@zkp2p/reclaim-witness-sdk
Version:
<div> <div> <img src="https://raw.githubusercontent.com/reclaimprotocol/.github/main/assets/banners/Attestor-Core.png" /> </div> </div>
94 lines • 8.61 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.AttestorClient = void 0;
const utils_1 = require("ethers/lib/utils");
const config_1 = require("../../config");
const api_1 = require("../../proto/api");
const utils_2 = require("../../utils");
const socket_base_1 = require("../../utils/socket-base");
const ws_1 = require("../../utils/ws");
class AttestorClient extends socket_base_1.AttestorSocket {
constructor({ url, initMessages = [], signatureType = config_1.DEFAULT_METADATA.signatureType, logger = utils_2.logger, authRequest, makeWebSocket = ws_1.makeWebSocket }) {
const initRequest = {
...config_1.DEFAULT_METADATA,
signatureType,
auth: authRequest
};
const msg = (0, utils_2.packRpcMessages)({ initRequest }, ...initMessages);
const initRequestBytes = api_1.RPCMessages.encode(msg).finish();
const initRequestB64 = utils_1.base64.encode(initRequestBytes);
url = new URL(url.toString());
url.searchParams.set('messages', initRequestB64);
super(makeWebSocket(url), initRequest, logger);
this.waitForInit = () => {
if (this.isClosed) {
throw new utils_2.AttestorError('ERROR_NETWORK_ERROR', 'Client connection already closed');
}
return this.waitForInitPromise;
};
const initReqId = msg.messages[0].id;
this.waitForInitPromise = this
.waitForResponse(initReqId)
.then(res => {
logger.info('client initialised');
this.isInitialised = true;
this.initResponse = res;
});
// swallow the error if anything bad happens, and we've no
// catch block to handle it
this.waitForInitPromise
.catch(() => { });
this.addEventListener('connection-terminated', ev => (logger.info({ err: ev.data }, 'connection terminated')));
}
async rpc(type, request) {
this.logger.debug({ type }, 'sending rpc request');
const now = Date.now();
try {
const { messages: [{ id }] } = await this.sendMessage({ [(0, utils_2.getRpcRequestType)(type)]: request });
const rslt = await this.waitForResponse(id);
return rslt;
}
finally {
const timeTakenMs = Date.now() - now;
this.logger.debug({ type, timeTakenMs }, 'received rpc response');
}
}
waitForResponse(id) {
if (this.isClosed) {
throw new utils_2.AttestorError('ERROR_NETWORK_ERROR', 'Client connection already closed');
}
// setup a promise to wait for the response
return new Promise((resolve, reject) => {
const handler = (event) => {
if (event.data.id !== id) {
return;
}
removeHandlers();
if ('error' in event.data) {
reject(event.data.error);
return;
}
// @ts-expect-error
resolve(event.data.data);
};
const terminateHandler = (event) => {
removeHandlers();
// if the connection was terminated, reject the promise
// but update the error code to reflect the network error
if (event.data.code === 'ERROR_NO_ERROR') {
reject(new utils_2.AttestorError('ERROR_NETWORK_ERROR', event.data.message, event.data.data));
return;
}
reject(event.data);
};
const removeHandlers = () => {
this.removeEventListener('rpc-response', handler);
this.removeEventListener('connection-terminated', terminateHandler);
};
this.addEventListener('rpc-response', handler);
this.addEventListener('connection-terminated', terminateHandler);
});
}
}
exports.AttestorClient = AttestorClient;
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