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index.ts
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index.ts
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/*
This file is part of web3.js.
web3.js is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
web3.js is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with web3.js. If not, see <http://www.gnu.org/licenses/>.
*/
import fetch from 'cross-fetch';
import {
EthExecutionAPI,
JsonRpcResponseWithResult,
Web3APIMethod,
Web3APIPayload,
Web3APIReturnType,
Web3APISpec,
Web3BaseProvider,
Web3ProviderStatus,
} from 'web3-types';
import { InvalidClientError, MethodNotImplementedError, ResponseError } from 'web3-errors';
import { HttpProviderOptions } from './types.js';
export { HttpProviderOptions } from './types.js';
export default class HttpProvider<
API extends Web3APISpec = EthExecutionAPI,
> extends Web3BaseProvider<API> {
private readonly clientUrl: string;
private readonly httpProviderOptions: HttpProviderOptions | undefined;
public constructor(clientUrl: string, httpProviderOptions?: HttpProviderOptions) {
super();
if (!HttpProvider.validateClientUrl(clientUrl)) throw new InvalidClientError(clientUrl);
this.clientUrl = clientUrl;
this.httpProviderOptions = httpProviderOptions;
}
private static validateClientUrl(clientUrl: string): boolean {
return typeof clientUrl === 'string' ? /^http(s)?:\/\//i.test(clientUrl) : false;
}
/* eslint-disable class-methods-use-this */
public getStatus(): Web3ProviderStatus {
throw new MethodNotImplementedError();
}
/* eslint-disable class-methods-use-this */
public supportsSubscriptions() {
return false;
}
public async request<
Method extends Web3APIMethod<API>,
ResultType = Web3APIReturnType<API, Method>,
>(
payload: Web3APIPayload<API, Method>,
requestOptions?: RequestInit,
): Promise<JsonRpcResponseWithResult<ResultType>> {
const providerOptionsCombined = {
...this.httpProviderOptions?.providerOptions,
...requestOptions,
};
const response = await fetch(this.clientUrl, {
...providerOptionsCombined,
method: 'POST',
headers: {
...providerOptionsCombined.headers,
'Content-Type': 'application/json',
},
body: JSON.stringify(payload),
});
// eslint-disable-next-line @typescript-eslint/no-unsafe-argument
if (!response.ok) throw new ResponseError(await response.json());
return (await response.json()) as JsonRpcResponseWithResult<ResultType>;
}
/* eslint-disable class-methods-use-this */
public on() {
throw new MethodNotImplementedError();
}
/* eslint-disable class-methods-use-this */
public removeListener() {
throw new MethodNotImplementedError();
}
/* eslint-disable class-methods-use-this */
public once() {
throw new MethodNotImplementedError();
}
/* eslint-disable class-methods-use-this */
public removeAllListeners() {
throw new MethodNotImplementedError();
}
/* eslint-disable class-methods-use-this */
public connect() {
throw new MethodNotImplementedError();
}
/* eslint-disable class-methods-use-this */
public disconnect() {
throw new MethodNotImplementedError();
}
/* eslint-disable class-methods-use-this */
public reset() {
throw new MethodNotImplementedError();
}
/* eslint-disable class-methods-use-this */
public reconnect() {
throw new MethodNotImplementedError();
}
}
export { HttpProvider };