104 lines
3.5 KiB
TypeScript
104 lines
3.5 KiB
TypeScript
"use strict";
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import { Network, Networkish } from "@ethersproject/networks";
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import { defineReadOnly } from "@ethersproject/properties";
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import { ConnectionInfo } from "@ethersproject/web";
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import { CommunityResourcable, showThrottleMessage } from "./formatter";
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import { WebSocketProvider } from "./websocket-provider";
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import { Logger } from "@ethersproject/logger";
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import { version } from "./_version";
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const logger = new Logger(version);
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import { UrlJsonRpcProvider } from "./url-json-rpc-provider";
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// This key was provided to ethers.js by Alchemy to be used by the
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// default provider, but it is recommended that for your own
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// production environments, that you acquire your own API key at:
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// https://dashboard.alchemyapi.io
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const defaultApiKey = "_gg7wSSi0KMBsdKnGVfHDueq6xMB9EkC"
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export class AlchemyWebSocketProvider extends WebSocketProvider implements CommunityResourcable {
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readonly apiKey: string;
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constructor(network?: Networkish, apiKey?: any) {
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const provider = new AlchemyProvider(network, apiKey);
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const url = provider.connection.url.replace(/^http/i, "ws")
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.replace(".alchemyapi.", ".ws.alchemyapi.");
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super(url, provider.network);
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defineReadOnly(this, "apiKey", provider.apiKey);
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}
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isCommunityResource(): boolean {
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return (this.apiKey === defaultApiKey);
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}
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}
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export class AlchemyProvider extends UrlJsonRpcProvider {
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static getWebSocketProvider(network?: Networkish, apiKey?: any): AlchemyWebSocketProvider {
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return new AlchemyWebSocketProvider(network, apiKey);
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}
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static getApiKey(apiKey: any): any {
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if (apiKey == null) { return defaultApiKey; }
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if (apiKey && typeof(apiKey) !== "string") {
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logger.throwArgumentError("invalid apiKey", "apiKey", apiKey);
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}
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return apiKey;
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}
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static getUrl(network: Network, apiKey: string): ConnectionInfo {
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let host = null;
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switch (network.name) {
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case "homestead":
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host = "eth-mainnet.alchemyapi.io/v2/";
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break;
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case "ropsten":
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host = "eth-ropsten.alchemyapi.io/v2/";
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break;
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case "rinkeby":
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host = "eth-rinkeby.alchemyapi.io/v2/";
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break;
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case "goerli":
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host = "eth-goerli.alchemyapi.io/v2/";
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break;
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case "kovan":
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host = "eth-kovan.alchemyapi.io/v2/";
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break;
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default:
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logger.throwArgumentError("unsupported network", "network", arguments[0]);
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}
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return {
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allowGzip: true,
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url: ("https:/" + "/" + host + apiKey),
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throttleCallback: (attempt: number, url: string) => {
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if (apiKey === defaultApiKey) {
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showThrottleMessage();
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}
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return Promise.resolve(true);
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}
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};
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}
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async perform(method: string, params: any): Promise<any> {
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if ((method === "estimateGas" && params.transaction.type === 2) || (method === "sendTransaction" && params.signedTransaction.substring(0, 4) === "0x02")) {
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logger.throwError("AlchemyProvider does not currently support EIP-1559", Logger.errors.UNSUPPORTED_OPERATION, {
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operation: method,
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transaction: params.transaction
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});
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}
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return super.perform(method, params);
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}
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isCommunityResource(): boolean {
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return (this.apiKey === defaultApiKey);
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}
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}
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