\";\nimport { HttpHeaders } from \"@angular/common/http\";\n\n/**\n * Server response timeout in milliseconds\n * @type {number}\n */\nexport let SERVER_RESPONSE_TIMEOUT_SECONDS = 20.0;\n\nexport enum VortexClientStateE {\n    Idle,\n    Connecting,\n    Online,\n    Closing,\n    Closed,\n}\n\nexport abstract class VortexClientABC {\n    readonly HEART_BEAT_PERIOD_SECONDS = 10.0;\n    readonly HEART_BEAT_TIMEOUT_SECONDS = 180.0;\n    readonly RECONNECT_BACKOFF_SECONDS = 10.0;\n\n    private beatTimer: any | null = null;\n    private readonly _uuid: string;\n    private readonly _name: string;\n    protected readonly _url: string;\n    protected _vortexState: VortexClientStateE = VortexClientStateE.Idle;\n    protected _isShutdown: boolean = false;\n\n    private serverVortexUuid: string | null = null;\n    private serverVortexName: string | null = null;\n\n    private processingNetworkStateChange = false;\n\n    /**\n     * RapUI VortexService, This class is responsible for sending and receiving payloads to/from\n     * the server.\n     */\n    protected constructor(\n        protected vortexStatusService: VortexStatusService,\n        url: string,\n        vortexClientName: string,\n        public readonly headers: HttpHeaders,\n    ) {\n        this._uuid = VortexClientABC.makeUuid();\n        this._name = vortexClientName;\n        this._url = url;\n\n        // If the user switches network types, then reset the abort timer\n        Network.addListener(\"networkStatusChange\", (status) => {\n            // We only want to do something if we DISconnect\n            if (status.connected) {\n                return;\n            }\n\n            // If we're already doing something, then do nothing\n            if (this.processingNetworkStateChange) {\n                return;\n            }\n\n            this.processingNetworkStateChange = true;\n            this.shutdown()\n                .catch((e) =>\n                    console.log(\n                        `ERROR: VortexClientABC - Network State Change failed - ${e}`,\n                    ),\n                )\n                .then(() => (this.processingNetworkStateChange = false));\n        });\n    }\n\n    static makeUuid() {\n        function func(c) {\n            let r = (Math.random() * 16) | 0,\n                v = c === \"x\" ? r : (r & 0x3) | 0x8;\n            return v.toString(16);\n        }\n\n        return \"xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx\".replace(/[xy]/g, func);\n    }\n\n    get url(): string {\n        return this._url;\n    }\n\n    get uuid(): string {\n        return this._uuid;\n    }\n\n    get name(): string {\n        return this._name;\n    }\n\n    get isConnecting(): boolean {\n        return this._vortexState === VortexClientStateE.Connecting;\n    }\n\n    get isClosed(): boolean {\n        return this._vortexState === VortexClientStateE.Closed;\n    }\n\n    get isClosing(): boolean {\n        return this._vortexState === VortexClientStateE.Closing;\n    }\n\n    get isOnline(): boolean {\n        return this._vortexState === VortexClientStateE.Online;\n    }\n\n    get isShutdown(): boolean {\n        return this._isShutdown;\n    }\n\n    async close(): Promise<void> {\n        this._vortexState = VortexClientStateE.Closing;\n\n        this.vortexStatusService.logInfo(\n            `VortexClientABC shutting down vortex`,\n        );\n        this.clearBeatTimer();\n        await this.shutdown();\n    }\n\n    protected setConnecting() {\n        this.vortexStatusService.setVortexState(VortexStateEnum.Reconnecting);\n        this._vortexState = VortexClientStateE.Connecting;\n        this.restartTimer();\n    }\n\n    protected setOnline() {\n        this.vortexStatusService.logConnectionInfo(\"Vortex Online\");\n        this._vortexState = VortexClientStateE.Online;\n        this.vortexStatusService.setVortexState(VortexStateEnum.Online);\n        this.restartTimer();\n    }\n\n    protected setClosing() {\n        this._vortexState = VortexClientStateE.Closing;\n        this.vortexStatusService.setVortexState(VortexStateEnum.Reconnecting);\n    }\n\n    protected setClosed() {\n        this._vortexState = VortexClientStateE.Closed;\n        this.vortexStatusService.setVortexState(\n            this.isShutdown\n                ? VortexStateEnum.Disabled\n                : VortexStateEnum.Reconnecting,\n        );\n\n        if (!this.isShutdown) this.restartTimer();\n    }\n\n    