115 lines
3.7 KiB
TypeScript
115 lines
3.7 KiB
TypeScript
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import { defineProperties } from "../utils/properties.js";
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import { FetchRequest } from "../utils/fetch.js";
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import { showThrottleMessage } from "./community.js";
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import { logger } from "../utils/logger.js";
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import { Network } from "./network.js";
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import { JsonRpcProvider } from "./provider-jsonrpc.js";
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import type { AbstractProvider, PerformActionRequest } from "./abstract-provider.js";
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import type { CommunityResourcable } from "./community.js";
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import type { Networkish } from "./network.js";
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const defaultApiKey = "_gg7wSSi0KMBsdKnGVfHDueq6xMB9EkC"
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function getHost(name: string): string {
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switch(name) {
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case "homestead":
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return "eth-mainnet.alchemyapi.io";
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case "ropsten":
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return "eth-ropsten.alchemyapi.io";
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case "rinkeby":
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return "eth-rinkeby.alchemyapi.io";
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case "goerli":
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return "eth-goerli.alchemyapi.io";
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case "kovan":
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return "eth-kovan.alchemyapi.io";
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case "matic":
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return "polygon-mainnet.g.alchemy.com";
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case "maticmum":
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return "polygon-mumbai.g.alchemy.com";
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case "arbitrum":
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return "arb-mainnet.g.alchemy.com";
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case "arbitrum-rinkeby":
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return "arb-rinkeby.g.alchemy.com";
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case "optimism":
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return "opt-mainnet.g.alchemy.com";
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case "optimism-kovan":
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return "opt-kovan.g.alchemy.com";
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}
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return logger.throwArgumentError("unsupported network", "network", name);
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}
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export class AlchemyProvider extends JsonRpcProvider implements CommunityResourcable {
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readonly apiKey!: string;
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constructor(_network: Networkish = "homestead", apiKey?: null | string) {
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const network = Network.from(_network);
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if (apiKey == null) { apiKey = defaultApiKey; }
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const request = AlchemyProvider.getRequest(network, apiKey);
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super(request, network, { staticNetwork: network });
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defineProperties<AlchemyProvider>(this, { apiKey });
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}
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_getProvider(chainId: number): AbstractProvider {
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try {
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return new AlchemyProvider(chainId, this.apiKey);
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} catch (error) { }
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return super._getProvider(chainId);
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}
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async _perform(req: PerformActionRequest): Promise<any> {
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// https://docs.alchemy.com/reference/trace-transaction
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if (req.method === "getTransactionResult") {
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const trace = await this.send("trace_transaction", [ req.hash ]);
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if (trace == null) { return null; }
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let data: undefined | string;
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let error = false;
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try {
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data = trace[0].result.output;
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error = (trace[0].error === "Reverted");
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} catch (error) { }
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if (data) {
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if (error) {
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logger.throwError("an error occurred during transaction executions", "CALL_EXCEPTION", {
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data
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});
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}
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return data;
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}
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return logger.throwError("could not parse trace result", "BAD_DATA", { value: trace });
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}
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return await super._perform(req);
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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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static getRequest(network: Network, apiKey?: string): FetchRequest {
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if (apiKey == null) { apiKey = defaultApiKey; }
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const request = new FetchRequest(`https:/\/${ getHost(network.name) }/v2/${ apiKey }`);
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request.allowGzip = true;
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if (apiKey === defaultApiKey) {
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request.retryFunc = async (request, response, attempt) => {
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showThrottleMessage("alchemy");
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return true;
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}
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}
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return request;
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}
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}
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