ethers.js/src.ts/providers/provider-infura.ts
2022-09-08 23:21:08 -04:00

90 lines
3.0 KiB
TypeScript

import {
defineProperties, FetchRequest, throwArgumentError
} from "../utils/index.js";
import { showThrottleMessage } from "./community.js";
import { Network } from "./network.js";
import { JsonRpcProvider } from "./provider-jsonrpc.js";
import type { AbstractProvider } from "./abstract-provider.js";
import type { CommunityResourcable } from "./community.js";
import type { Networkish } from "./network.js";
const defaultProjectId = "84842078b09946638c03157f83405213";
function getHost(name: string): string {
switch(name) {
case "homestead":
return "mainnet.infura.io";
case "ropsten":
return "ropsten.infura.io";
case "rinkeby":
return "rinkeby.infura.io";
case "kovan":
return "kovan.infura.io";
case "goerli":
return "goerli.infura.io";
case "matic":
return "polygon-mainnet.infura.io";
case "maticmum":
return "polygon-mumbai.infura.io";
case "optimism":
return "optimism-mainnet.infura.io";
case "optimism-kovan":
return "optimism-kovan.infura.io";
case "arbitrum":
return "arbitrum-mainnet.infura.io";
case "arbitrum-rinkeby":
return "arbitrum-rinkeby.infura.io";
}
return throwArgumentError("unsupported network", "network", name);
}
export class InfuraProvider extends JsonRpcProvider implements CommunityResourcable {
readonly projectId!: string;
readonly projectSecret!: null | string;
constructor(_network: Networkish = "homestead", projectId?: null | string, projectSecret?: null | string) {
const network = Network.from(_network);
if (projectId == null) { projectId = defaultProjectId; }
if (projectSecret == null) { projectSecret = null; }
const request = InfuraProvider.getRequest(network, projectId, projectSecret);
super(request, network, { staticNetwork: network });
defineProperties<InfuraProvider>(this, { projectId, projectSecret });
}
_getProvider(chainId: number): AbstractProvider {
try {
return new InfuraProvider(chainId, this.projectId, this.projectSecret);
} catch (error) { }
return super._getProvider(chainId);
}
static getRequest(network: Network, projectId?: null | string, projectSecret?: null | string): FetchRequest {
if (projectId == null) { projectId = defaultProjectId; }
if (projectSecret == null) { projectSecret = null; }
const request = new FetchRequest(`https:/\/${ getHost(network.name) }/v3/${ projectId }`);
request.allowGzip = true;
if (projectSecret) { request.setCredentials("", projectSecret); }
if (projectId === defaultProjectId) {
request.retryFunc = async (request, response, attempt) => {
showThrottleMessage("InfuraProvider");
return true;
};
}
return request;
}
isCommunityResource(): boolean {
return (this.projectId === defaultProjectId);
}
}