protected setShutdown() {\n        this._isShutdown = true;\n    }\n\n    protected abstract shutdown(): Promise<void>;\n\n    async reconnect(): Promise<void> {\n        this._vortexState = VortexClientStateE.Idle;\n        await this.send(new PayloadEnvelope());\n        this.restartTimer();\n    }\n\n    protected beat(): void {\n        // We may still get a beat before the connection closes\n        if (!this.isOnline) return;\n\n        this.restartTimer();\n    }\n\n    protected restartTimer() {\n        this.clearBeatTimer();\n\n        // If we're online, then use the heartbeat timeout\n        // If we're not online, then use the reconnect backoff\n        const timerSeconds = this.isOnline\n            ? this.HEART_BEAT_TIMEOUT_SECONDS\n            : this.RECONNECT_BACKOFF_SECONDS;\n\n        this.beatTimer = setTimeout(() => {\n            if (this.isShutdown) return;\n\n            this.dead();\n            this.reconnect()\n                .then(() => {\n                    this.restartTimer();\n                })\n                .catch((e) => {\n                    this.vortexStatusService.logError(`restartTimer ${e}`);\n                });\n        }, timerSeconds * 1000);\n    }\n\n    protected clearBeatTimer() {\n        if (this.beatTimer != null) {\n            clearTimeout(this.beatTimer);\n            this.beatTimer = null;\n        }\n    }\n\n    private dead(): void {\n        this.vortexStatusService.setVortexState(VortexStateEnum.Reconnecting);\n        this.vortexStatusService.logInfo(\n            `VortexService server heartbeats have timed out : ${this._url}`,\n        );\n    }\n\n    protected abstract sendVortexMsg(vortexMsgs: string[]): void;\n\n    async send(\n        payloadEnvelope: PayloadEnvelope | PayloadEnvelope[],\n    ): Promise<void> {\n        if (this.isShutdown) {\n            let msg =\n                dateStr() +\n                \"VortexService is closed, Probably due to a login page reload\";\n            console.log(msg);\n            throw new Error(\"An attempt was made to reconnect a closed vortex\");\n        }\n\n        let payloadEnvelopes: PayloadEnvelope[] = [];\n        if (payloadEnvelope instanceof Array)\n            payloadEnvelopes = payloadEnvelope;\n        else payloadEnvelopes = [payloadEnvelope];\n\n        for (let p of payloadEnvelopes) {\n            // Empty payloadEnvelopes are like heart beats, don't check them\n            if (!p.isEmpty() && p.filt[\"key\"] == null) {\n                throw new Error(\n                    \"There is no 'key' in the payloadEnvelopes filt\" +\n                        \", There must be one for routing\",\n                );\n            }\n        }\n\n        let vortexMsgs: string[] = [];\n        let promises = [];\n\n        for (let payloadEnvelope of payloadEnvelopes) {\n            promises.push(\n                payloadEnvelope\n                    .toVortexMsg()\n                    .then((vortexMsg) => vortexMsgs.push(vortexMsg)),\n            );\n        }\n\n        try {\n            await Promise.all(promises);\n            return this.sendVortexMsg(vortexMsgs);\n        } catch (e) {\n            let msg = `ERROR VortexClientABC: ${e.toString()}`;\n            console.log(msg);\n            throw new Error(msg);\n        }\n    }\n\n    /**\n     * Receive\n     * This should only be called only from VortexConnection\n     * @param payloadEnvelope {Payload}\n     */\n    protected receive(payloadEnvelope: PayloadEnvelope): void {\n        this.beat();\n        if (payloadEnvelope.filt.hasOwnProperty(rapuiClientEcho)) {\n            delete payloadEnvelope[rapuiClientEcho];\n            this.send(payloadEnvelope);\n        }\n\n        if (payloadEnvelope.isEmpty()) {\n            if (payloadEnvelope.filt[PayloadEnvelope.vortexUuidKey] != null)\n                this.serverVortexUuid =\n                    payloadEnvelope.filt[PayloadEnvelope.vortexUuidKey];\n\n            if (payloadEnvelope.filt[PayloadEnvelope.vortexNameKey] != null)\n                this.serverVortexName =\n                    payloadEnvelope.filt[PayloadEnvelope.vortexNameKey];\n\n            return;\n        }\n\n        console.log(\n            dateStr() +\n                \"Received payloadEnvelope with filt : \" +\n                JSON.stringify(payloadEnvelope.filt),\n        );\n\n        // TODO, Tell the payloadIO the vortexUuid\n        payloadIO.process(payloadEnvelope);\n    }\n}\n"]}