83 lines
2.8 KiB
TypeScript
83 lines
2.8 KiB
TypeScript
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import { defineProperties } from "@ethersproject/properties";
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import { FetchRequest } from "@ethersproject/web";
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import { showThrottleMessage } from "./community.js";
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import { logger } from "./logger.js";
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import { Network } from "./network.js";
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import { StaticJsonRpcProvider } from "./provider-jsonrpc.js";
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import type { ConnectionInfo, ThrottleRetryFunc } from "@ethersproject/web";
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import type { AbstractProvider } 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 StaticJsonRpcProvider 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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super(AlchemyProvider.getConnection(network, apiKey), 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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isCommunityResource(): boolean {
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return (this.apiKey === defaultApiKey);
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}
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static getConnection(network: Network, apiKey?: string): ConnectionInfo {
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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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const throttleRetry: ThrottleRetryFunc = async (request, response, attempt) => {
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if (apiKey === defaultApiKey) { showThrottleMessage("alchemy"); }
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return true;
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}
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return { request, throttleRetry };
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}
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}
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