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• [DIR] ..
• [FILE] api.d.ts
• [FILE] api.js
• [FILE] api.js.map
• [DIR] http
• [FILE] index.d.ts
• [FILE] index.js
• [FILE] index.js.map
• [FILE] proxy.d.ts
• [FILE] proxy.js
• [FILE] proxy.js.map

Просмотр файла: proxy.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.ProxyAgent = exports.ProxyStubAgent = exports.ProxyMessageKind = void 0;
const principal_1 = require("@dfinity/principal");
var ProxyMessageKind;
(function (ProxyMessageKind) {
    ProxyMessageKind["Error"] = "err";
    ProxyMessageKind["GetPrincipal"] = "gp";
    ProxyMessageKind["GetPrincipalResponse"] = "gpr";
    ProxyMessageKind["Query"] = "q";
    ProxyMessageKind["QueryResponse"] = "qr";
    ProxyMessageKind["Call"] = "c";
    ProxyMessageKind["CallResponse"] = "cr";
    ProxyMessageKind["ReadState"] = "rs";
    ProxyMessageKind["ReadStateResponse"] = "rsr";
    ProxyMessageKind["Status"] = "s";
    ProxyMessageKind["StatusResponse"] = "sr";
})(ProxyMessageKind = exports.ProxyMessageKind || (exports.ProxyMessageKind = {}));
// A Stub Agent that forwards calls to another Agent implementation.
class ProxyStubAgent {
    constructor(_frontend, _agent) {
        this._frontend = _frontend;
        this._agent = _agent;
    }
    onmessage(msg) {
        switch (msg.type) {
            case ProxyMessageKind.GetPrincipal:
                this._agent.getPrincipal().then(response => {
                    this._frontend({
                        id: msg.id,
                        type: ProxyMessageKind.GetPrincipalResponse,
                        response: response.toText(),
                    });
                });
                break;
            case ProxyMessageKind.Query:
                this._agent.query(...msg.args).then(response => {
                    this._frontend({
                        id: msg.id,
                        type: ProxyMessageKind.QueryResponse,
                        response,
                    });
                });
                break;
            case ProxyMessageKind.Call:
                this._agent.call(...msg.args).then(response => {
                    this._frontend({
                        id: msg.id,
                        type: ProxyMessageKind.CallResponse,
                        response,
                    });
                });
                break;
            case ProxyMessageKind.ReadState:
                this._agent.readState(...msg.args).then(response => {
                    this._frontend({
                        id: msg.id,
                        type: ProxyMessageKind.ReadStateResponse,
                        response,
                    });
                });
                break;
            case ProxyMessageKind.Status:
                this._agent.status().then(response => {
                    this._frontend({
                        id: msg.id,
                        type: ProxyMessageKind.StatusResponse,
                        response,
                    });
                });
                break;
            default:
                throw new Error(`Invalid message received: ${JSON.stringify(msg)}`);
        }
    }
}
exports.ProxyStubAgent = ProxyStubAgent;
// An Agent that forwards calls to a backend. The calls are serialized
class ProxyAgent {
    constructor(_backend) {
        this._backend = _backend;
        this._nextId = 0;
        this._pendingCalls = new Map();
        this.rootKey = null;
    }
    onmessage(msg) {
        const id = msg.id;
        const maybePromise = this._pendingCalls.get(id);
        if (!maybePromise) {
            throw new Error('A proxy get the same message twice...');
        }
        this._pendingCalls.delete(id);
        const [resolve, reject] = maybePromise;
        switch (msg.type) {
            case ProxyMessageKind.Error:
                return reject(msg.error);
            case ProxyMessageKind.GetPrincipalResponse:
            case ProxyMessageKind.CallResponse:
            case ProxyMessageKind.QueryResponse:
            case ProxyMessageKind.ReadStateResponse:
            case ProxyMessageKind.StatusResponse:
                return resolve(msg.response);
            default:
                throw new Error(`Invalid message being sent to ProxyAgent: ${JSON.stringify(msg)}`);
        }
    }
    async getPrincipal() {
        return this._sendAndWait({
            id: this._nextId++,
            type: ProxyMessageKind.GetPrincipal,
        }).then(principal => {
            if (typeof principal !== 'string') {
                throw new Error('Invalid principal received.');
            }
            return principal_1.Principal.fromText(principal);
        });
    }
    readState(canisterId, fields) {
        return this._sendAndWait({
            id: this._nextId++,
            type: ProxyMessageKind.ReadState,
            args: [canisterId.toString(), fields],
        });
    }
    call(canisterId, fields) {
        return this._sendAndWait({
            id: this._nextId++,
            type: ProxyMessageKind.Call,
            args: [canisterId.toString(), fields],
        });
    }
    status() {
        return this._sendAndWait({
            id: this._nextId++,
            type: ProxyMessageKind.Status,
        });
    }
    query(canisterId, fields) {
        return this._sendAndWait({
            id: this._nextId++,
            type: ProxyMessageKind.Query,
            args: [canisterId.toString(), fields],
        });
    }
    async _sendAndWait(msg) {
        return new Promise((resolve, reject) => {
            this._pendingCalls.set(msg.id, [resolve, reject]);
            this._backend(msg);
        });
    }
    async fetchRootKey() {
        // Hex-encoded version of the replica root key
        const rootKey = (await this.status()).root_key;
        this.rootKey = rootKey;
        return rootKey;
    }
}
exports.ProxyAgent = ProxyAgent;
//# sourceMappingURL=proxy.js.map

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