@web5/agent
Version:
123 lines • 5.45 kB
JavaScript
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
import { CryptoUtils } from '@web5/crypto';
import { createJsonRpcRequest } from './prototyping/clients/json-rpc.js';
import { HttpDwnRpcClient } from './prototyping/clients/http-dwn-rpc-client.js';
import { WebSocketDwnRpcClient } from './prototyping/clients/web-socket-clients.js';
export var DidRpcMethod;
(function (DidRpcMethod) {
DidRpcMethod["Create"] = "did.create";
DidRpcMethod["Resolve"] = "did.resolve";
})(DidRpcMethod || (DidRpcMethod = {}));
/**
* Client used to communicate with Dwn Servers
*/
export class Web5RpcClient {
constructor(clients = []) {
this.transportClients = new Map();
// include http and socket clients as default.
// can be overwritten for 'http:', 'https:', 'ws: or ':wss' if instantiated with other clients.
clients = [new HttpWeb5RpcClient(), new WebSocketWeb5RpcClient(), ...clients];
for (let client of clients) {
for (let transportScheme of client.transportProtocols) {
this.transportClients.set(transportScheme, client);
}
}
}
get transportProtocols() {
return Array.from(this.transportClients.keys());
}
sendDidRequest(request) {
return __awaiter(this, void 0, void 0, function* () {
// URL() will throw if provided `url` is invalid.
const url = new URL(request.url);
const transportClient = this.transportClients.get(url.protocol);
if (!transportClient) {
const error = new Error(`no ${url.protocol} transport client available`);
error.name = 'NO_TRANSPORT_CLIENT';
throw error;
}
return transportClient.sendDidRequest(request);
});
}
sendDwnRequest(request) {
// will throw if url is invalid
const url = new URL(request.dwnUrl);
const transportClient = this.transportClients.get(url.protocol);
if (!transportClient) {
const error = new Error(`no ${url.protocol} transport client available`);
error.name = 'NO_TRANSPORT_CLIENT';
throw error;
}
return transportClient.sendDwnRequest(request);
}
getServerInfo(dwnUrl) {
return __awaiter(this, void 0, void 0, function* () {
// will throw if url is invalid
const url = new URL(dwnUrl);
const transportClient = this.transportClients.get(url.protocol);
if (!transportClient) {
const error = new Error(`no ${url.protocol} transport client available`);
error.name = 'NO_TRANSPORT_CLIENT';
throw error;
}
return transportClient.getServerInfo(dwnUrl);
});
}
}
export class HttpWeb5RpcClient extends HttpDwnRpcClient {
sendDidRequest(request) {
return __awaiter(this, void 0, void 0, function* () {
const requestId = CryptoUtils.randomUuid();
const jsonRpcRequest = createJsonRpcRequest(requestId, request.method, {
data: request.data
});
const httpRequest = new Request(request.url, {
method: 'POST',
headers: {
'Content-Type': 'application/json',
},
body: JSON.stringify(jsonRpcRequest),
});
let jsonRpcResponse;
try {
const response = yield fetch(httpRequest);
if (response.ok) {
jsonRpcResponse = yield response.json();
// If the response is an error, throw an error.
if (jsonRpcResponse.error) {
const { code, message } = jsonRpcResponse.error;
throw new Error(`JSON RPC (${code}) - ${message}`);
}
}
else {
throw new Error(`HTTP (${response.status}) - ${response.statusText}`);
}
}
catch (error) {
throw new Error(`Error encountered while processing response from ${request.url}: ${error.message}`);
}
return jsonRpcResponse.result;
});
}
}
export class WebSocketWeb5RpcClient extends WebSocketDwnRpcClient {
sendDidRequest(_request) {
return __awaiter(this, void 0, void 0, function* () {
throw new Error(`not implemented for transports [${this.transportProtocols.join(', ')}]`);
});
}
getServerInfo(_dwnUrl) {
return __awaiter(this, void 0, void 0, function* () {
throw new Error(`not implemented for transports [${this.transportProtocols.join(', ')}]`);
});
}
}
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