@synerty/vortexjs
Version:
Custom observable data serialisation and routing based on Angular 2+
106 lines • 13.9 kB
JavaScript
import { Jsonable, SerialiseUtil } from "./exports";
import { assert } from "./UtilMisc";
import "./UtilArray";
import { PayloadDelegateInMainWeb } from "./payload/PayloadDelegateInMainWeb";
import { Payload } from "./Payload";
// ----------------------------------------------------------------------------
// Payload class
/**
*
* This class is serialised and transferred over the vortex to the server.
*/
export class PayloadEnvelope extends Jsonable {
static workerDelegate = new PayloadDelegateInMainWeb();
static vortexUuidKey = "__vortexUuid__";
static vortexNameKey = "__vortexName__";
filt;
data;
result = null;
date = null;
/**
* Payload Envelope
* This class is serialised and tranferred over the vortex to the server.
* @param filt The filter that the server handler is listening for
* @param data: The encoded payload to go into this envelope
* different location @depreciated
* @param date The date for this envelope, it should match the payload.
*/
constructor(filt = {}, data = null, date = null) {
super();
this.__rst = SerialiseUtil.T_RAPUI_PAYLOAD_ENVELOPE;
this.filt = filt;
this.data = data;
this.date = date == null ? new Date() : this.date;
}
static setWorkerDelegate(delegate) {
PayloadEnvelope.workerDelegate = delegate;
}
get encodedPayload() {
if (!this.data?.length) {
return null;
}
if (typeof this.data !== "string") {
throw new Error("PayloadEnvelope: encodedPayload is not an array");
}
// noinspection UnnecessaryLocalVariableJS
const str = this.data;
return str;
}
set encodedPayload(val) {
if (!val?.length || typeof val !== "string") {
throw new Error("PayloadEnvelope: val is not null or string");
}
this.data = val;
}
// -------------------------------------------
// Envelope method
isEmpty() {
// Ignore the connection start vortexUuid value
// It's sent as the first response when we connect.
for (let property in this.filt) {
if (property === PayloadEnvelope.vortexUuidKey)
continue;
// Anything else, return false
return false;
}
return ((this.encodedPayload == null || this.encodedPayload.length === 0) &&
this.result == null);
}
async decodePayload() {
if (this.encodedPayload == null) {
throw new Error("PayloadEnvelope: decodePayload, data is null");
}
return await Payload.fromEncodedPayload(this.encodedPayload);
}
// -------------------------------------------
// JSON Related method
_fromJson(jsonStr) {
return Promise.resolve(JSON.parse(jsonStr)) //
.then((jsonDict) => {
assert(jsonDict[Jsonable.JSON_CLASS_TYPE] === this.__rst);
return this.fromJsonDict(jsonDict);
});
}
_toJson() {
return Promise.resolve(this.toJsonDict()) //
.then((jsonDict) => JSON.stringify(jsonDict));
}
static fromVortexMsg(vortexStr) {
// Websockets do not require base64 encoding
if (vortexStr[0] === "{") {
// noinspection UnnecessaryLocalVariableJS
const jsonStr = vortexStr;
return new PayloadEnvelope()._fromJson(jsonStr);
}
// noinspection UnnecessaryLocalVariableJS
const result = PayloadEnvelope.workerDelegate
.decodeEnvelope(vortexStr)
.then((jsonStr) => new PayloadEnvelope()._fromJson(jsonStr));
return result;
}
toVortexMsg() {
return this._toJson() //
.then((jsonStr) => PayloadEnvelope.workerDelegate.encodeEnvelope(jsonStr));
}
}
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new Date() : this.date;\n    }\n\n    static setWorkerDelegate(delegate: PayloadDelegateABC) {\n        PayloadEnvelope.workerDelegate = delegate;\n    }\n\n    get encodedPayload(): string | null {\n        if (!this.data?.length) {\n            return null;\n        }\n\n        if (typeof this.data !== \"string\") {\n            throw new Error(\"PayloadEnvelope: encodedPayload is not an array\");\n        }\n\n        // noinspection UnnecessaryLocalVariableJS\n        const str: any = this.data;\n        return str;\n    }\n\n    set encodedPayload(val: string | null) {\n        if (!val?.length || typeof val !== \"string\") {\n            throw new Error(\"PayloadEnvelope: val is not null or string\");\n        }\n\n        this.data = val;\n    }\n\n    // -------------------------------------------\n    // Envelope method\n\n    isEmpty() {\n        // Ignore the connection start vortexUuid value\n        // It's sent as the first response when we connect.\n        for (let property in this.filt) {\n            if (property === PayloadEnvelope.vortexUuidKey) continue;\n            // Anything else, return false\n            return false;\n        }\n\n        return (\n            (this.encodedPayload == null || this.encodedPayload.length === 0) &&\n            this.result == null\n        );\n    }\n\n    async decodePayload(): Promise<Payload> {\n        if (this.encodedPayload == null) {\n            throw new Error(\"PayloadEnvelope: decodePayload, data is null\");\n        }\n        return await Payload.fromEncodedPayload(this.encodedPayload);\n    }\n\n    // -------------------------------------------\n    // JSON Related method\n\n    private _fromJson(jsonStr: string): Promise<PayloadEnvelope> {\n        return Promise.resolve(JSON.parse(jsonStr)) //\n            .then((jsonDict) => {\n                assert(jsonDict[Jsonable.JSON_CLASS_TYPE] === this.__rst);\n                return this.fromJsonDict(jsonDict);\n            });\n    }\n\n    private _toJson(): Promise<string> {\n        return Promise.resolve(this.toJsonDict()) //\n            .then((jsonDict) => JSON.stringify(jsonDict));\n    }\n\n    static fromVortexMsg(vortexStr: string): Promise<PayloadEnvelope> {\n        // Websockets do not require base64 encoding\n        if (vortexStr[0] === \"{\") {\n            // noinspection UnnecessaryLocalVariableJS\n            const jsonStr = vortexStr;\n            return new PayloadEnvelope()._fromJson(jsonStr);\n        }\n\n        // noinspection UnnecessaryLocalVariableJS\n        const result = PayloadEnvelope.workerDelegate\n            .decodeEnvelope(vortexStr)\n            .then((jsonStr) => new PayloadEnvelope()._fromJson(jsonStr));\n        return result;\n    }\n\n    toVortexMsg(): Promise<string> {\n        return this._toJson() //\n            .then((jsonStr) =>\n                PayloadEnvelope.workerDelegate.encodeEnvelope(jsonStr)\n            );\n    }\n}\n"]}